A company is processing wood chips into biochar for use as a soil amendment. Now, it wants to do the same with sewage solids.

Bellingham officials are looking for a more ecologically sound way to get rid of the “biosolid” sludge that’s a by-product of the sewage-treatment process as they move forward with a $220 million ...

The sludge is initially treated with an acid, causing it to produce soluble calcium. The urea is then added to that calcium, forming what is known as a cementation solution. Special bacteria are ...

UTICA — About 45 minutes southwest of Jackson, sits the small, sleepy town of Utica. With just under 800 residents according to the 2021 census, it falls on the edge of Hinds County, near the Copiah ...

A new method for treating sewage sludge efficiently created renewable natural gas while slashing in half the cost of the ...

Municipal sludge, a rapidly growing by-product of wastewater treatment, has considerable energy potential but remains challenging as a biofuel feedstock due to its high nitrogen content, which ...