College of Chemistry and Chemical Engineering, Xinjiang Agricultural University, Urumchi, Xinjiang 830052, PR China.
Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, PR China.
Carbohydr Polym. 2022 Jan 15;276:118789. doi: 10.1016/j.carbpol.2021.118789. Epub 2021 Oct 24.
Natural macromolecules have been used to adsorb pollutants including heavy metal ions and organic dyes due to low-cost, accessible, biodegradable, and eco-friendly advantages. Pectin, an important natural polymer, possesses abundant carboxyl and hydroxyl functional groups that can interact with the metal and organic cations via electrostatic interaction; as well as be modified by other chemicals for preparing hybrid and composite materials. The resultant materials have been employed to remove pollutants from aqueous solution; the importance of chemical composition was unlocked. Here, we reviewed contaminant removal by pectin, and pectin-based hybrid and composite materials, and highlighted the role of functional groups on pollutant removal. The removal of heavy metal ions was mainly due to surface coordination, while that of organic cations to electrostatic interactions of the functional groups. Moreover, the influence of initial contaminant concentration was critically discussed. The comprehensive review can provide valuable information on pectin and its application in contaminant removal.
由于具有成本低、易得、可生物降解和环境友好等优点，天然大分子已被用于吸附包括重金属离子和有机染料在内的污染物。果胶是一种重要的天然聚合物，具有丰富的羧基和羟基官能团，可通过静电相互作用与金属和有机阳离子相互作用；也可以通过其他化学物质进行修饰，以制备杂化和复合材料。所得材料已被用于从水溶液中去除污染物；化学组成的重要性被揭示了出来。在这里，我们综述了果胶及其基于果胶的杂化和复合材料对污染物的去除作用，并强调了官能团在污染物去除中的作用。重金属离子的去除主要是由于表面配位，而有机阳离子的去除则是由于官能团的静电相互作用。此外，还批判性地讨论了初始污染物浓度的影响。全面的综述可以为果胶及其在污染物去除中的应用提供有价值的信息。
