Adsorptive removal of methylene blue as case study of adsorption phenomenon by ceramic filters: experimental study and kinetic modeling

IF 2.7 Q2 MULTIDISCIPLINARY SCIENCES
Akuemaho Virgile Onésime Akowanou , Hontonho Espérance Justine Deguenon , Sena Peace Hounkpè , Mohamed Moukorab Arêmou Daouda , Martin Pépin Aina
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引用次数: 0

Abstract

Ceramic filters are widely recognized for their effectiveness in removing microorganisms and pathogens from drinking water. However, their ability to eliminate chemical pollutants through adsorption remains underexplored. This study investigates the adsorption of methylene blue (MB) onto ceramic filters made from sintered clay materials. It is a new and detailed experimental investigation of adsorption phenomena in ceramic pot filtration, focusing on the removal of methylene blue as a model pollutant. Adsorption kinetics were examined under varying conditions, including contact time, pH, adsorbent dosage, and agitation speed. The adsorption process followed a pseudo-second-order kinetic model, indicating a strong interaction between the adsorbents and the adsorbate. Isothermal adsorption experiments revealed that the Langmuir model best described the adsorption behavior, with maximum adsorption capacities of 267.5 mg/g, 258.5 mg/g, and 252.5 mg/g for the three clay-based materials studied. This suggests that the adsorption of methylene blue occurs as a monolayer on a homogeneous surface with finite and energetically equivalent sites, highlighting the potential for optimizing surface properties to maximize adsorption efficiency. These findings confirm the significant role of adsorption on ceramic pot filter in pollutant removal by clay based ceramic filters and highlight the potential of optimizing material properties to enhance water treatment efficiency.
陶瓷过滤器吸附去除亚甲基蓝:实验研究和动力学模型
陶瓷过滤器在去除饮用水中的微生物和病原体方面的有效性得到了广泛的认可。然而,它们通过吸附消除化学污染物的能力仍未得到充分研究。研究了烧结粘土材料制备的陶瓷过滤器对亚甲基蓝的吸附作用。以亚甲基蓝为模型污染物,对陶瓷锅过滤中的吸附现象进行了较为详细的实验研究。考察了不同条件下的吸附动力学,包括接触时间、pH、吸附剂用量和搅拌速度。吸附过程符合准二级动力学模型,表明吸附剂与吸附物之间存在较强的相互作用。等温吸附实验表明,Langmuir模型最能描述吸附行为,三种黏土基材料的最大吸附量分别为267.5 mg/g、258.5 mg/g和252.5 mg/g。这表明亚甲基蓝的吸附在具有有限能量等效位点的均匀表面上以单层形式发生,突出了优化表面性质以最大化吸附效率的潜力。这些研究结果证实了陶瓷罐过滤器在粘土基陶瓷过滤器去除污染物中的重要作用,并强调了优化材料性能以提高水处理效率的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Scientific African
Scientific African Multidisciplinary-Multidisciplinary
CiteScore
5.60
自引率
3.40%
发文量
332
审稿时长
10 weeks
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