What is it about?
Industrial effluents are usually one of the major industries polluting the environment and surface water. Factors affecting dye adsorption such as pH, temperature, initial dye concentration, and adsorbent amount are also presented. The obtained results revealed that more than 80% of the dye adsorption on the surface of adsorbents are endothermic processes and more than 95% of the processes obey the pseudo-second-order kinetic model
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Why is it important?
In recent years, adsorption processes have shown effective results on water and wastewater treatment technology in different industries. In these techniques, a series of natural or synthesized adsorbents have been used to treat contaminants such as metals, dyes, and pharmaceutical products in solutions .These adsorbents can be regenerated or consumed after the adsorption process. Synthetic dyes are widely used in many advanced industries such as various textiles, paper, leather, food process, plastics, cosmetics, printing, and industrial dyes.
Perspectives
In this study, a series of adsorbents such as industrial solids, agricultural by-products, activated carbon, activated carbon- based biomasses, nano-adsorbents, mineral oxides, and mineral soil are reviewed to remove dye or contaminants from aqueous solutions. Adsorbents should be available, cost-effective, porous, recyclable, and have many active sites on their structure. In this way, future studies could focus on the adsorbents with good adsorption/desorption performance, recyclability, and cost-effectiveness. Furthermore, finding cost-effective strategies in the fields of storage and reusability of used adsorbents are other important issues for the future studies. In this way, the safe and economical disposal/reuse of used adsorbents should be considered in future investigations. It is possible to use raw materials and refining materials instead of expensive commercial activated carbon to remove dye from aqueous solutions. In this review study, a large number of articles
Dr. Ali Soltani
Islamic Azad University Yasooj Branch
Read the Original
This page is a summary of: A review on adsorbent parameters for removal of dye products from industrial wastewater, Water Quality Research Journal, October 2021, IWA Publishing,
DOI: 10.2166/wqrj.2021.023.
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