University of Castilla-La Mancha, Grupo IMAES, Department of Chemical Engineering, Escuela Técnica Superior de Ingenieros Industriales, Avda. Camilo José Cela, 1, 13071 Ciudad Real, Spain.
J Environ Manage. 2013 Oct 15;128:210-9. doi: 10.1016/j.jenvman.2013.05.013. Epub 2013 Jun 10.
The degradation of a pharmaceutical wastewater using a ferrioxalate-assisted solar/photo-Fenton system has been studied. The photochemical reaction was carried out in a pilot plant consisting of a compound parabolic collector (CPC) solar reactor. An optimization study was performed combining a multivariate experimental design and Neuronal Networks that included the following variables: initial concentrations of H2O2, catalyst Fe (II) and oxalic acid (H2C2O4), temperature and solar power. Under optimal conditions, 84% TOC (Total Organic Carbon) removal was achieved in 115 min. Oxalic acid had a positive effect on mineralization when solar power was above 30 W m(-2). The minimum amount of H2O2 to degrade 1 mol of TOC was found to be 3.57 mol. Both the H2O2 conversion efficiency and the degree of mineralization were highest when the oxalic/Fe(II) initial molar relation was close to 3. HO radicals were the main oxidative intermediate species in the process, although hydroperoxyl radicals (HO(2)(·)) also played a role.
采用草酸盐辅助的太阳能/光-Fenton 系统处理制药废水的研究。光化学反应在一个由复合抛物面集热器（CPC）太阳能反应器组成的中试工厂中进行。通过多元实验设计和神经网络进行了优化研究，包括以下变量：H2O2、催化剂 Fe（II）和草酸（H2C2O4）的初始浓度、温度和太阳能功率。在最佳条件下，在 115 分钟内实现了 84%的 TOC（总有机碳）去除。当太阳能功率高于 30 W m(-2)时，草酸对矿化有积极影响。发现降解 1 mol TOC 所需的 H2O2 的最小量为 3.57 mol。当草酸/Fe(II)初始摩尔比接近 3 时，H2O2 的转化率和矿化程度最高。HO 自由基是该过程中的主要氧化中间物种，尽管过氧自由基（HO(2)(·)）也起作用。
