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Powering Villages from Rice Husks

By Brevy Cannon, University of Virginia
May 19, 2008   |   20 Comments

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"Our relatives still do not have electricity. We wanted to give back to those areas."

-- Manoj Sinha, Founder, Husk Power Systems
20 Reader Comments
Comment
1 of 20
May 21, 2008
Good article. The process reminds me of Bioten, created here in Tennessee, for many ag wastes.
The Bioten System receives bulk biomass, processes it (shred/grind) to produce uniform-sized fuel particles that are dried with some of the waste heat, then injected and burned in a proprietary combustion unit. It can use a variety of bio-fuels: woody or cellulose fiber agricultural wastes with a ready source of BTUs. Agricultural by-products such as sugar cane stocks (bagasse), rice hulls from rice milling operations, nut shells, or wood processing waste are common examples. Fuel processing equipment may need to be altered to handle different raw input.

The Bioten demonstration plant at Red Boiling Springs burned sawdust purchased from local mills prevalent in that forested part of rural Tennessee. Previously, such sawmills had left their waste wood products to rot and decompose on the valley floor, polluting streams, by increasing the biological oxygen demand on the receiving water body, effectively depriving fish and aquatic plant life of needed oxygen. The Bioten process provides a market for such routinely abandoned wastes, and thereby reduce the environmental footprint of such industries.

The plant does not have or discharge a wastewater stream. Combustion exit gas, while hot, is very low in emissions (no sulfur oxides and minor nitrous oxides). The Bioten plant does not require a precipitator or scrubbing device, and, because of its Green Power orientation, Bioten captures and reuses waste heat or exit gas from the system, just as nature does in recycling waste products from one part of the ecosystem to another. At Red Boiling Springs that waste heat was used to heat greenhouses, which are otherwise dependant on scarce, expensive natural gas. Bioten also recycled its virtually carbon-free, combustor bottom ash for use in pottery glaze. Alternatively, the Bioten process can provide process steam or heat for a nearby manufacturing facility.
Comment
2 of 20
May 21, 2008
Rice husks might not turn into compost very quickly if nitrogen is not added to the mix. If the nitrogen from human and other animal excretions are added to the mix, then rich compost can likely be made quickly. The added benefit is that the nitrogen, that might otherwise have made it into a drinking water source, won't get there if it is used in the composting process. In Portland, Oregon, an M.D. has been composting this way for over 15 years, as have many others who feel bad about the drugging of our river fish (without their signed consent) every time we have a Combined Sewer Overflow (a common problem in U.S. cities).

Composting above ground keeps the nitrogen in rich humus, along with phosphorus, potassium, and other nutrients for people who cannot pay for external inputs. With a proper mix, it also holds the pile to a temperature of 150 to 160 degrees F, which pasteurizes the stuff quickly. That 150 is not enough, by itself, to turn a turbine, if you ran water through it, but preheating for solar would allow steam to be generated pretty quickly.

I'm not trying to rain on the parade here. I just want to point out that we don't have to turn everything into a portable liquid to be burned up. There are many elegant ways to produce energy.

Where there is freedom and exploration, a thousand flowers can bloom without having their heads cut off before their natural life cycle runs out.

Unfortunately for ordinary people in the U.S., efficiency is largely against the law. You can get a variance if you can afford it, and it might trickle down as a precedent for the peons, if we live long enough.

This allows less corrupt places to get ahead if they work cooperatively.
Comment
3 of 20
May 21, 2008
Excellent application of approriate technologies, which we in Haiti are very interested in. If you may consider a discussion or joint venture for expanding your Husk Power Systems, in Haiti, we would welcome the opprotunity. Presently, our arn foundation is establishing 10 regional nurseries through out Haiti with some locations in proximity to rice plantations where this power source is very much needed.
Comment
4 of 20
May 21, 2008
Great job guys & UV. We must all look around and utilize the assets we have. There is no one solution.
Comment
5 of 20
May 21, 2008
Is there value to the ash for soil amendment, or bricks etc? And/ or is it a pollutant?
Comment
6 of 20
May 21, 2008
This is very good project, but Judy is talking further improvement in Carbon foot print of that process or with new method.....

Let us see anybody can get this grant to research for improvement.....

U.S. Energy Dept. To Fund Coal Research

May 20 - United Press International The Department of Energy is calling on U.S. colleges and universities to propose new projects to enhance the long-term use of coal.
Officials said the announcement marks the start of the 30th year of the department's University Coal Research program -- its longest-running student-teacher research grant project.
Since the program's inception in 1979, nearly 1,765 students have received hands-on research experience investigating long-term solutions for clean and efficient use of coal, officials said.
This year, the program will make available $2.4 million to fund projects with a maximum of $300,000 per project. Each 36-month project will involve one or two colleges or universities.
Research proposals are being sought in three areas of interest: computational energy sciences, material science and novel materials for sensing or monitoring in extreme environments of fossil energy systems.
Proposals are due by June 10. The National Energy Technology Laboratory, which implements the program for the Energy Department, will name the winning projects in December.
http://www.fossil.energy.gov/news/techlines/2008/08015-UCR_Competition_Begins.html

Best of luck...

-Paresh Trivedi
NJ
Comment
7 of 20
May 21, 2008
In your academic research have you come accross the work done at the Technical University of Bandung, Indonesia. They developed the first reliable ricehusk gassifier without pressure tank in 1991, which produced gas which was clean enough for a diesel engine (10% diesel fuel) and continuous operation. In a rural power station you need at least 2 gassifiers and 2 engines for continuous 24/7 operation.
Good Luck.
T. Hans Jansen
Development Coach
Energy Efficiency
thansjansen@hotmail.com
Comment
8 of 20
May 21, 2008
You always have to have a naysayer in every crowd, don't you Judy?
Comment
9 of 20
May 21, 2008
I am happy for the villagers and this was a nice application of technology and business expertise. However, I don't see that carbon emissions are necessarily saved. Compared to what other options? This is not a closed system. If the rotting piles were compost in the making and if the compost was used to enrich the soil, then this clever solution will also manifest as lower rice yields in the future and less carbon sequestered in the soil. As a method for using space and materials, perhaps it would have been better to ship solar panels to India and find other uses for the husks. How long will it take to recover the embedded energy of the power plant? It will never be recovered because it will always be based on burning. How long will it take to recover the embedded energy in a solar panel? No more than 4 years, maybe 2. Including shipping.

Partly broken down, uniform lignin, which can be made into adhesives and coatings, which may be worth hundreds of dollars per ton. Good business, good engineering, but is it really good long-term policy?
Comment
10 of 20
May 21, 2008
Good work! This generation method really does seem sustainable, and you should earn money from it! That way, you'll be able to roll it out even further across the rice producing regions, and maybe find other agricultural wastes that are compatible.
Comment
11 of 20
May 21, 2008
Dear Manoj, Ransler & Gyanesh

Congratulations for the honour & awards. Some companies in Punjab & Chattisgargh states are generating power at MW level, using rice husk ( via steam turbine method ) in India for at least few years now. Gasification poses little problems due to high Ash content but still suitable gasifiers are available in India. Furthermore, technology has been evolved to further refine ash for use in toothpastes/tyres, Only question is, which method is economical and generates lower emission. Single gasifier at multi MW level are not available and for a small power plant of, say 6 MW ( standard in steam turbine power generation ), few of them will be required to produce enough CLEAN producer gas and then feed it in engine to which a generator is connected. Using this gas in gas Turbine is PROHIBITIVELY expensive.

At lower levels of power generation, say 250 kw or 500 kW. Gasification can greatly help to solve the power problem, moreso with the soaring crude prices.

With good wishes & kind regards

Ashok Toshniwal, Bangalore, India
ashoktoshniwal@yahoo.com
Comment
12 of 20
Thats great, they give a good idea to utilize fossil meterial and generate electricity. Such kind of many fossil meterial can be utilized, such as fossil from sugar-cane, grass, dry leaf of the trees and so on.............
Comment
13 of 20
Many many thanks to Mr.Sinha, Mr. Ransler and Mr. Panday for their invention. The Rice Husk Generator will be very helpful for people of third world countries like Bangladesh, India, Pakistan, Burma, Thailand, Vietnam etc prducing rice but living without electricity. The UNO, World Bank, ADB, IMF etc may arrange monetary help for the project.
Best regards
Mohammad Abdur Razzaque
Bangladesh
Comment
14 of 20
May 21, 2008
A great idea serving the Environment. We would be interested in applying such technology in Egypt. If you have plans to expand your business in our area, my company would be interested to partner with you. My email: hatem@city-pulse.net
Best regards
Hatem Abed
City Pulse
Comment
15 of 20
May 21, 2008
WELL DONE MR. SINHA, MR. RANSLER, AND MR. PANDEY.
IT IS HIGHLY COMMENDABLE AS YOU HAVE NOT LOST YOUR ROUTES
AND RETURNED HOME TO GIVE BACK TO YOUR PEOPLE.
PLEASE KEEP YOUR SPIRITS HIGH, ONLY POSITIVE THINKING FOR YOUR PEOPLES IS GREAT THING.

WITH BEST REGARDS,
S.H.FATIMI,CE,
IPC-UK LTD.
fatimi@consultant.com
Comment
16 of 20
May 22, 2008
China is an obvious market. They're plagued by blackouts and have a lot of rice husks on hand i believe.
Comment
17 of 20
July 5, 2008
Really interesting article and initiative; a note of caution. I fundamentally disapprove any initiative that converts raw materials, even so called waste by-products, of edible products into fuel. It is waste rice husks today but tomorrow it will be rice grown purely for fuel. At the current rate of fuel costs, converting pure rice to fuel is better than risk husks; husks contains less than 10% of the active ingredients convertible to fuel compared to rice kernel.

4 billion people are fed on rice as staple and affordable source of protein and starch. This I am afraid will result high cost of food, social unrest and the Mad Max syndrome!!! We have seen the folly of sugar cane and Corn which is now taking up good quality arable land to make fuel. The article also suggest coffee beans... what next?

This not a RENEWABLE source of Power but REGRADABLE (social and economic) source of Power.

Concentration should be on Solar, Wind and more research in Nuclear for safe energy supply. France produces more than 75% of its energy needs from Nuclear today!!! Especially India which probably has the best quality intellectual capital to develop this technology......if the US allows them, without being accused of developing WMDs!!!

Source of information on France's nuclear power -
"France derives over 75% of its electricity from nuclear energy. This is due to a long-standing policy based on energy security.
France is the world's largest net exporter of electricity due to its very low cost of generation, and gains over EUR 3 billion per year from this.
France has been very active in developing nuclear technology. Reactors and fuel products and services are a major export. http://www.world-nuclear.org/info/inf40.html"
Comment
18 of 20
July 14, 2008
Congratulations to Charles Ransler and Manoj Sinha! The availability of Rice Husk Power Systems is wonderful.

Is it possible to know more about the systems and to discuss the business of replicating the systems to many other villages in the rice belt of India.

Anil Misra. New Delhi
Comment
19 of 20
July 25, 2008
Nick, you are correct, The Bioten renewable energy biomass combustion system can provide 5-25MW of clean electrical power and substantial heat which can be used to distill water at the rate of 200,000 gallons to 10,000,000 gallons per day. While the system requires no water to power its hot air turbine it can be coupled with a heat exchanger to produce bountiful supplies of clean water for local use.

This would not only power an entire village of substantial size but also provide for their clean water, sanitation and industrial needs. All fueled with multiple biomass sources, including rice hulls, animal manure, human biosolids, garbage, baggass, wood chips, and even coal.

For power plants more along the size discussed in this excellent news article our gasifier has been providing all the heat, hot water and electrical power for our Texas R&D facility for almost 2 years on sawdust. Rice hulls and other biomass work just as well from 1 - 150 KW.

Neal Van Milligen
Bioten Power and Energy Group
www.biotenpower.com
Comment
20 of 20
November 12, 2008
congratulation for the winners.

pls review this links, where also some innovation for the bex gen entrepreneur.

http://seekinvestor.wordpress.com/2008/09/13/plant-protein-concentration-production-and-export-asking-investment-from-the-genuine-investor/

http://ricehuskproductionandexport.wordpress.com/2008/09/13/3/

will be satisfied, if these themes r useful to any new entrepreneur.

regards,

hafiz
88-01710-962792
seekinvestor2007
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