New ecological process for producing cheaper biofuel

Professors Rajeshwar Dayal Tyagi and Patrick Drogui, researchers at the Institut National de la Recherche Scientifique (INRS), have developed a new approach to biodiesel production that uses microbes, sewage sludge, and a ...

Fertilizer sourced from sewage sludge

Germany's new Waste and Sewage Sludge Ordinance requires large sewage treatment plants to recover phosphates from sewage sludge or ashes as of 2032. Conventional recovery technologies are costly and chemical-laden. A new ...

Turning (more) fat and sewage into natural gas

North Carolina State University researchers have developed what is, to date, the most efficient means of converting sewage sludge and restaurant grease into methane.

Concerns grow over tainted sewage sludge spread on croplands

For more than 20 years, the eastern Michigan town of Lapeer sent leftover sludge from its sewage treatment plant to area farms, supplying them with high-quality, free fertilizer while avoiding the expense of disposal elsewhere.

Sewage sludge down on the farm

The phrase "sewage farm" may have fallen from favour and been replaced with terms such as waste water treatment works and the like. But, the origin of that archaic phrase refers very directly to the fact that partly processed ...

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