Arsenic(<scp>iii</scp>) removal from aqueous solution using TiO<sub>2</sub>-loaded biochar prepared by waste Chinese traditional medicine dregs
Yan Yang, Ruixue Zhang, Shiwan Chen, Zhu Jian, Pan Wu, Jia-Yan Huang, Shihua Qi
Abstract
dominated the oxidation of As(iii). The oxidation of As(iii) obviously affected the adsorption capacity for As(iii) by TBC. X-ray photoelectron spectroscopy (XPS) studies showed that As(iii) and As(v) existed on the surface of TBC, suggesting that the oxidation of As(iii) occurred. TBC played multiple roles for As(iii), including direct adsorption and photocatalytic oxidation adsorption. Regeneration and stability experiments showed that TBC was an environment-friendly and efficient adsorbent for As(iii) removal.
Topics & Concepts
BiocharAqueous solutionEnvironmental remediationArsenicNuclear chemistryChemistryWaste managementContaminationOrganic chemistryPyrolysisEngineeringEcologyBiologyArsenic contamination and mitigationHeavy metals in environmentAdsorption and biosorption for pollutant removal