n -甲基氨基葡萄糖修饰螯合纤维与二氧化锰氧化吸附砷的研究

Atsushi Kuraoka, Toshiyuki Umebayashi, S. Nishihama, K. Yoshizuka
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引用次数: 0

摘要

我们研究了利用nmethylglucamine修饰的螯合纤维吸附和二氧化锰氧化As(III)到As(V)的组合去除水中砷(As)。批量实验表明,螯合纤维对As(V)的选择性高于As(III),特别是在酸性pH区域,这是因为水溶液中As的种类分布不同。在螯合纤维的吸附体系中加入二氧化锰,实现了对As(III)的氧化选择性吸附。氧化吸附可以通过二氧化锰与螯合纤维的连接柱进行。进料水溶液中的As(III)通过二氧化锰柱时被氧化为As(V),随后As(V)在螯合纤维柱中被吸附。该方法为As(III)和As(V)的去除提供了一种简单的方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Oxidative Adsorption of Arsenic by N-Methylglucamine-modified Chelate Fiber and Manganese Dioxide
We investigated removal of arsenic (As) from water using a combination of adsorption on a Nmethylglucamine-modified chelate fiber and oxidation of As(III) to As(V) by manganese dioxide. Batch experiments revealed that the chelate fiber had high selectivity for As(V) over As(III), especially in the acidic pH region, because of differences in the species distribution of As in an aqueous solution. Oxidative and selective adsorption of As(III) was achieved when manganese dioxide was added to the adsorption system with the chelate fiber. The oxidative adsorption could be performed using the connected columns of the manganese dioxide and the chelate fiber. As(III) in the aqueous feed solution was oxidized to As(V) as it passed through the manganese dioxide column, and this was followed by adsorption of As(V) in the chelate fiber column. This method provides a simple removal method of As, as both As(III) and As(V),
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