Research Progress in Lignin-Based Slow/Controlled Release Fertilizer
Research Progress in Lignin-Based Slow/Controlled Release Fertilizer
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DOI：
10.1002/cssc.202000455
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发表时间：
2020-05-25
期刊：
影响因子：
8.4
通讯作者：
Sun, Run-Cang
中科院分区：
文献类型：
--
作者：
Chen, Jing;Fan, Xiaolin;Sun, Run-Cang
木质素作为植物的骨架成分，是一种可再生、可自然降解的有机高分子聚合物。每年，植物生长产生大约1500亿吨木质素。在造纸和生物质精炼等工业过程中，大量的木质素是作为副产品形成的。大多数技术木质素都是直接燃烧获得热量，这不仅浪费有机物，而且会导致环境污染等问题。有趣的是，由于木质素具有良好的缓释特性以及螯合等功能，可作为肥料的缓释载体和包衣材料。木质素缓释/控释肥料的制备可以通过持续化学（氨氧化、曼尼希反应和其他化学修饰）、包衣（不经化学修饰或经化学修饰）和螯合修饰来实现。本文系统综述了木质素缓释/控释肥料的制备方法、机理及其应用。虽然木质素基缓释肥料的评价标准和方法尚不完善，但相信会有越来越多的学者予以重视，加快木质素基缓释肥料的开发和应用，完善其相关标准。总之，迫切需要改进木质素基缓释肥料的制备工艺，并尽快将木质素基缓释肥料应用于生产实践。
As a skeleton component of plants, lignin is an organic macromolecule polymer that can be regenerated and naturally degraded. Annually, plant growth produces about 150 billion tons of lignin. In industrial processes such as paper and biomass-refining industry, large amounts of lignin are formed as by-products. Most of technical lignins are directly combusted to obtain heat, which not only is a waste of organic matter but also leads to environmental pollution and other issues. Interestingly, lignin can be used as slow-release carriers and coating materials for fertilizers due to its excellent slow release properties as well as chelating and other functionalities. Preparation of lignin-based slow/controlled release fertilizers can be achieved by sustainable chemical (ammoxidation, Mannich reaction, and other chemical modifications), coating (without or with chemical modification), and chelation modifications. This Review systematically summarizes the methods, mechanisms, and application of the above methods for preparing lignin-based slow/controlled release fertilizers. Although the evaluation standards and methods of lignin-based slow/controlled release fertilizers are not perfect, it is believed that more and more scholars will pay more attention to them to accelerate the development and application of lignin-based slow/controlled release fertilizers, so as to improve their relevant standards. In short, there is an urgent need to improve the preparation process of lignin-based slow/controlled release fertilizers and application as lignin-based slow/controlled release fertilizers to production practice as soon as possible.