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Evaluation of Agricultural Soil-Improving Zeolite for Improving Irrigation Water Quality

Authors :
Dámaris Núñez-Gómez
Pilar Legua
Vicente Lidón
Agustín Conesa
Juan José Martínez-Nicolás
Pablo Melgarejo
Source :
Applied Sciences, Vol 14, Iss 1, p 418 (2024)
Publication Year :
2024
Publisher :
MDPI AG, 2024.

Abstract

With a progressively decreasing availability of water for irrigation, the utilization of lower agronomic quality water sources is becoming more prevalent. Compounds such as sodium and boron, due to their impact on crop development and production, are gaining significance in these water sources. Finding novel methods to immobilize these compounds in irrigation water is a top priority in the global agricultural sector. This study focused on exploring the potential of natural zeolite, commonly used as a soil improver and as a sorbent for sodium and boron in natural agricultural waters. The zeolite exhibited favorable properties, including a surface area of 40 m2/g and a cation-exchange capacity of 1.8 mg/g. Using a central composite factorial design, the zeolite’s capacity to remove sodium and boron from irrigation water was investigated. The results demonstrated significant efficiency in boron removal, while sodium removal was limited, with occasional desorption episodes. Response surface analysis revealed optimal conditions for the removal of each cation. Additionally, adsorption kinetics and pH effects were explored, emphasizing the influence on sodium sorption. Kinetic models were applied, and the pseudo-first-order model proved suitable for describing the sorption kinetics. These findings enhance our understanding of zeolite efficacy in irrigation water purification, emphasizing the complexity of cation interactions in “complex” solutions.

Details

Language :
English
ISSN :
20763417
Volume :
14
Issue :
1
Database :
Directory of Open Access Journals
Journal :
Applied Sciences
Publication Type :
Academic Journal
Accession number :
edsdoj.8d270ff5fb174d0c802bd7bd4d1d8640
Document Type :
article
Full Text :
https://doi.org/10.3390/app14010418