Adsorption and mechanism study for reactive red 120 dye removal by cross-linked chitosan-epichlorohydrin biobeads

被引：21

作者：

Jawad, Ali H. ^{[1
]}

Mubarak, Nur Shazwani Abdul ^{[1
]}

Sabar, S. ^{[2
]}

机构：

[1] Univ Teknol MARA, Fac Appl Sci, Shah Alam 40450, Selangor, Malaysia

[2] Univ Sains Malaysia, Sch Distance Educ, Chem Sect, Minden 11800, Penang, Malaysia

来源：

DESALINATION AND WATER TREATMENT | 2019年 / 164卷

关键词：

Chitosan; Cross-linking; Epichlorohydrin; Adsorption; Reactive Red 120; Adsorption mechanism; AQUEOUS-SOLUTION; ADSORBENT; OXIDATION; RED-120; GLASS;

D O I：

10.5004/dwt.2019.24438

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In this research, cross-linked chitosan-epichlorohydrin biobeads (CEB) were prepared to be potential biosorbent for reactive red 120 (RR120) dye removal from aqueous solution. Adsorption experiments were carried out as a function of contact time (0-600 min), initial dye concentration (30-400 mg/L), and pH (3-12). The adsorption data of RR120 on CEB were in agreement with Langmuir isotherm. The adsorption capacity of CEB for RR120 was 81.3 mg/g at 303 K. The kinetic data were well described by pseudo-second-order kinetic model. The adsorption process was spontaneous and endothermic in nature. The mechanism of adsorption included mainly hydrogen bonding interaction, electrostatic attractions, and n-pi stacking interaction. This study reveals that the CEB as a promising biomaterial for removal of reactive dye from aqueous solutions.

引用

页码：378 / 387

页数：10

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