Abstract：
Industrial waste, for instance, textile effluents when released into the ecological system without first being treated or with inappropriate levels of treatment, can lead to serious issues deteriorating the environment and human health. Moreover, solid waste from various industries has also become a major issue due to massive urbanization. For instance, the waste from the metal industry has been rapidly increasing such as Jarosite which has various metals, metal oxides, and silica in its composition. Therefore, Jarosite was utilized as an adsorbent for the adsorption of anionic Congo red (CR) and cationic Methylene blue (MB) dyes from aqueous solutions. The processed adsorbent sample was characterized by BET, XRD, SEM, EDS, FTIR, and XPS techniques. The effects of initial dye concentration, pH, adsorbent dose, temperature, and contact time were examined. The metal industry waste is used as a low-cost abundant adsorbent with great potential for adsorption ability to remove the CR (97.5%) and MB (68.5%) at pH 7, contact time 90 min, adsorbent dose 0.1 g, and initial dye concentration 50 mg/L. The adsorption data followed the adsorption isotherm and Kinetics for both dyes. The removal of both dyes was a physical adsorption process, endothermic and spontaneous reaction. Column adsorption investigation was described by AB (Adams-Bohart) and YN (Yoon-Nelson) models. According to the economic view, the utilization of jarosite for dye removal is a cost-effective approach, because it is collected free of cost from industries. Henceforth, for the first time, toxic metal industry waste was successfully utilized as an adsorbent for wastewater treatment.
摘要：
工业废料,例如,纺织废水释放到生态系统时，没有先处理或不适当的处理水平，会导致严重的问题恶化环境和人类健康。此外，由于大规模的城市化，来自各个行业的固体废物也成为一个主要问题。例如,来自金属工业的废物一直在迅速增加，例如含有各种金属的Jarosite，金属氧化物，和二氧化硅的组成。因此,Jarosite用作吸附剂，用于从水溶液中吸附阴离子刚果红（CR）和阳离子亚甲基蓝（MB）染料。处理后的吸附剂样品通过BET进行表征，XRD,SEM,EDS,FTIR,和XPS技术。染料初始浓度的影响，pH值,吸附剂剂量，温度,并检查了接触时间。金属工业废物被用作低成本的丰富吸附剂，具有在pH7，接触时间90min时去除CR（97.5％）和MB（68.5％）的巨大潜力，吸附剂剂量0.1g，和初始染料浓度50mg/L吸附数据遵循两种染料的吸附等温线和动力学。两种染料的去除都是物理吸附过程，吸热和自发反应。通过AB(Adams-Bohart)和YN(Yoon-Nelson)模型描述了柱吸附研究。根据经济学观点，利用黄钾离子去除染料是一种经济有效的方法，因为它是从行业免费收集的。从今以后,第一次,有毒金属工业废物被成功地用作废水处理的吸附剂。
