基于果胶的混合生物吸附剂去除锌离子。

Hybrid pectin-based biosorbents for zinc ions removal.

机构信息

Silesian University of Technology, Faculty of Chemistry, Department of Inorganic, Analytical Chemistry and Electrochemistry, Bolesława Krzywoustego 6, 44-100 Gliwice, Poland.

出版信息

Carbohydr Polym. 2017 Aug 1;169:213-219. doi: 10.1016/j.carbpol.2017.03.095. Epub 2017 Mar 31.

DOI:10.1016/j.carbpol.2017.03.095

PMID:28504138

Abstract

In this paper, a set of the hybrid biosorbents, made of pectin and polysaccharide additives (arabic, tragacanth, guar, karaya, xanthan, gellan, carob gums, agar-agar) or lecithin (phospholipid), was investigated and tested for zinc ions removal. The immobilization of the polysaccharides into the pectin matrix was proved by the IR spectroscopy. The structure of the working biosorbents was observed in SEM micrographs. The influence of the additive type and pH on the sorption properties and swelling index was investigated. The maximum sorption capacities were achieved in pH above 4 and ranged from 17.7 to 25.4mg/g for lecithin and xanthan gum as additives, respectively. The results show that the hybrid pectin-based beads are promising biosorbents for zinc removal from aqueous solutions.

摘要

本文研究并测试了一组由果胶和多糖添加剂（阿拉伯胶、黄蓍胶、瓜尔胶、卡拉胶、黄原胶、结冷胶、刺槐豆胶、琼脂）或卵磷脂（磷脂）制成的混合生物吸附剂，用于去除锌离子。IR 光谱证明了多糖在果胶基质中的固定化。工作生物吸附剂的结构通过 SEM 显微照片进行了观察。考察了添加剂类型和 pH 值对吸附性能和溶胀指数的影响。在 pH 值高于 4 的情况下，添加物分别为卵磷脂和黄原胶时，最大吸附容量达到 17.7 至 25.4mg/g。结果表明，基于果胶的混合珠粒是一种很有前途的用于从水溶液中去除锌的生物吸附剂。