This review showcases a comprehensive analysis of studies that highlight the different
conversion procedures attempted across the globe. The resources of biogas production …

The use of wastewater sludge as a source for energy and resource recovery is a good
alternative for its management considering the legislation requirements and the circular …

Sewage sludge is rich source of carbon, nutrients, and trace elements and can be subjected
to proper treatment before disposal to fulfill government legislation and protect receiving …

This review presents the state-of-the-art sludge reduction technologies applied in both
wastewater and sludge treatment lines. They include chemical, mechanical, thermal …

In recent years, increasing attention has been paid to the problem of sewage sludge
management and the relevant energy consumption, which represent the main cost items in …

Currently, sludge is not considered as a waste any more, since it is capable of producing
valuable products. Besides land disposal and thermochemical processes (ie pyrolysis …

Pre-treatments for waste activated sludge (WAS) are, in most cases, an attempt to increase
the biodegradation and/or improve hydrolysis rate of WAS after anaerobic digestion. This …

During wastewater treatment, most organic matter is transferred to a solid phase commonly
known as sludge or biosolids. The high cost of sludge management and the growing interest …

Various organic and inorganic hazardous substances are commonly originated during the
processing of virgin or recovered fibers (RCFs), when the pulp and paper (P&P) are …

Ammonia inhibition easily affects the performance of anaerobic digestion (AD) for municipal
sludge and the oxidization of volatile fatty acids (VFAs) is the rate-limiting step of this …