Single-component and competitive adsorption of tetracycline and Zn(ii) on an NH₄Cl-induced magnetic ultra-fine buckwheat peel powder biochar from water: studies on the kinetics, isotherms, and mechanism.

ABSTRACT: Single-component and competitive adsorption of tetracycline (TC) and Zn(ii) on an NH₄Cl-induced magnetic ultra-fine buckwheat peel powder biochar (NH₄Cl-BHP-char/Fe₃O₄) was investigated in batch experiments. NH₄Cl-BHP-char/Fe₃O₄ exhibited a large surface area of 1119.097 m² g^-1 and a total pore volume of 0.139 cm³ g^-1 and was easily separated from aqueous solution using a magnet. Also, adsorption was endothermic, spontaneous, and highly pH-dependent. The optimum pH of the single-component adsorption of TC and Zn(ii) was 4.0 and 6.5, respectively, and the optimum pH of co-adsorption was 6.0. The kinetics studies showed the prepared biochar could be rapidly adsorbed within

SUBMITTER: Ai T 

PROVIDER: S-EPMC9054231 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature