نتایج جستجو برای: Membrane fouling

تعداد نتایج: 391687  

Membrane separation technologies have recently received much attention, from lab-scale studies to full-scale operations, in the forest industry. However, membrane fouling comprises a signifcant obstacle to their broad application. Thus, to ensure cost-effective operation of membrane separation processes, the improved elucidation of membrane fouling and establishment of e...

Journal: :پژوهش های علوم و صنایع غذایی ایران 0
(pages 63-72) h. mirsaeedghazi z. emam-djomeh s.m. mousavi a. aroujalian m. navidbakhsh

the pomegranate juice with high nutritional value has turbid appearance that makes it difficult to preserve and concentrate. microfiltration is useful process which can clarify it. one of the most important problems in this process is fouling phenomenon which affected by several parameters. the effects of fluid velocity, transmembrane pressure, membrane type and its pore size on membrane foulin...

Hamed Azami Mahsa Kazemzadeh Mohamad reza Mehrnia, Mohammad hosein Sarrafzadeh Sara Mafirad Seyed Siavash Madaeni

This paper presents the results of an investigation on the effects of concentration of cations on activated sludge properties and membrane fouling in submerge membrane bioreactors. The working volume of the experimental setup was two liters. The cellulose acetate membrane was immersed in the bioreactor. The flocculability, settling properties and fouling propensity of activated sludge was measu...

Journal: :journal of chemical and petroleum engineering 2011
hamed azami mohamad reza mehrnia mohammad hosein sarrafzadeh sara mafirad mahsa kazemzadeh

this paper presents the results of an investigation on the effects of concentration of cations on activated sludge properties and membrane fouling in submerge membrane bioreactors. the working volume of the experimental setup was two liters. the cellulose acetate membrane was immersed in the bioreactor. the flocculability, settling properties and fouling propensity of activated sludge was measu...

D. Ariono I.G. Wenten P.T.P. Aryanti S. Subagjo

In this study, the ultrafiltration membrane for humic substance removal was prepared by blending polysulfone with a high concentration of PEG400 as additives. The influences of the additive to the fouling resistance capability and humic substances rejection of the polysulfone membrane were investigated. The addition of 35%wt of PEG400 concentration improved the pure water flux up to 200, but re...

2017
A U Krupp I M Griffiths C P Please

Membrane fouling during particle filtration occurs through a variety of mechanisms, including internal pore clogging by contaminants, coverage of pore entrances and deposition on the membrane surface. In this paper, we present an efficient method for modelling the behaviour of a filter, which accounts for different retention mechanisms, particle sizes and membrane geometries. The membrane is as...

Journal: :journal of membrane science and research 0
fatemeh esfandian membrane research group, nanobiotechnology institute, babol university of technology, babol, iran majid peyravi membrane research group, nanobiotechnology institute, babol university of technology, babol, iran ali asqar qoreyshi membrane research group, nanobiotechnology institute, babol university of technology, babol, iran mohsen jahanshahi membrane research group, nanobiotechnology institute, babol university of technology, babol, iran

one of the barriers during whey filtration using uf membrane is the fouling phenomenon of the membrane, which is caused by whey proteins. in this work, the uf membranes were prepared using polysufone (psf), dimethyl formamide (dmf), 1 wt.% poly vinyl pyrrolidone (pvp) and different concentrations of licl via phase inversion induced by immersion precipitation. the prepared membranes were charact...

Journal: :advances in environmental technology 0
mohammad j nosratpour isfahan university of technology morteza sadeghi isfahan university of technology keikhosro karimi isfahan university of technology saeid ghesmati isfahan university of technology

a membrane bioreactor (mbr) system based on a dead-end immersed hollow fiber membrane and filamentous fungus aspergillus oryzae were used for treatment of baker’s yeast wastewater. the fungus was adapted to the wastewater in the bioreactor for two weeks before starting the continuous process. average organic loading rate of 4.2 kg cod/m3.d was entered the bioreactor. mbr system was able to redu...

ژورنال: علوم آب و خاک 2006
سیدعلی مرتضوی, , سیدمحمدعلی رضوی, , سیدمحمود موسوی, ,

In this study, the effect of transmembrane pressure (TMP) on flux decline and protein rejection due to concentration polarization and fouling (adsorption) resistances during ultrafiltration of reconstituted skimmilk was investigated. UF experiments were carried out using a pilot plant unit equipped with spiral wound module and polysulfonamide UF membrane. A three-stage experimental strategy bas...

Hossein Mirsaeedghazi, Mohammad Aboonajmi Mohammad Hossein Kianmehr Morteza Aliasghari Aghdam,

Microfiltration can clarify pomegranate juice; however, fouling is a limiting phenomenon in the process. In current work ultrasound was applied above and below the membrane surface to reduce fouling after removing temperature effect. A hydrophilic mixed cellulose ester membrane with pore size of 0.45 μm was used in lab scale flat sheet module. Membrane module was placed above and below the ultr...

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