本文详细介绍了去除亮绿(BG)的可行性研究,一种在营养食品工业中用作副产品的低成本香菜种子通过吸附从水溶液中产生的诱变染料。该研究包括对影响吸附过程的参数的分析。已确定的变量包括pH值,染料浓度,工艺温度,吸附剂用量,和吸附剂的粒度。为了获得有关吸附过程的信息,并在实验平衡上设计吸附系统的机理,10个等温线模型,即,朗缪尔,Freundlich,Jovanovic,Dubinin-Radushkevich,sips,Redlich-Peterson,托特,Vieth-Sladek,Brouers-Sotolongo,并应用了Radke-Prausnitz.发现实验吸附能力,qe,大约是110毫克克-1。根据Dubinin-Radushkevich等温线的预测,结果的最大吸附量为136.17mgg-1。扩散膜模型,Dumwald-Wagner和Weber-Morris模型,以及伪一阶和二阶模型,用于确定吸附动力学。已经意识到吸附动力学数据适合于伪二阶模型。具有降低的焓变化的热力学分析表明物理过程。热力学参数ΔG0,ΔH0和ΔS0的值证明了吸热和几乎自发的吸附过程。ΔH0的小估值指定该过程是物理的。使用FTIR光谱和SEM成像来确认BG染料已经吸附在吸附剂表面上。该研究得出结论,NICSS是一种从废水溶液中提取BG染料的有效吸附剂,提供了许多染料和吸附剂相互作用可能性的见解,并表明该过程可以扩展以适应循环经济的概念。
已经尝试通过设计和执行实验室规模的实验来将循环经济的概念联系起来。以下亮点将证明作者采用的新方法是正确的。实验是有意设计的,以适应循环经济的概念。NICSS的使用,消费的营养食品工业,没有饲料,肥料,或燃料价值适合可持续性概念。修复过程中的“废物”的再利用取代了循环经济中的“报废”概念。
The article details a feasibility study of removing Brilliant Green (BG), a mutagenic dye from an aqueous solution by adsorption using low-cost coriander seed spent as a by-product in the nutraceutical industry. The study includes an analysis of the parameters that affect the adsorption process. The variables that have been identified include pH, dye concentration, process temperature, adsorbent amount, and particle size of the adsorbent. To obtain information on the adsorption process and to design the mechanism of the adsorption system on experimental equilibrium, 10 isotherm models, namely, Langmuir, Freundlich, Jovanovic, Dubinin-Radushkevich, Sips, Redlich-Peterson, Toth, Vieth-Sladek, Brouers-Sotolongo, and Radke-Prausnitz were applied. It was discovered that the experimental adsorption capacity, qe, was roughly 110 mg g-1. The result has a maximum adsorption of 136.17 mg g-1 as predicted by Dubinin-Radushkevich isotherm. Diffusion film models, Dumwald-Wagner and Weber-Morris models, and pseudo-first- and second-order models, were used to determine the adsorption kinetics. It was realized that the adsorption kinetics data fit into a pseudo-second-order model. Thermodynamic analysis with a reduced enthalpy change suggests a physical process. The values of the thermodynamic parameters ΔG0, ΔH0, and ΔS0 demonstrated an endothermic and nearly spontaneous process of adsorption. The small valuation of ΔH0 specifies that the process is physical. FTIR spectroscopy and SEM imaging were used to confirm that the BG dye had been adsorbing on the adsorbent surface. The study concludes that NICSS is an effective adsorbent to extract BG dye from wastewater solutions, offers insights into numerous dye and adsorbent interaction possibilities and indicates that the process can be scaled to fit into the concept of circular economy.
An attempt has been made to link the concept of circular economy through design and execution of the experiments in the laboratory scale. The following highlights will justify the newer approach adopted by the authors.The experiments are designed by intention to suit the concept of circular economy.The use of NICSS, a nutraceutical industrial spent, which has no feed, fertilizer, or fuel value suits the sustainability concept.The reuse of “waste” from the remediation process replaces the “end-of-life” concept in circular economy.