28 Jul 2008
Plans for a huge increase in waste-to-energy plants across the UK are at risk of being "derailed" as a result of protests from green groups campaigning against local waste incinerators.
That is the stark warning from David Williams, chief executive of renewable energy specialist Eco2 and chairman of the Biomass Sub Group on the government's Renewable Advisory Board.
Speaking to BusinessGreen.com, Williams said that groups such as Friends of the Earth were seeking to stir up public opposition to waste-to-energy facilities at a time when the government has just signalled its support for the technology as part of its new renewable energy strategy.
"Every few years the government puts forward a renewables strategy including incineration, only for groups like Friends of the Earth to campaign against it, " he said. "Every time the government has backed down and there is always a chance it could happen again."
His comments came as Friends of the Earth last week joined with campaign group the UK Without Incineration Network (UK WIN) to release a map showing that over 100 waste incinerators are currently being planned across the UK.
Michael Warhurst, senior resource use campaigner at Friends of the Earth, said that the planned incinerators would lead to high levels of pollution for local communities and result in millions of tonnes of recyclable material being wasted.
"The best thing to do with waste is to prevent it or recycle it," he said, adding that local councils under pressure to reduce the amount of waste going to landfill as a result of the EU's landfill directive should focus on increasing recycling rates or developing greener forms of waste-to-energy technology, such as anaerobic digestion, rather than looking to burn rubbish.
He also questioned the green credentials of many biomass projects based on waste incineration. "These projects are being marketed as renewable energy, but they are not because a third of what is being burnt is fossil fuel derived," he argued. "Most waste-to-energy plants are more carbon-intensive than natural gas and are very inefficient."
However, Williams countered that modern waste-to-energy plants are far cleaner and more efficient than Friends of the Earth claims, adding that historic concerns over air pollution from incineration meant that the sector was very tightly regulated.
He added that the argument that anaerobic digestion (AD) would offer a greener alternative than biomass plants was a "red herring", arguing that many AD technologies fail to adequately sterilise waste material and, as a result, it ends up in landfill anyway.
With many local councils currently considering plans for new waste-to energy plants there is an urgent need for greater clarity over their environmental impact, according to Paul Bettison, chair of the environment board at the Local Government Association. "We currently have a situation where council A listens to expert B and makes one decision, while council B listens to expert B and makes a different decision [on what to do with landfill waste]," he said. "We need clearer guidance on what represents the best option."
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WHAT DO YOU THINK? Add your comment
Dave's Double Red Herring
David Williams probably knows little about monitoring PM2.5 particles from combustion processes, or the chaotic effects on the human body. Perhaps David Williams has heard of Gasplasma or Plasma Gasification that are coming through from companies like APP,Plasco or Europlasma; so talking up combustion/ incineration is a backward C20th position, is "the red and out of date herring". Biomass combustion is tolerable but inefficient 28% CHP via steam biolers; and incineration of mixed waste is totally unacceptable. Government experts promote AD as BAT for food waste. It should be remembered David makes money out of burning wooded pallets and alike; not an expert on AD like Dr Michael Chesshire who's technology has past the "cubic metre pig" sterilisation hurdle. Dave doesn't even give autoclaving a mention used also in medical sterilisation. Many of us say all technology is on the table other than incineration and poor gasification/pyrolsis.
Posted by Rob Whittle, 28 Jul 2008
What is the true value of burning biomass?
It is naive and foolish to think that it must always be best to burn biomass rather than fossil fuels for energy. Both produce greenhouse gases and the atmosphere does not distinguish between the sources. The value of burning biomass lies not in the burning but in the presumed certainty that a new crop will take up the greenhouse gases with an equal or greater rapidity as the combustion produces them. This requires an audit trail, and I suggest we need to be more thorough in our tracking of where the biomass fuels come from, rather than continue to use this simplistic approach that it is alwasy good to burn biomass. Burning biowaste in household waste incinerators is almost certainly a terrible mistake. Not only are incinerators abysmally inefficient at generating energy (much more CO2 per kWh than coal or oil), but it is very likely that much of the so-called renewable biomass or biowaste is cheap wood and paper, cut down in the Far East, never to be replaced. Incinerators merely perpetuate our unsustainable black bin bag culture. Biowaste needs to be separated, the nutrients put back into our depleted soils to the maximum extent, and the carbon sequestrated. At a time when it is clear that CO2 emissiosns from all sources have to be cut drastically, we must not fool ourselves into thinking we can get away with such unecessary emissions on the basis of the hunches and sloppy thinking that DEFRA seems to have been using up to now.
Posted by Neil Pitcairn, 28 Jul 2008