生物炭
吸附
化学
碳化
原材料
化学工程
四环素
激活剂(遗传学)
核化学
动力学
色谱法
有机化学
生物化学
热解
工程类
物理
基因
抗生素
量子力学
作者
Haixiang Yu,Lin Gu,Lu Chen,Haifeng Wen,Daofang Zhang,Hong Tao
标识
DOI:10.1016/j.biortech.2020.123971
摘要
A novel adsorbent derived from grapefruit peel (GP) based biochar (GPBC) was synthesized by combined carbonization of GP and subsequent activation by GP extracts. Compared to biochar without extracts activation, the technique granted GPBC-20 (with 1:20 of solid-solution ratio) more abundant surface functional groups, which exerts the adsorbent superior performance for tetracycline (TC) adsorption (37.92 mg/g v.s. 16.64 mg/g). The adsorption kinetics, isotherms and thermodynamics models were further used to evaluate the adsorption behavior of GPBC. The enhanced adsorption was analyzed by characterization of fresh and used GPBC, revealing that the adsorption mechanism was comprised of pore filling, charge interaction and chemical bonding. The comprehensive investigation of using agricultural waste extracts as activator to prepare its raw materials-based adsorbents may be of great significance for enhanced resource utilization.
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