TREATMENT OF WATER-SOLUBLE DYES USING DIFFERENT PHYSICOCHEMICAL METHODS

Abstract

Water quality is crucial for human welfare, yet industrial activities continue to contaminate freshwater sources with toxic dyes, adversely affecting soil, crops, aquatic life, and human health.This thesis investigates the treatment of dye-contaminated wastewater through various methods, focusing on adsorption, photocatalysis, and electrochemical degradation.Initially, gypsum is explored as an adsorbent for the removal of Chlorazol Yellow, an anionic dye, demonstrating high efficiency due to its positive charge and affinity for anionic molecules.The second phase utilizes amine-modified tannin gel to target cationic dyes such as Brilliant Green, highlighting the importance of developing cost-effective, natural adsorbents.The third section addresses photocatalytic degradation using tri-metal doped TiO2 to enhance visible light absorption, thereby maximizing sunlight utilization for dye degradation.Finally, an electrochemical approach employing a Pb-modified stainless steel electrode is proposed for rapid dye degradation, emphasizing the need for efficient, time-sensitive treatment methods.Collectively, this research presents a comprehensive exploration of innovative strategies for managing dye effluents, contributing to environmental sustainability and public health.