The preparation, characterization of FeC micro‐electrolysis materials using low‐cost biochar and the removal of ultra‐high COD pesticide wastewater

Abstract

Two kinds of FeAC micro-electrolysis materials (FeAC MEMs) named Fe 0 /FeAC MEMs and Fe 3 O 4 /FeAC MEMs were prepared using low-cost biochar, chemical grade Fe 0 powder and industrial iron powder. The FeAC MEMs were characterized by XRD, SEM and FT-IR. Meanwhile, the effects of sintering temperatures and mass ratios of Fe to C on the treatment high chemical oxygen demand (COD) pesticide wastewater were studied. The results display that the relative removal rate of COD reached 64% for Fe 0 /FeAC MEMs when the sintering temperature was 4008C and the mass ratio of Fe to C was 1 : 1. For Fe 3 O 4 /FeAC MEMs, and the mass ratio of Fe 3 O 4 to C was 1 : 3, the relative removal rate of COD reached 63.71%. Hence, the chemical grade Fe 0 powder could be replaced with industrial iron powder to achieve the goal of low-cost treatment of the high COD pesticide wastewater. Supporting InformationAdditional Supporting Information may be found in the online version of this article at the publisher's web-siteThe preparation, characterization of FeAC micro-electrolysis materials M. Li et al.