Stimuli-Responsive Hybrid Polymer for Enhanced Solid-Liquid Separation of Industrial Effluents

Ng, Jason1; Osborn, Ian1; Harbottle, David2; Liu, Qingxia1; Masliyah, Jacob H.1; Xu, Zhenghe1,3

2019-06-04

10.1021/acs.est.8b07074

ENVIRONMENTAL SCIENCE & TECHNOLOGY   影响因子和分区

0013-936X

1520-5851

In the current study, a novel stimuli-responsive hybrid polymer with aluminum hydroxide colloids incorporated into a cationic copolymer of N-isopropylacrylamide and N-[3-(dimethylamino)propyl]methacrylamide was synthesized to enhance the settling and filtration performance of fine clay suspensions. The conformation of the synthesized hybrid copolymer was shown to respond to changes in both temperature and pH. Compared with a cationic copolymer of similar structure without aluminum hydroxide colloids, settling and filtration rates were significantly enhanced using the hybrid copolymer, which is attributed to the synergy between the inorganic aluminum hydroxide cores and organic copolymer. While the ideal treatment protocol for the hybrid polymer involved the addition of the polymer at room temperature, followed by heating to 45 degrees C for enhanced settling and dewatering, the synergistic effect between colloidal cores and polymer also allowed the hybrid polymer to perform well when added at temperatures above the LCST, demonstrating the robustness of the hybrid polymer to the process environment. The ideal treatment protocol resulted in an optimal adsorption of polymer on clays before inducing a coil-globule transition to form large and dense flocs, resulting in a more porous filter cake.

SCI ; EI

英语

NI期刊 ; NI期刊 ; NI论文

通讯

Engineering ; Environmental Sciences & Ecology

Engineering, Environmental ; Environmental Sciences

WOS:000470793900034

AMER CHEMICAL SOC

20192407020596

Acrylic monomers ; Aluminum hydroxide ; Amides ; Dewatering ; Effluents ; Functional polymers ; Sewage ; Sols ; Suspensions (fluids)

Sewage:452.1 ; Industrial Wastes:452.3 ; Chemical Operations:802.3 ; Chemical Products Generally:804 ; Organic Compounds:804.1 ; Polymeric Materials:815.1

ENVIRONMENT/ECOLOGY

Web of Science

1.Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 1H9, Canada
2.Univ Leeds, Sch Chem & Proc Engn, Leeds LS2 9JT, W Yorkshire, England
3.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China

Ng, Jason,Osborn, Ian,Harbottle, David,et al. Stimuli-Responsive Hybrid Polymer for Enhanced Solid-Liquid Separation of Industrial Effluents[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2019,53(11):6436-6443.

Ng, Jason,Osborn, Ian,Harbottle, David,Liu, Qingxia,Masliyah, Jacob H.,&Xu, Zhenghe.(2019).Stimuli-Responsive Hybrid Polymer for Enhanced Solid-Liquid Separation of Industrial Effluents.ENVIRONMENTAL SCIENCE & TECHNOLOGY,53(11),6436-6443.

Ng, Jason,et al."Stimuli-Responsive Hybrid Polymer for Enhanced Solid-Liquid Separation of Industrial Effluents".ENVIRONMENTAL SCIENCE & TECHNOLOGY 53.11(2019):6436-6443.