浮石屑与沸石凝灰岩在农业应用中释放Mn2+的潜力

IF 4.8 3区材料科学 Q1 CHEMISTRY, APPLIED

Microporous and Mesoporous Materials Pub Date : 2025-05-22 DOI:10.1016/j.micromeso.2025.113704

Giulio Galamini , Altimari Fabiana , Barbieri Luisa , Malavasi Gianluca , Malferrari Daniele

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引用次数: 0

摘要

采石场废物和副产品对采矿业构成了重大的环境和经济挑战。本研究探讨了浮石屑作为Mn2+载体在作物叶面施肥中的潜力。对Mn2+的富集和释放进行了动力学和等温线建模，并将Mn2+饱和水平与理论阳离子交换容量（CEC）进行了比较。采用人工地下水模拟喷雾机的农业条件。浮石屑与沸石凝灰岩（富辉石）进行了比较。尽管浮石具有较高的非晶态含量（87.5 wt%）和较低的沸石矿物含量（0.80 wt%），但浮石对Mn2+具有更强的亲和力，其理论CEC的饱和百分比高于沸石凝灰岩。浮石还表现出更稳定的富集和释放，使其成为向作物输送Mn2+的有前途的材料。因此，在叶面施肥中使用浮石废料可能代表了一种新的采石场废物增值方法。

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Potential of pumice scraps compared to zeolitized tuff for Mn2+ release in agricultural applications

Quarry waste and by-products pose significant environmental and economic challenges for the mining industry. This study investigates the potential of pumice scraps as carriers for Mn²⁺ to crops for foliar fertilization. Kinetic and Isotherm modelling were performed for Mn²⁺-enrichment and release, and Mn²⁺ saturation level was compared to theoretical cation exchange capacity (CEC). Synthetic groundwater was used to simulate agricultural conditions in spraying machines. Pumice scraps were compared with more commonly studied zeolitized tuff (chabazite-rich). Despite its higher amorphous content (87.5 wt%) and lower zeolitic mineral content (analcime, 0.80 wt%), pumice exhibited greater affinity for Mn²⁺, achieving higher saturation percentage of the theoretical CEC than the zeolitized tuff. Pumice also demonstrated a more stable enrichment and release, making it a promising material for delivering Mn²⁺ to crops. The use of pumice scraps in foliar fertilization could therefore represent a new way to valorise quarry waste materials.

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来源期刊

Microporous and Mesoporous Materials 化学-材料科学：综合

CiteScore

10.70

自引率

5.80%

发文量

649

审稿时长

26 days

期刊介绍： Microporous and Mesoporous Materials covers novel and significant aspects of porous solids classified as either microporous (pore size up to 2 nm) or mesoporous (pore size 2 to 50 nm). The porosity should have a specific impact on the material properties or application. Typical examples are zeolites and zeolite-like materials, pillared materials, clathrasils and clathrates, carbon molecular sieves, ordered mesoporous materials, organic/inorganic porous hybrid materials, or porous metal oxides. Both natural and synthetic porous materials are within the scope of the journal. Topics which are particularly of interest include: All aspects of natural microporous and mesoporous solids The synthesis of crystalline or amorphous porous materials The physico-chemical characterization of microporous and mesoporous solids, especially spectroscopic and microscopic The modification of microporous and mesoporous solids, for example by ion exchange or solid-state reactions All topics related to diffusion of mobile species in the pores of microporous and mesoporous materials Adsorption (and other separation techniques) using microporous or mesoporous adsorbents Catalysis by microporous and mesoporous materials Host/guest interactions Theoretical chemistry and modelling of host/guest interactions All topics related to the application of microporous and mesoporous materials in industrial catalysis, separation technology, environmental protection, electrochemistry, membranes, sensors, optical devices, etc.