期刊
JOURNAL OF SAUDI CHEMICAL SOCIETY
卷 20, 期 2, 页码 185-194出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jscs.2013.03.007
关键词
Industrial discharge water; Polycontaminated effluent; Removal; Adsorption; Ion-exchange; Cyclodextrin
资金
- Agence de l'Eau Rhone-Mediterranee-Corse (NIRHOFEX Program)
- Conseil Regional de Franche-Comte
In this study, adsorption-oriented processes for pollutant removal from metal polycontaminated surface-finishing discharge water were applied individually as well as in combination with ion-exchange treatment to remove the remaining metal ions and organic load. Several materials were compared using batch experiments, namely an activated carbon, three ion-exchange resins (IRA 402Cl, IR 120H and TP 207), and two non-conventional cross-linked polysaccharide-based biosorbents (starch and cyclodextrin). This article presents the abatements obtained in chemical pollution as monitored by complete chemical analysis. For the same experimental conditions (similar discharge water, pollutant concentrations, stirring rate, contact time, and initial pH), the highest levels of pollutant removal were attained with the combined use of two materials, an activated carbon and a mixture of two ion-exchange resins. This physicochemical treatment effectively lowered the main pollutants present in the discharge water such as Cu, Ni and COD, by more than 96%, 79% and 74% respectively (average values for three samples), while the treatment with carbon alone lowered them by 58%, 9% and 70%, and resins alone by 85%, 61% and 16%. Similar interesting results were obtained with the cyclodextrin-based adsorbent and its use alone was sufficient to obtain decreases in Cu, Ni and COD of more than 94%, 77% and 67% respectively. The adsorption-oriented process using cyclodextrin polymer could be an advantageous approach for removing organic and metallic pollutants from metal surface-finishing discharge water due to the non-toxic character of CD to humans and the environment. (C) 2013 Production and hosting by Elsevier B.V. on behalf of King Saud University.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据