The underlying mechanism in gel formation and its mathematical simulation during anionic polyacrylamide solution ultrafiltration process

被引：2
作者：
Yi, Xuesong [1 ]
Li, Jiahui [1 ]
Wang, Dexin [1 ]
Wang, Yong [2 ]
Wang, Shuo [3 ]
Yang, Fei [1 ]
机构：
[1] Hainan Univ, Sch Environm Sci & Engn, Haikou 570028, Hainan, Peoples R China
[2] Minist Nat Resources PR China, State Key Lab Breeding Base Marine Genet Resource, Fujian Key Lab Marine Genet Resources, Key Lab Marine Genet Resources,Inst Oceanog 3, Xiamen 361005, Peoples R China
[3] Univ Calgary, Schulich Sch Engn, Dept Civil Engn, Calgary, AB T2N 1N4, Canada
来源：
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH | 2020年 / 27卷 / 21期
基金：
中国国家自然科学基金;
关键词：
Membrane fouling; Gel formation; Mathematical simulation; Anionic polyacrylamide; WASTE-WATER; MEMBRANE BIOREACTOR; FLUX DECLINE; UF MEMBRANE; LAYER; MODEL; TRANSPORT; REMOVAL; PROTEIN; OPTIMIZATION;
D O I：
10.1007/s11356-020-09084-6
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A dead-end ultrafiltration cup was continuously operated to investigate the underlying mechanisms of membrane fouling caused by gel layer in this paper. Anionic polyacrylamide was used as a model foulant for gel formation process in various ultrafiltration processes by two kinds of ultrafiltration membrane, e.g., polyvinylidene fluoride (PVDF) membrane (OM) and TiO2/Al2O3-PVDF membrane (MM); then, a gel formation model was established and systematically assessed. The results show that the gel formation process in ultrafiltration can be divided into three stages: "slow-rapid-slow" flux decay curve. The R-2 value of the simulation curve was still higher than 0.90 for both OM and MM. Based on the current cognition, the proposed gel layer formation mechanism and mathematical model were feasible.
引用
收藏
页码：27124 / 27134
页数：11
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