Karim Naveed, Kyawoo Tin, Jiang Chao, Ahmed Saeed, Tian Weiliang, Li Huiyu, Feng Yongjun
State Key Laboratory of Chemical Resource Engineering, Beijing Engineering Center for Hierarchical Catalysts, Beijing University of Chemical Technology, No. 15 Beisanhuan East Road, Chaoyang District, Beijing 100029, China.
Department of Chemistry, University of Chakwal, Chakwal 48800, Pakistan.
Materials (Basel). 2024 May 29;17(11):2615. doi: 10.3390/ma17112615.
The continuous discharge of organic dyes into freshwater resources poses a long-term hazard to aquatic life. The advanced oxidation Fenton process is a combo of adsorption and degradation of pollutants to detoxify toxic effluents, such as anti-bacterial drugs, antibiotics, and organic dyes. In this work, an activated attapulgite clay-loaded iron-oxide (A-ATP@FeO) was produced using a two-step reaction, in which attapulgite serves as an enrichment matrix and FeO functions as the active degrading component. The maximum adsorption capacity (q) was determined by assessing the effect of temperature, pH HO, and adsorbent. The results showed that the A-ATP@FeO achieves the highest removal rate of 99.6% under optimum conditions: 40 °C, pH = 3, HO 25 mM, and 0.1 g dosage of the composite. The dye removal procedure achieved adsorption and degradation equilibrium in 120 and 30 min, respectively, by following the same processes as the advanced oxidation approach. Catalytic activity, kinetics, and specified surface characteristics suggest that A-ATP@FeO is one of the most promising candidates for advanced oxidation-enrooted removal of organic dyes.
有机染料持续排入淡水资源对水生生物构成长期危害。先进的氧化芬顿工艺是一种将污染物吸附与降解相结合的方法，用于对有毒废水进行解毒，如抗菌药物、抗生素和有机染料。在这项工作中，通过两步反应制备了负载活性凹凸棒土的氧化铁（A-ATP@FeO），其中凹凸棒土作为富集基质，FeO作为活性降解成分。通过评估温度、pH值、过氧化氢以及吸附剂的影响来确定最大吸附容量（q）。结果表明，在最佳条件下（40℃、pH = 3、过氧化氢25 mM以及0.1 g复合材料用量），A-ATP@FeO的去除率最高可达99.6%。染料去除过程分别在120分钟和30分钟内达到吸附和降解平衡，其遵循与先进氧化方法相同的过程。催化活性、动力学和比表面积特性表明，A-ATP@FeO是基于先进氧化去除有机染料最有前景的候选材料之一。
