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Many distilleries (typically associated with sugar mills) in India are keen to devise methods to derive more value from the spent wash.
Distillery spent wash is the unwanted residual liquid waste generated during alcohol production; the pollution caused by it is one of the most critical environmental issues today. Despite standards imposed on effluent quality, untreated or partially treated effluent very often finds access to watercourses.
Some of the sugar mills have started concentrating this spent wash and use it for composting. The spent wash is rich in COD and BOD, and thus a question that is arising is whether the spent wash could be used to recover more value - either using biomethanation or even using it along with bagasse for firing the boilers.
Do folks here know anything about the feasibility of using this spent wash in biomethanation or in combustion?
Depending on which vendor (and in which part of the world) you ask, anaerobic digesters could cost anywhere between $2 million - $ 4 million per MW. Now, that's a huge amount of money, well, it is almost the same as solar PV! (But solar PV costs are coming down all the time, so you can expect that figure to be much lower 3 years down the line).
Why should digesters cost so much? If they are just fertile grounds for methanogenic bacteria to have fun and break down organic matter into methane, what is the technology sophistication that makes it cost so high?
And more important, how can these capital costs be brought down?
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I am proposing a new solution to the algae biofuel industry. Using electrical stimulation, I have created biodiesel from algae for $0.96/gallon. Come view this presentation of my project
in Biomass Power Production Biobutanol Biodiesel Algae Fuels Biomass to Liquid Batteries Biodiversity Agri Waste Management Anaerobic Digestion of Waste Bioremediation Batteries for Electric Vehicles Biopolymers and Bioplastics Biotechnology Biomimicry
Every responsible and sustainable Earthizen believes in Recycling as a very important part of Green Living so as to take advantage of already existing processed material to avoid the use of more resources and raw material.
What many of us forget is that before Recycling, come the 2 other Rs - Reduce and Reuse.
To Reduce is as important as it brings down the energy spent on production and also reduces the requirement of the resources that are used to produce the object.
Next comes Reuse - which basically prevents the need to recycle at all if an object can be…
AHMEDABAD: Narendra Modi would not have thought of Gujarat International Finance Tec-City (GIFT) as the test-bed for future city technologies, but his dream project in Gandhinagar may well have this interesting spillover. Work on the proposed Rs 78,000-crore nano city has now started, and the first occupant may move in by March. By the time the first phase is completed in three-and-a-half years, this special economic zone (SEZ) would have tried out, on a small scale, some contemporary urban design ideas. GIFT would have a command and control centre to monitor the IT infrastructure and respond quickly during emergencies…
A Singapore startup Eco Wiz (http://www.bio-ez.com/)has grabbed name for an innovative food waste decomposer. The tool, dubbed Eco Wiz is meant to convert food waste to water. Owner of the company, Renee Mison, a former marketing professional, met the Korean-made food waste-to-w - http://www.ecofriend.com/eco-wiz-converts-food-waste-water.html
An emerging group of commercial companies see a viable business opportunity in North America around building, owning and operating larger scale anaerobic ... - http://www.environmental-expert.com/articles/digester-developers-target-mixed-organic-waste-streams-258491
Dry Anaerobic Digestion for University of Wisconsin
The first high solids dry fermentation anaerobic digester in the Americas has been inaugurated at the University of Wisconsin, Oshkosh.
The biogas plant, owned by the University, is designed and constructed by BIOFerm Energy Systems, the dry fermentation specialist in the Viessmann Group.
Dry fermentation works on organic waste inputs that typically have a moisture content of less than 75% and, in contrast to traditional wet fermentation systems, does not use the addition of liquid to create a fluid mixture that can be pumped through the system.
Instead, dry fermentation works via a batch process in which organic waste is loaded into individual fermenters of the biogas plant on a 28 day cycle. The waste rests in a stationary pile while a liquid solution containing the essential micro-organisms (often termed percolate) is applied to the load at regular intervals.
Waste Management has begun construction of a $13-million landfill gas-to-energy facility near Drummondville, Quebec
The facility, expected to be operational by December 2012, will generate 7.6 megawatts of electricity using methane from Waste Management's 2,000 tonne-per-day Saint-Nicephore landfill.
As reported by the U.S.-based Waste Business Journal (www.wastebusinessjournal.com), Waste Management has begun construction of a $13-million landfill gas-to-energy facility near Drummondville, Quebec. - http://www.solidwastemag.com/news/waste-management-begins-constructing-13-million-landfill-gas-to-energy-plant-in-quebec/1000609687/
Berlin’s Senator for Health, Environment and Consumer Protection, Katrin Lompscher; Spandau district councillor Carsten-Michael Röding (Department of Building, Planning and Environmental Protection); and BSR CEO Vera Gade-Butzlaff attended the recent ground-breaking ceremony of a new biogas plant in Berlin being constructed by BSR Ruhleben to provide biomethane to power its fleet of compressed natural gas (CNG) powered refuse collection vehicles. Vera Gade-Butzlaff, CEO of BSR, says the new plant will be capable of displacing 2.5 million litres of diesel per year.
“About half of all collective kilometres of BSR in the future will be accomplished as climate-neutral. This usage also…
Biodigestion Processes in Palm Oil Mills - especially anaerobic digestion of Palm Oil Mill Effluent - http://www.globalmethane.org/documents/events_ag_20090127_techtrans_shanklin.pdf
Conversion of liquid organic wastes to bio gas is routine but not much popular.Biogas
generation from solid waste is peaking world wide.We in India having favorable climatic
conditions to do it but we are much behind. We need to come together and spread perfect technology for anaerobic dig ester.We still have to over come image that anaerobic digestion is KVIC model Gobar Gas PlantCompany : Brookclean Ecosolutions Pvt.Ltd.
Covered anaerobic lagoons - A simple, low capital cost, anaerobic digestion process.
Korat-lagoon-AD-biogas-digesterThis process has been around since the development of geomembrane lining systems for low cost water storage in the 1950s, when it was soon realised that for site owners which possess abundant land the use of these linings to form lagoons provides the lowest possible cost for large scale water storage.
A good report on the use of anaerobic digestion for power, in the UK - http://www.face-online.org.uk/resources/factsheets/discovering/anerobic digestion and biogas.pdf
New England Farmers Will Soon Be Harvesting Energy
Farmers produce all sorts of goods in order to earn money, and soon they may be able to add renewable energy to that list.
A new machine called the digester - which look like a giant silo - is able to take waste such as manure and discarded crop material and turn it into energy. The digester turns the waste into biogas, which is then fed into a nearby generator to produce electricity. This electricity is then fed back into the grid, earning the farmer a tidy profit. Up to $20,000 a month, in fact.