Aneggi Eleonora, Hussain Sajid, Baratta Walter, Zuccaccia Daniele, Goi Daniele
Dipartimento di Scienze AgroAlimentari, Ambientali e Animali, Sezione di Chimica, Università di Udine, e INSTM, 33100 Udine, Italy.
Dipartimento Politecnico di Ingegneria e Architettura, Università di Udine, e INSTM, 33100 Udine, Italy.
Molecules. 2024 Apr 30;29(9):2074. doi: 10.3390/molecules29092074.
The qualitative impact of pollutants on water quality is mainly related to their nature and their concentration, but in any case, they determine a strong impact on the involved ecosystems. In particular, refractory organic compounds represent a critical challenge, and several degradation processes have been studied and developed for their removal. Among them, heterogeneous Fenton treatment is a promising technology for wastewater and liquid waste remediation. Here, we have developed mono- and bimetallic formulations based on Co, Cu, Fe, and Mn, which were investigated for the degradation of three model organic dyes (methylene blue, rhodamine B, and malachite green). The treated samples were then analyzed by means of UV-vis spectrophotometry techniques. Bimetallic iron-based materials achieved almost complete degradation of all three model molecules in very short time. The Mn-Fe catalyst resulted in the best formulation with an almost complete degradation of methylene blue and malachite green at pH 5 in 5 min and of rhodamine B at pH 3 in 30 min. The results suggest that these formulations can be applied for the treatment of a broad range of liquid wastes comprising complex and variable organic pollutants. The investigated catalysts are extremely promising when compared to other systems reported in the literature.
污染物对水质的定性影响主要与其性质和浓度有关，但无论如何，它们都会对相关生态系统产生重大影响。特别是，难降解有机化合物是一项严峻挑战，人们已经研究并开发了多种降解工艺来去除它们。其中，非均相芬顿处理是一种很有前景的废水和废液修复技术。在此，我们开发了基于钴、铜、铁和锰的单金属和双金属配方，并研究了它们对三种典型有机染料（亚甲基蓝、罗丹明B和孔雀石绿）的降解效果。然后采用紫外可见分光光度法对处理后的样品进行分析。双金属铁基材料在极短时间内几乎实现了对所有三种典型分子的完全降解。锰铁催化剂是最佳配方，在pH值为5时5分钟内几乎完全降解亚甲基蓝和孔雀石绿，在pH值为3时30分钟内几乎完全降解罗丹明B。结果表明，这些配方可用于处理包含复杂多变有机污染物的多种废液。与文献中报道的其他系统相比，所研究的催化剂极具前景。
