Abstract

Hexavalent chromium in the water environment is highly toxic and can be enriched through the biological chain, which needs proper management. Bioleaching was used as a biochar modification method to prepare nanoscale iron-modified biochar for the removal of hexavalent chromium from the aqueous environment. The experimental results showed that bioleaching followed by pyrolysis process, the nanoscale iron was successfully loaded onto the biochar and the removal of hexavalent chromium could reach by 93.99% for 100mg/L Cr(VI).

Keywords: Bioleaching; Biochar; Cr(VI); Nano trioxide

Abbreviations:Cr: Chromium; BC: Biochar; ORP: Oxidation Reduction Potential; PMFeBC: Produce Modified Iron-Loaded Biochar; SEM: Scanning Electron Microscopy, XRD: X-ray Diffractometers