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Isolation of LC-OCD-quantified biopolymers from surface water: Significant differences between real biopolymers and model biopolymers
Tominaga, Kanta; Nagai, Rina; Hafuka, Akira; Yu, Wenzheng; Kimura, Katsuki
2022-09-15
Source PublicationJOURNAL OF MEMBRANE SCIENCE
ISSN0376-7388
Volume658Issue:0Pages:120714
AbstractHigh molecular weight biopolymers quantified by a liquid chromatography with organic carbon detection (LCOCD) system have been recognized as major players in fouling that occurs in microfiltratrion (MF) and ultrafiltration (UF) of surface water. Although detailed investigation of biopolymers is important, there have been few studies in which real biopolymers isolated with sufficient purities and high recoveries were used. In this study, cross-flow UF using membranes with a molecular weight cut-off (MWCO) of 13,000 was performed to isolate biopolymers from surface water. Merely carrying out UF, however, did not result in a high purity of biopolymers in the isolated product: significant contamination by humics became a problem. Adjustments of electric conductivity and calcium concentration during UF were found to be effective. With the optimized conditions, humics could be eliminated almost completely and the isolated biopolymers were obtained with a high recovery rate (67-85%). Isolated biopolymers were compared with model biopolymers such as alginate. Fouling potentials and physical-chemical properties of the isolated biopolymers were considerably different from those of model compounds. The results obtained in this study give rise to an important question of whether common biopolymers such as alginate should be blindly used for fouling studies: they might not represent fouling caused by real biopolymers.
Department环境水质学国家重点实验室 ; 环境水质学国家重点实验室
KeywordLOW-PRESSURE MEMBRANES ORGANIC-MATTER HUMIC-ACID ULTRAFILTRATION MEMBRANES FOULING MECHANISMS UF MEMBRANES MICROFILTRATION SUBSTANCES ADSORPTION FLUORESCENCE
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/47708
Collection环境水质学国家重点实验室
Corresponding AuthorKimura, Katsuki
Affiliation1.Hokkaido Univ, Div Environm Engn, N13W8,Kita ku, Sapporo 0608628, Japan
2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China
Recommended Citation
GB/T 7714
Tominaga, Kanta,Nagai, Rina,Hafuka, Akira,et al. Isolation of LC-OCD-quantified biopolymers from surface water: Significant differences between real biopolymers and model biopolymers[J]. JOURNAL OF MEMBRANE SCIENCE,2022,658(0):120714.
APA Tominaga, Kanta,Nagai, Rina,Hafuka, Akira,Yu, Wenzheng,&Kimura, Katsuki.(2022).Isolation of LC-OCD-quantified biopolymers from surface water: Significant differences between real biopolymers and model biopolymers.JOURNAL OF MEMBRANE SCIENCE,658(0),120714.
MLA Tominaga, Kanta,et al."Isolation of LC-OCD-quantified biopolymers from surface water: Significant differences between real biopolymers and model biopolymers".JOURNAL OF MEMBRANE SCIENCE 658.0(2022):120714.
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