通过磷酸活化椰壳碳对罗丹明 B、孔雀石绿和亚甲蓝的吸附--平衡和动力学。

IF 3.4 4区 环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES
Fadina Amran, Tivya Sarawanan, Yau Kang Qi, Arifah Azmi, Agus Arsad, Muhammad Abbas Ahmad Zaini
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引用次数: 0

摘要

本研究旨在评估磷酸活性椰壳碳对不同阳离子染料的去除效果。对活性炭的表面官能团、热分解曲线、表面形态和纹理特性进行了表征。活性炭的比表面积为 1,221 m2/g,介孔率为 100%。在分子基础上,活性炭吸附孔雀石绿、亚甲基蓝和罗丹明 B 的最大能力分别为 1.52 mmol/g、0.80 mmol/g 和 0.58 mmol/g。这间接表明活性炭对孔雀石绿具有选择性,并且由于染料分子的立体阻碍而表现出不同的行为。所有平衡数据都符合朗缪尔模型,而随着浓度的增加,动力学数据则与伪二阶模型密切拟合。总之,与亚甲基蓝和罗丹明 B 相比,椰壳活性炭去除孔雀石绿的效果更好。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Coconut shell carbon via phosphoric acid activation for rhodamine B, malachite green, and methylene blue adsorption - equilibrium and kinetics.

This study was aimed at evaluating the removal of different cationic dyes onto phosphoric acid-activated coconut shell carbon. The activated carbon was characterized for surface functional groups, thermal decomposition profiles, surface morphology, and textural properties. The specific area was recorded as 1,221 m2/g with 100% mesoporosity. On molecular basis, the activated carbon adsorbs malachite green, methylene blue, and rhodamine B at maximum capacities of 1.52 mmol/g, 0.80 mmol/g, and 0.58 mmol/g, respectively. It indirectly implies the selectivity of activated carbon toward malachite green, and behaves differently due to steric hindrance of dye molecules. All equilibrium data obeyed Langmuir model, while the kinetic data are closely fitted to pseudo-second order model as concentration increases. To conclude, coconut shell activated carbon is more effective to remove malachite green compared to methylene blue and rhodamine B.

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来源期刊
International Journal of Phytoremediation
International Journal of Phytoremediation 环境科学-环境科学
CiteScore
7.60
自引率
5.40%
发文量
145
审稿时长
3.4 months
期刊介绍: The International Journal of Phytoremediation (IJP) is the first journal devoted to the publication of laboratory and field research describing the use of plant systems to solve environmental problems by enabling the remediation of soil, water, and air quality and by restoring ecosystem services in managed landscapes. Traditional phytoremediation has largely focused on soil and groundwater clean-up of hazardous contaminants. Phytotechnology expands this umbrella to include many of the natural resource management challenges we face in cities, on farms, and other landscapes more integrated with daily public activities. Wetlands that treat wastewater, rain gardens that treat stormwater, poplar tree plantings that contain pollutants, urban tree canopies that treat air pollution, and specialized plants that treat decommissioned mine sites are just a few examples of phytotechnologies.
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