School of Environment, Harbin Institute of Technology, P.O. Box 2602, Harbin 150090, China.
College of Resources and Environment, University of Chinese Academy of Sciences (UCAS), Beijing 100049, China.
Bioresour Technol. 2021 May;327:124818. doi: 10.1016/j.biortech.2021.124818. Epub 2021 Feb 5.
Magnetic porous biochars (MC, MC) with nanostructure on surfaces were prepared from penicillin fermentation dregs by pyrolysis with KFeO activation and used in penicillin adsorption. MC and MC had high BET surface areas of 672 and 735 m/g, respectively; mainly be attributed to the activation of KFeO as well as acid pickling. Saturation magnetizations of MC and MC were 75.29 and 42.45 emu/g, respectively; the magnetism was mainly derived from the FeO and FeC in magnetic biochars. MC had nano sticks of ~ 80 nm and MC had petal-like slice of ~ 30 nm on surfaces. The maximum adsorption capacities of penicillin on MC and MC were 196 and 322 mg/g at 308 K, respectively. The adsorptions of penicillin on MC and MC were consistent with pseudo primary kinetics and the Langmuir adsorption isotherm model, and thermodynamic analysis indicated that the adsorption mechanism included physical and chemical adsorption.
磁性多孔生物炭（MC、MC）由青霉素发酵渣经 KFeO 热解制备而成，表面具有纳米结构，用于青霉素吸附。MC 和 MC 的 BET 比表面积分别高达 672 和 735 m²/g，主要归因于 KFeO 的活化和酸浸提。MC 和 MC 的饱和磁化强度分别为 75.29 和 42.45 emu/g，磁性主要来源于磁性生物炭中的 FeO 和 FeC。MC 的表面具有约 80nm 的纳米棒，MC 的表面具有约 30nm 的花瓣状薄片。在 308 K 下，MC 和 MC 对青霉素的最大吸附容量分别为 196 和 322 mg/g。青霉素在 MC 和 MC 上的吸附符合准一级动力学和 Langmuir 吸附等温线模型，热力学分析表明吸附机制包括物理吸附和化学吸附。
