Generating Energy From Waste

>Scientists are testing out biofuels made from wastes at teeside university. Biofuels are usually made from organics such as crops. What these researchers are doing is seeing if they can use waste materials such as domestic refuse and sewage sludge to produce biofuel instead of crops. If they are succsessful we can hit two problem causing “birds” with one stone. Eliminate the build up of waste, and fix our energy problems, reducing our reliance on fossil fuels. heres a link
Esteban Pacheco


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    we get updates almost on a daily basis, about new, affordable technologies to convert toxic/pathogenic sewage sludge to clean, renewable energy. Below are just a few:

    Dr. Caroline Snyder of Sandwich, NH, states: “Here in NH we are working with a similar legislative commission to
    identify the most suitable technologies that can turn sludge and CAFO manure into a renewable energy source. To use sludge as a source of
    renewable energy, rather than as a hazardous fertilizer is a win-win situation: it protects health, groundwater, soils, and live stock AND
    reduces the use of fossil fuels, thus helping to slow down climate change.”

    Europe and Japan are way ahead of the US in using sludge to produce biogas and thermal treatment (thermal oxidation, gasification, pyrolysis, etc.) . to produce clean electricity, heat, fuel, power/energy with little to no toxic residues or air pollution. In many cases, private companies will build the facilities. European countries are using alternative solid waste and sludge -to-energy technologies to reduce both greenhouse gases and their dependence on foreign gas and oil imports.

    Numerous cities in Sweden transform sewage waste into enough biogas to run thousands of cars and buses.

    GERMANY – BIOGAS One firm based in Tannhausen, Germany – LIPP GmbH – reports that it has built agricultural, community and industrial
    anaerobic digestion plants using what it calls the “Double Fold System,” processing such feedstocks as municipal biosolids, slurry and manure. Explains Roland Lipp of Lipp Company, “The modular construction consists of a stainless steel sludge container and an integrated gas buffer storage, together with all necessary technical components and safety fittings.” For additional information about the Lipp anaerobic digestion system and developments in Germany, visit

    On a central California dairy, Pacific Gas & Electric recently began producing natural gas from cow manure.

    California – we are hopeful for the success of the new EnerTech project east of Los Angeles, to process hundreds of tons of sewage sludge into a mixture of high heat and high pressure, turning it into a pellet-like fuel that can run small power plants.

    St. Paul, Minnesota, has upgraded to fluid bed incinerators which operate more efficiently and effectively, and produce heat and electricity to run the waste treatment plant.

    In Stamford, Conn., the town’s pollution control authority has started turning the sludge extracted from its wastewater treatment plant into
    electricity through a process called gasification. The town also turns the sludge into solid pellets that it sells as fertilizer to the state of New York.

    March 25, 2008 — Sanford, Fla., has entered a long-term contract to have the city´s wastewater sludge converted to green energy. Under the 20-year deal, Houston-based MaxWest Environmental Systems Inc. will dispose of Sanford´s biosolids by gasifying the material to produce a synthetic gas. A thermal oxidizer then will convert the syngas into renewable thermal energy. Sanford will use the energy to replace natural gas to power a new dryer at its South Wastewater Reclamation Center. It will save the city $9 million over the 20-year contract, said Paul Moore, Sanford utility director.

    The Sewerage Bureau of Tokyo Metropolitan Government turns dewatered sewage sludge into fuel charcoal for thermal power generation.

    The sewage waste industry recognizes sludge to energy technologies may offer an alternative to land application: ” In addition to the State of Science Report, WERF
    (Water Environment Research Foundation) has two fact sheets that summarize the current situations. Wastewater Sludge: A New Resource for Alternative Energy and Resource Recovery, is a basic primer for the non-technical audience, public officials and consumers. A Technical Look at Energy and Resource Recovery from Wastewater Residuals provides wastewater treatment professionals with an overview of some of the specific processes. ”

    From, 5-7-08. Terrabon Breaks Ground on Plant That Will Test Low-Cost Biomass Conversion Technology for Commercial Use. HOUSTON — Terrabon, L.L.C. announced today that it has broken ground on a biofuels conversion facility in Bryan, Texas, that will test the scaled-up, commercial feasibility of its MixAlco(TM) technology, which converts readily-available, low-cost, non-food biomass into chemicals that can be processed into ethanol and renewable gasoline fuels. The MixAlco technology uses non-food feedstocks such as municipal solid waste, sewage sludge, forest product residues and non-edible energy crops to create acetic acid and alcohols that may be converted into fuel. The new semi-works demonstration plant is designed to confirm the engineering for the tecnology on a larger scale.

    In the UK, Professor David Stuckey said, has developed an environmentally sound system which actually creates energy and clean water, and reduces sludge by 90 per cent. New funding will help Professor Stuckey to build and pilot a new plant, known as a Submerged Anaerobic Membrane Bioreactor (SAMBR), which will be located alongside the Cambridge Treatment Plant. His technology employs a revolutionary new technique which uses membranes to filter wastewater out for potential reuse, and bacteria that doesn’t require oxygen to breakdown waste

    OHIO – Since mid-October 2007, Akron and KB Compost have been fine-tuning the plant that turns sludge from the city’s sewage treatment plant into a methane-rich biogas that powers an electric generator. “If the new facility works as well as expected, Akron will look into expanding the operation and shutting down the composting plant, which triggers odor complaints from people living in and at the edge of the Cuyahoga Valley, Plusquellic said.”

    ATHENS, GREECE – The plasma gasification process has been demonstrated in many of the most recent studies as one of the most effective and environmentally friendly methods for solid waste treatment and energy utilization. This method is applied here to the treatment of sewage sludge. Results are presented for a case study concerning the Athens’ Central Wastewater Treatment Plant, at Psittalia Island. An integrated process is proposed that includes also pre-drying of the sludge. By optimizing the process with the use of the GasifEq equilibrium model, it is demonstrated that plasma treatment of 250 ton/day sewage sludge with 68% moisture results in a net production of 2.85 MW electrical energy.

    ABU DHABI – EnerTech’s SlurryCarb technology can turn human waste into a fuel that can be used to replace coal. EnerTech Environmental, a company working to turn human and industrial wastes into energy, said Wednesday it has agreed to build a demonstration facility in Masdar, a green city being built in the United Arab Emirates.

    EnerTech’s plant will process the sewage sludge produced by the several thousand workers laboring to build the city, which is in the country’s
    capital, Abu Dhabi. Although the amount of waste the plant will process is still being finalized, Brian Dooley, director of marketing for the Atlanta-based
    company, said the project is just the first step.

    “Once residents start populating the city, that’s when we would talk about building a larger facility” that can handle the needs of the entire city, he
    said. The city is expected to house 47,500 people.”
    Helane Shields, Alton, NH 03809

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