水凝胶在去除工业污染中的应用:从水溶液中去除有毒染料的吸附特性

Q3 Agricultural and Biological Sciences caspian journal of environmental sciences Pub Date : 2021-09-03 DOI:10.22124/CJES.2021.4966
Layth S. Jasim, Aseel M. Aljeboree
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引用次数: 2

摘要

各种有机和无机污染物对水资源的污染是当今时代最大的挑战之一。这些感染严重威胁着人类健康和动植物的生命。为了最大限度地减少污染水的有害影响,基于技术的智能处理方法对于可持续的饮用水设备是必要的。研究了(AAC-co-AM)-g-MCC水凝胶对水溶液中染料甲基蜗壳MV的去除率。通过红外光谱、热重分析和紫外可见光谱对合成的(AAC-co-AM)-g-MCC水凝胶进行了表征。实验研究了pH溶液、染料初始浓度、温度溶液等因素对染料去除率的影响。接触时间在120分钟内完成。数据显示,0.08g(AAC-co-AM)-g-MCC水凝胶的量显示出对染料的最大去除百分比能力(100mg L-1)。MV染料在pH 6.2时达到最大吸附量。进一步证明,(AAC-co-AM)-g-MCC水凝胶对MV染料的吸附遵循Langmuir等温线,而动力学研究表明,每种吸附方法都是拟二阶吸附。确定了焓(∆Ho)、自由能变化(∆Go)和熵(∆So)等热力学因素,∆Go的负值表明,在整个温度值下,去除方法是自发的。此外,∆Ho的值表明了去除方法的吸热性质。
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Hydrogels in the removal of industrial pollution: Adsorption characteristics for the removal of a toxic dye from aqueous solutions
Pollution of water resources with various organic and inorganic pollutants is one of the biggest challenges of the present age. These infections seriously threaten human health and the lives of plants and animals. To minimize the mischievous effects of polluted water, technology-based smart treatment methods are necessary for sustainable equipping of drinking water. Application of (AAC-co-AM)-g-MCC hydrogels for the percentage removal of dye Methyl volute MV, from aqueous solutions have been studied. The synthesized (AAC-co-AM)-g-MCC hydrogels was described via FTIR, Thermogravimetric analysis (TGA), and UV-visible spectroscopy. The experiments held out in batch method effect of the factor like the solution of pH, initial concentration dye, and solution of temperature on the removal percentage of dye was studied. Contact time was done in 120 min. The data appear that an amount of 0.08 g (AAC-co-AM)-g-MCC hydrogels showed maximum removal percentage capacity of dye (100 mg L-1). Maximum adsorption of MV dye was attained at pH 6.2.  It was further proven the adsorption dye onto (AAC-co-AM)-g-MCC hydrogels followed the isotherm Langmuir while the kinetics studies detect that each adsorption method was pseudo-second-order. The thermodynamic factors like enthalpy (∆Ho), change in free energy (∆Go), and entropy (∆So) were determined, and the values negative of ∆Go indicated that the method of removal was spontaneous at wholly values of temperatures. Further, the values of ∆Ho indicated the endothermic nature of the method of removal.
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caspian journal of environmental sciences
caspian journal of environmental sciences Environmental Science-Environmental Science (all)
CiteScore
2.30
自引率
0.00%
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0
审稿时长
5 weeks
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