Effective removal of Cr(vi) from aqueous solution by biochar supported manganese sulfide.

ABSTRACT: In order to remove hexavalent chromium (Cr(vi)) efficiently and simplify the adsorbent preparation process, we employed a single step method to prepare a new biochar supported manganese sulfide material. The nanoscale MnS particles were highly soldered on the biochar support surface, and this adsorbent displayed the effective removal of Cr(vi) (98.15 mg L^-1) via synergistic effect between adsorption and reduction/precipitation under weak acid conditions (pH = 5.0-6.0). The adsorption kinetic data were described well by the pseudo second-order kinetic model, suggesting that the reaction process was a chemisorption process. The adsorption isotherm data were described well by the Redlich-Peterson model, further suggesting that this reaction was a hybrid chemical reaction-sor

SUBMITTER: Zhang S 

PROVIDER: S-EPMC9072298 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature