Converting Spent Cu/Fe Layered Double Hydroxide into Cr(VI) Reductant and Porous Carbon Material.

ABSTRACT: Recycling solid waste as functional materials is important for both environmental remediation and resource recycling. This study attempts to recycle spent Cu/Fe layered double hydroxide (Cu/Fe-LDH) which is generated from the adsorption of dyes by converting to Cr(VI) reductant and porous carbon material. Results showed that the obtained reductant was mainly composed of Fe⁰ and Cu⁰, and exhibited good reductive activity toward Cr(VI). The species of Fe⁰, Fe²⁺, Cu⁰, and Cu⁺ all favored the reduction of Cr(VI) according to X-ray photoelectron spectroscopy analysis. During Cr(VI) removal, solution pH could increase to neutral which caused the metal ions to precipitate near completion. On the other hand, the spent Cu/Fe-LDH coul

SUBMITTER: Laipan M 

PROVIDER: S-EPMC5544766 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature