Nghiên cứu khả năng hấp phụ xanh methylen của tro bay biến tính bằng phương pháp nung chảy thủy nhiệt với NAOH rắn
Abstract
Due to high surface area, porous structure, small particle size and rich mineral composition, fly ash
has been widely studied as a potential adsorbent material (VLHP), which exhibits a significant capacity to adsorb pollutants from the environment and can be effectively use in wastewater treatment. However, current research on using fly ash for methylene blue (MB) removal from wastewater is limited. Therefore, this study aimed to evaluate the MB adsorption capacity of modified fly ash (TBBT) with 96% solid NaOH at 600oC for 1 hour. The static adsorption study has been conducted on the adsorption of MB solution of different concentrations on TBBT at varying pH, contact time and initial concentration of dye solution. Research results show that the adsorption capacity of TBBT is much greater than the original raw fly ash sample (TB); the equilibrium time of TBBT is about 90 minutes; the optimal pH value is with adsorption efficiency of 98.53% and MB concentration is 100 mg/l. The highest adsorption capacity is 16.87 mg/g. Therefore, using TBBT for MB adsorption can not only solve environmental problems, utilizing waste resources but also bring many technical and economic benefits, contributing to the sustainable development of related industries.
