International Science Community Association Research Journal of Chemical Sciences 2231-606X 13 1 2023 03 18 Modeling and optimization of methyl violet 2B removal on activated carbon based neem hulls using Response Surface Methodology (RSM) 35 45 EN CAKPO Arthur Romuald 1 Laboratoire de Chimie Inorganique et de l’Environnement (LaCIE), Faculté des Sciences et Techniques (FAST), Université d’Abomey - Calavi BP : 4521 Cotonou, République du Bénin AKODEDJROHOUN Igor 2 Laboratoire de Chimie Inorganique et de l’Environnement (LaCIE), Faculté des Sciences et Techniques (FAST), Université d’Abomey - Calavi BP : 4521 Cotonou, République du Bénin GOUDJO Ferdinand 3 Laboratoire de Chimie Inorganique et de l’Environnement (LaCIE), Faculté des Sciences et Techniques (FAST), Université d’Abomey - Calavi BP : 4521 Cotonou, République du Bénin SAGBO Etienne 4 Laboratoire de Chimie Inorganique et de l’Environnement (LaCIE), Faculté des Sciences et Techniques (FAST), Université d’Abomey - Calavi BP : 4521 Cotonou, République du Bénin SOUMANOU Mohamed M. 5 Laboratoire d’Etude et de Recherche en Chimie Appliquée (LERCA), Ecole polytechnique d’Abomey-Calavi (EPAC), Université d’Abomey- Calavi AYOLA Désiré PANEWAI 1 Laboratoire Kaba de Recherche en Chimie et Applications (LaKReCA), ENS- Natitingou, Bénin and Laboratoire de Chimie Inorganique et de l’Environnement (LaCIE), Faculté des Sciences et Techniques (FAST), Université d’Abomey-Calavi, 01 BP 526 Cotonou, Bénin CHOUTI Waris Kéwouyèmi 2 Laboratoire de Chimie Inorganique et de l’Environnement (LaCIE), Faculté des Sciences et Techniques (FAST), Université d’Abomey-Calavi, 01 BP 526 Cotonou, Bénin DEDJIHO Comlan Achille 3 Laboratoire de Chimie Inorganique et de l’Environnement (LaCIE), Faculté des Sciences et Techniques (FAST), Université d’Abomey-Calavi, 01 BP 526 Cotonou, Bénin and Laboratoire d’Hydrologie Appliquée (LHA), Institut National de l’Eau, Université d’Abomey-Calavi, 01 BP 526 Cotonou, Bénin AMLAN Paulin 4 Laboratoire de Chimie Inorganique et de l’Environnement (LaCIE), Faculté des Sciences et Techniques (FAST), Université d’Abomey-Calavi, 01 BP 526 Cotonou, Bénin TOMETIN Lyde 5 Laboratoire Kaba de Recherche en Chimie et Applications (LaKReCA), ENS- Natitingou, Bénin CHITOU Nafiou E. 6 Laboratoire de Chimie Inorganique et de l’Environnement (LaCIE), Faculté des Sciences et Techniques (FAST), Université d’Abomey-Calavi, 01 BP 526 Cotonou, Bénin Mahamane Abdoulkadri Ayouba 1 Department of Chemistry, Faculty of Science and Technology, Abdou Moumouni University of Niamey, Niger oumarou Abdoul-Fataou Moumouni 2 Department of Chemistry, Faculty of Science and Technology, Abdou Moumouni University of Niamey, Niger Adamou Hassane 3 Department of Chemistry, Faculty of Science and Technology, Abdou Moumouni University of Niamey, Niger Sahirou Bachir Mijitaba 4 Department of Chemistry, Faculty of Science and Technology, Abdou Moumouni University of Niamey, Niger Adamou Rabani 5 Department of Chemistry, Faculty of Science and Technology, Abdou Moumouni University of Niamey, Niger Ferdoush Jannatul 1 Department of Pharmacology, BGC Trust Medical College, Chattogram, Bangladesh Jeenia FatihaTasmin 2 Department of Pharmacology & Therapeutics, Chattogram International Medical College & Hospital, Chattogram, Bangladesh Johora Fatema 3 Department of Pharmacology & Therapeutics, Army Medical College Bogura, Bogura, Bangladesh Munira Hamida Khalil 4 National Technical Advisor-clinical services, MBBS, ECTAD-FAO, Bangladesh Hossain Sharif Mohammad Towfiq 5 Department of Endocrine and Metabolism, Chattogram Maa-O-Shishu Hospital Medical College, Chattogram, Bangladesh Biswas Rajat Sanker Roy 6 Department of Medicine, Chattogram Maa-O-Shishu Hospital Medical College, Chattogram, Bangladesh Islam MdNurul 7 School of Information Management, Nanjing University, Jiangsu province, China Mahboob Sabiha 8 CMH Bogura, Chattogram, Bangladesh Datta Arup Kunar 9 Department of Pediatrics, BGC Trust Medical College, Chattogram, Bangladesh DIOP Adama 1 Laboratory of Water, Energy, Environnemental and Industrial Processes (LE3PI), Cheikh Anta Diop University (UCAD), Ecole Supérieure Polytechnique (ESP), B.P. 5085 Dakar-Fann, Senegal FAYE Mamadou 2 Laboratory of Water, Energy, Environnemental and Industrial Processes (LE3PI), Cheikh Anta Diop University (UCAD), Ecole Supérieure Polytechnique (ESP), B.P. 5085 Dakar-Fann, Senegal and National Polytechnic Institute (INP), National School of Chemical and Technological Arts Engineers (ENSIACET, UMR 1010, Laboratory of Agro-Industrial Chemistry, BP 44362 - 31030 Toulouse Cedex 4, France DIEDHIOU Djibril 3 Laboratory of Water, Energy, Environnemental and Industrial Processes (LE3PI), Cheikh Anta Diop University (UCAD), Ecole Supérieure Polytechnique (ESP), B.P. 5085 Dakar-Fann, Senegal and University of Sine Saloum El Hadji Ibrahima Niass (USSEIN), UFR, Fundamental and Engineering Sciences (UF-SFI), BP 55 Kaolack, Senegal Mar-DIOP Codou Gueye 4 Amadou Makhtar MBOW University (UAM), B.P. 45 927 Dakar-Nafa-VDN, Dakar, Senegal > Research Paper 2022 12 7 2023 03 18 The direct discharge of industrial effluents loaded with dyes into nature constitutes a major environmental pollution problem. Thus, the treatment of these wastewaters is now a necessity to protect of people and the environment. The aim of this study was to determine the optimal operating conditions of the adsorption removal of Methyl Violet (MV) in aqueous solution. The activated carbon adsorbent that used in this study is chemically prepared from neem seed hulls. The Surface Response Methodology (SRM), was used for the optimisation and modelling of the adsorption fixation process of MV on the prepared activated carbon elaborated adsorbent. The effects of the operating parameters such as the initial concentration of MV in the solution (40 - 80mg.L-1), the amount of activated carbon adsorbent (1-2g.L-1), the contact time (50-100 min) and the initial pH of the solution (4 - 8) have been studied. The results for ANOVA analysis has showed that the quadratic model is the best fitting model to describe the fixation of MV on the activated carbon the studied adsorbent. The results has also showed that the adsorption of MV on activated carbon the elaborated adsorbent is strongly influenced by the studied parameters. Indeed, the dose of an activated carbon gets the most significant effect on dye removal. The optimal conditions of MV adsorption correspond to an initial MV concentration of 40.75mg.g-1, an activated carbon dose of 1.78g.L-1, a pH of 4.06 and a adsorption time of 99.40 min and allow a MV removal yield of 99.53 %. Therefore, the MSR can be used to model the removal of MV as a function of the parameters studied and to determine the optimal operating conditions for MV fixation on neem seed shell activated carbon. This study has showed that an activated carbon based on neem hulls is a credible option for the treatment of industrial effluents loaded with dyes. Copyright@ International Science Community Association