نتایج جستجو برای: loop bioreactor

تعداد نتایج: 136257  

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2010
fatemeh yazdian seyed abbas shojaosadati mohsen nosrati ebrahim vasheghani-farahani mohammad reza mehrnia

the performance of a forced-liquid vertical tubular loop bioreactor (vtlb), a forced-liquid horizontal tubular loop bioreactor (htlb) and a gas-induced external airlift loop bioreactor (ealb) were compared for production of biomass from natural gas. hydrodynamic characteristics and mass transfer coefficients were determined as functions of design parameters, physical properties of gases as well...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2012
fatemeh yazdian, sayed abbas shojaosadati mohsen nosrati mahdi pesaran haji abbas ebrahim vasheghani-farahani

the mixing behavior of the gas-liquid phase in three loop bioreactors was investigated. a gas-induced external airlift loop bioreactor (ealb), a forced-liquid vertical tubular loop bioreactor (vtlb) and a forced-liquid horizontal tubular loop bioreactor (htlb) were used for mixing studies as well as biomass production from natural gas. the effect of design parameters, riser to downcomer cross s...

Ebrahim Vasheghani-Farahani Fatemeh Yazdian, Mahdi Pesaran Haji Abbas Mohsen Nosrati Sayed Abbas Shojaosadati,

The mixing behavior of the gas-liquid phase in three loop bioreactors was investigated. A gas-induced External Airlift Loop Bioreactor (EALB), a forced-liquid Vertical Tubular Loop Bioreactor (VTLB) and a forced-liquid Horizontal Tubular Loop Bioreactor (HTLB) were used for mixing studies as well as biomass production from natural gas. The effect of design parameters, riser to downcomer cro...

Journal: :international journal of environmental research 0
m. ince department of environmental engineering, gebze institute of technology, gebze, turkey, 41400 e. senturk department of environmental engineering, gebze institute of technology, gebze, turkey, 41400 g. onkal engin department of environmental engineering, yildiz technical university, esenler, istanbul, turkey, 34220 b. keskinler department of environmental engineering, gebze institute of technology, gebze, turkey, 41400

since treatment of landfill leachate is quite complicated, there is a need to develop a system thatis capable of providing high treatment efficiencies. in this study, the treatment performance of a jet - loopmembrane bioreactor (jlmb) operated at different organic loading rates was investigated by observing thechanges in chemical oxygen demand (cod), total kjehldahl nitrogen (tkn) and total amm...

Journal: :international journal of environmental research 2013
m. ince e. senturk g. onkal engin b. keskinler

since treatment of landfill leachate is quite complicated, there is a need to develop a system thatis capable of providing high treatment efficiencies. in this study, the treatment performance of a jet - loopmembrane bioreactor (jlmb) operated at different organic loading rates was investigated by observing thechanges in chemical oxygen demand (cod), total kjehldahl nitrogen (tkn) and total amm...

Ebrahim Vasheghani-Farahani Fatemeh Yazdian Mohammad Reza Mehrnia, Mohsen Nosrati Seyed Abbas Shojaosadati,

The performance of a forced-liquid Vertical Tubular Loop Bioreactor (VTLB), a forced-liquid Horizontal Tubular Loop Bioreactor (HTLB) and a gas-induced External Airlift Loop Bioreactor (EALB) were compared for production of biomass from natural gas. Hydrodynamic characteristics and mass transfer coefficients were determined as functions of design parameters, physical properties of gases as ...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2009
fatemeh yazdian seyed abbas shojaosadati mohsen nosrati mahdi pesaran hajiabbas khosro malek khosravi

a dissolved methane sensor based on silicone tube was designed, constructed and optimized.the silicone tube diameter, silicone tube length and helium flow rate (as the carrier gas(were considered as process parameters to be optimized.a continuous stream of helium (50 ml/min) was directed through the tubing, sweeping out the dissolved methane which diffused through the walls of the tubing from t...

Ali Akbar Seyfkordi Hosein Ghahremani, Mahmood Reza Pishvaie Manouchehr Vossoughi

Modeling of fermentation processes is so complicated and uncertain; therefore it is necessary to provide a robust and appropriate dynamic optimization method. In order to obtain the maximum amount of yeast (Saccharomyces cerevisiae), the bioreactor must be operated under optimal conditions. To determine substrate feeding in a fed-batch bioreactor, a simulated annealing (SA) approach was examine...

2003
S. J. HAN B. H. TAN

A gas-liquid-solid inverse  uidization airlift bioreactor was proposed by combining advantages of external-loop airlift reactors and inverse  uidized beds. This airlift bioreactor comprises a gas-liquid riser, a gas separator, a liquid-solid inverse  uidized downcomer and a bottom connector. The effects of the gas velocity and the particle loading on the gas holdup in the riser and the liqui...

Journal: :iranian journal of biotechnology 2009
hosein ghahremani mahmood reza pishvaie manouchehr vossoughi ali akbar seyfkordi

modeling of fermentation processes is so complicated and uncertain; therefore it is necessary to provide a robust and appropriate dynamic optimization method. in order to obtain the maximum amount of yeast (saccharomyces cerevisiae), the bioreactor must be operated under optimal conditions. to determine substrate feeding in a fed-batch bioreactor, a simulated annealing (sa) approach was examine...

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