Modified Wheat Starch Granules for Ibuprofen Adsorption in Aqueous Solution

被引：2

作者：

Almonaityte, Karolina ^{[1
]}

Bendoraitiene, Joana ^{[1
]}

Navikaite-Snipaitiene, Vesta ^{[1
]}

Rutkaite, Ramune ^{[1
]}

机构：

[1] Kaunas Univ Technol, Dept Polymer Chem & Technol, Radvilenu Rd 19, LT-50254 Kaunas, Lithuania

来源：

WATER AIR AND SOIL POLLUTION | 2023年 / 234卷 / 07期

关键词：

Cross-linked cationic wheat starch; Adsorption; Ibuprofen; Electrostatic interaction; TEMPERATURE; REMOVAL; PH;

D O I：

10.1007/s11270-023-06475-6

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Cross-linked cationic wheat starches (CLCS) of different degree of substitution (DS) of quaternary ammonium groups were synthesized with or without the addition of CaO and used for ibuprofen (IB) adsorption in an aqueous solution. The equilibrium adsorption of IB onto modified starch granules was investigated. The parameters of the Dubinin-Radushkevich, Fowler-Guggenheim, Freundlich, and Langmuir adsorption models were calculated and revealed that the driving forces of adsorption were electrostatic interactions between quaternary ammonium groups of modified starch and carboxylate groups of IB. The adsorption process was best described by employing the Langmuir isotherm model and the highest adsorption capacity for IB uptake equal to 550 mg/g was achieved by using CLCS with DS of quaternary ammonium groups of 0.51. The addition of CaO to the synthesis mixture improved the adsorption properties of CLCS granules and allowed to generate a potential sorbent for the removal of IB from the aqueous solution.

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页数：13

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