Recent advances in the preparation and modification of eco-friendly zeolite-based biocomposites for dye adsorption
Authors :- Parmar, M.; Darban, Z.; Bandyopadhyay, M.; Gaur, R.; Shahabuddin, S.
Publication :- Engineered Biocomposites for Dye Adsorption, (Elsevier), 2025
An exponential growth in industrialization and globalization leads to various hazardous contaminants being dumped directly into the environment causing serious health problems and risking the environment’s long-term sustainability. Among the various pollutants, dyes are the major contaminants present in wastewater. Dye, an organic molecule, is used in various industries such as food, textile, and paper to impart color. After use, an uncontrolled release of dyes in wastewater without any treatment causes serious health and environmental hazards. Therefore it becomes essential to develop an eco-friendly, sustainable, and a low-cost adsorbent material for dye removal. Zeolite-based biocomposite, an eco-friendly adsorbent, is preferred due to its sustainability and nontoxic behavior. It consists of two or more distinct materials, one being zeolite and the other one derived from natural resources. Incorporating zeolite into biocomposites provides mechanical strength, enhanced electrostatic attraction, and several other advantageous properties for dye adsorption. Zeolites are low-cost, porous, inorganic aluminosilicate adsorbent materials consisting of intercrystallite cage-like structures. It has some excellent properties such as a negative charge framework, large surface area, porous structure, acidic nature, shape selectivity, and thermal stability. Several zeolite-based biocomposites membranes, films, and beads can be prepared and modified to enhance dye adsorption. Zeolite-based biocomposites can be an excellent material for dye adsorption, having several advantages of nontoxicity, sustainability, low cost, biodegradability, etc. Hence, this chapter reviews the recent trends in the preparation and modifications associated with zeolite-based biocomposites for dye removal.