An increasing textile industry has exacerbated the serious problem of dealing with industrial effluent that contains toxic dye molecules. Despite the development of various techniques for adsorbing dyes in wastewater, many researchers have yet to expand a highly efficient technique for the revival of dye molecules from textile waste water. However, adsorption techniques using low cost, eco-friendly, effective adsorbents are extensively used due to their simplicity and good efficiency. A novel approach for the capture of dye molecules using a composite inexpensive activated carbon (AC) adsorbent synthesized from Gulmohar (GM) plant seeds has been proposed in this study. Prepared AC before and after adsorption of Methyl Orange (MO) has been characterized by SEM, EDX and FT-IR. Experimental adsorption data of chosen anionic dyes fits several kinetic and isotherm models. Kinetic studies reveal that a pseudo-second order is the mainly suitable model in the adsorption process. The equilibrium adsorption data of anionic dye show that the system followed the Langmuir adsorption isotherm. In addition, through thermodynamic calculations the negative value of ΔG° and negative value of ΔH° show that the adsorption is a spontaneous and exothermic process. All the above results conclude that the GMAC can be used as an effective absorbent for removing dyes from wastewater.

中文翻译：

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使用由 delonix Regia 种子制备的有效低成本活性炭从水溶液中清除甲基橙染料

日益增长的纺织工业加剧了处理含有有毒染料分子的工业废水的严重问题。尽管开发了各种吸附废水中染料的技术，但许多研究人员尚未开发出一种高效的技术来从纺织废水中恢复染料分子。然而，使用低成本、环保、有效的吸附剂的吸附技术由于其简单性和良好的效率而被广泛使用。本研究提出了一种使用由 Gulmohar (GM) 植物种子合成的复合廉价活性炭 (AC) 吸附剂捕获染料分子的新方法。通过SEM、EDX和FT-IR对甲基橙（MO）吸附前后制备的活性炭进行了表征。所选阴离子染料的实验吸附数据符合几种动力学和等温线模型。动力学研究表明，伪二级是吸附过程中主要合适的模型。阴离子染料的平衡吸附数据表明该体系遵循Langmuir吸附等温线。此外，通过热力学计算，ΔG°为负值和ΔH°为负值表明吸附是自发放热过程。综上所述，GMAC 可以作为一种有效的吸附剂去除废水中的染料。通过热力学计算，ΔG°为负值，ΔH°为负值，表明吸附是自发放热过程。综上所述，GMAC 可以作为一种有效的吸附剂去除废水中的染料。通过热力学计算，ΔG°为负值，ΔH°为负值，表明吸附是自发放热过程。综上所述，GMAC 可以作为一种有效的吸附剂去除废水中的染料。