Conversion of sewage sludge into environmental catalyst and microbial fuel cell electrode material: A review

The Science of the Total Environment
Md Manik MianBiao Fu

Abstract

At present, environmentally friendly and cost-effective disposal of sewage sludge (SS) is the major challenge of wastewater treatment that prompted the concept of sludge valorization. A recent technology, SS conversion into biochar as an efficient catalyst for environmental application, shows great promise to sludge valorization. This review presents the literature and advances of sludge biochar-based catalysts (SBCs), including their synthesis route, physiochemical characteristics, catalytic applications, reaction mechanisms, chemical stability, feasibility, and future aspects. Two major applications of SBCs such as organic pollutants degradation and employing as an electrode material in a microbial fuel cell (MFC) were summarized. The literature has indicated that carbonization of raw or organic/ inorganic-laden sludge produces various metal phase structure and surface functional groups which perform various catalytic reaction such as Fenton-like reaction, ozonation, H2O2/ persulfate activation, and photoreaction in the organic pollutants degradation tests. The degradation efficiency and chemical stability of SBCs have found very satisfying. Moreover, catalysts are highly recyclable, separable, and ensure negligible metal lea...Continue Reading

Citations

Feb 7, 2020·Environmental Science and Pollution Research International·Junli WanChunbo He
Jul 16, 2020·Water Environment Research : a Research Publication of the Water Environment Federation·Kari B BrisolaraJohn Bourgeois
Aug 20, 2020·The Science of the Total Environment·A G OlabiMohammad Ali Abdelkareem

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