吸附
化学
石墨氮化碳
化学工程
等电点
朗缪尔吸附模型
动力学
碳纤维
聚合
材料科学
有机化学
聚合物
催化作用
复合数
复合材料
光催化
物理
工程类
量子力学
酶
作者
Haiyin Zhan,Yutong Wang,Xueyue Mi,Zhiruo Zhou,Pengfei Wang,Qixing Zhou
标识
DOI:10.1016/j.cclet.2020.08.015
摘要
There is a growing need to eliminate antibiotic resistance genes (ARGs) in the environment and mitigate widespread antibiotic resistance. Graphitic carbon nitride (g-C3N4) was successfully synthesized via facile thermal polymerization approach and its potential for adsorption treatment of ARGs in water was examined. Batch adsorption experimental results revealed that g-C3N4 powders had robust adsorption activity for the gene ampC and ermB. Adsorption kinetics and isotherms were systematically investigated to explain the adsorption mechanism. The apparent adsorption equilibrium could be reached within 180 min. The adsorption process effectively removed ARGs (ampC and ermB) from water with 3.2 log and 4.2 log reductions, respectively. In addition, experimental data were analyzed by several models and simulated well with Langmuir isotherm and pseudo-second-order model. It indicated that adsorption process might be dominated by the chemical rate-limiting step. Moreover, the effects of temperature and pH on the removal of ARGs were conducted and the isoelectric point (IEP) was obtained. Finally, we have demonstrated that the g-C3N4 is a novel adsorbent and can be used as column packing to remove ARGs by filtration.
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