天然多糖基水凝胶的制备及水体中重金属移除研究进展

Research progress on preparation of natural polysaccharide-based hydrogels and removal of heavy metals from water body:a review

水体中存在重金属会威胁到人类及其他生物体的健康,必须对水体中重金属离子进行去除。吸附法被认为是水体中重金属去除最有前景的技术之一,利用绿色、经济、可回收的天然材料吸附水体中的重金属离子是目前的热点研究话题。近年来,水凝胶材料由于其三维立体网络结构的特点及良好的金属离子吸附性能,使其在处理水体中重金属方面有了广泛应用。本文综述了水凝胶的分类及多种类型天然多糖基水凝胶的研究及应用进展,并对天然多糖基水凝胶的制备方法、吸附效率进行了归纳总结,最后对天然多糖基水凝胶今后的研究方向和应用前景进行了展望,提出未来对天然多糖基水凝胶在结构、制备方法、原料来源、应用领域及绿色环保等多方面加以创新的建议,旨在为吸附材料的研究及应用提供科学参考。

The heavy metal ions must be removed from the water for heavy metals in waters can threaten the health of humans and other organisms.Adsorption is considered to be one of the most promising technologies for the removal of heavy metals from water.The use of green,economical and recyclable natural materials to adsorb heavy metal ions in waters is a hot research topic.In recent years,hydrogel materials have been widely used in the treatment of heavy metals in water due to their three-dimensional network structure and good metal ion adsorption performance.This article reviews the research and application progress of various types of natural-based hydrogels,and summarizes their preparation methods and adsorption efficiency,and classification of hydrogels.Finally,the future research projects and application prospects of natural polysaccharide-based hydrogels are prospected,and suggestions on the innovation of natural polysaccharide-based hydrogels in terms of structure,preparation methods,source of preparation materials,application fields,and environmental protection are proposed,aiming to provide scientific references with the research and application of adsorption materials.