The Removal Of Methylene Blue And Cod By Coagulation Using Cactus

Résumé: In this study, we considered a cationic dye namely methylene blue, taken as a model pollutant in order to evaluate the performance of the prickly pear “cactus”. In this context, the use of biomaterials which are both natural and eco-friendly, respectful of the environment less expensive could be a promising solution to be considered, possible to be implemented in the future, for the treatment of wastewater in containers dyes. The treatment process was conducted in conventional jar test. The FTIR spectrum values endorse the existence of various functional groups. The leverage of variables such as coagulant dose and initial pH were investigated in terms of dye and chemical oxygen demand (COD) removal efficiencies. The optimized value of the above-mentioned variables were examined and the values are 2 g of cactus to treat 1L of synthetic effluent under basic pH (pH=10). The maximum removal efficiencies were identified for initial concentration effluent of 50 mg.L-1, were 57 % and 45 % of methylene blue and COD removal efficiencies, respectively. The adsorption and bridging mechanism played a major role rather than the hydrolysis process in methylene blue/cactus system.

Publié dans la revue: Algerian Journal of Engineering Research