Abstract:To
further reduce the toxicity of heavy metals (HMs) in sewage
sludge (SS), organic acid (oxalic acid, citric acid, acetic acid)
washing was used before co-hydrothermal carbonization (co-HTC) with
pinewood. The results showed the total concentrations of six HMs (As,
Cu, Ni, Cr, Mn, and Zn) in hydrochar produced at 230 °C decreased
obviously during co-HTC. More importantly, F1 + F2 fractions of Ni,
Cr, Mn, and Zn were also lowered. With the pretreatment of citric
acid, the hydrochar from co-HTC exhibited the lo… Show more
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.