Study on the degradation of accumulated bisphenol S and regeneration of magnetic sludge-derived biochar upon microwave irritation in the presence of hydrogen peroxide for application in integrated process. (December 2019)

• Record Type: Journal Article
• Authors: Lv, Ying; Zhang, Jingyi; Asgodom, Michael Engda; Liu, Dingyi; Xie, Huifang; Qu, Hongxia
• Is Part Of: Bioresource technology. Volume 293(2019)
• Publication Date: 2019-12
• Subjects: Magnetic biochar -- Waste activated sludge -- Bisphenol S -- Microwave; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2019.122072
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: Magnetic sludge-derived biochar offer the feasibility of an integrated process. Ethanol-water system decouples the adsorption and degradation. ·OH and h + are the main active radicals involved in reactions. Degradation and regeneration can be obtained in MW + H2 O2 under certain conditions. Abstract: Based on the multi-functional magnetic sludge-derived biochar (MSBC), an innovative integrated process–coupling accumulation by adsorbing, degradation by microwave (MW)-induced catalytic oxidation in the presence of H2 O2 and the regeneration of adsorbent simultaneously, was proposed. In this study, bisphenol S (4, 4′-sulfonyldiphenol) was chosen as the pollutant model, its behaviors and related mechanism of BPS and MSBC in MW + H2 O2 system were investigated. The BPS effective degradation on MSBC was proved by decoupling the adsorption and degradation with solvent extraction. OH and h + play vital roles based on the scavenger tests. The synergistic effects of hot-spot of microwave irradiation, activation of H2 O2, and charge transfer-induced doping effects of MSBC were attributed to the reactions. This work proves the feasibility in economics and energy-save treatment approach for low concentration organic pollutants in water.