Reduction of COD in Resin Production Wastewater Using Three Types of Activated Carbon
محل انتشار: فصلنامه روشهای تصفیه محیط، دوره: 1، شماره: 3
سال انتشار: 1392
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 574
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شناسه ملی سند علمی:
JR_JETT-1-3_005
تاریخ نمایه سازی: 7 شهریور 1393
چکیده مقاله:
In this work, the efficiency of activated carbon derived from carbonized date pits (ADP) and rice husks (ARH) was compared with commercial activated carbon (CAC) for the reduction of COD in wastewater arising from resin manufacturing plant. The process was studied in batch mode with employing different absorbents optimizing various parameters, such as adsorbent dosage, contact time and pH. Adsorption equilibrium and kinetic data were determined for the three adsorbents and were fitted to several isotherm and kinetic models accordingly. The results indicated that a maximum COD reduction of 92.4% was obtained at pH 2 using 30 g/L CAC, 90.3% using 40g/L ADP and 88.9% using 60 g/L ARH. Kinetically, the results data showed that reduction of COD onto the three adsorbents was better fitted to pseudo second-order model. Equilibrium adsorption data for the reduction of COD effluent using CAC, ADP and ARH were best fitted to the Langmuir isotherm model.
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نویسندگان
F. M. S. E El-Dars
Chemistry Department, Faculty of Science, Helwan University, Ain Helwan, Helwan, Cairo, Egypt. Corresponding author
M. H. M Bakr
Chemistry Department, Faculty of Science, Helwan University, Ain Helwan, Helwan, Cairo, Egypt
Adel M. E Gabre
Head of Paint R&D and Head of Quality Assurance and Environmental Affairs, El Obour Paint and Chemicals Factory (Pachin), Al Obour City, Egypt.