El-Gawad Heba A, Ghaly Montaser Y, El Hussieny N F, Abdel Kreem M, Reda Y
Department of Engineering Mathematics and Physics, Higher Institute of Engineering, El-Shorouk Academy, Cairo, Egypt.
National Research Centre, Chemical Engineering and Pilot Plant Department, Canal High Institute of Engineering and Technology, Suez, Egypt.
Sci Rep. 2024 Apr 13;14(1):8573. doi: 10.1038/s41598-024-58610-w.
Textile industry wastewater containing toxic dyes and high COD poses environmental hazards and requires treatment before discharge. This study addresses the challenge of treating complex textile wastewater using a novel integrated system. The system combines sedimentation, screening, adsorption, and an optimized solar photo-Fenton process to provide a sustainable treatment solution. A novel parabolic collector with a larger absorber tube diameter enhances solar radiation utilization at lower catalyst concentrations. This design is versatile, treating all types of wastewaters, especially those that contain colors, smells, solid and suspended materials, in addition to its importance for the treatment of difficult substances that may be present in industrial and sewage wastewaters that are difficult to dispose of by traditional treatment methods. Multivariate experiments optimized key photo-Fenton parameters (pH, catalyst dose, etc.) achieving significant pollutant removal (85% COD, 82% TOC, complete color) under specific conditions (pH 3, 0.2 g/L Fe(II), 1 mL/L HO, 40 °C and 100 L/h flow rate after 60 min irradiation). Kinetic modeling revealed second-order reaction kinetics, and multivariate regression analysis led to the development of models predicting treatment efficiency based on process factors. The key scientific contributions are the integrated system design combining conventional and advanced oxidation technologies, novel collector configuration for efficient utilization of solar radiation, comprehensive process optimization through multivariate experiments, kinetic modeling and predictive modeling relating process factors to pollutant degradation. This provides an economical green solution for textile wastewater treatment and reuse along with useful design guidelines. The treatment methodology and modeling approach make valuable additions for sustainable management of textile industry wastewater.
含有有毒染料和高化学需氧量的纺织工业废水会对环境造成危害，排放前需要进行处理。本研究应对了使用新型集成系统处理复杂纺织废水的挑战。该系统结合了沉淀、筛分、吸附和优化的太阳能光芬顿工艺，以提供可持续的处理解决方案。一种具有较大吸收管直径的新型抛物面收集器在较低催化剂浓度下提高了太阳能辐射利用率。这种设计具有通用性，可处理所有类型的废水，特别是那些含有颜色、气味、固体和悬浮物的废水，此外，它对于处理工业和污水中可能存在的、传统处理方法难以处置的难降解物质也很重要。多变量实验优化了关键的光芬顿参数（pH值、催化剂剂量等），在特定条件下（pH值为3、Fe(II)为0.2 g/L、H₂O₂为1 mL/L、40°C以及辐照60分钟后流速为100 L/h）实现了显著的污染物去除率（化学需氧量去除85%、总有机碳去除82%、颜色完全去除）。动力学建模揭示了二级反应动力学，多变量回归分析得出了基于工艺因素预测处理效率的模型。关键的科学贡献在于将传统技术与高级氧化技术相结合的集成系统设计、高效利用太阳能辐射的新型收集器配置、通过多变量实验进行的全面工艺优化、将工艺因素与污染物降解相关联的动力学建模和预测建模。这为纺织废水处理和回用提供了经济的绿色解决方案以及有用的设计指南。该处理方法和建模方法为纺织工业废水的可持续管理增添了宝贵内容。
