Removal of organic compounds by alginate gel beads with entrapped activated carbon.
Removal of organic compounds by alginate gel beads with entrapped activated carbon.
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DOI：
10.1016/j.jhazmat.2005.01.010
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发表时间：
2005-04
影响因子：
13.6
通讯作者：
Yongbo Lin;Bunshi Fugetsu;Norifumi Terui;Shunitz Tanaka
中科院分区：
文献类型：
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作者：
Yongbo Lin;Bunshi Fugetsu;Norifumi Terui;Shunitz Tanaka
通过测量几种不同电荷和尺寸的有机化合物的去除量，研究了使用不同类型金属离子制备的藻酸盐凝胶（AG）珠和活性炭包埋的 AG（AG-AC）珠的吸附情况。在 CaCl2 溶液中制备的 AG-AC 珠可吸附带强正电荷的化合物以及电中性和低分子量化合物，例如对氯苯酚。然而，高分子量腐殖酸不被 AG-AC 吸附。 AG-AC 从腐殖酸溶液中选择性吸附对氯苯酚。将由 AG 中捕获的 AC 的吸附等温线获得的吸附容量与 AC 的吸附容量进行比较。在 FeCl3 溶液中制备的 AG-AC 珠能够特异性吸附带负电的没食子酸。因此，将AC捕获到AG中导致选择性吸附。
The adsorption of alginate gel (AG) beads and AG with activated carbon entrapped (AG–AC) beads prepared using different types of metal ions were investigated by measuring the removal of several organic compounds with different charges and size. AG–AC beads prepared in a CaCl2solution adsorbed strongly positively charged compounds as well as electrically neutral and low molecular weight compounds such as p-chlorophenol. However, a high molecular weight humic acid was not adsorbed by AG–AC. The AG–AC selectively adsorbed p-chlorophenol from a humic acid solution. The adsorption capacity obtained from the adsorption isotherm of AC entrapped in AG was compared with that of AC. The AG–AC beads prepared in a solution of FeCl3were able to specifically adsorb negatively charged gallic acid. Thus, entrapping AC into AG resulted in the selective adsorption.