نتایج جستجو برای: Processes membrane

تعداد نتایج: 895089  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان - دانشکده فنی 1393

asymmetric membranes are widely used in many industrial membrane separation processes. the major advantage of membrane filtration over the conventional process is its ability to remove a wider spectrum of particles without using any chemicals. hollow fiber configuration offer many advantages over flat-sheet or tubular membranes. the spinning process of hollow fiber may look simple, yet it is te...

Membrane technology is growing very fast and it is used in several main applications from desalination, water and wastewater treatment to medical, biotechnology and gas separation field. Different membrane processes are applied depending on the applications from more traditional pressure-driven membrane processes (Microfiltration, MF; Ultrafiltration, UF; Nanofiltration, NF) to more advanced on...

Journal: :Water Environment Research 2018

Journal: :journal of chemical and petroleum engineering 2010
amir sheikhi رحمت ستوده قره باغ mohammad hosein labbaf mojghan abbasi

nowadays, membrane processes are widely used for high purity nitrogen production. separation of air by membranes is a flexible process in which the investment and operational costs are lower than for example adsorption or cryogenic processes. such processes are based on relative permeability of air components which are transported by the pressure difference between two sides of the membrane. ma...

Journal: :نشریه دانشکده فنی 0
سارا فرهنگی مجتبی شریعتی نیاسر محمد سلطانیه مهدی پور افشاری چنار

it is several decades that the application of membrane processes for gas separation has become a great concern within industries. among them, the polymeric membranes of different structures have played the most important role. such application has been widely extended to gas separation and due to the necessity of both; prediction of the behavior of these processes and recognition of the effecti...

The technique to fabricate nanofibrous mat by electro-spinning has been known for a long time. But the attempts to use the electospun nanofiber mats, also known as electro-spun nanofiber membranes (ENMs), for filtration purposes began only recently. Among many membrane filtration processes, air cleaning by the removal of dust particles has already been commercialized and the product has been in...

Mehdi Pourafshari Chenar Mohammad Soltanieh Mojtaba Shariati Niasar Sara Farhangi

It is several decades that the application of membrane processes for gas separation has become a great concern within industries. Among them, the polymeric membranes of different structures have played the most important role. Such application has been widely extended to gas separation and due to the necessity of both; prediction of the behavior of these processes and recognition of the effecti...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز 1380

آنالیز فرآیندهای ایستا در قلمرو(دامنه طیفی) بر توزیع های طیفی بنا شده است . اما برای فرآیندهای غیرایستای هارمونیک ساز(harmonizable) ، زوج (f, ) که f یک اندازه برداری (vector measure) و یک اندازه بورل می باشد ، به عنوان مشخصه های طیفی ارائه می شود. در این پایان نامه یک روش طبیعی برای ساختن نمایش طیفی ارائه می شود که این روش برای فرآیندهای مرتبه دوم (second order processes) و فرآیندهای پایدار (st...

Amir Sheikhi Mohammad Hosein Labbaf Mojghan Abbasi رحمت ستوده قره باغ,

Nowadays, membrane processes are widely used for high purity Nitrogen production. Separation of air by membranes is a flexible process in which the investment and operational costs are lower than for example adsorption or cryogenic processes. Such processes are based on relative permeability of air components which are transported by the pressure difference between two sides of the membrane. M...

Journal: :international journal of advanced biological and biomedical research 2014
f. golbabaei kootenaei h. aminirad

the term 'membrane bioreactor' expresses a combination of activated sludge and membrane separation processes. the need to processes like sedimentation and disinfection used in common methods is eliminated through mbr systems in a way that membranes are placed into or out of an aeration tank and the vacuumed wastewater created by the suction pump is pulled up from inside the membranes and leaves...

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