Cellulose-based thermosensitive supramolecular hydrogel for phenol removal from polluted water

被引：16

作者：

Guo, Ming ^{[1
]}

Wang, Jue ^{[1
]}

Zhang, Cheng ^{[2
]}

Zhang, Xinyu ^{[1
]}

Xia, Changlei ^{[3
]}

Lin, Hongfei ^{[4
]}

Lin, Chin Yik ^{[5
]}

Lam, Su Shiung ^{[3
,6
,7
]}

机构：

[1] Zhejiang Agr & Forestry Univ, Coll Chem & Mat Engn, Hangzhou 311300, Peoples R China

[2] Zhejiang Agr & Forestry Univ, Coll Environm & Resource Sci, Hangzhou 311300, Peoples R China

[3] Nanjing Forestry Univ, Coll Mat Sci & Engn, Jiangsu Co Innovat Ctr Efficient Proc & Utilizat F, Int Innovat Ctr Forest Chem & Mat, Nanjing 210037, Jiangsu, Peoples R China

[4] Washington State Univ, Gene & Linda Voiland Sch Chem Engn & Bioengn, Pullman, WA 99164 USA

[5] Univ Malaya, Fac Sci, Dept Geol, Kuala Lumpur 50603, Malaysia

[6] Univ Malaysia Terengganu, Higher Inst Ctr Excellence HICoE, Inst Trop Aquaculture & Fisheries AKUATROP, Terengganu 21030, Malaysia

[7] Univ Petr & Energy Studies, Sch Engn, Sustainabil Cluster, Dehra Dun 248007, Uttarakhand, India

来源：

ENVIRONMENTAL RESEARCH | 2022年 / 214卷

关键词：

Supramolecular hydrogel; Lignocellulosic material; Toxic phenol; Adsorption performance; Water treatment; BETA-CYCLODEXTRIN; ACTIVATED CARBON; ADSORPTION; ADSORBENTS; ENCAPSULATION; MECHANISM; POLYMERS; ISOTHERM; KINETICS;

D O I：

10.1016/j.envres.2022.113863

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Pollution of phenolic effluent from spice and plastics factories has become increasingly serious. Thus, developing a green and highly efficient adsorbent to remove phenolic compounds from wastewater is of urgent need. In this study, cellulose graft copolymer was synthesized through grafting 4-vinylpyridine monomer and polyethylene glycol methacrylate to a molecular skeleton of cellulose by free radical polymerization. The supramolecular hydrogel was successfully synthesized by physical cross-linking of cellulose graft copolymer and alpha-cyclodextrin. These supramolecular hydrogels were thoroughly characterized and the adsorption performance (adsorption isotherms and adsorption kinetics) of phenol on the supramolecular hydrogel were investigated in batch operation. The supramolecular hydrogel not only exhibited excellent adsorption of phenol, but also demonstrated increased mechanical strength due to the introduction of a modified cellulose base material. The adsorption kinetics of phenol on the supramolecular hydrogel followed a quasi-second-order reaction, with a correlation coefficient of 0.9909. The adsorption isotherm conformed to the Langmuir adsorption isotherm, and the maximum adsorption capacity of phenol can reach 80.71 mg g(-1), which was 2-3 times higher than traditional carbon-based materials. The results demonstrate the great promise of the waste-derived supramolecular hydrogel to be used as an efficient adsorbent in wastewater treatment.

引用

页数：9