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Mechanism analysis of nanofiltration membrane fouling behavior by mixed BSA-HA using AFM with modified polyamide-probe
Gao, Fang1,2,3; Sheng, Yuxing1,2; Li, Yuping1,2; Cao, Hongbin1,2; Su, Chunlei1,2,4
2017
Source PublicationDESALINATION AND WATER TREATMENT
ISSN1944-3994
Volume59Pages:55-64
AbstractIn this work, fouling mechanisms of mixed foulants, that is, bovine serum albumin (BSA) and humic acid (HA), on nanofiltration (NF) under different factors, including pH, ionic strength, and Ca2+, were investigated by using atomic force microscopy (AFM). Considering that fouling behavior mainly appeared at the polyamide (PA) separation layer of NF membrane, AFM probes modified with PA which was the dominating material of effective separation layer, and coating [BSA-HA](n) were -prepared. Fouling mechanisms of mixed foulants on the NF membrane were studied through -measurements of the interfacial forces of [BSA-HA](n)-PA membrane and [BSA-HA](n)-[BSA-HA](n). Fouling experiments with [BSA-HA](n) were carried out using PA membrane, and the results indicated severe flux reduction occurring at low pH, thereby decreasing the ionic strength or adding Ca2+. The fouling behavior of NF membrane was determined by the interfacial forces (F/R) of [BSA-HA](n)-PA and [BSA-HA](n)-[BSA-HA](n), thus both forces were measured. Results showed that the forces of [BSA-HA](n)-PA membrane were stronger than those of [BSA-HA](n)-[BSA-HA](n). Moreover, both forces were enhanced with low pH, ionic strength and added Ca2+. Results verified that the F/R of [BSA-HA](n)-PA membrane determined the cake formation occurrence time, and F/R of [BSA-HA](n)-[BSA-HA](n) maintained a linear correlation with fouling degree.
KeywordNanofiltraion Polyamide Membrane Fouling Mechanism Modified Pa Probe Mixed Foulants
SubtypeArticle
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
DOI10.5004/dwt.2017.0353
Indexed BySCI
Language英语
WOS KeywordREVERSE-OSMOSIS MEMBRANES ; ATOMIC-FORCE MICROSCOPY ; NATURAL ORGANIC-MATTER ; HUMIC-ACID ; ULTRAFILTRATION MEMBRANES ; PHYSICAL ASPECTS ; IONIC-STRENGTH ; SURFACE-WATER ; PROTEIN ; PH
WOS Research AreaEngineering ; Water Resources
WOS SubjectEngineering, Chemical ; Water Resources
WOS IDWOS:000403563700006
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/22722
Collection湿法冶金清洁生产技术国家工程实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Natl Key Lab Biochem Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100190, Peoples R China
4.Univ Xiangtan, Xiangtan 411105, Peoples R China
Recommended Citation
GB/T 7714
Gao, Fang,Sheng, Yuxing,Li, Yuping,et al. Mechanism analysis of nanofiltration membrane fouling behavior by mixed BSA-HA using AFM with modified polyamide-probe[J]. DESALINATION AND WATER TREATMENT,2017,59:55-64.
APA Gao, Fang,Sheng, Yuxing,Li, Yuping,Cao, Hongbin,&Su, Chunlei.(2017).Mechanism analysis of nanofiltration membrane fouling behavior by mixed BSA-HA using AFM with modified polyamide-probe.DESALINATION AND WATER TREATMENT,59,55-64.
MLA Gao, Fang,et al."Mechanism analysis of nanofiltration membrane fouling behavior by mixed BSA-HA using AFM with modified polyamide-probe".DESALINATION AND WATER TREATMENT 59(2017):55-64.
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