Sludge pyrolysis is a promising method for treating excess sludge as by-product of municipal sewage plants, allowing energy self-sufficiency and resource recovery. Before begins, few conditioning agents are added to the that promote dewatering. Potassium ferrate (K2FeO4) applied agent with both cracking flocculation effects, but effects K2FeO4 on release characteristics nitrogen, sulfur, chlori...

Black liquor, the residue remaining from pulping wood chips for papermaking, is used as fuel to power mill. For energy efficiency, black liquor must be concentrated over 65% solids prior combustion. Supercritical CO2 achieves this by precipitating lignin dropping pH below pKa of phenolic groups in lignin, thereby depositing and creating a porous liquid/solid matrix. It then displaces water matr...

The Millennium Tower is a 58-story reinforced concrete building that was constructed in San Francisco, California, between 2005 and 2009. founded on an embedded pile-supported mat with pile tips bearing dense marine deposits overlie overconsolidated clay layer known locally as Old Bay clay. This experienced stress increases from self-weight multiple episodes of dewatering 2006 2018 at the site ...

Biopolymers are considered a potential alternative to conventional chemical polymers because of their ease of biodegradability, high efficiency, non-toxicity and non-secondary pollution. Recently, extracellular polymeric substances (EPS, biopolymers produced by the microorganisms) have been recognised by many researchers as a potential flocculent for their applications in various water, wastewa...