Degradation of Dyestuffs from Industrial Effluents using an Ultrasonic Bath in the Presence and Absence of Various Inorganic Salts and H2O2
Md. Monjurul Islam
Department of Applied Chemistry and Chemical Engineering, Faculty of Applied Science and Technology, Islamic University, Kushtia-7003, Bangladesh
Md. Ashifuzzaman
Department of Physics, Government M. M. College, National University, Dhaka-Mymensingh Hwy, Bangladesh
Md. Shamim Reza
Department of Research and Development, ACME Laboratories Ltd. Dhulivita, Dhamrai, Dhaka-1350, Bangladesh
Jerin Alauddin
Department of Applied Chemistry and Chemical Engineering, Faculty of Applied Science and Technology, Islamic University, Kushtia-7003, Bangladesh
Sumon Ganguly
Department of Applied and Environmental Chemistry, University of Chittagong (CU), Chittagong 4331, Bangladesh
B. M. Saifur Rahman
Department of Applied Chemistry and Chemical Engineering, Faculty of Applied Science and Technology, Islamic University, Kushtia-7003, Bangladesh
Most. Shahida Khatun
Department of Applied Chemistry and Chemical Engineering, Faculty of Applied Science and Technology, Islamic University, Kushtia-7003, Bangladesh
Md. Rashidul Islam
Department of Applied Chemistry and Chemical Engineering, Faculty of Applied Science and Technology, Islamic University, Kushtia-7003, Bangladesh
Md. Jahangir Hossain
Department of Chemical Engineering, Faculty of Engineering and Technology, Jessore University of Science and Technology, Jessore-7408, Bangladesh
Md. Helal Uddin *
Department of Applied Chemistry and Chemical Engineering, Faculty of Applied Science and Technology, Islamic University, Kushtia-7003, Bangladesh
*Author to whom correspondence should be addressed.
Abstract
Textile industries consume various dyestuffs for dyeing of fabrics. These dyestuffs are often present in industrial wastewater, have a serious impact on the environment and personal health. This report describes a system developed to degrade the dyestuffs using sonochemical reactions. The degradation of dye molecules in aqueous solution was investigated using 50-60 Hz ultrasonic bath, and all solutions volumes were 50 mL where the concentration of dye solution was 50 mg/L. Experiments were performed at an initial concentration of two types of dye solutions, i.e. Methylene Blue (MB) and Methyl Orange (MO) in absence and presence of inorganic salts (NaCl, Na2CO3, Na2SO4, NaNO3) and catalyst, i.e. H2O2 at room temperature. This research investigated the degradation of dye molecules with an aim of cost-effective method. In sonochemical degradation of dyestuffs in sonicator, high degradation rate for MB was obtained in the presence of additives H2O2 and followed the order: MB+H2O2> MB+ Na2CO3 > MB+Na2SO4> MB + NaCl> MB (0 mM salt & additive) > MB+NaNO3. Whereas, in case of MO, high rate was obtained in the presence of Na2SO4 and then followed the order: MO+Na2SO4> MO + NaNO3> MO+H2O2> MO + NaCl> MO (0 mM salt & additive) > MO+Na2CO3.
Keywords: Methyl orange, methylene blue, sonolysis, inorganic salts, H2O2