Optimizing Methylene Blue Removal from Textile Effluents: Comparative Study of Adsorption Efficiency Using Raw and Activated Carbon Derived from Gmelina Wood Wastes  

作　　者：Martin Nduka Nwanekezie Samuel Enoroghoe Ogbeide Nwosu Cynthia Chidiebere Godspower O. Sebe Martin Nduka Nwanekezie;Samuel Enoroghoe Ogbeide;Nwosu Cynthia Chidiebere;Godspower O. Sebe(Department of Chemical Engineering, Chukwuemeka Odumegwu Ojukwu University, Uli, Nigeria;Department of Chemical Engineering, University of Benin, Benin City, Nigeria;Department of Biomedical, Chemistry & Chemical Engineering, University of New Haven, West Haven, Connecticut, USA)

机构地区：[1]Department of Chemical Engineering, Chukwuemeka Odumegwu Ojukwu University, Uli, Nigeria [2]Department of Chemical Engineering, University of Benin, Benin City, Nigeria [3]Department of Biomedical, Chemistry & Chemical Engineering, University of New Haven, West Haven, Connecticut, USA

出　　处：《American Journal of Analytical Chemistry》2023年第9期362-377,共16页美国分析化学（英文）

摘　　要：This research investigates the efficacy of activated Gmelina Wood Sawdust (GWS) as an adsorbent for the removal of methylene blue (MB) dye from aqueous solutions, in comparison with raw GWS. The study employs laboratory experiments to assess the percentage of dye removal across various temperature and pH conditions. The adsorption process is scrutinized under different parameters, encompassing contact time, initial dye concentration, adsorbent dosage, temperature, and pH. Results demonstrate that activated GWS surpasses its raw counterpart, showcasing superior MB dye removal percentages. Extended contact times increased initial dye concentrations, and higher adsorbent dosages contribute positively to removal efficiency, while temperature exhibits an inverse relationship with dye removal. Optimal adsorption occurs at a pH of 7.0, aligning with the adsorbent’s zero-point charge (pHzpc), underscoring the role of surface charge in the adsorption process. This study underscores the potential of activated GWS as an economical and promising adsorbent material for addressing pollutants. Furthermore, the utilization of activated carbon derived from abundant agricultural waste underscores an environmentally conscious approach to adsorption applications. The ability to tailor the size and properties of activated carbon particles opens avenues for optimizing adsorption capabilities, thereby presenting opportunities for enhanced water treatment solutions.This research investigates the efficacy of activated Gmelina Wood Sawdust (GWS) as an adsorbent for the removal of methylene blue (MB) dye from aqueous solutions, in comparison with raw GWS. The study employs laboratory experiments to assess the percentage of dye removal across various temperature and pH conditions. The adsorption process is scrutinized under different parameters, encompassing contact time, initial dye concentration, adsorbent dosage, temperature, and pH. Results demonstrate that activated GWS surpasses its raw counterpart, showcasing superior MB dye removal percentages. Extended contact times increased initial dye concentrations, and higher adsorbent dosages contribute positively to removal efficiency, while temperature exhibits an inverse relationship with dye removal. Optimal adsorption occurs at a pH of 7.0, aligning with the adsorbent’s zero-point charge (pHzpc), underscoring the role of surface charge in the adsorption process. This study underscores the potential of activated GWS as an economical and promising adsorbent material for addressing pollutants. Furthermore, the utilization of activated carbon derived from abundant agricultural waste underscores an environmentally conscious approach to adsorption applications. The ability to tailor the size and properties of activated carbon particles opens avenues for optimizing adsorption capabilities, thereby presenting opportunities for enhanced water treatment solutions.

关 键 词：Gmelina Wood Gmelina Wood Sawdust Activated Carbon ADSORPTION Methylene Blue (MB) pH (hydrogen Ion Index) SEM Examinatio 

分 类 号：O64[理学—物理化学]