In the field of environmental engineering, (published in Water Research , 2021) is a significant study titled "Underestimated humic acids release and influence on anaerobic digestion during sludge thermal hydrolysis" .

: The research demonstrated that the release of humic acids during this process is often underestimated. These acids can inhibit the microorganisms responsible for producing biogas (methane), thereby reducing the efficiency of energy recovery from waste.

1. Environmental Science: Anaerobic Digestion and Humic Acids