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光电化学氧化法处理咖啡加工废水中的磷酸盐和硝酸盐。

Phosphate and Nitrate Removal from Coffee Processing Wastewater Using a Photoelectrochemical Oxidation Process.

机构信息

Faculty of Civil and Environmental Engineering, Jimma Institute of Technology, Jimma University, P.O. Box 378, Ethiopia.

School of Chemical Engineering, Jimma Institute of Technology, Jimma University, P.O. Box 378, Ethiopia.

出版信息

J Environ Public Health. 2022 Sep 19;2022:4382491. doi: 10.1155/2022/4382491. eCollection 2022.

DOI:10.1155/2022/4382491
PMID:36193391
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9526562/
Abstract

Water quality, whether utilized for home, irrigation, or recreational reasons, is crucial for health in both developing and developed countries around the world. For the treatment of nitrate (NO) and phosphate (PO) from coffee processing wastewater, photoelectrochemical oxidation was used. This process is mainly used to destroy pollutants through the production and use of powerful oxidized species such as hydroxyl radical (OH). It investigated the effects of Uv/HO on electrochemical processes and the effects of various parameters such as pH, time, current, and electrolytes. The results were calculated and analyzed using response surface methodology and Microsoft Excel. Hybrid photoelectrochemical oxidation (PECO) using UV and hydrogen peroxide (UV/HO) methods removed nitrates (99.823%) and phosphates (99.982%). These results were obtained with pH 7, current 0.40 amperes, and 1.5 g calcium chloride after 40 minutes of electrolysis. CaCl was more effective in removing organic compounds from coffee processing wastewater. An analysis of variance (ANOVA) with a 95% confidence limit was used to determine the significance of the independent variable.

摘要

水质无论是用于家庭、灌溉还是娱乐目的,对世界上发展中国家和发达国家的健康都至关重要。光电化学氧化法用于处理咖啡加工废水中的硝酸盐(NO)和磷酸盐(PO)。该过程主要通过产生和使用强大的氧化物质,如羟基自由基(OH),来破坏污染物。研究了 Uv/HO 对电化学过程的影响以及各种参数(如 pH 值、时间、电流和电解质)的影响。使用响应面法和 Microsoft Excel 对结果进行了计算和分析。使用紫外线和过氧化氢(UV/HO)的混合光电化学氧化(PECO)方法去除了硝酸盐(99.823%)和磷酸盐(99.982%)。在 pH 值为 7、电流为 0.40 安培和 1.5 g 氯化钙的条件下,电解 40 分钟后得到了这些结果。氯化钙在去除咖啡加工废水中的有机化合物方面更有效。使用具有 95%置信限的方差分析(ANOVA)来确定自变量的显著性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c560/9526562/40c2e0d2a430/JEPH2022-4382491.009.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c560/9526562/40c2e0d2a430/JEPH2022-4382491.009.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c560/9526562/e48235f1ac33/JEPH2022-4382491.002.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c560/9526562/5c4a1c0e9da9/JEPH2022-4382491.004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c560/9526562/1f79a3524698/JEPH2022-4382491.005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c560/9526562/d6c5669cefb7/JEPH2022-4382491.006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c560/9526562/0227e3b8a496/JEPH2022-4382491.007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c560/9526562/ff4362a11943/JEPH2022-4382491.008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c560/9526562/40c2e0d2a430/JEPH2022-4382491.009.jpg

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