从排放水中去除污染物至关重要,需要紧急援助,以保持清洁的水。吸附是最常见的,高效,以及用于水处理的低价方法。各种基于多糖的凝胶已被用作废水中的有效染料吸附剂。这篇综述总结了过去十年基于天然多糖(甲壳素,壳聚糖,纤维素,淀粉,普鲁兰,和葡聚糖)关于它们的染料吸附效率。除了它们的自然丰度,多糖的属性,如生物相容性,生物降解性,低成本使它们不仅高效,也是环境可持续的水净化候选人。合成和染料去除性能以及多种因素对凝胶保持能力的影响,动力学,和吸附研究中遇到的等温线模型,被介绍。热力学参数,还介绍了吸附剂的回收能力以及结论和未来前景。
Removal of contaminants from discharge water is vital and demands urgent assistance with the goal to keep clean water. Adsorption is one of the most common, efficient, and low-priced methods used in water treatment. Various polysaccharide-based gels have been used as efficient dye adsorbents from wastewater. This review summarizes cutting-edge research of the last decade of different hydrogels based on natural polysaccharides (chitin, chitosan, cellulose, starch, pullulan, and dextran) concerning their dye adsorption efficiency. Beyond their natural abundance, attributes of polysaccharides such as biocompatibility, biodegradability, and low cost make them not only efficient, but also environmentally sustainable candidates for water purification. The synthesis and dye removal performance together with the effect of diverse factors on gels retaining ability, kinetic, and isotherm models encountered in adsorption studies, are introduced. Thermodynamic parameters, sorbent recycling capacity along with conclusions and future prospects are also presented.