Relative distribution of Cd2+ adsorption mechanisms on biochars derived from rice straw and sewage sludge

• Published in: Bioresource technology Vol. 272; no. C; pp. 114 - 122
• Main Authors: Gao, Li-Yang, Deng, Jin-Huan, Huang, Guo-Fu, Li, Kai, Cai, Kun-Zheng, Liu, Yan, Huang, Fei
• Format: Journal Article
• Language: English
• Published: United Kingdom Elsevier Ltd 01.01.2019; Elsevier
• Subjects: adsorption; Adsorption characteristics; Adsorption mechanisms; aqueous solutions; Biochar; cadmium; cation exchange; electrons; energy-dispersive X-ray analysis; Fourier transform infrared spectroscopy; Heavy metal; rice straw; scanning electron microscopy; sewage sludge; temperature; titration; X-ray diffraction; Biochar; Adsorption characteristics; Adsorption mechanisms; Heavy metal

[Display omitted] •The adsorption on RSBs out-performed SSBs.•The contribution of each mechanism to total adsorption varied with feedstock.•Precipitation and cation exchange mechanism dominated Cd2+ adsorption on RSBs.•Coordination with π electrons was always predominant mechanism in SSBs. Qualitati...