With landfill sites reaching capacity around the world, more and more municipalities are incorporating waste to energy technologies into their waste management plans. Waste Management World writes about the buzz surrounding plasma arc gasification as an alternative to traditional waste incineration systems which can emit pollutants.  Last week we told you that Ottawa, Canada approved the construction of a plasma facility to be in operation by 2014. The process involves heating waste to the temperature of the surface of the Sun (4000ºC – 7000ºC) using an electric arc in a torch to produce a synthetic gas (syngas) and vitrified slag, a rock-like glassy by-product. The syngas is then pushed to high pressures to turn a turbine to create electricity. Alternatively, the syngas can be used to produce biofuels, ethanol or biofertiliser. You can read about the process being used by the Ottawa company, Plasco Energy, here.

Bloomberg tells us that Hawaii’s gas utility, The Gas Company, has a new plant that will transform vegetable oil, coconut oil, and other fats and oils into synthetic natural gas. This process will replace imported crude oil. The company aims to produced half of its gas from renewable sources. The state of Hawaii wants to have solar, wind, biofuels and other renewable resources supply 70% of the energy consumed in the islands by 2030.

From the Moberly Monitor we learn that the Missouri city will soon have a biodiesel plant in operation.  By 2013 the facility expects to produce 10 million gallons of biodiesel annually from animal oil and some vegetable oil as its biomass inputs.

Nanjing, China is turning kitchen waste into biofuel and fertiliser says Bernama. Until now, the kitchen waste had been put in landfills where it ferments underground and releases the greenhouse gas methane. Now half of it is being converted into biofertilizer and biodiesel.  The biodiesel can be used for automobiles or electricity generation.

edieWaste reports that the anaerobic digestion (AD) industry has been focusing on food manufacturers, supermarkets and local authorities for the supply of food waste and may be missing out on other opportunities. UK experts say that food waste from hotels, pubs, clubs, restaurants and schools is an untapped market that can further decrease the amount of food going to landfills and increase the amount of renewable electricity available to municipalities.

England’s Devon county will have an anaerobic digestion facility says theEngineer and BioEnergy Insight. The facility will process up to 75,000 tonnes annually of municipal and commercial/industrial waste to generate 3.2 MW of renewable electricity for the National Grid, in addition to digestate for use in local restoration as a soil conditioner. The AD plant will use unsuitable paper, cardboard, packaging, woody plant wastes, unsorted municipal waste, and high-organic supermarket and kitchen food waste as inputs. The heat produced (3.8 MW) will also be used to produce steam to be used in the AD tanks, reducing the amount of energy the whole system needs. See also here.

Waste Management World notes that the county of Gloucestershire, England will also have a waste-t0-energy facility. The plant, to be operable by 2015, would divert over 91% of Gloucestershire’s residual municipal waste from landfill, generating an estimated 116,000 MW hours of electricity annually – sufficient to power more than 25,000 homes.

Landhi, Pakistan will have a bio-waste to energy facility reports the Business Recorder. The Landhi Dairy Farmers Association are to supply from 3,500 to 4,000 tons of cattle manure on a daily basis to the Karachi Electric Supply Company to be used as feedstock to produce bio-gas for electricity generation.

Watauga County, North Carolina, has started turning its landfill into electricity writes the Watauga Democrat. The facility should create about 900,000 kilowatts of electricity per year, or enough to power about 60 average households. Any surplus will flow back into the grid and will be sold to Duke Energy Carolinas. The country expects to earn about $72,200 per year, including savings of about $30,000 on electric bills and electricity sales of about $42,200 per year. It should see its roughly $245,000 investment pay off in about four years.

Kinross, Michigan will have a 20 million gallon per year commercial-scale cellulosic ethanol facility says Citybizlist.  The operation, to be completed by the end of 2013, has the ability to be expanded to 40 million gallons. It will convert hardwood pulpwood into ethanol for transportation. Most ethanol comes from foodstocks like corn and sugarcane.

A spa resort in Germany is to be powered by biomass reports AZoCleantech. Local fresh wood chips will supply the input to generate 1,000 MWh of electricity and 4,000 MWh of heat per year to operate the resort.







Tags: , , , , , , , , , ,