Investigation of fixed bed adsorption column operation parameters using a chitosan material for treatment of arsenate contaminated water

被引：58

作者：

Brion-Roby, Roxanne ^{[1
,2
]}

Gagnon, Jonathan ^{[1
]}

Deschenes, Jean-Sebastien ^{[2
]}

Chabot, Bruno ^{[3
]}

机构：

[1] Univ Quebec Rimouski, Dept Biol Chim & Geog, 300 Allee Ursulines, Rimouski, PQ G5L 3A1, Canada

[2] Univ Quebec Rimouski, Dept Math Informat & Genie, 300 Alle Ursulines, Rimouski, PQ G5L 3A1, Canada

[3] Univ Quebec Trois Rivieres, Ctr Rech Mat Lignocellulos, 3351 Boul Forges,CP 500, Trois Rivieres, PQ G9A 5H7, Canada

来源：

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING | 2018年 / 6卷 / 01期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Chitosan adsorbent; Arsenic removal; Fixed bed column; FPLC; Ion exchange; REMOVAL; SORPTION; AS(III); CU(II); CHITIN; AS(V);

D O I：

10.1016/j.jece.2017.12.032

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

According to the World Health Organization, arsenic is one of the most toxic elements for human health and the concentration limits of this pollutant are hardly attained in drinking water over the world. Arsenic(V) contaminated water at pH 8.0 was treated using a fixed bed column filled with a chitosan adsorbent material, where the operating experimental column conditions were studied. The effects of bed diameter, bed depth, arsenic inlet concentration, flow direction and flow rate were studied using breakthrough curves (BTC) acquired in real-time using a chromatographic instrument. Thomas, Yoon-Nelson and Adams-Bohart models were used to model the BTC which were best described by the two first models. Experimental data showed that dynamic adsorption capacities were dependent of flow direction and inlet concentration and were independent of the other factors considered. Moreover, an enlargement of the column did not affect the maximal capacity (50 mg As g(-1)). The height and the moving rate of the exchange zone were also determined for all experimental conditions studied. Regeneration of the exhausted column can be achieved easily using a NaCl solution.

引用

页码：505 / 511

页数：7

共 24 条

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