使用 Box-Behnken 方法优化芬顿和 UV-Fenton 降解罗红霉素 B 中 EDTA-黄钾铁矾替代商用铁的可持续性。

Sustainable replacement of EDTA-Biojarosite for commercial iron in the Fenton's and UV-Fenton's degradation of Rhowedamine B - a process optimization using Box-Behnken method.

机构信息

Department of Civil Engineering, National Institute of Technology Karnataka, Surathkal, P.O. Srinivasnagar, Mangalore 575025, India E-mail:

Department of Studies in Microbiology, University of Mysore, Mysuru, Karnataka 570006, India.

出版信息

Water Sci Technol. 2022 Oct;86(8):2008-2019. doi: 10.2166/wst.2022.299.

DOI:10.2166/wst.2022.299

PMID:36315092

Abstract

Biojarosite as a replacement for commercial iron catalyst in the oxidative degradation of the dye Rhodamine B was confirmed and established. Investigations on the oxidative degradation by Fenton's oxidation and UV-Fenton's oxidation with EDTA at neutral pH were conducted and degradation of target compound was evaluated. UV-Fenton's oxidation was shown to be efficient over Fenton's oxidation in the degradation of Rhodamine B with removal efficiency of 90.0%. Design of Experiments was performed with Box-Behnken design. Investigation was conducted for the predicted values separately for both Fenton's oxidation and UV-Fenton's oxidation and the Rhodamine B removal was taken as response. Variable parameters biojarosite, HO dosage and EDTA were optimized in the range of 0.1-1 g/L, 2.94-29.4 mM and 10-100 mM, respectively. A quadratic regression model is fitted for both Fenton's and UV-Fenton's oxidation. Analysis of variance (ANOVA) is performed and model fit is discussed.

摘要

确定并建立了生物黄钾铁矾替代商业铁催化剂，用于染料罗丹明 B 的氧化降解。在中性 pH 下进行芬顿氧化和 UV-Fenton 氧化与 EDTA 的氧化降解研究，并评价目标化合物的降解情况。与芬顿氧化相比，UV-Fenton 氧化在罗丹明 B 的降解中更为有效，去除效率达到 90.0%。采用 Box-Behnken 设计进行实验设计。分别对芬顿氧化和 UV-Fenton 氧化的预测值进行了研究，以罗丹明 B 的去除率作为响应。在 0.1-1 g/L、2.94-29.4 mM 和 10-100 mM 的范围内，对生物黄钾铁矾、HO 剂量和 EDTA 这三个变量参数进行了优化。为芬顿氧化和 UV-Fenton 氧化都拟合了二次回归模型。进行方差分析（ANOVA），并讨论模型拟合情况。