椰壳废料吸附法去除水溶液中有毒纺织染料:热力学和等温线研究

Q3 Agricultural and Biological Sciences
Amer M. J. Alshamri, Aseel M. Aljeboree, Mohammed B. Alqaragully, A. Alkaim
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引用次数: 3

摘要

本研究以椰壳废料为原料,采用硫酸活化法制备活性炭(椰壳废料)。椰壳废料是一种廉价的材料,具有吸附去除水中有毒纺织染料(亚甲基蓝MB、结晶紫CV和亮蓝BB)的良好效果。在摇床水浴中,测定了接触时间、吸附剂剂量、pH、染料溶液温度、染料初始浓度等不同的理化因素,吸附时间为120分钟。结果表明:在高pH值条件下对MB、CV的吸附有利,而在酸性条件下对亮蓝色BB染料的吸附有利。用吉布斯自由能、熵和焓三种染料对活性炭进行了热力学分析。结果表明,吸附为物理吸附(吸热)。还发现活性炭受Freundlich和Temkin方程的调控。最后,利用场发射扫描电镜(FE-SEM)和傅里叶变换红外光谱(FT-IR)对吸附进行了表征。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Removal of toxic textile dyes from aqueous solution through adsorption onto coconut husk waste: Thermodynamic and isotherm studies
In this research, activated carbon (coconut husk waste) is prepared using sulfuric acid activation from coconut husk waste which is a cheap material that shows agreed scavenging actions by adsorption for eliminating the toxic textile dyes (methylene blue MB, crystal violet CV, as well as Brilliant Blue BB) from the aqueous solutions. In a shaker water bath, different physio-chemical factors like contact time, adsorbent dose, pH, temperature of the dye solution and initial concentration of the dye have been measured and the adsorption time is 120 minutes. The results show that adsorption of MB, CV is favorable at a high pH value, but at acidic pH, the brilliant blue BB dye is favorable. The activated carbon thermodynamic analysis is conducted using three dyes: The Gibbs free energy, entropy and also enthalpy. According to the results, the adsorption is a Physical (endothermic). It is also found that the activated carbon is regulated by the equations of Freundlich and Temkin. Finally, field emission scanning electron microscopy (FE-SEM) and Fourier-transform infrared spectroscopy (FT-IR) have been used to show adsorption.
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来源期刊
caspian journal of environmental sciences
caspian journal of environmental sciences Environmental Science-Environmental Science (all)
CiteScore
2.30
自引率
0.00%
发文量
0
审稿时长
5 weeks
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