您好，欢迎访问中国农业科学院 机构知识库！

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Effective adsorptive removal of tetracycline from aqueous solution by Zn-BTC@SBC derived from sludge:Experimental study and density functional theory (DFT) calculations

文献类型： 外文期刊

作者： Deng, Zhikang 1 ; Zhu, Jinyao 1 ; Li, Ping 2 ; Du, Zhenjie 2 ; Qi, Xuebin 2 ; Chen, Xi 1 ; Mu, Rui 1 ; Zeng, Chenyu 1 ; Ma, Yongfei 1 ; Zhang, Zulin 1 ;

作者机构： 1.Wuhan Univ Technol, Sch Resources & Environm Engn, Hubei Key Lab Mineral Resources Proc & Environm, State Key Lab Silicate Mat Architectures, Wuhan 430070, Peoples R China

2.Chinese Acad Agr Sci, Farmland Irrigat Res Inst, China UK Water & Soil Resources Sustainable Utiliz, Xinxiang 453002, Peoples R China

3.James Hutton Inst, Craigiebuckler AB15 8QH, Aberdeen, Scotland

关键词： Zn-BTC@SBC; Tetracycline; Adsorption; Regeneration

期刊名称：JOURNAL OF MOLECULAR LIQUIDS （ 影响因子：6.0； 五年影响因子：5.6 ）

ISSN： 0167-7322

年卷期： 2023 年 384 卷

页码：

收录情况： SCI

摘要： Overuse of tetracycline (TC) has caused serious damage to aquatic environment. Developing sustainable and efficient removal technologies for TC is of great significance to eliminate its ecological risks. In this study, a novel zinc metal organic framework porous biochar composite (Zn-BTC@SBC) derived from sludge was the first time synthesized and employed for adsorptive removal of TC from water. The adsorption process of TC followed the Elovich and Temkin model and the maximum capacity of ZnBTC@SBC to adsorb TC was 125.9 mg/g. Characterization analysis demonstrated that the greater adsorption capacity of Zn-BTC@SBC was ascribed to its larger surface area, pore volume and abundant oxygen-containing functional groups. The fitting results showed that both chemisorption and physical adsorption predominated the adsorption process of TC on Zn-BTC@SBC. Further material characterization (FTIR and XPS) and density functional theory (DFT) calculations at the molecular level suggested that the good adsorption performance of ZnBTC@SBC on TC might be due to chemisorption dominated by oxygen-containing functional groups, which included 7C-7C conjugation, H-bonding and electrostatic interaction. And it was a spontaneous, endothermic and randomness increasing reaction. Both ion species/strength and solution pH significantly affected the adsorption capacity of Zn-BTC@SBC for TC. The natural water samples with complex composition (lake and river water) still showed 71.27-76.37 % of TC adsorbed. The used Zn-BTC@SBC was capable of maintaining its stable adsorption capacity by NaOH regeneration. This study demonstrated that Zn-BTC@SBC was a promising practicability in removal of TC and workable approach for sustainable utilization of sludge.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：中国农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台