在现代,随着各个行业的快速发展,能源危机和环境污染问题日益受到重视。工业污染的一个重要来源是印染废水。这种废水通常含有具有芳香结构和偶氮基团的染料,如甲基橙(MO),既有毒又难降解。如果这些染料未经任何处理就被释放到废水流中,它们会对生态平衡和人类健康产生不利影响。因此,确定合适的处理策略以在排放前有效地从废水系统中去除染料是至关重要的。在这项研究中,甲基橙(MO)偶氮染料已从染料污染的废水中去除,第一次,使用一种新型的氨基-乙基羧甲基纤维素交联的两性电解质水凝胶(AECMC)。不同的表征方法,包括FTIR,TGA,和DSC用于表征生成的AECMC化合物。评估吸水率和阳离子交换容量。影响MO阴离子吸附的因素包括MO浓度,吸附pH,温度,时间,吸附剂剂量,和搅拌速度已经进行了调查。此外,通过使用三个模型评估吸附过程的动力学:伪一级,伪二阶,还有Elovich.此外,使用颗粒内扩散和Boyd模型监测吸附过程的机理。此外,使用已建立的模型如Langmuir,Freundlich,和Temkin等温线.已使用Van\'tHoff模型在各种吸附温度下研究了MO吸附过程的热力学特性。研究结果表明,MO吸附过程符合拟二级动力学模型,发现Langmuir等温线模型是适用的,并且自发并表现出吸热特性。总之,开发的新型氨基-乙基羧甲基纤维素交联两性电解质水凝胶(AECMC)连续从受污染的废水中去除MO阴离子染料。
In the modern era, with the rapid growth of various industries, the issues of energy crisis and environmental pollution have garnered increasing attention. One significant source of industrial pollution is printing and dyeing wastewater. This wastewater often contains dyes that have aromatic structures and azo groups, such as Methyl orange (MO), which are both toxic and difficult to degrade. If these dyes are released into the wastewater stream without any treatment, they can have adverse effects on ecological balance and human health. Therefore, it is crucial to identify suitable treatment strategies to efficiently remove dyes from wastewater systems before discharge. In this study, the Methyl orange (MO) azo dye has been removed from dyes-contaminated wastewater, for the first time, using a novel amino-ethyl carboxymethyl cellulose crosslinked ampholyte hydrogel (AECMC). Different characterization methods, including FTIR, TGA, and DSC were used to characterize the generated AECMC compounds. The water absorption and cationic exchange capacities were assessed. Factors affecting the MO anions adsorption including MO concentration, adsorption pH, temperature, time, adsorbent dose, and agitation speed have been investigated. Moreover, the kinetics of the adsorption process was assessed by the use of three models: pseudo-first-order, Pseudo-second-order, and Elovich. Moreover, the mechanism of the adsorption process was monitored using the Intraparticle diffusion and Boyd models. Additionally, the adsorption isotherm was examined using established models such as Langmuir, Freundlich, and Temkin isotherms. The thermodynamic characteristics of the MO adsorption process have been investigated at various adsorption temperatures using the Van\'t Hoff model. The results obtained from the study indicate that the process of MO adsorption adhered to the Pseudo-second-order kinetic model, the Langmuir isotherm model was found to be applicable, and spontaneous and exhibited an endothermic character. In conclusion, the developed novel amino-ethyl carboxymethyl cellulose crosslinked ampholyte hydrogels (AECMC) have successive in the removal of the MO anionic dye from contaminated wastewater.