Fuzzy optimization of the photo-Fenton process on o-toluidine degradation in the aspect wastewater treatment

IF 5.3 Q2 ENGINEERING, ENVIRONMENTAL

Cleaner Engineering and Technology Pub Date : 2024-10-01 DOI:10.1016/j.clet.2024.100817

Redeil N. Arreza, Alec Nowell A. Ranara, Trisha Kerstin C. Tan, Kathleen B. Aviso, Angelo Earvin Sy Choi

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Abstract

Significant volumes of wastewater, particularly from the textile industry, pose environmental concerns due to the presence of hazardous substances such as ortho-toluidine (OT). The photo-Fenton process can be used to break down and remove this hazardous organic compound. Previous studies on the photo-Fenton process have focused on local optimization of operating variables without considering cost factors. The photo-Fenton process is studied in this paper with UVA irradiation, Fe²⁺ dosage, and H₂O₂ concentration considered as variables. The study uses fuzzy optimization in a multi-objective framework for making decisions to determine the optimal values of OT degradation with its corresponding cumulative uncertainty error (Y_A), and the total operating cost (C_T), both of which are essential for assessing the techno-economic feasibility of the process. The Pareto front was generated from the objective functions to establish the boundary limits for Y_A and C_T. The results show an overall satisfaction level of 71.81% for the objective functions, indicating a partially satisficing solution for maximizing OT degradation while minimizing operating cost. The optimum conditions of the variables require 85.70 W m⁻³ UVA irradiation, 0.5177 mM for Fe²⁺ dosage, and 7.85 mM for the H₂O₂ concentration. These conditions yielded an OT degradation value of 83.22% and a total operating cost of 768.61 USD·m⁻³. Comparison with previous literature showed an OT degradation efficiency that was 16.78% lower. However, this tradeoff in the process efficiency is offset by a total operating cost that is 2.28 times cheaper, emphasizing the cost-effectiveness of the fuzzy optimized solution.

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模糊优化光-芬顿工艺在废水处理中对邻甲苯胺的降解作用

大量废水，尤其是纺织业的废水，因含有邻甲苯胺（OT）等有害物质而引发环境问题。光-芬顿工艺可用于分解和去除这种有害有机化合物。以往对光-芬顿工艺的研究主要集中在操作变量的局部优化，而没有考虑成本因素。本文以 UVA 照射、Fe2+ 用量和 H2O2 浓度为变量，对光-芬顿工艺进行了研究。该研究在多目标框架下使用模糊优化进行决策，以确定 OT 降解的最佳值及其相应的累积不确定性误差（YA）和总运营成本（CT），这两个值对于评估该工艺的技术经济可行性至关重要。根据目标函数生成帕累托前沿，以确定 YA 和 CT 的边界限制。结果表明，目标函数的总体满意度为 71.81%，这表明在最大化 OT 降解的同时最小化运营成本的解决方案部分令人满意。变量的最佳条件需要 85.70 W m-3 的 UVA 照射、0.5177 mM 的 Fe2+ 用量和 7.85 mM 的 H2O2 浓度。在这些条件下，OT 降解值为 83.22%，总运行成本为 768.61 美元-m-3。与以前的文献相比，OT 降解效率低 16.78%。然而，总运营成本降低了 2.28 倍，从而抵消了工艺效率上的折衷，凸显了模糊优化解决方案的成本效益。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Cleaner Engineering and Technology Engineering-Engineering (miscellaneous)

CiteScore

9.80

自引率

0.00%

发文量

218

审稿时长

21 weeks