提高纺织废水的脱色能力:利用响应面方法在光氧化过程中使用多种氧化剂

IF 2.2 4区 化学 Q3 CHEMISTRY, MULTIDISCIPLINARY
Shayan Nadafahadi, Hasti Hasheminejad
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引用次数: 0

摘要

在光氧化过程中,氧化剂在去除颜色方面起着至关重要的作用。然而,目前还没有对三种常见氧化剂去除纺织废水中色素的性能进行全面比较。此外,高碘酸盐在亚铁存在下的除色效果也未得到广泛研究。本研究的目的是评估和比较三种常见氧化剂的除色效果。实验设计采用了中心复合设计,并评估了参数之间的相互作用及其对色素去除的影响。光氧化过程是在紫外光(60 W)照射下,在亚铁(Fe2+)和三种氧化剂(即过氧化氢(H2O2)、过硫酸钠(SPS)和高碘酸钠(SPI))的存在下进行的。四个主要变量是反应时间、pH 值、氧化剂浓度和亚铁浓度。最后,显示了所有参数的最佳值,并对这三种工艺进行了比较。虽然 UV/SPI/Fe2+ 工艺的色素去除率最高(96%),但考虑到所有参数,UV/SPS/Fe2+ 由于效率高、反应时间短、氧化剂浓度低而成为更好的选择。结果表明,在这些工艺中,光-芬顿工艺并不是一个好的选择,因为它需要的反应时间最长,氧化剂浓度最高,而去除效率却最低(82%)。这项研究的结果有助于决策过程,为纺织废水处理选择更好的工艺。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Enhancing textile wastewater decolorization: harnessing the power of diverse oxidants in photo-oxidation process with response surface methodology

Enhancing textile wastewater decolorization: harnessing the power of diverse oxidants in photo-oxidation process with response surface methodology

In the photo-oxidation processes, the oxidants play a vital role in removing color. However, a comprehensive comparison of the three common oxidants’ performance for color removal from textile wastewater has not been conducted. Also, the effect of periodate in the presence of ferrous for color removal has not been investigated extensively. The object of this study was to evaluate and compare the effect of three common oxidants on the removal of color. Central composite design was employed to design the experiments and evaluate the interaction between parameters and their impact on color removal. The photo-oxidation processes were carried out under UV light irradiation (60 W) in the presence of ferrous (Fe2+) and three oxidants, namely hydrogen peroxide (H2O2), sodium persulfate (SPS), and sodium periodate (SPI). The four main variables were the reaction time, the pH value, the concentration of oxidants, and the concentration of ferrous. Finally, the optimal values for all parameters were shown and these three processes were compared with each other. Although the UV/SPI/Fe2+ process had the highest color removal (96%), by considering all parameters, the UV/SPS/Fe2+ was a better choice because of its high efficiency, low reaction time, and low oxidant concentration. The results suggested that the photo-Fenton process could not be a good option among these processes, as it required the longest reaction time and highest oxidant concentration while achieving the lowest removal efficiency (82%). The results of this study can help with the decision-making process to select a better process for textile wastewater treatment.

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来源期刊
CiteScore
4.40
自引率
8.30%
发文量
230
审稿时长
5.6 months
期刊介绍: JICS is an international journal covering general fields of chemistry. JICS welcomes high quality original papers in English dealing with experimental, theoretical and applied research related to all branches of chemistry. These include the fields of analytical, inorganic, organic and physical chemistry as well as the chemical biology area. Review articles discussing specific areas of chemistry of current chemical or biological importance are also published. JICS ensures visibility of your research results to a worldwide audience in science. You are kindly invited to submit your manuscript to the Editor-in-Chief or Regional Editor. All contributions in the form of original papers or short communications will be peer reviewed and published free of charge after acceptance.
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