Enhanced UV/H2O2 System for the Oxidation of Organic Contaminants and Ammonia Transformation from Tannery Effluents

被引：5
作者：
Urbina-Suarez, Nestor A. [1 ,2 ]
Lopez-Barrera, German L. [1 ]
Garcia-Martinez, Janet B. [1 ]
Barajas-Solano, Andres F. [1 ]
Machuca-Martinez, Fiderman [3 ]
Zuorro, Antonio [4 ]
机构：
[1] Univ Francisco de Paula Santander, Dept Environm Sci, Ave Gran Colombia 12E-96, Cucuta 540003, Colombia
[2] Univ Valle, Sch Nat Resources & Environm, Ciudad Univ Melendez,Calle 13 100-00, Cali 760015, Colombia
[3] Univ Valle, Ctr Excellence New Mat CENM, Sch Chem Engn, Ciudad Univ Melendez,Calle 13 100-00, Cali 760015, Colombia
[4] Sapienza Univ, Dept Chem Engn Mat & Environm, Via Eudossiana 18, I-00184 Rome, Italy
来源：
PROCESSES | 2023年 / 11卷 / 11期
关键词：
tannery wastewater; advanced oxidation processes; COD; nitrification; photocatalysis; WASTE-WATER; BIOLOGICAL TREATMENT; FENTON; DEGRADATION; REMOVAL; H2O2;
D O I：
10.3390/pr11113091
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
In this work, a UV/H2O2 system in real tannery wastewater was evaluated by an experimental design with optimal stage 2-level I-optimal reaction surface using Design Expert software to analyze the effects of temperature, pH, UV lamp power (W), and H2O2 concentration on COD removal and nitrification. It was found that pH and temperature were the variables that affected the process the most. It was found that an acidic pH of 4.5-5.5 and temperatures between 50 and 70(degrees)C favored improved COD and ammonium oxidation. The process conditions-temperature 54.6 C-degrees, pH 4, pW-UV 60 W and hydrogen peroxide 0.5-were confirmed in the next phase of the study using a one-way statistical analysis ANOVA. Under these conditions, the nitrite removal rate was 98.4%, ammonium 94.53%, chromium 92.3%, chlorides 62.4%, BOD 67.4%, COD 44.5%, and color 48%.
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页数：15
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