FeS-biochar and Zn(0)-biochar for remediation of redox-reactive contaminants.

ABSTRACT: To enhance the removal of redox-reactive contaminants, biochars including FeS and Zn(0) were developed via pyrolysis. These biochars significantly promoted the removal of 2,4-dichlorophenol (DCP) by means of sorption and reduction. Compared to direct reduction with FeS and Zn(0), the formation of reduction intermediates and product was enhanced from 21% and 22% of initial DCP concentration to 41% and 52%, respectively. 2,4-Dinitrotoluene (DNT), chromate (CrO₄ ^2-) and selenate (SeO₄ ^2-) were also reductively transformed to reduction products (e.g., 2,4-diaminotoluene [DAT], Cr³⁺, and selenite [SeO₃ ^2-]) after they sorbed onto the biochars including FeS and Zn(0). Mass recovery as DAT, Cr³⁺

SUBMITTER: Seo YD 

PROVIDER: S-EPMC9056297 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature