Solar Power isn't Feasible!

Solar Power isn't Feasible!
This cartoon was on the cover of the book "SolarGas" by David Hoye. It echoes the Sharp Solar slogan "Last time I checked nobody owned the sun!"

Tuesday, June 22, 2010

Building your "sacred cow" biogas digestor (By Hanna Fathy, Solar CITIES Zabaleen community director)






مقدمه عن المشروع البيوجاذ

من حنا فتحي في حي الزبلين في القاهره

تشكل القمامه في كثير من الاماكن مشكله كبيره و خصوصا مشكله التخلص من المواد العضويه واعاده تدويرها ونتج عن ذلك تراكم المواد العضويه بالشوارع او التخلص منها بالقائها فى اماكن خارج المدينه واحيانا في الماء وهذاما يؤدى الى تلوث التربه والماء و الهواء بالروائح الكريهة والميكروبات نتيجه تعفنها و ايضا تؤدى الى زياده مشكله الاحتباس الحرارى عند تحلل المواد العضويه بالماء اوبالشوارع لاهوائيا فأنها تنتج غاز الميثان وهو ضار بمعدل 28 مره اكثر من ثانى اكسيد الكربون لان نسبه امتصاصه للاشعه تحت الحمراء 15% وايضا توالد وتكاثر الحشرات والفئران وانتشار الامراض والاؤبئه وايضا نقلها للمقالب طريقه مكلفه للنقل و ينتج عنها الغازات المدفئه وان هذه المخلفات هى مصدر اساسى للسماد العضوى و ايضا نظرا لاهميه الكائنات الحيه الدقيقه فى التربه

فكره المشروع

هى استخدام البكتريا اللاهوائيه والتى يتم الحصول عليها بوضع كميه من روث الحيوانات قبل جفافه لضمان عدم موت البكتري بداخل النظام ا وذلك لانها تقوم بتحليل وهضم المواد العضويه كما تفعل داخل معده هذا الحيوان للحصول على غاز المثان والسماد العضوى والتخلص من المواد العضويه بطريقه بيئيه

ولكن فى هذه الطريقه نقوم بفرم مخلفات المطبخ العضويه لتسهيل عمليه تحليها ووضعها للبكتريا من خلال النظام

لان المواد العضويه تحتوى على الطاقه فى صوره كيميائيه وتقوم البكتريا بتحليلها وتكثيرها وانتاج الطاقه الموجودة بها وهذا النظام يختلف عن الطريقه القديمه التى تعتمد فقط على الروث بمعنى ان مخلفات المطبخ تحتوى على الغذاءو الطاقه التى تحتاجها البكتريا افضل من روث الحيوانات لان الروث لايحتوى على اى طاقه لانه مستخدم بالفعل عن طريق الحيوان

من حنا فتحي

مكونات النظام

1برميل اسطوانى 1000 لتر,برميل750 لتر ,2مواسير 3بوصه,1 كوع 3بوصه ومحبي 3بوصه ,نبل خزان 3بوصه,لاصق او غراء PVC,جلبه 3بوصه انثي جلبه 3بوصه ذكر ,نبل خزان 2بوصه,1متر مواسير 2بوصه,1 كوع 2بوصه ,نبل خزان 2/1 بوصه ,كوع حديد 2/1 بوصه محبس 2/1 بوصه ,نبل خرطوم 2/1 بوصه

وصف المشروع

هو عباره عن 2 برميل كما بالشكل

البرميل السفلى حجمه 1000 لتر ويتم عمل 3 فتحات باحجام مختلفه الاولى 3بوصه في الاسفل لتركيب ماسوره اعلى من البرميل بمسافه صغيره وهى لادخال الاكل منها

وايضا فتحه 3بوصه بالاسفل مع محبس ويستخدم فى حال تفريغ النظام او نقله

وفتحه اخرى فى اعلى البرميل بقطر 2بوصه لخروج السائل الزائد عن حجم البرميل

البرمل الثانى خزان الغاز

عباره عن برميل 750 لتر ويتم فتحه من الاعلى وعمل فتحه بقطر 2/1 بوصه فى اسفله ووضع محبس بها وهى لخروج الغاز منها ثم توصل بخرطوم او ماسوره لتوصيل الغاز الى مكان استخدامه

طريقه التشغيل

بعد تجهير البراميل يتم اختبارها والتاكد من عدم التسريب

يتم وضع الروث بالكميه المناسبه للنظام وتكمله البرميل بالماء

وضع البرميل 750 بالمقلوب داخل البرميل الكبير

الانتظار حتى تنشط البكتريا و تنتج غاز ويرتفع البرميل لاعلى بعد حوالي اسبوعين

يتم وضع 1-2 كيلو من زباله المطبخ بعد طحنها ومزجها بكميه معينه من الماء للنظام


ويلاحظ أنه حتى يمكن استخدام مواقد البوتاجاز لتعمل بالبيوجاز لا بد من
إجراء تعديلين، الأول هو توسيع فتحة خروج الغاز (الفونية) للحصول على نفس
كمية الحرارة الناتجة عن الغاز الطبيعي لأن الطاقة الحرارية للبيوجاز أقل
من الغاز الطبيعي، والثاني هو ضرورة تصغير فتحة دخول الهواء لأن كمية
الهواء اللازمة لحرق الغاز حرقا كاملا أقل بالنسبة للبيوجاز عن الغاز
الطبيعي.

ولا تتوقف الفوائد عند هذا الحد، بل له تطبيق آخر لم يتم استخدامه في مصر
وهو إنتاج الطاقة الكهربائية باستخدام مولدات تعمل بالبيوجاز حيث يمكن
للمتر المكعب منه توليد طاقة كهربائية تتراوح من 1.3 إلى 1.5 كيلو وات في
الساعة.

تتخطى مزايا استخدام البيوجاز التخلص من المخلفات التي تعد في حد ذاتها
ميزة لا يستهان بها، بل يتمتع البيوجاز بمزايا متعددة تؤهله لأن يكون
بديلا لمصادر الطاقة العادية
، فهو يستخدم دون معالجات أو تنقية حيث يتخلف عن
احتراقه في المواقد ثاني أكسيد الكربون وبخار الماء، وبالتالي فإنه لا
يسبب تلوثا للهواء الجوي مقارنة بمصادر الطاقة الأخرى حيث ينتج عنها أول
أكسيد الكربون المعروف بتأثيره السام.

والبيوجاز غاز غير سام وعديم اللون وله رائحة الغاز الطبيعي وسرعة اللهب
عند اشتعاله -35 سم في الثانية وهو أبطأ من الغاز الطبيعي- مما يجعله
بديلا أكثر أمنا منه، وتتراوح الطاقة الحرارية الناتجة عنه ما بين 5000
إلى 6000 كيلو كالوري للمتر المكعب.. وقد أثبتت التطبيقات العملية أن

المتر المكعب منه يمكن أن يغطي الاحتياجات الآتية

تشغيل موقد متوسط لمدة من 2.5 إلى 3 ساعات.

تشغيل كلوب برتينة قوة 100 شمعة لمدة من 8 إلى 10 ساعات.

تشغيل آلة احتراق داخلي قدرتها 1 حصان لمدة ساعتين.

تشغيل جرار زراعي زنة 3 طن مسافة 2.8 كجم.

تشغيل فرن متوسط الحجم لمدة ساعتين.

تشغيل دفاية مزارع دواجن طولها 60 سم لمدة ساعتين



Introduction to the Zabaleen Biogas Project

Arabic by Hanna Fathy, Solar CITIES director in the Zabaleen Garbage Recycling Community of Cairo Egypt (English translated and interpreted by T.H. Culhane, Solar CITIES co-founder)

Garbage and litter creates serious problems in many places; an especially big problem is the disposal of organic materials which unfortunately are usually not recycled. This results in the accumulation of organic waste on the streets and/or the dumping of these wastes in places outside the city, often in canals, streams, rivers, lakes and oceans. They are also frequently burned. All of this leads to serious contamination of soil, water and air. The lack of efficient recycling of organic wastes creates more than just unpleasant odors and the potential for disease; microbes in the rotting food actually increase the problem of global warming when the decomposition of organic material proceeds anaerobically (as happens in landfills or garbage bins). These microbes produce methane, a gas that, if not burned, is 28 times more powerful than carbon dioxide. It's rate of absorption of infrared wavelengths is 15% greater than that of CO2. In addition to the global environmental impact and the local environmental impact (particularly the breeding of insects and rats and the transmission of diseases), transfer to landfills is an expensive and inefficient way to deal with these wastes. Not only does trucking them to dumpsites and burying them require a considerable amount of fossil fuels, but the resources themselves are wasted -- resources that could be used to actually reduce the amount of fossil fuels we use. Under controlled conditions of anaerobic decomposition, the methane produced can actually be better used for heating or generating electricity and the wastes themselves are a major source of organic fertilizer and provide important micro-organisms to enrich the soil.

Premise of the Project

Our idea is to use anaerobic bacteria to solve urban waste problems at the household level. The bacteria, which are obtained by placing a small quantity of animal dung before it dries into an airtight container (to ensure a viable bacterial population) are used to digest household kitchen wastes on-site so that families no longer have any organic garbage to throw out. This ensures that the streets remain clean and there is nothing that must go to the landfill (everything else, once clean of organic material, can be easily recycled). Anaerobic bacteria that normally live in an animal's digestive system, called "methanogens", once cultured to a suitable concentration outside the animal, will break down and digest organic materials (like spoiled food) in an "artificial stomach" (a plastic container) just as they do within the stomach of the animal and they will produce easily captured and controlled methane (natural gas) and fertilizer and assist in the disposal of organic material in a safe environmental manner.

Food waste feedstock rather than animal manure

We use organic kitchen waste to feed the anaerobic bacteria not only because it solves the problem of urban organic waste (providing an even richer fertilizer than normal aerobic compost) but leads to two different end products -- a rich liquid fertilizer that is easy to bottle and use (or even sell!) and up to two hours of biogas for household cooking almost every day.

Because the organic materials in kitchen garbage contain an enormous amount of energy in the form of rich chemical bonds, the production of biogas from this feedstock, as Dr. Anand Karve has proven at the Appropriate Rural Technology Institute in Pune India, is up to 400 times more efficient than production from animal waste, wherein the food has already passed through the digestive tract of the animal and is thus a "spent fuel". The ARTI system, which we have replicated in Cairo is thus different from the old and traditional biogas method, which depends only on animal dung as a feedstock. We use animal dung only as a "starter kit" on the first day of construction to create our bacterial culture. Once we have assembled the system (which can take as little as two or three hours) we don't need animal dung again (in a community of biogas producers a new system can be started by using the liquid effluent from somebody else's system, just as people share yoghurt and sourdough bacterial cultures).

System Components

1 cylindrical barrel of 1000 liters, 1 cylindrical barrel of 750 liters, 2 meters of 3 inch diameter tube, 1 T 3-inch diameter, 1 tank adapter 3 inches, one 3 inch valve, teflon tape, PVC glue , two 3 inch female connectors, two 3 inch male connectors; one 1 inch tank adapter, 1 meter of 1 inch tube, 1 Elbow 1 inch, one 1/2 inch tank adaptor, one 1/2 inch elbow, one 1/2 valve, one 1/2 inch brass hose adapter, 25 meters of clear flexible 1/2 inch plastic tubing.

Project Description: "The Sacred Cow"

You are basically trying to create an artificial cow to be the home of your methanogenic bacteria. You need to give your sacred cow a mouth, a throat, an esophagus, and a stomach, as well as a ureter, intestines, a farting bowel and an anus. From the ureter you will get fertilizer; from the anus you will get biogas. Your blender or insinkerator garbage disposal unit will act as the cows teeth for grinding up food.

The cow's stomach:

Cut the top off of the 1000 liter barrel so that 750 liter barrel can fit inside it upside down with about 1/2 inch to spare. This tank becomes what we call our artificial "cow's stomach".

The cow's mouth, throat and esophagus:

At the bottom of the 1000 liter barrel drill a hole (you can burn one through with a hot section of 3" steel pipe if you don't have a drill) to fit the 3" tank adapter. On the inside connect the female connector and connect it with a piece of 3" pipe leading to the center of the tank. On the outside connect the T and connect to this the drainage valve and a length of vertical pipe that extends at least 25 centimeters above the top of the tank. The pipe inside the tank that extends to the center is the esophagus, the pipe outside the tank is the cows throat. For a better mouth you put a funnel on top of this "feeding tube".

The cow's ureter.

At the very top of the 1000 liter barrel, on the opposite side from where you drilled the hole for the feeding pipe drill (or melt with a piece of hot pipe) a hole for the 1" tank adapter. On the outside of this connect a short length (~ 10 cm) of 1" pipe, then an elbow and then about 20 cm of 1" pipe -- this is for the exit of excess fluid. You place a 20 liter bucket under this "ureter" to capture the fertilizer. You will always get as much fertilizer in liters as the feedstock you put in to the mouth (i.e. if you pour 10 liters of ground up food and water in the mouth you will get 10 liters of "cow pee" out at the same time).

The cow's intestines.

You want to have as much surface area for bacteria to grow on and form their biofilms as possible. Fill the bottom of the 1000 liter barrel with stones and gravel of various sizes up to about 5 cm. You can also throw in plastic chips. One way we improve performance is to place a stone in the bottom of a net or mesh bag, fill the bag with plastic balls or chips and sew a piece of styrofoam at the top so the net bag floats vertically. The bag can be almost as long as your tank is deep and you can put several in. these become what we call "bacterial fuel rods" -- places where the bacteria can breed and form active biofilms. You are basically trying to recreate the villi in a cow's intestines.

The cow's bowels:

Take your 750-liter barrel, which will become your "gas collector" and cut openings in the top in the curved part, leaving enough of a skeleton of plastic to support the center ring of the original opening. Then press this ring in so that it is concave instead of convex. You want to leave this ring of plastic for two reasons -- one so that as the tank moves up and down as it fills with gas and you use the gas it will agitate and mix the water and food slurry to make sure the bacteria at the top get food too and two to provide weight and stability so that the tank rises in a more vertical fashion and has the mass to force the gas out as it descends.

The cow's anus:

Drill or melt a 1/2 inch hole into the bottom of the 750 liter tank (this will now be the top of the gas collector). It doesn't matter where you place this hole, but we generally put it about 5 cm from the edge of what will be the top so it can be closer to the kitchen and so we can place weights (bricks, potted plants, etc.) in the center of the collector to help pressurize the gas. Insert the 1/2" tank fitting and put on the elbow, the valve and the brass 1/2" pipe to barbed hose adaptor. Attach the clear plastic hose to the barb with a hose clamp and run the hose to the kitchen. Attach the other end of the hose to a stove burner.

After the barrels are equipped test them with water to make sure they don't leak. Tighten tank fittings as necessary.

Preparing the system to produce biogas:

Fill the 1000 liter tank with approximately 300 liters of water and then mix between 40 and 80 kg of fresh animal dung with water, breaking up any clumps under water and slowly pour it in. You don't want to expose the bacteria to air so try not to introduce a lot of bubbles as you are mixing. We've used dry animal dung in Palestine and it worked, but you are likely to get better and quicker gas production if the dung is still moist. You can get quicker results if you store the dung for several weeks in an airtight container before adding it to the digestor. You can also avoid the use of dung altogether if you have a source of liquid from somebody else's active biogas digestor. The more you add, the quicker you will get gas because this is all about building up a large healthy population of bacteria.

After you have added all the dung, continue to fill the barrel with water until you reach the overflow hole (the ureter). It is advisable to plug the ureter hole at first so that you can fill the barrel with water all the way to the rim so you can completely submerge the gas collector barrel and drive all the air out.Put the 750 liter barrel upside down into the 1000 liter barrel and open the 1/2" valve at the "anus". Press down on the 750 liter barrel to force the air out and to press it all the way down until it is completely submerged and is nested inside the 1000 liter barrel as far as it can go. If there is still a small airgap because your 750 liter barrel is slightly taller than the 1000 liter barrel (specifically because of the feeding tube or "esophagus" and the gravel, rocks or bricks on the bottom of the tank) this isn't a grave problem but it will slow down initial gas production because the aerobic bacteria need to consume all of the air first and die out before the anaerobes take over.

Wait until the anaerobic bacteria have reproduced and become active and start producing flammable gas before feeding. This can take around 2 to 3 weeks depending on the temperature; we've had systems in colder climates take several months. On the other hand we've had systems in warm environments start within a couple of days. When you use somebody elses active biogas effluent you can achieve flammable gas within 24 to 36 hours.

Be patient.

Regardless of how long it takes, try to avoid feeding the system anything until you are able to ignite the gas. The first days to weeks gas will be produced but it will be mostly CO2 and will extinguish a flame. Do a flame test every couple of days (or just wait if you have the patience). You will see the 750 liter barrel start to rise and when the CO2 concentration drops from 100% to about 40% you will have nearly 60% methane which will burn quite well and safely and will produce a clean clear blue flame.

At this point you can start feeding your system. Start slow -- you have to acclimatize the bacteria to high energy and complex food; actually their are many types of bacteria in your system that need to work together -- hydrolytic bacteria need to break down the food, acidogenic bacteria turn the breakdown products into different acids (propionic acid for example) and carbon dioxide, and acetogenic bacteria break these down into acetate and carbon dioxide which are the real foods for the methanogenic bacteria that make the biogas. To acclimatize them without overwhelming them start out with about 200 grams of food, then work your way up each couple of days by doubling to 400, then 800 then finally between 1 and 2 kg per day. For a 1000 liter system you don't want to exceed 2 kg each day because the water can turn acidic and the low pH will kill your bacteria (if this does happen, either wait for the pH to rise back to between 6.5 and 7.5 or add some baking soda or another buffer -- if some of your bacteria survive the acid event you will just have to wait until their numbers are strong again, if not, re-innoculate with fresh bacteria from either dung or somebody else's effluent. It is a good idea to store some of your own effluent in an airtight jerrycan just in case, and it never hurts to dump dung in from time to time if you have access to it). Do NOT overfeed your system - giving it more food will not give you more gas. A 1000 liter system (1 cubic meter) can give up to 2 hours of cooking gas on 1 burner per day when the temperature is at its optimum of 37 C. In the winter near Mumbai in India they get about 1 hour a day, 2 hours in the Summer. It is best to situate your tank where it gets the most sun each day; black tanks are best; if you only have white tanks, paint them black. In colder climates you will need to put a heat exchanger in the tank and connect it to a solar heater or a compost heater or even use 20 to 40% of your gas to raise the temperature to between 30 and 40 C.

Using your home-made biogas in a kitchen stove:

It should be noted that in order to use butane gas stoves and make them run on biogas you need to make a simple amendments: he first is to expand the gas exit hole (nozzle). This usually simply involves removing the restrictor pin where the gas from bottled gas enters the stove. Because biogas is generally under very low pressure and because it contains about 1/3 carbon dioxide you need to supply gas through a larger opening to get the same amount of thermal energy. The second amendment you might need to make is to minimize the air intake because the biogas won't need to consume as much air as high flow pressurized gas. By adjusting the air you should be able to achieve a clear blue flame with no yellow streaks in it.

Benefits of home biogas:

The home biogas system eliminates your kitchen waste and produces gas and a very rich liquid fertilizer that can be directly applied to plants or your garden. If you let the effluent dry you can use the cakes that remain as a solid fertlizer.

Benefits do not stop at this point --- another application that we have been experimenting with in Egypt is the production of electric power using a modified generator. The modification uses a $190 'tri-fuel' kit from US Carburetion and takes only about 15 minutes to convert. Per cubic meter biogas can generate electricity ranging from 1.3 to 1.5 kilowatts/hr.

Beyond the benefits of using biogas as a waste disposal,solution which is in itself a significant feature, the other benefits of biogas qualify it as a fantastic alternative energy source that can be used without purification or treatments and causes no air pollution -- it can thus replace bottled gas, wood and charcoal and not only reduce respiratory illnesses and the use of fossil fuels, but take pressure off of our dwindling forest resources, saving and protecting habitat for wildlife and protecting watersheds.

Biogas is relatively non-toxic, is colorless and has no odor when it is burned. When it is not burned it has the odor of natural gas (a slight tinge of hydrogen sulfide) so one can easily detect a possible leak and take appropriate action. It has a flame speed of 35 cm per second, slower than natural gas - which actually makes it safe. It has a thermal energy content between 5000 to 6000 kcal per cubic meter. Chinese experiments have proven the following practical applications that 1 Cubic meter of biogas (the normal output per day of a household system using a 1000 liter barrel) can provide:

Run the stove for an average of 2.5 to 3 hours.

Run a lamp of 100 candle power for a period of 8 to 10 hours.
Run an internal combustion engine/generaotor of 1 HP for two hours.
Operate a tractor weighing 3 tons a distance of 2.8 km.
Run a medium-sized runs with a length of 60 cm for two hours.

Saturday, June 12, 2010

T.H. Culhane's presentation at 2010 Emerging Explorer's Conference


Slide 1:(33 seconds)

Hi, I'm T.H. Culhane. I'd like to thank National Geographic, Cheryl Zook, Pat Black, John Richardson and the Blackstone Ranch Foundation for the opportunity to be here in person and for supporting our work. I'll let National Geographic School Publishing start us out with their great introduction on what we do:





Slide 2: (30 seconds)




Those technologies mentioned in the video clip are “home scale” energy solutions made by local people from local materials. We don’t want to reinvent the wheel or try to create something new out of whole cloth. Like Aydogan Ozcan’s use of cell phones as microscopes and Ken Banks use of existing cell phone networks for vital SMS empowerment we also try to repurpose local, “found” materials, and off the shelf, ubiquitous technologies, both real and virtual, analog and digital, to solve the problems of sustainable development and education. We know we can solve many our energy, waste, water and food problems using simple solar and biofuel technologies. In this slide we see technologies we developed in Egypt that use recycled materials we knew would be available in Alaska.

(63)

Slide 3: (30 seconds)



To bring this to scale we need to use our new media technologies and social networking tools, things like google earth and google sketchup, open source 3d animation and multimedia production software to make learning the energy systems easy for people. We use the ipod touch with a handheld projector to erase literacy and language barriers, projecting the animations on walls and rooftop satellite dishes as screens. And we compose songs to spread the message which we take around the world with solar powered music groups to environmental festivals like this one in India.

(93)

Slide 4: (13 seconds)



And the thing is, we can’t just use all this great multimedia technology and educational materials to talk about environmental issues if we aren’t teaching people how to actually solve the problems themselves. This is why we have this two pronged approach -- work collectively to develop safe energy technologies and then use social media to broadcast the solutions.

(106)

Slide 5: (50 seconds)




So in this presentation I’m going to weave together two threads - one is the very simple low cost technologies we are developing and implementing to reduce our consumption of fossil fuels and forest resources,



The other is how we go about spreading the message the these technologies are in fact so simple that you CAN try them at home.





This year I have been blessed to receive, with fellow Emerging Explorer Dr. Katey Walter, the first National Geographic Blackstone Ranch Innovation Challenge Grant for combining our different projects into an application to help the world. Katey is an arctic biologist working on newly discovered microbes that are producing greenhouse gases at freezing temperatures and I’ve been using microbes to clean water and produce biogas for cooking and electricity, heat and fertilizer. We decided to team up, kind of like Wonder Woman and, I dunno, Captain America? ... to see if we can harness these microbes to make garbage to biogas systems more efficient and then use social networking and media technologies as well as airplanes, to take the results from household to household and community to community, around the globe.
(156)

Slide 6: (15 seconds)



This is because when we met last year here we figured that if technology and globalization gave individuals disproportionate power to do bad things and form terrorist networks than by the same logic it could amplify our power to do great things for the world, if we found a way to pool our different talents.

(171)


Slide 7:(13 seconds)


The Blackstone Ranch Foundation Innovation Challenge has given us a way to formally create those synergies. Certainly this motley crew of cartoon action figures makes a formidable league of superheroes. The question is how to bring us all together. What would the first unifying project be for what we call "the Nat Geo E-Team"?


(184)


Slide 8:(40 seconds)





At Solar CITIES the word “CITIES” with a C cubed stands for Connecting Community Catalysts Integrating Technologies for Industrial Ecology Solutions, and we operate with a belief in Collective Intelligence, Crowd Sourcing, Cloud Computing and Citizen Science. We believe the intelligence is in the network and once we pick a project that has rhizomal links to issues we all face in common, our special abilities will start to complement each other. We picked household waste to biogas solutions for our Blackstone project because it provides a possible solution to the challenges of clean renewable energy, public health, waste management, fertilizer and food production, water conservation, wildlife conservation, poverty alleviation and climate change. Not bad for a single simple technology. But how to spread the message so everybody could pitch in with their piece of the puzzle?



(224 seconds)(4 minutes)


Slide 9:(20 seconds)



In 1966 at the age of 4 I read my first Dr. Seuss Beginners Books, “Come over to My House” and learned about the power of social networking to bring peace and understanding between different cultures. The message was clear -- make friends from around the world, from different walks of life and then invite each other to live at each other’s homes for a time and share ideas and perspectives. This way you get to know firsthand the problems and solutions sets available in each environment. As the Irish say “If you want to know me, come and live with me”.

(244)

Slide 10: (5 seconds)




So we decided to go and live in homes in rural villages and urban slums and work together on collective problem solving.
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Slide 11: (15 seconds+ 30 seconds video)



My wife and I moved into the slums of Cairo and built a solar hot water system with our garbage recycler friends but later went back to Europe when our baby was born. But we were able to continue improving the system remotely by making simple animations and sharing them on facebook and youtube with our friends in Cairo




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Slide 12: (3 seconds + 30 seconds video)
We were able to do the same thing with the Biogas systems...





(282 + 30 = 312) 5.2 minutes

Slide 13:(13 seconds + 1 minute video)
We also used game engines to create virtual eco-tours of the slums of Cairo where we were living and were able not only to show the community what the energy systems might look like on their roofs, but create a “slumdog ecotour” livelihood for a couple of our colleagues






(325 + 60 = 385 = 6.4 minutes)

Slide 14:(15 seconds)



One of the people who responded to our eco-tour after discovering it on facebook was the brother of Nathan Wolfe’s UCLA colleague Dr. Anne Rimoin. Mike Rimoin, who is a specialist in vegetable oil truck conversions, came to Cairo and ended up figuring out with us how to convert Hanna’s electric generator to run on biogas, something he wants to apply to his sister's work in the Congo.



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Slide 15:(18 seconds)




But while everybody who visited us who got to know the potential of Biogas saw its application in tropical climates, we were all stuck when trying to figure out how to apply it on a household or community scale in the winter, in northern latitudes and in high altitudes, such as the mountainous areas of Africa where the chimpanzees and gorillas are going extinct because of deforestation, primarily for creating charcoal used for cooking and water heating.

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Slide 16: (4 seconds)


So this is where Dr. Katey Walter’s piece of the collective puzzle fits in.

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Slide 17:(4 seconds)


Katey has shown that the bacteria in her neck of the woods are active when all other bacteria are hibernating.


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Slide 18: (10 seconds)


Retrofitting an abandoned container as a laboratory, Katey and I and her team spent January working with Alaskan science teacher Adam Low and his high school kids to create a biogas microbial laboratory where Katey is doing rigorous scientific research on how to make a better bacterial brew.


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Slide 19: (9 seconds)


Rather than simply publish our results in obscure academic journals, however, we are communicating the results and plans for construction to other students, scientists and activists using multimedia and 3d digital modeling.


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Slide 20:(15 seconds)


When local pizza restaurant owner Brian Wildrick and his team Todd Blaisdale and Stan, learned from us and the high school students about the technology for turning their kitchen garbage into fertilizer for their fresh tomatoes and fuel to heat the tomato sauce, we and the students built a system with them at Harborside Pizza, creating the first commercial application of the technology which they talk about on their facebook page.




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Slide 21:(17 seconds)



But simply spreading the technology from an Alaskan High School to a pizza restaurant is only the tip of the proverbial iceberg. Katey and I decided that the real power of the Blackstone Ranch grant lay in using the social network of National Geographic Explorers as the community of catalysts whose homes and work sites could become the growth poles for this initiative. And through the digital Global Action Atlas the world community could observe and participate.


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Slide 22: (6 seconds)


We used the Blackstone Grant to bring our Egyptian Solar CITIES colleague Hanna Fathy from the slums of Cairo to other African slums to share how he turns garbage into fuel...


Slide 25:(5 seconds)


and discussed with the local people how we might replace the charcoal that is destroying the forest with fuels derived from waste.


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Slide 26:(7 seconds)


Then we began working with Beverly and Dereck Joubert who invited us to their home away from home in Kenya’s Great Plains conservation area


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Slide 27: (7 seconds)

At Olo Dunyo Waas we worked together with the Masai to improve and build seven different kinds of biogas digestor, appropriate to the local conditions.


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Slide 28: (2 seconds)

Some underground

Slide 29:(2 seconds)

Some out of shipping containers

Slide 30: (2 seconds)



Some out of brick

Slide 31:(2 seconds)


Some out of old oil drums.

Slide 32:(2 seconds)
Letting everybody try out their own pet idea or theory without being afraid to fail.



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Slide 33:(12 seconds)
We were able to involve both local children and ecotourist children who might take the idea home to their country. In true crowd sourcing fashion it was the kids who helped us come up with the innovative idea of using plastic pipes as bacterial fuel rods



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Slide 34:(4 seconds)


Which prepares a home to both cold loving and warm loving bacteria.

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Slide 35:(10 seconds)


Working with kids brought out the circus clown and entertainer in me. For example, to show the men there is no shame in handling animal wastes (which is traditionally a woman’s job) we juggle cow dung before putting it in the digestor…
Then everybody was willing to get their hands dirty and pitch in.

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Slide 36:(9 seconds)


In Tanzania we went over to Grace Gobbo’s house and worked with her and the Jane Goodall Institute to build digestors in the villages around Gombe to help protect the chimpanzees.

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Slide 37:(5 seconds (+ 2 minutes video)
Grace and the Children came up with this song, which they used to spread the news of the technology from village to village.




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Slide 38:(12 seconds)








And then we took the show on the road sharing biogas videos and songs all over Burundi and Rwanda as we traveled through the countryside by bus, foot, boat and motorcycle to spread the good news that could help preserve the mountain gorillas and alleviate poverty and health risks.

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Slide 39:(10 seconds + 1 minute video)


Again the children, ever curious and experimental, helped us: We found out from children in one village that there is tremendous heat in a compost pile that can be used to keep the biogas bacteria at a more productive temperature overnight, on cloudy days and even in the winter.




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Slide 40:(7 seconds)


A few weeks ago we took the show on the road to Israel and Palestine to work with Beverly Goodman, who is planning to turn her new home into an eco-demonstration home.


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Slide 41:(23 seconds)



On this trip we got a chance to go with the U.S. State Department and US Embassy into the West Bank and Ramallah to conduct environmental technology workshops and build a biodigestor with Engineers without Borders near Bethlehem at the Palestinian Wildlife Society. There they told us they would like to help solve the political crisis in Gaza by teaching fellow Palestinians to create a strong and peaceful green recycling economy independent of foreign aid. The day ended with an delightfully ironic stone throwing ceremony - throwing stones into the digestor to create safe homelands for the bacteria…


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Slide 42:(5 seconds)

And an impromptu solar powered musical concert that ended with us donating the foldable solar panel to their eco-demonstration home.


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Slide 43:(8 seconds)



Finally, we are now planning with Nathan Wolfe to bring biogas to the Congo to help in the work he does with UCLA's Dr. Anne Rimoin. Dr. Rimoin is conducting research into understanding and fighting dangerous diseases like AIDS and Ebola and this research requires refrigeration of vaccines, blood and medical samples in remote areas that have no electricity.


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Slide 44:(10 seconds)


There we will adapt a technology Katey Walter showed us in Alaska for converting geothermal waste heat into refrigeration so that we can run medical sample and vaccine freezers in the Congo off of garbage fueled biogas. ( Katey Walter introduced us to the adsorption chiller technology developed by Bernie Carl at Chena Hot Springs in Alaska, and by modifying the concept at the Joubert's site in Kenya we are confident we can run medical refrigerators off of biogas -- what Nathan calls "waste to cold technology".)


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Slide 45: 6 seconds + 2 minutes video)


And we will continue to share the results of all this work through song and multimedia that everyone can watch on youtube…




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13 minutes and 30 seconds

(You can see the full version of our melodic-mnemonic biogas song (6 minutes) here:)






(Photo: Presenters at the National Geographic 2009 Emerging Explorers Symposium)