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基于生物质粉煤灰包埋在海藻酸钙微球中的新型土壤改良剂的开发与表征。

Development and Characterization of a Novel Soil Amendment Based on Biomass Fly Ash Encapsulated in Calcium Alginate Microspheres.

机构信息

Department of Chemistry, The University of Zagreb Faculty of Agriculture, Svetošimunska c. 25, 10000 Zagreb, Croatia.

Ruđer Bošković Institute, Laboratory for Biocolloids and Surface Chemistry, Bijenička c. 54, 10000 Zagreb, Croatia.

出版信息

Int J Mol Sci. 2022 Sep 1;23(17):9984. doi: 10.3390/ijms23179984.

DOI:10.3390/ijms23179984
PMID:36077392
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9456561/
Abstract

Biomass fly ash (BFA) from a biomass cogeneration plant was encapsulated into calcium alginate microspheres (ALG/Ca) and characterized. An FTIR analysis indicated that BFA loading weakened molecular interactions between ALG/Ca constituents (mainly hydrogen bonding and electrostatic interactions), thus changing the crosslinking density. SEM and AFM analyses revealed a wrinkled and rough surface with elongated and distorted granules. The in vitro release of BFA's main components (K, Ca, and Mg) was controlled by diffusion through the gel-like matrix, but the kinetics and released amounts differed significantly. The smaller released amounts and slower release rates of Ca and Mg compared to K resulted from the differences in the solubility of their minerals as well as from the interactions of divalent cations with alginate chains. The physicochemical properties of the novel microsphere formulation reveal significant potential for the prolonged delivery of nutrients to crops in a safe manner.

摘要

从生物质热电厂得到的生物质飞灰（BFA）被封装到海藻酸钠微球（ALG/Ca）中，并进行了表征。FTIR 分析表明，BFA 的负载削弱了 ALG/Ca 成分之间的分子相互作用（主要是氢键和静电相互作用），从而改变了交联密度。SEM 和 AFM 分析显示，表面有褶皱和粗糙，颗粒拉长且变形。BFA 的主要成分（K、Ca 和 Mg）通过凝胶状基质的扩散控制体外释放，但动力学和释放量有显著差异。与 K 相比，Ca 和 Mg 的释放量较小，释放速度较慢，这是由于它们的矿物质溶解度以及二价阳离子与海藻酸盐链的相互作用不同所致。新型微球制剂的物理化学性质显示出在安全的方式下向作物持续输送营养物质的巨大潜力。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/74da/9456561/8ba94a3e423b/ijms-23-09984-g008.jpg
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