Abstract:

The spherical hydrogel adsorbent prepared by titration-gel method has a 3D inverted funnel-like micro-morphological structure, a wide pore size distribution, and a fast response mechanism to heavy metals, dyes and other pollutants in water. It has been widely used in water treatment process research. The one-step titration-gel method is really a facile way to fabricate the hydrogel adsorbents with observably spherical structure. Herein, the formation mechanism of the hydrogel beads which were developed by the one-step titration-gel method was discussed. And, the authors of this manuscript review the researches which published in recently that used the hydrogel beads to remove the different pollutants from waste water. The main difficulties and limitations, or the prospects of the spherical hydrogel beads used in waste water treatment, also, were stated. The authors of this manuscript hoped this work would provide a corresponding guideline for the researchers who are aiming at preparing the spherical hydrogel adsorbents for waste water treatments.

Key words: gel, one-step titration gel method, preparation, adsorbents, waste water

摘要：

滴定-凝胶法制备球形水凝胶吸附材料具有3D倒漏斗状微观形貌结构，孔径分布宽泛，对水体中重金属、染料等污染物具有快速响应机制，已被广泛用于水处理过程研究。综述了滴制法制备球形水凝胶吸附材料的主要过程机理、水凝胶具有的特殊形貌结构及其在水处理过程中的应用，分析了球形水凝胶吸附材料在水处理应用过程中存在的问题和局限，并指出了其在水处理领域的应用前景及发展方向。

关键词: 凝胶, 滴定-凝胶法, 制备, 吸附剂, 废水