A pilot study of a new method for treating sewage sludge from a wastewater treatment plant efficiently created renewable natural gas while reducing the cost of the treatment. The work, reported in the ...

The researchers additionally report that the pretreatment stage reduced sludge treatment costs from $494 to $253 per dry ton by significantly lowering the volume of leftover biosolids requiring ...

Scientists have developed an innovative solar-powered method to transform sewage sludge -- a by-product of wastewater treatment -- into green hydrogen for clean energy and single-cell protein for ...

What is Refinery Oil Sludge, Why is it Toxic, and How is it Disposed Of? Vast amounts of refinery oil sludge are produced from the process of crude oil refining. Refinery oil sludge contains toxic ...

Farmland is everywhere in tiny Unity Township, from neat fields of corn to open cattle pastures. And so are layers of wet organic sludge, a onetime fertilizer that has triggered a crisis over “forever ...