MPEG grafted alkylated carboxymethyl chitosan as a high-efficiency demulsifier for O/W crude oil emulsions

被引：41

作者：

Lyu, Renliang ^{[1
]}

Xia, Ting ^{[1
]}

Liang, Cheng ^{[1
]}

Zhang, Cheng ^{[1
]}

Li, Zeqin ^{[1
]}

Wang, Lichun ^{[2
]}

Wang, Yi ^{[1
]}

Wu, Ming ^{[3
,4
]}

Luo, Xiaogang ^{[1
,5
]}

Ma, Jiayu ^{[1
]}

Wang, Cunwen ^{[1
]}

Xu, Caili ^{[6
]}

机构：

[1] Wuhan Inst Technol, Sch Chem Engn & Pharm, Key Lab Novel Reactor & Green Chem Technol Hubei, Key Lab Green Chem Proc,Minist Educ, Wuhan 430205, Peoples R China

[2] Nantong Univ, Sch Text & Clothing, Nantong 226019, Peoples R China

[3] South Cent Univ Nationalities, Coll Resources & Environm Sci, Key Lab Catalysis & Energy Mat Chem, Minist Educ, Wuhan 430074, Peoples R China

[4] South Cent Univ Nationalities, Coll Resources & Environm Sci, Hubei Key Lab Catalysis & Mat Sci, Wuhan 430074, Peoples R China

[5] Zhengzhou Univ, Sch Mat Sci & Engn, Zhengzhou 450001, Peoples R China

[6] Wuhan Inst Technol, Xingfa Sch Min Engn, Wuhan 430074, Peoples R China

来源：

CARBOHYDRATE POLYMERS | 2020年 / 241卷

基金：

中国国家自然科学基金;

关键词：

Alkylated; Carboxymethyl chitosan; (ACMC); Methoxy polyethylene glycol; (MPEG); Surface tension; Demulsification efficiency; WATER; SURFACTANT; EMULSIFICATION; BREAKING; OXIDE;

D O I：

10.1016/j.carbpol.2020.116309

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Three kinds of novel environmentally benign and high-efficiency crude oil demulsifiers were prepared using methoxy polyethylene glycol (MPEG) to modify alkylated carboxymethyl chitosan (ACMC). Structures of the demulsifiers were confirmed using FT-IR and H-1 NMR, and the relationship between surface tension and concentration was tested. Demulsification performance was investigated using the bottle test method with oil-in-water (O/W) emulsions that were prepared in lab conditions. The demulsification efficiency was as high as 79.1 %-84.9 %, and the possible mechanism of the demulsification process is discussed. Results show that MPEG-grafted ACMC (MPEG-ACMC) has a promising application as a demulsifier for dealing with emulsified O/W crude oil.

引用

页数：8

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