جداسازی آب و نفت به کمک مش استیل پوشش‌دهی شده با نانوصفحات کربن نیترید گرافیتی (g-C3N4) مزوپور

نوع مقاله : پژوهشی

نویسندگان

1 دانشجوی دکتری، دانشکده مهندسی شیمی، دانشگاه امیرکبیر، تهران، ایران

2 استاد، هیئت‌علمی، مرکز تحقیقات نانوفناروی، پژوهشگاه صنعت نفت، تهران، ایران

3 دانشیار، دانشکده مهندسی شیمی، دانشگاه امیرکبیر، تهران، ایران

چکیده

وجود آب در نفت اغلب منجر به مشکلات گزارش شده در منابع از محدودیت در خط جریان فشار، کاهش تولید، خوردگی خط لوله، نقص عملکرد پمپ‌ها، مسمومیت کاتالیست‌های جریان پایین‌دستی پالایشگاه کاتالیزورها و سایر مشکلات مرتبط با تجهیزات تولید و ستون تقطیر می‌شود. در این مطالعه فیلتر پوشش‌دهی شده با نانوصفحات کربن نیترید گرافیتی (g-C3N4) آماده سازی شد و به عنوان جایگزینی برای امولسیون‌زداها برای جداسازی آب از نفت در مرحله ی قبل از ورود نفت به پالایشگاه پیشنهاد شد. بدین منظور، نانوصفحات کربن نیترید گرافیتی مزوپور با روش پلی کاندنسیشن حرارتی و با به کار گیری روش قالب سخت سنتز شد و روی سطح مش استیل ضد زنگ به کمک اسپری پاششی پوشش داده شد. سطح مش پوشش‌دهی شده با نانوورق g-C3N4 خواص ترشوندگی آبدوستی در هوا و فوق نفت‌گریزی زیر آب را نشان داد. نتایج جداسازی آب و نفت به کمک فیلتر آماده شده نشان داد که آب با فلاکس عبوری 2200L.m-2.h-1 با بازده جداسازی تقریبأ بیشتر از %99 از سطح عبور می‌کند، در حالیکه نفت عبور نکرده و در بالای فیلتر باقی می‌ماند. تکرارپذیری فیلتر برای جداسازی آب و نفت مورد بررسی قرار گرفت و نتایج نشان داد که بازده جداسازی و فلاکس عبوری فیلتر پس از 25 مرحله تکرار جداسازی آب و نفت تغییر ناچیزی داشته است.

کلیدواژه‌ها

عنوان مقاله [English]

Oil-Water Separation by Means of Stainless Steel Mesh Coated with Mezopore Graphitic Carbon Nitride (g-C3N4) Nanosheets

نویسندگان [English]

  • sonia Mir 1
  • Alimorad rashidi 2
  • Abbas Naderifar 3
1 Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
2 Nanotechnology Research Center, Research Institute of Petroleum Industry, Tehran, Iran
3 Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
چکیده [English]

The presence of water in the oil often leads to problems reported in the literature from pressure flow limitations, reduced production, pipeline corrosion, pump malfunctions, poisoning of downstream catalysts in catalyst refineries, and other problems related to production equipment and distillation column. In this study, a coated filter with graphitic nitride carbon nanosheets (g-C3N4) was prepared and proposed as an alternative to demulcifiers to separate water from oil before entering the petroleum refinery. For this purpose, mesopore graphitic nitride carbon nanosheets are synthesized by thermal polycondensation method using hard-template approach and coated on the surface of stainless steel mesh using spray gun. The surface of the g-C3N4 coated mesh showed the hydrophilic/underwater superoleophobic wettability properties. The results of water-oil separation using the prepared filter showed that water permeated through the filter with a flux of 2200 L.m-2.h-1, while oil does not pass and remains on top of the filter with the separation efficiency more than 99%. The durability of the filter for water and oil separation was investigated and the results showed that the separation efficiency and flux after 25 cycles of water-oil separation have changed slightly.

کلیدواژه‌ها [English]

  • Water-Oil Separation
  • Nanofilters
  • Graphitic Carbon Nitride (g-C3N4)
  • Hydrophilicity and Oleophobicity

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