نتایج جستجو برای: Stirred tank bioreactor

تعداد نتایج: 23644  

2007

Cell Culture Bioreactors Basic Types of Bioreactors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Stirred Tank (Well Mixed) vs. Tubular Reactor (Plug Flow) . . . . . . . . . . . . . . . . . 3 Segregated Bioreactors (Dead Zone Present) Compartmentalized Bioreactors . . 4 Implication When Growth or Reaction Occurs in the Reactor . . . . . ....

Journal: :Journal of biotechnology 2007
Arnd Knoll Stefan Bartsch Bernward Husemann Philip Engel Kirsten Schroer Betina Ribeiro Christoph Stöckmann Juri Seletzky Jochen Büchs

This study demonstrates the applicability of pressurized stirred tank bioreactors for oxygen transfer enhancement in aerobic cultivation processes. The specific power input and the reactor pressure was employed as process variable. As model organism Escherichia coli, Arxula adeninivorans, Saccharomyces cerevisiae and Corynebacterium glutamicum were cultivated to high cell densities. By applying...

بختیاری, روناک , رحیمی فروشانی, عباس , موسوی, سید حمیدرضا , پورآقا شاهنشین, حمیدرضا , پورمند, محمد رضا , گلبابایی, فریده ,

Introduction: Volatile organic compounds such as xylene, which are the main constituents of the oil and petrochemical industries, have serious impacts on health and can cause adverse effects on the environment. It is clear that release of these compounds into the environment should be controlled. The two-phases partitioning stirred tank bio-reactor is one of the newest methods for treating thes...

Journal: :Biotechnology and bioengineering 2010
Ralf Hortsch Ansgar Stratmann Dirk Weuster-Botz

A novel milliliter-scale stirred tank bioreactor was developed for the cultivation of mycelium forming microorganisms on a 10 milliliter-scale. A newly designed one-sided paddle impeller is driven magnetically and rotates freely on an axis in an unbaffled reaction vessel made of polystyrene. A rotating lamella is formed which spreads out along the reactor wall. Thus an enhanced surface-to-volum...

رحیمی فروشانی, عباس , پورآقا شاهنشین, حمیدرضا , پورمند, محمدرضا , کریمی, علی , گلبابایی, فریده ,

Introduction: There are different methods for controlling gaseous pollutants formed from air pollution sources that one of the most economical and efficient of them, is bio-filtration. The purpose of this study is Toluene removal from airstream by using the pure Pseudomonas putida bacteria as a fluidized bed in a two phase partitioning stirred tank bioreactor.Toluene ( Metyle benzene) is one of...

Journal: :international journal of occupational hygiene 0
ali karimi occupational health department, school of public health and nutrition, shiraz university of medical sciences, shiraz, iran and occupational health eng. department, school of public health, tehran university of medical sciences, tehran, iran. farideh golbabaei occupational health eng. department, school of public health, tehran university of medical sciences, tehran, iran. mohammadreza mehrnia biotechnology group, school of chemical engineering, university college of engineering, university of tehran, tehran, iran. kazem mohammad epidemiology and biostatistics department, school of public health, tehran university of medical sciences, tehran, iran. masoud neghab occupational health department, school of public health and nutrition, shiraz university of medical sciences, shiraz, iran. ahmad nikpey occupational health department, school of public health, qazvin university of medical sciences, qazvin, iran.

a laboratory stirred tank bioreactor with six single and dual-impeller configurations was tested to obtain the optimum operating conditions for future biological processes. six impeller combinations consisting of three basic impeller types, namely rushton turbine (rt), pitched 4blade (p4b) and pitched 2blade (p2b) downward flow were investigated in 1.77 l bioreactor working volume. power consum...

بختیاری, روناک , محمد, کاظم , نقاب, مسعود , پورمند, محمد رضا , کریمی, علی , گلبابایی, فریده ,

Introduction: Human and environment exposed to harmful factors, as the result of industrial pollutants. Volatile organic compounds (VOCs) play important role in photochemical reactions in troposphere layer of atmosphere and results in production of ozone and photochemical oxidants. .Material and Method: In this study, a miniature stirred tank bioreactor was designed for treatment of waste gas...

2009
Ieroham S. Baruch Carlos-Roman Mariaca-Gaspar

The aim of this paper is to propose a new Kalman Filter Recurrent Neural Network (KFRNN) topology and a recursive Levenberg-Marquardt (L-M) algorithm of its learning capable to estimate states and parameters of a highly nonlinear Continuous Stirred Tank Bioreactor (CSTR) in noisy environment. The estimated parameters and states obtained by the proposed KFRNN identifier are used to design an ind...

2010
Mohd Azmir Arifin Maizirwan Mel Mohamed Ismail Abdul Karim Aini Ideris

The aim of this study is to prepare a model for the production of Newcastle disease virus (NDV) lentogenic F strain using cell culture in bioreactor for live attenuated vaccine preparation. In this study, firstly we investigated the growth of Vero cells in several culture media. The maximum cell number was yielded by culture of Vero cells in Dulbecco's Modified Eagle Medium (DMEM) which was 1.9...

Journal: :iranian journal of biotechnology 2007
marjan varedi kolaei ramin karimzadeh seyed abbas shojaosadati jafar towfighi

in this work, mathematical modeling of microbial(trichosporon sp.) biomass production in a stirred tankbioreactor and in an external airlift bioreactor has beeninvestigated. a model based on a tanks-in-seriesmodel without back-flow has been used to simulate theproduction of single cell protein in the external airliftbioreactor under an unsteady condition and withoutoxygen limitation, utilizing ...

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