Unexpected significance of magnesium ion in the coupling effect of mixed divalent cations on polysaccharide membrane fouling
文献类型： 外文期刊
作者： Meng, Shujuan 1 ; Wang, Rui 1 ; Yang, Linyan 2 ; Chen, Miao 3 ; Li, Qinfen 3 ; Zhang, Meng 4 ;
作者机构： 1.Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China
2.East China Univ Sci & Technol, Sch Resources & Environm Engn, Shanghai 200237, Peoples R China
3.Chinese Acad Trop Agr Sci, Environm & Plant Protect Inst, Haikou 571101, Peoples R China
4.Beihang Univ, Sch Elect & Informat Engn, Beijing 100191, Peoples R China
关键词： Coupling effect of cations; Calcium ion; Magnesium ion; Transparent exopolymer particles (TEP); Polysaccharides fouling
期刊名称：CHEMICAL ENGINEERING JOURNAL （ 影响因子：15.1； 五年影响因子：14.3 ）
ISSN： 1385-8947
年卷期： 2023 年 475 卷
页码：
收录情况： SCI
摘要： Divalent cations and organics are two main types of foulants in feed water to the membrane processes and cations often bind to organic foulants which significantly affects fouling. Extensive efforts have been devoted to exploring the influence of single cation on organic fouling while there are diverse cations in the feed. Thus, it is essential to understand the coupling influence of different divalent cations on fouling development. In this study, sodium alginate was chosen as a model foulant to investigate the effect of different Ca2+/Mg2+ ratios on its fouling behavior. Filtration performances, the quantity and morphology of transparent exopolymer particles (TEP) derived from alginate were analyzed along with the morphology and structure of corresponding fouling layers. TEP measurements reveal that the Ca2+/Mg2+ ratio is crucial in the characteristics of TEP, which further determines the structure of the fouling layer. At a low Ca2+/Mg2+ ratio, the TEP are amorphous-TEP (a-TEP) with small and unconsolidated structure which forms a fouling layer under pressure with high hydraulic resistance. In contrast, interactions between polysaccharides at high Ca2+/Mg2+ ratio are much stronger and result in large and tight particulate-TEP (p-TEP). Such p-TEP lead to a fouling layer with high porosity and low hydraulic resistance. The role of Mg2+ in polysaccharide fouling is more important than expected because it promotes the formation of a-TEP, which show a high fouling potential at high levels because more dense gel layer forms. This study suggests that the morphology and structure of TEP play crucial roles in polysaccharide fouling propensities. A-TEP at high levels needs more attention to ensure the successful operation of membrane systems in future work.
- 相关文献
作者其他论文 更多>>
-
Residual effects of chlorinated organic pollutants on microbial community and natural redox processes in coastal wetlands
作者：Liu, Meng;Su, Xin;Chen, Yuxuan;Huang, Xiaowei;Yang, Xueling;Zheng, Jinjin;Xu, Jianming;He, Yan;He, Yan;Yuan, Jing;Li, Qinfen
关键词：Chlorinated organic pollutants; Coastal wetland; Community assembly; Facultative organohalide-respiring bacteria; Natural redox processes
-
Enhanced mitigation of N2O and NO emissions through co-application of biochar with nitrapyrin in an intensive tropical vegetable field
作者：Fan, Changhua;Leng, Youfeng;Wang, Xiaotong;Wang, Junjiao;Fu, Yajun;Huang, Xiaomin;Gao, Wenlong;Zhang, Wen;Liu, Huiran;Ning, Ziyu;Li, Qinfen;Chen, Miao;Fan, Changhua;Gao, Wenlong;Zhang, Wen;Liu, Huiran;Ning, Ziyu;Li, Qinfen;Chen, Miao;Fan, Changhua;Gao, Wenlong;Zhang, Wen;Liu, Huiran;Ning, Ziyu;Li, Qinfen;Chen, Miao;Wang, Xiaotong;Fu, Yajun;Wang, Junjiao;Huang, Xiaomin;Fan, Changhua;Chen, Miao
关键词：Gaseous nitrogen (N) emission; Biochar; Nitrification inhibitor; Tropical vegetable ecosystem
-
Performance of Moringa Oil as an Effective Bioplasticizer on Static and Dynamic Mechanical Properties of Natural Rubber Vulcanizates
作者：Jarnthong, Methakarn;Li, Yongzhen;Yu, Heping;Wang, Rui;Wang, Yueqiong;Liu, Hongchao;Liao, Lusheng;Peng, Zheng;Lopattananon, Natinee;Peng, Zheng
关键词：Moringa oil; Natural rubber; Bioplasticizer; Static properties; Dynamic mechanical properties; Vulcanizates
-
Effects of polypropylene microplastics on carbon dioxide dynamics in intertidal mangrove sediments
作者：Lin, Xubing;Lin, Shuying;Peng, Licheng;Cheng, Xing;Xie, Shiyu;Bao, Ruiqi;Su, Yuanyuan;Mehmood, Tariq;Lin, Xubing;Lin, Shuying;Peng, Licheng;Cheng, Xing;Xie, Shiyu;Bao, Ruiqi;Su, Yuanyuan;Mehmood, Tariq;Chen, Miao
关键词：Microplastics; Micro -sized polypropylene (mPP); Mangrove intertidal zone; CO 2 emissions; Microbial compositions
-
Environmental damages, cumulative exergy demand, and economic assessment of Panus giganteus farming with the application of solar technology
作者：Cheng, Hanting;Zhou, Xiaohui;Yang, Yang;Xu, Lin;Ding, Ye;Yan, Tinglian;Li, Qinfen;Cheng, Hanting;Zhou, Xiaohui;Yang, Yang;Li, Qinfen;Xu, Lin;Ding, Ye;Li, Qinfen;Yan, Tinglian;Li, Qinfen
关键词：Life-cycle assessment; Cumulative exergy demand; Economic analysis; Mushroom; Photovoltaic
-
Deciphering the bioavailability of dissolved organic matter in thermophilic compost and vermicompost at the molecular level
作者：Wang, Dingmei;Mai, Liwen;Wang, Kongtan;Li, Qinfen;Lin, Jiacong;Wu, Dongming;Wang, Dingmei;Mai, Liwen;Wang, Kongtan;Li, Qinfen;Lin, Jiacong;Wu, Dongming;Meng, Ze;Wang, Xiongfei;Yu, Zhen;Wang, Kongtan;Wang, Dingmei;Mai, Liwen;Li, Qinfen;Lin, Jiacong;Wu, Dongming;Lin, Jiacong;Wu, Dongming
关键词：Compost; Dissolved organic matter; Bioavailability; Molecular composition; C/N ratio
-
Highly efficient and targeted adsorption of Congo Red in a novel cationic copper-organic framework with three-dimensional cages
作者：Wang, Yenan;Ye, Jianqiu;Yang, Dejie;Li, Qinfen;Wu, Dongming;Zou, Yukun;Ren, Dong;Zhao, Jun;Wang, Yenan;Ren, Dong;Ye, Jianqiu;Li, Qinfen;Yang, Dejie;Wu, Dongming;Zou, Yukun;Wu, Dongming;Zhao, Jun
关键词：Congo red; Copper-organic framework; Specific-selectivity adsorption; Density functional theory; Two-dimensional correlation spectroscopy (2D COS)
