State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.
State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.
Int J Biol Macromol. 2021 Oct 31;189:53-64. doi: 10.1016/j.ijbiomac.2021.08.047. Epub 2021 Aug 12.
The shortage of freshwater resources is an urgent problem worldwide, especially for some areas that lack rainfall conditions. The development of reliable wastewater treatment and freshwater harvesting equipment has become an urgent demand. Hydrogel is a porous 3D network structure with good pollutant adsorption capacity, water holding capacity, water adsorption capacity, and reversible swelling ability, which has been widely used in water treatment. Chitosan (CH), as the abundant bioactive material in nature, is commonly used to prepare hydrogels with low-cost, favorable stability, good antimicrobial activity, high mechanical properties, biodegradability, and environmental friendliness. Therefore, this review presents a comprehensive review of the various applications of CH-based hydrogels in water treatment including various pollutant adsorption, oil-water separation, seawater desalination, and atmospheric condensation. The relevant mechanisms, application potential, and challenge are also illustrated. This review aims to provide a viable idea to address the shortage of freshwater resources.
淡水资源短缺是一个全球性的紧迫问题，特别是在一些缺乏降雨条件的地区。开发可靠的废水处理和淡水采集设备已成为当务之急。水凝胶是一种具有良好的污染物吸附能力、持水能力、水吸附能力和可逆溶胀能力的多孔 3D 网络结构，已广泛应用于水处理中。壳聚糖（CH）作为自然界中丰富的生物活性物质，通常用于制备具有低成本、良好稳定性、良好抗菌活性、高机械性能、可生物降解性和环境友好性的水凝胶。因此，本综述全面介绍了 CH 基水凝胶在水处理中的各种应用，包括各种污染物吸附、油水分离、海水淡化和大气冷凝。还说明了相关的机制、应用潜力和挑战。本综述旨在提供一个可行的思路来解决淡水资源短缺的问题。
