Exploring the Potential and Sustainable Role of Agricultural Waste as Adsorbent for Defluoridation of Water: A Comprehensive Review
Journal
SSRN
ISSN
15565068
Date Issued
2023-09-05
Author(s)
Das, Koyeli
Sukul, Uttara
Chen, Jung-Sheng
Sharma, Raju Kumar
Banerjee, Pritam
Dey, Gobinda
Taharia Md.
Wijaya, Christian Julius
Lee, Cheng-I
Nuong, Nguyen Hoang Kim
Chen, Chien-Yen
Abstract
Fluoride contamination in groundwater beyond acceptable levels has affected millions of people globally, leading to the development of “Fluorosis” through long-term consumption. It is crucial to reduce fluoride concentration in drinking water to meet safety standards. While various defluoridation techniques exist, they often have drawbacks. Biosorption, a simple, affordable and eco-friendly method, has gained preference for defluoridation. Despite its promising potential, limited commercialization emphasizes the necessity for further research in this area. This review article comprehensively examines the defluoridation potential of agro-based adsorbents covering their specific chemical composition and preparation pathways. It provides a detailed discussion on factors influencing fluoride biosorption and provides a detailed exploration of adsorption isotherm and adsorption kinetic models to understand the nature of adsorption. Furthermore, the commercial viability is assessed through regeneration potential and cost analysis of these agro-adsorbents, aiming to facilitate scaling up the process. It highlights the adsorption mechanism involved in the biosorption process and addresses constraints to large-scale application, offering recommendations to overcome these challenges. This review article offers readers a clear understanding of agro-adsorbents, their optimized conditions for improved performance, and a deeper insight into the fluoride biosorption mechanism.
Subjects
Adsorption mechanism
Agricultural waste
Bio-sorption
Cost analysis
Defluoridation
Regeneration
SDGs
Publisher
SSRN
Type
preprint