Salt Removal by Different Natural Adsorbents: Mechanisms, Performance, and Future Prospects

Arun Kumar Gupta

Abstract: Salt contamination of freshwater resources has emerged as a major environmental challenge worldwide. Conventional desalination techniques such as reverse osmosis and ion exchange, while effective, are energy-intensive and costly. Adsorption using natural materials presents a sustainable and low-cost alternative for salt removal. This review summarizes recent progress in the use of various natural adsorbents, including clay minerals, biochar, agricultural wastes, zeolites, and chitosan-based materials, for desalination and ion removal. The mechanisms of adsorption, key physicochemical parameters, and comparative efficiencies are discussed. Additionally, challenges related to regeneration, selectivity, and scale-up are highlighted, followed by perspectives on future research directions.

Keywords: Natural adsorbents, Salt removal, Desalination, Biochar, Zeolite, Water treatment

How to Cite?: Arun Kumar Gupta, "Salt Removal by Different Natural Adsorbents: Mechanisms, Performance, and Future Prospects", Volume 7 Issue 5, May 2018, International Journal of Science and Research (IJSR), Pages: 1883-1886, https://www.ijsr.net/getabstract.php?paperid=SR18525173235, DOI: https://dx.doi.org/10.21275/SR18525173235