Recent Advances in Superabsorbent Hydrogels Derived from Agro Waste Materials for Sustainable Agriculture: A Review,Journal of Agricultural and Food Chemistry

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Recent Advances in Superabsorbent Hydrogels Derived from Agro Waste Materials for Sustainable Agriculture: A Review
Journal of Agricultural and Food Chemistry ( IF 5.7 ) Pub Date : 2024-08-31 , DOI: 10.1021/acs.jafc.4c04970
Jingling Zhu _{1,

2} , Zhongxing Zhang ₁ , Yuting Wen _{1,

3,

4} , Xia Song ₁ , Wee Kee Tan ₂ , Choon Nam Ong _{2,

5} , Jun Li _{1,

2,

3,

4}

Affiliation

Superabsorbent hydrogels made from agro waste materials have the potential to promote sustainable agriculture and environmental sustainability. These hydrogels not only help reduce water consumption and increase crop yields but also contribute to minimizing waste and lowering greenhouse gas emissions. Recent research on superabsorbent hydrogels derived from agro wastes has focused on the preparation of hydrogels based on natural polymers isolated from agro wastes, such as cellulose, hemicellulose, and lignin. This review provides an in-depth examination of hydrogels developed from raw agro waste materials and natural polymers extracted from agro wastes, highlighting that these studies start with raw wastes as the main materials. The utilization strategies for specific types of agro wastes are comprehensively described. This review outlines different methods utilized in the production of these hydrogels, including physical cross-linking techniques such as dissolution-regeneration and freeze–thawing, as well as chemical cross-linking methods involving various cross-linking agents and graft polymerization techniques such as free radical polymerization, microwave-assisted polymerization, and γ radiation graft polymerization. Specifically, this review explores the applications of agro waste-based superabsorbent hydrogels in enhancing soil properties such as water retention and slow-release of fertilizers for sustainable agriculture.

中文翻译：

农业废弃物高吸水性水凝胶用于可持续农业的研究进展

由农业废料制成的高吸水性水凝胶具有促进可持续农业和环境可持续性的潜力。这些水凝胶不仅有助于减少水消耗和提高作物产量，还有助于减少浪费和减少温室气体排放。最近对农业废弃物衍生的高吸水性水凝胶的研究集中在基于从农业废弃物中分离的天然聚合物（如纤维素、半纤维素和木质素）制备水凝胶。这篇综述对从农业原料和农业废弃物中提取的天然聚合物开发的水凝胶进行了深入研究，强调这些研究以原料为主要材料。全面描述了特定类型农业废弃物的利用策略。本文概述了生产这些水凝胶的不同方法，包括物理交联技术，如溶解再生和冻融，以及涉及各种交联剂和接枝聚合技术的化学交联方法，如自由基聚合、微波辅助聚合和γ辐射接枝聚合。具体来说，这篇综述探讨了基于农业废弃物的高吸水性水凝胶在增强土壤特性（如保水和缓释肥料）方面的应用，以实现可持续农业。

更新日期：2024-08-31

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