Removal of Cr(vi) and p-chlorophenol and generation of electricity using constructed wetland-microbial fuel cells based on Leersia hexandra Swartz: p-chlorophenol concentration and hydraulic retention time effects.

ABSTRACT: Heavy metals and phenolic compounds existing in polluted wastewater are a threat to the environment and human safety. A downflow Leersia hexandra Swartz constructed wetland-microbial fuel cell (DLCW-MFC) was designed to treat polluted wastewater containing Cr(vi) and p-chlorophenol (4-CP). To determine the effect of 4-CP concentration and hydraulic retention time (HRT) on the performance of the DLCW-MFC system, the wastewater purification, electricity generation, electrochemical performance, and L. hexandra growth status were studied. Addition of 17.9 mg L^-1 4-CP improved the power density (72.04 mW m^-2) and the charge transfer capacity (exchange current, 4.72 × 10^-3 A) of DLCW-MFC. The removal rates of Cr(vi) and 4-CP at a 4-CP concent

SUBMITTER: Wang Y 

PROVIDER: S-EPMC9112668 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature