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Evaluating the efficiency of advanced oxidation processes for textile wastewater treatment: Electro‐kinetic, sonochemical and persulfate
Environmental Progress & Sustainable Energy ( IF 2.8 ) Pub Date : 2020-09-27 , DOI: 10.1002/ep.13531
Sahand Jorfi 1, 2 , Zeinab Ghaedrahmat 1, 3
Affiliation  

The aim of this study was to evaluate the electro‐kinetic/ultrasonic/persulfate (EK/US/PS) process efficiency for textile wastewater treatment. The concentration of persulfate (0.5, 0.75, 1, 1.25, 1.5 mM), reaction time (30, 60, 90 and 120 min were studied consecutively, according to one factor at the time methodology. Result was indicated that the highest removal efficiency of 38% was achieved at pH 5. The chemical oxygen demand (COD) removal efficiency at electrolyte concentration of 6, 8 and 10 g/L were 56, 58 and 59% respectively. Results were showed that by increasing the ultrasonic power up to 300 W, the removal efficiency increased from 78 to 96% at a reaction time of 90 min and from 92 to 96% at a reaction time of 120 min. The correlation coefficient for pseudo‐first‐order kinetic model and pseudo‐second‐order kinetic models were obtained 0.96 and 0.87, respectively. Therefore, according to the results of this study, it was suggested to use EK/US/PS process for treatment of textile wastewater.

中文翻译:

评估用于纺织品废水处理的高级氧化工艺的效率:电动,声化学和过硫酸盐

这项研究的目的是评估电动/超声/过硫酸盐(EK / US / PS)处理纺织废水的效率。根据时间方法中的一个因素,连续研究了过硫酸盐的浓度(0.5、0.75、1、1.25、1.5 mM),反应时间(30、60、90和120分钟),结果表明,去除率最高。在pH 5时达到38%,当电解液浓度为6、8和10 g / L时,化学需氧量(COD)去除效率分别为56、58和59%,结果表明,通过将超声波功率提高到300 W,在90分钟的反应时间,去除效率从78%增加到96%,在120分钟的反应时间,去除效率从92%增加到96%。拟一阶动力学模型和拟二阶动力学模型的相关系数分别为0.96和0.87。因此,根据这项研究的结果,建议使用EK / US / PS工艺处理纺织废水。
更新日期:2020-09-27
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