Versatile Strategy for the Preparation of Woody Biochar with Oxygen-Rich Groups and Enhanced Porosity for Highly Efficient Cr(VI) Removal
Hongping Dong, Lin Zhang, Lishu Shao, Zhiping Wu, Peng Zhan, Xiaoxun Zhou, Jienan Chen
Abstract
in maximum, which is significantly superior to that of unmodified counterparts and other reported biochars. Besides, the adsorption behaviors fit better with the Langmuir isotherm, the pseudo-second-order kinetic model, and the adsorption diffusion model in batch experiments. Based on the results, we put forward the conceivable adsorption mechanism that the synergistic contributions of the capillary force, electrostatic attraction, chemical complexation, and reduction action facilitate the Cr(VI) capture by ACDW.
Topics & Concepts
BiocharPorosityChemical engineeringOxygenMaterials scienceChemistryComposite materialOrganic chemistryPyrolysisEngineeringAdsorption and biosorption for pollutant removalGeochemistry and Elemental AnalysisChromium effects and bioremediation