کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
625400 | 1455428 | 2010 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Treatment of malathion pesticide wastewater with nanofiltration and photo-Fenton oxidation
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Treatment of malathion pesticide wastewater with nanofiltration and photo-Fenton oxidation Treatment of malathion pesticide wastewater with nanofiltration and photo-Fenton oxidation](/preview/png/625400.png)
چکیده انگلیسی
Pesticide industry wastewater treatment combining nanofiltration (NF) and advanced oxidation process (AOP) using photo-Fenton's reagent was investigated in the laboratory. During the first stage of study, NF and AOP were used independently to treat malathion as a model substrate in pesticide industry wastewater (10Â mg/L) to produce high quality effluent (less than 0.1Â mg/L). Of the three types of NF membranes used (NF-A, NF90, and NF270), NF270 membrane has the largest water flux, but did not meet the desired effluent concentration of 0.1Â mg/L. NF90 and NF-A membranes could reduce the malathion concentration to 0.06Â mg/L, but provided a lower flux rate compared to NF270 membrane. AOP experiments were conducted at pH 3 to determine the optimum initial ratios of chemicals, which were malathion: H2O2Â =Â 1:100 and H2O2:Fe(II)Â =40:1. Experiments were also carried out at different initial malathion concentrations to determine the reaction time for the desired effluent under the optimum conditions. It took 1Â h, 2.25Â h and 3Â h to reduce the malathion from different initial concentrations (1, 10, and 33Â mg/L) to the desired level. During the second stage of study, a specific energy consumption was determined for each treatment scheme to evaluate the economic feasibility of the NF-AOP combination. AOP is the significant energy consumer in the combined process and hence should be minimized by enhancing NF.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 263, Issues 1â3, 30 November 2010, Pages 36-44
Journal: Desalination - Volume 263, Issues 1â3, 30 November 2010, Pages 36-44
نویسندگان
Yanming Zhang, Krishna Pagilla,