您好，欢迎访问上海市农业科学院 机构知识库！
上海市农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Natural organic matter separation by forward osmosis: Performance and mechanisms

文献类型： 外文期刊

作者： Wang, Lin 1 ; Li, Tian 3 ; Chu, Huaqiang 3 ; Zhang, Wanzhu 4 ; Huang, Weiwei 5 ; Dong, Bingzhi 3 ; Wu, Daoji 1 ; Chen, Fe 1 ;

作者机构： 1.Shandong Jianzhu Univ, Sch Municipal & Environm Engn, Jinan 250101, Peoples R China

2.Shandong Jianzhu Univ, Resources & Environm Innovat Inst, Jinan 250101, Peoples R China

3.Tongji Univ, Sch Environm Sci & Engn, State Key Lab Pollut Control & Resource Reuse, Shanghai 200092, Peoples R China

4.Beijing Gen Municipal Engn Design & Res Inst Co L, Beijing 100082, Peoples R China

5.Shanghai Acad Agr Sci, Ecoenvironm Protect Res Inst, Shanghai 201403, Peoples R China

关键词： Forward osmosis; Surface water; Fouling; Internal concentration polarization; Interfacial energy

期刊名称：WATER RESEARCH （ 影响因子：11.236； 五年影响因子：11.547 ）

ISSN： 0043-1354

年卷期： 2021 年 191 卷

页码：

收录情况： SCI

摘要： The purification performance of a forward osmosis (FO) membrane on natural organic matter (NOM) contained in real surface water by was investigated systematically. FO could reject the natural dissolved organic matter (DOM) effectively with removal efficiencies of approximately 99.0%. When the natural water samples (e.g., raw surface water) had lower fouling tendencies, the active layer facing the draw solution (AL-facing-DS mode) provided a higher water flux than that in the alternative membrane orientation because the isoflux point occurred later in the process. It was found that the concentration of calcium ions had a more severe effect on decreasing the fouling flux of the FO membrane than that of the organic foulant. Furthermore, the concentrated feed solution had a more significant effect on the fouling flux decline of the natural DOM containing more small molecules than natural DOM containing more macromolecules. Additionally, the fouling that occurred in the AL-facing-DS orientation was compensated by the reduced internal concentration polarization (ICP) level based on the occurrence of the critical compensation point. It was also revealed that the permeation drag caused by the water flux and the chemical interactions induced by the feed solution pH and the calcium ion concentration played a significant role in the adsorption of small natural DOM molecules in the porous structure of the FO membrane. Based on the analysis of the interfacial free energies, the interactions between the natural DOM and the surface of the support layer dominated the initial fouling of the FO membrane, while subsequent fouling was controlled by the interaction between the approaching DOM molecules and the already adsorbed DOM. (C) 2021 Elsevier Ltd. All rights reserved.

  • 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：上海市农业科学院

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