期刊
ENVIRONMENTAL RESEARCH
卷 212, 期 -, 页码 -出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.envres.2022.113285
关键词
NOM interactions; NOM characteristics Variation; 2D-COS; Membrane pore properties; Membrane fouling mechanisms
资金
- National Natural Science Foundation of China [52100002, 51878047, 22076012]
- Fundamental Research Funds for the Central Universities [BLX201933]
- Major Science and Technology Program for Water Pollu-tion Control and Treatment [2017ZX07401001-03, 2017ZX07401004-03]
- Open Project of State Key Laboratory of Urban Water Resource and Environment [QA202014]
- Beijing Natural Science Foundation [L182027]
- National Key Research and Development Program of China [2021YFE0100800]
- Beijing Forestry University Outstanding Young Talent Cultivation Project [2019JQ03008]
- Beijing Municipal Education Commission through the Innovative Transdisciplinary Program Ecological Restoration Engineering [GJJXK210102]
- China Postdoctoral Science Foundation [2021M700448]
This study investigated the influence of interactions among different model natural organic matter (NOM) on ultrafiltration process. The results showed that these interactions not only changed the interception order of fluorescence fractions but also significantly affected the membrane fouling behavior.
The mechanisms governing interactions among various natural organic matter (NOM) fractions and the subsequently impact on ultrafiltration process have not been systematically studied. In this work, bovine serum albumin (BSA), humic acid (HA), sodium alginate (SA) were applied as model NOM to explore the influence of the interactions among NOM on ultrafiltration process. Results indicated that tryptophan-like fluorescence fraction was the dominant reaction fraction of HA to react with SA and BSA. Different interactions among model NOM not only changed the interception order of fluorescence fractions by ultrafiltration from fulvic acid-like, humic-like and tryptophan-like in BSA/HA mixture to tryptophan-like, humic-like and fulvic acid-like in BSA/HA/SA/kaolin mixture, but also remarkably influence the membrane fouling behavior. In BSA/HA mixture, new-generated aggregates with molecular weight (MW) of 10 kDa could not pass though ultrafiltration membrane and mainly contributed to chemical reversible fouling. In BSA/HA/SA mixture, SA simultaneously reacted with BSA and HA to generate aggregates with larger MW which could be washed down by physical cleaning. In BSA/HA/SA/kaolin mixture, the aggregates with MW of 10 kDa and chemical reversible fouling were disappeared due to the adsorption role of kaolin. These findings could further improve our understanding regarding membrane fouling mechanisms of raw water with different components.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据