响应曲面法优化菌渣活性炭吸附水中亚甲基蓝  

Response Surface Methodology for the Optimization of the Adsorption of Methylene Blue in Water by Activated Carbon of Bacterial Residue

作　　者：蒋仁杰 司艳晓 张文静 顼冰冰 李再兴[1] 安鸿雪 JIANG Ren-jie;SI Yan-xiao;ZHANG Wen-jing;XU Bing-bing;LI Zai-xing;AN Hong-xue(School of Environmental Science and Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,China;Institute of Ground Engineering,Petroleum Exploration and Development Research Institute,China Petroleum&Chemical Corporation,Beijing 102206,China;State Key Laboratory Breeding Base-Hebei Province Key Laboratory of Molecular Chemistry for Drug,Shijiazhuang 050018,China)

机构地区：[1]河北科技大学环境科学与工程学院,石家庄050018 [2]中国石油化工股份有限公司石油勘探开发研究院地面工程研究所,北京102206 [3]省部共建国家重点实验室培育基地-河北省药用分子化学实验室,石家庄050018

出　　处：《科学技术与工程》2023年第17期7468-7477,共10页Science Technology and Engineering

基　　金：河北省自然科学基金(E2020208054);中石化基础前瞻项目(JC-2020-KF008);中央高校基本科研业务费项目(FRF-TP-20-010A2)。

摘　　要：染色废水对环境具有巨大危害。利用青霉素菌渣为原料制备氮掺杂活性炭,研究其对水中亚甲基蓝的吸附机理,并用响应曲面法优化活性炭对水中亚甲基蓝的吸附机理。研究结果表明,所制备的活性炭孔隙结构发达,比表面积达到了1640.39 m^(2)/g,活性炭表面含羟基等官能团。亚甲基蓝吸附过程符合伪二级动力学模型和Langmuir等温吸附模型。建立的响应面模型合理可靠,最佳吸附条件为吸附时间138 min、吸附温度30℃、pH为8。在此条件下,活性炭对亚甲基蓝的吸附量达到了332.90 mg/g,与模型理论预测值335.76 mg/g基本吻合。Dyeing wastewater has great harm to the environment.The nitrogen-doped activated carbon was prepared by using penicillin slag as raw material,the adsorption mechanism of methylene blue in water was studied,and the adsorption mechanism of activated carbon on methylene blue in water was optimized by response surface method.The results show that the pore structure of the prepared activated carbon was well developed and the specific surface area reaches 1640.39 m^(2)/g.The surface of the activated carbon contains hydroxyl groups and other functional groups.The adsorption process of methylene blue conforms to the pseudo-second-order kinetic model and the Langmuir isotherm adsorption model.The established response surface model is reasonable and reliable,and the optimal adsorption conditions are the adsorption time of 138 min,the adsorption temperature of 30℃,and the pH of 8.Under these conditions,the adsorption capacity of activated carbon for methylene blue reaches 332.90 mg/g,which is basically consistent with the theoretical prediction value of the model of 335.76 mg/g.

关 键 词：活性炭 吸附 动力学 响应曲面法 亚甲基蓝 

分 类 号：TQ93[化学工程] X787[环境科学与工程—环境工程]