期刊
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
卷 11, 期 6, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jece.2023.111105
关键词
CS@BSBC; Vanadium(V); Sulfamethoxazole; Simultaneous removal; Multilayer adsorption
A cross-linked chitosan-modified birch sawdust biochar was prepared and applied for the simultaneous removal of vanadium and sulfamethoxazole from livestock wastewater. The adsorption capacity reached 150 mg/g for the simultaneous removal of both contaminants. The optimal pH for adsorption was found to be 3.
A cross-linked chitosan-modified birch sawdust biochar (CS@BSBC) was prepared and applied for the simultaneous elimination of vanadium (V) and sulfamethoxazole (SMX) from livestock wastewater. The adsorption capacity of V(V) reached 110 mg/g alone while this value was promoted to 150 mg/g for the simultaneous removal of SMX and V(V), and the adsorption effect is optimal at pH 3. The adsorption capacity of SMX reached about 30 mg/g alone, while the SMX's adsorption capacity droped to 25 mg/g for the simultaneous removal of SMX and V(V). The mechanism studies disclosed that redox reactions occur on the surface of CS@BSBC. As revealed by the XPS spectra, 63 % of V(V) was reduced to V(IV) concurrently pyrolic nitrogen and C-O terminals were oxidized to nitrogen oxide and C--O. The treatment mechanism of CS@BSBC described above can provide a reference for the subsequent treatment of livestock wastewater with complex composition and high vanadium content.
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