تصفیه پساب نفتی با استفاده از فرآیند ترکیبی جذب-میکروفیلتراسیون با غشاهای سرامیکی

نوع مقاله: علمی ترویجی

نویسندگان

1 دانشگاه خلیج فارس بوشهر

2 دانشگاه خلیج فارس

چکیده

در این مطالعه چهار نوع غشای سرامیکی میکروفیلتراسیون مولیت، مولیت- آلومینا، مولیت- آلومینا- زئولیت و مولیت -زئولیت با استفاده از روش اکستروژن ساخته شدند. برای اطمینان از درست ساخته شدن غشاها، تست میکروسکوپ الکترونی، پراش پرتو ایکس، تخلخل سنجی، مقاومت مکانیکی و میانگین قطر حفره های غشاها روی آن ها انجام شد. سپس این غشاها در فرآیند ترکیبی جذب-میکروفیلتراسیون برای تصفیه پساب نفتی سنتزی به کار گرفته شدند. اثر غلظت کربن فعال و نوع غشاها بر شار تراوایی غشا، درصد حذف موادآلی، کدورت و COD بررسی شد. نتایج نشان داد که برای غشای مولیت، مولیت- آلومینا و مولیت- آلومینا- زئولیت بیشترین شار تراوایی در غلظت 800 میلی گرم بر لیتر و در غشای مولیت- زئولیت در غلظت 200 میلی گرم بر لیتر بدست آمده است. افزایش کربن فعال با هر غلظتی به سیستم میکروفیلتراسیون باعث افزایش راندمان حذف موادآلی، کدورت و COD در تمام غشاها می شود.

کلیدواژه‌ها


عنوان مقاله [English]

Oily wastewater treatment by using ceramic microfiltration-adsorption hybrid process

نویسنده [English]

  • yaser rasouli 1
1 student of chemical engineering in master of science degree at Persian gulf university
2 Persian Gulf University
چکیده [English]

In this study four types of ceramic microfiltration membranes were fabricated by extrusion and sintering method; Mullite, mullite-alumina, mullite-alumina-zeolite and mullite-zeolite membranes. In order to ensure the correct fabrication of membranes, fabricated membranes were subjected to characterization tests such as scanning electron microscopy (SEM), X-ray diffraction (XRD), porosimetery, mechanical strength and mean pore size calculation. Synthetic oily wastewater were treated by these membranes in microfiltration-adsorption hybrid process. Effect of Powdered Activated Carbon (PAC) concentration on the membrane permeation flux, oil removal efficiency, turbidity and COD removal were investigated. Results showed that in mullite, mullite-alumina and mullite-alumina-zeolite membranes, highest permeate flux obtained in 800 mg L-1 of PAC concentration. For mullite-zeolite membranes addition of 200 mg L-1 PAC concentration lead to highest permeate flux. Addition of PAC with any concentration in all membranes increased oil removal, turbidity and COD removal percent significantly.

کلیدواژه‌ها [English]

  • Ceramic Membrane
  • Microfiltration
  • Powdered Activated Carbon (PAC)
  • Oily wastewater
  • Microfiltration-Adsorption Hybrid Process
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