scholarly journals The biotechnological production of xanthan on vegetable oil industry wastewaters (part II): Kinetic modelling and process simulation

2018 ◽  
Vol 24 (2) ◽  
pp. 127-137
Author(s):  
Bojana Bajic ◽  
Damjan Vucurovic ◽  
Sinisa Dodic ◽  
Zorana Roncevic ◽  
Jovana Grahovac ◽  
...  
Keyword(s):  
Carbon Source ◽  
Vegetable Oil ◽  
Process Simulation ◽  
Kinetic Modelling ◽  
Oil Industry ◽  
Simulation Software ◽  
Production Facility ◽  
Wide Range ◽  
Xanthan Production ◽  
Kinetics Of

Xanthan is a microbial biopolymer with a wide range of industrial applications and it is expected that the demand for this product will significantly increase in the coming decade and for this reason it is important to constantly work on improving all aspects of this biotechnological process. The aim of this research was to examine the kinetics of batch cultivation of Xanthomonas campestris ATCC 13951 using vegetable oil industry wastewaters as a basis for the cultivation medium, in order to produce the biopolymer xanthan. Kinetic modelling is very important for process control, reducing process costs and increasing product quality. By performing xanthan production on a medium with optimized content, the experimental values of content of biomass, carbon source and the desired product were obtained and used to determine the kinetics of biosynthesis. In order to describe biomass multiplication, product formation and carbon source consumption, the logistics, the Luedeking-Piret and modified Luedeking- -Piret equation, respectively, were successfully used. Additionally, using process simulation software (SuperPro Designer?), a process and cost model for a xanthan production facility was developed. The developed model represents the basis for a 21,294.29 and 23,107.97 kg/year xanthan production facility, which uses a vegetable oil industry wastewater-based medium and a semi-synthetic medium. The simulation model of the suggested xanthan production process, developed and based on defined kinetic models, represents an excellent basis for its further improvement and for increasing its efficiency.

scholarly journals The biotechnological production of xanthan on vegetable oil industry wastewaters. Part I: Modelling and optimization

2017 ◽  
Vol 23 (3) ◽  
pp. 329-339 ◽  
Author(s):  
Bojana Bajic ◽  
Damjan Vucurovic ◽  
Sinisa Dodic ◽  
Zorana Roncevic ◽  
Jovana Grahovac ◽  
...  
Keyword(s):  
Carbon Source ◽  
Vegetable Oil ◽  
Xanthomonas Campestris ◽  
Phosphorus Content ◽  
Oil Industry ◽  
Raw Material ◽  
Nitrogen And Phosphorus ◽  
Biotechnological Production ◽  
Xanthan Production ◽  
Industry Wastewater

The aim of this research was to examine the possibility of using the vegetable oil industry wastewater as the basis of the cultivation media for xanthan production, using Xanthomonas campestris ATCC 13951, in order to reuse the wastewater obtained in one industry as a raw material in another. Furthermore, the aim was to optimize the composition of wastewater based media in terms of carbon, nitrogen, and phosphorus content. Experiments were carried out in accordance with the Box-Behnken design with three factors on three levels (glucose: 10.00- -30.00 g/L; nitrogen: 0.02-0.20 g/L; phosphorus: 0.0045-0.045 g/L) and three repetitions at the central point. The success of biosynthesis was assessed by analysing broths to determine xanthan yield, cultivation broth apparent viscosity, residual carbon, nitrogen, and phosphorus content. Graphical and numerical optimization using response surface methodology was performed to determine the optimal content values of the carbon source, nitrogen, and phosphorus content. The results of graphical optimization suggest that for the defined response interval values, the defined model predicts that the xanthan production is possible when 15.00-16.00 g/L of the carbon source, 0.02-0.09 g/L of nitrogen and 0.01-0.02 g/L of phosphorus are added to the media that as a basis contains vegetable oil industry wastewater.

Kinetics of Batch Anaerobic Digestion of Vegetable Oil Wastewater

2014 ◽  
Vol 2014 (2) ◽  
pp. 1-10 ◽  
Author(s):  
Chinenyenwa Nweke ◽  
◽  
Philomena Igbokwe ◽  
Joseph Nwabanne ◽  
◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Vegetable Oil ◽  
Kinetics Of ◽  
Oil Wastewater

Scintigraphic studies in rats. Kinetics of insulin analogues covering wide range of receptor affinities

Diabetes ◽  
1991 ◽  
Vol 40 (5) ◽  
pp. 628-632 ◽  
Author(s):  
I. Jensen ◽  
V. Kruse ◽  
U. D. Larsen
Keyword(s):  
Insulin Analogues ◽  
Wide Range ◽  
Kinetics Of

Kinetic modelling of reactions for the synthesis of 2-methyl-5-ethyl pyridine

2021 ◽  
Author(s):  
Emanuele Moioli ◽  
Leo Schmid ◽  
Peter Wasserscheid ◽  
Hannsjoerg Freund
Keyword(s):  
Kinetic Modelling ◽  
Acid Catalyst ◽  
Acid Catalyzed ◽  
Catalyzed Reactions ◽  
Kinetics Of

The kinetics of the acid catalyzed reactions of acetaldehyde ammonia trimer (AAT) and paraldehyde (para) to 2-methyl-5-ethyl pyridine (MEP) in the presence of an acid catalyst were investigated systematically. A...

scholarly journals The Vegetable Oil Industry

1922 ◽  
Vol 14 (9) ◽  
pp. 809-809 ◽  
Author(s):  
DAVID. WESSON
Keyword(s):  
Vegetable Oil ◽  
Oil Industry

scholarly journals Kinetic modelling of NO heterogeneous radiation-catalytic oxidation on the TiO2 surface in humid air under the electron beam irradiation

Nukleonika ◽  
2017 ◽  
Vol 62 (3) ◽  
pp. 235-240 ◽  
Author(s):  
Henrietta Nichipor ◽  
Yongxia Sun ◽  
Andrzej G. Chmielewski
Keyword(s):  
Electron Beam ◽  
Catalytic Oxidation ◽  
Removal Efficiency ◽  
Electron Beam Irradiation ◽  
Kinetic Modelling ◽  
Water Concentration ◽  
Beam Irradiation ◽  
Humid Air ◽  
Kinetics Of ◽  
Influential Parameters

Abstract Theoretical study of NOx removal from humid air by a hybrid system (catalyst combined with electron beam) was carried out. The purpose of this work is to study the possibility to decrease energy consumption for NOx removal. The kinetics of radiation catalytic oxidation of NO on the catalyst TiO2 surface under electron beam irradiation was elaborated. Program Scilab 5.3.0 was used for numerical simulations. Influential parameters such as inlet NO concentration, dose, gas fl ow rate, water concentration and catalyst contents that can affect NOx removal efficiency were studied. The results of calculation show that the removal efficiency of NOx might be increased by 8-16% with the presence of a catalyst in the gas irradiated field.

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