Removal of Reactive Red 141 and Disperse Red 13 Dyes from Aqueous Solutions Using Different Coagulants: An Optimization and Comparison Study

Authors : Ahmed ALBAHNASAWİ

Pages : 1269-1281

Doi:10.29130/dubited.1183818

View : 45 | Download : 64

Publication Date : 2023-07-31

Article Type : Research Paper

Abstract :This study investigated the performance of different coagulants for the removal of different dye types from synthetic dye solutions. The ability to use each of the following: aluminium sulphate insert ignore into journalissuearticles values(Al2insert ignore into journalissuearticles values(SO4);3, aluminium chloride insert ignore into journalissuearticles values(AlCl3);, and ferric chloride insert ignore into journalissuearticles values(FeCl3); as chemical coagulants were examined for removing reactive red 141 insert ignore into journalissuearticles values(RR 141); dye and disperse red 13 insert ignore into journalissuearticles values(DR 13); from dye solution. Coagulation studies determined the optimum pH, mixing time, coagulant dosages, and initial dye concentrations. The maximum efficiency for removing RR 141 was 65.7% by aluminium chloride at the operation condition of pH 8, mixing time 10 min, and dye concentration of 100 mg/L. In contrast, under the same conditions, ferric chloride could remove more than 98% of DR 13. Since the disperse dye type has better colour removal, the maximum volume of sludge was 0.3 kg/m3 which was produced when FeCl3 was used as a coagulant. The results demonstrated that coagulation is a promising technology for dye removal, especially for dispersed dyes as it has some characteristics such as colloidal dispersion and very low water solubility.
Keywords : Tekstil atıksuları, Kimyasal Koagülasyon, Reaktif Boya, Dispers Boya