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Sodium alginate/sodium lignosulfonate hydrogel based on inert Ca2+ activation for water conservation and growth promotion
Environmental Research ( IF 7.7 ) Pub Date : 2024-01-06 , DOI: 10.1016/j.envres.2024.118144 Xinrui Zhang 1 , Lifei Yang 1 , Weicong Wang 2 , Yuzhou Xiang 1 , Jingshuai Liu 1 , Yulong An 1 , Junming Shi 1 , Houjuan Qi 1 , Zhanhua Huang 3
Environmental Research ( IF 7.7 ) Pub Date : 2024-01-06 , DOI: 10.1016/j.envres.2024.118144 Xinrui Zhang 1 , Lifei Yang 1 , Weicong Wang 2 , Yuzhou Xiang 1 , Jingshuai Liu 1 , Yulong An 1 , Junming Shi 1 , Houjuan Qi 1 , Zhanhua Huang 3
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Soil degradation has become a major global problem owing to the rapid development of agriculture. The problems of soil drought and decreased soil fertility caused by soil degradation severely affect the development of the agricultural and forestry industries. In this study, we designed sodium alginate (SA)/sodium lignosulfonate (SLS) hydrogel based on the activation and crosslinking of inert Ca. CaCO and SA were mixed, and then, inert Ca was activated to prepare a gel with a stable structure and a uniform interior and exterior. The crosslinking activated by inert Ca enhanced the stability of the hydrogel, and the optimal swelling rate of the hydrogel reached 28.91 g/g, thereby effectively improving the water-holding capacity of the soil (77.6–108.83 g/kg). SLS was degraded into humic acid (HA) and gradually released, demonstrating a positive growth-promoting effect in plant growth experiments. The SA/SLS hydrogel can be used for soil water retention and mitigation to significantly decrease the water loss rate of soil. This study will assist in addressing soil drought and fertility loss.
中文翻译：
基于惰性 Ca2+ 活化的海藻酸钠/木质素磺酸钠水凝胶，用于节水和促进生长
随着农业的快速发展，土壤退化已成为全球性的重大问题。土壤退化引起的土壤干旱、土壤肥力下降等问题严重影响农林业的发展。在本研究中，我们基于惰性Ca的活化和交联设计了海藻酸钠（SA）/木质素磺酸钠（SLS）水凝胶。将CaCO3和SA混合，然后活化惰性Ca，制备结构稳定、内外均匀的凝胶。惰性Ca激活的交联增强了水凝胶的稳定性，水凝胶的最佳溶胀率达到28.91 g/g，从而有效提高了土壤的持水能力（77.6-108.83 g/kg）。 SLS被降解为腐植酸（HA）并逐渐释放，在植物生长实验中表现出积极的促生长作用。 SA/SLS水凝胶可用于土壤保水缓释，显着降低土壤失水率。这项研究将有助于解决土壤干旱和肥力丧失问题。
更新日期：2024-01-06
中文翻译：
基于惰性 Ca2+ 活化的海藻酸钠/木质素磺酸钠水凝胶，用于节水和促进生长
随着农业的快速发展，土壤退化已成为全球性的重大问题。土壤退化引起的土壤干旱、土壤肥力下降等问题严重影响农林业的发展。在本研究中，我们基于惰性Ca的活化和交联设计了海藻酸钠（SA）/木质素磺酸钠（SLS）水凝胶。将CaCO3和SA混合，然后活化惰性Ca，制备结构稳定、内外均匀的凝胶。惰性Ca激活的交联增强了水凝胶的稳定性，水凝胶的最佳溶胀率达到28.91 g/g，从而有效提高了土壤的持水能力（77.6-108.83 g/kg）。 SLS被降解为腐植酸（HA）并逐渐释放，在植物生长实验中表现出积极的促生长作用。 SA/SLS水凝胶可用于土壤保水缓释，显着降低土壤失水率。这项研究将有助于解决土壤干旱和肥力丧失问题。
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