Treatment of arsenic contaminated water in a laboratory scale up-flow bio-column reactor

2008 ◽  
Vol 153 (1-2) ◽  
pp. 136-145 ◽  
Author(s):  
P. Mondal ◽  
C.B. Majumder ◽  
B. Mohanty
Keyword(s):  
Scale Up ◽  
Laboratory Scale ◽  
Contaminated Water ◽  
Column Reactor

scholarly journals An Improved Process for the Preparation of the p-tert-butylcalix[4]arene: from Laboratory-scale Synthesis to Scale-up Development

2016 ◽  
Vol 3 (2) ◽  
pp. 134-146
Author(s):  
A. A. Fatyanova ◽  
A. S. Gusak ◽  
P. E. Prokhorova ◽  
O. A. Trofimova
Keyword(s):  
Scale Up ◽  
Laboratory Scale

scholarly journals Influence of Light Intensity and Temperature on Cultivation of Microalgae Desmodesmus Communis in Flasks and Laboratory-Scale Stirred Tank Photobioreactor

2015 ◽  
Vol 52 (2) ◽  
pp. 59-70 ◽  
Author(s):  
J. Vanags ◽  
L. Kunga ◽  
K. Dubencovs ◽  
V. Galvanauskas ◽  
O. Grīgs
Keyword(s):  
Light Intensity ◽  
Shake Flask ◽  
Scale Up ◽  
Biomass Concentration ◽  
Biomass Productivity ◽  
Pilot Scale ◽  
Laboratory Scale ◽  
Stirred Tank ◽  
Light Limitation ◽  
Maximum Biomass

Abstract Optimization of the microalgae cultivation process and of the bioprocess in general traditionally starts with cultivation experiments in flasks. Then the scale-up follows, when the process from flasks is transferred into a laboratory-scale bioreactor, in which further experiments are performed before developing the process in a pilot-scale reactor. This research was done in order to scale-up the process from a 0.4 1 shake flask to a 4.0 1 laboratory-scale stirred-tank photobioreactor for the cultivation of Desmodesmus (D.) communis microalgae. First, the effect of variation in temperature (21-29 ºC) and in light intensity (200-600 μmol m-2s-1) was studied in the shake-flask experiments. It was shown that the best results (the maximum biomass concentration of 2.72 g 1-1 with a specific growth rate of 0.65 g g-1d-1) can be achieved at the cultivation temperature and light intensity being 25 °C and 300 μmol m2s-1, respectively. At the same time, D. communis cultivation under the same conditions in stirred-tank photobioreactor resulted in average volumetric productivities of biomass due to the light limitation even when the light intensity was increased during the experiment (the maximum biomass productivity 0.25 g 1-1d-1; the maximum biomass concentration 1.78 g 1-1).

Granular Sludge Formation in the Anaerobic Expanded Micro-Carrier Bed Process

1989 ◽  
Vol 21 (4-5) ◽  
pp. 109-120 ◽  
Author(s):  
M. Yoda ◽  
M. Kitagawa ◽  
Y. Miyaji
Keyword(s):  
Scale Up ◽  
Granular Sludge ◽  
Laboratory Scale ◽  
Upflow Anaerobic Sludge Blanket ◽  
Anaerobic Sludge ◽  
Expanded Bed ◽  
Sludge Formation ◽  
Support Materials ◽  
Anaerobic Sludge Blanket

The anaerobic expanded micro-carrier bed (MCB) process, which utilizes fine (50-100 microns) support materials as expanded bed media, was found to have the ability to cultivate granular sludge similar to that formed in the upflow anaerobic sludge blanket (UASB) process. Two laboratory-scale MCB reactors were studied with VFA and glucose wastewaters to clarify the role of the micro-carrier and the influence of substrates on granular sludge formation. Based on these results, a scale-up model with a reactor volume of 800 1 was successfully operated using molasses wastewater to demonstrate the feasibility of granular sludge formation in the MCB process.

scholarly journals Effects of Scale-up Factor on Characteristics of Methane Dehydrogenative Coupling Using a Thermal Diffusion Column Reactor.

2002 ◽  
Vol 45 (1) ◽  
pp. 10-14
Author(s):  
Ken-ichi SUZUKI ◽  
Tatsuya TAKAMATSU ◽  
Yoshiaki SEKIGUCHI ◽  
Motoki KOBAYASHI ◽  
Kaoru ONOE ◽  
...  
Keyword(s):  
Thermal Diffusion ◽  
Scale Up ◽  
Column Reactor ◽  
Dehydrogenative Coupling ◽  
Diffusion Column

Experimental and CFD Evaluation of a Bubble Column Reactor

2010 ◽  
Author(s):  
Sean M. McGuffie ◽  
Mike A. Porter ◽  
Dennis H. Martens
Keyword(s):  
Experimental Data ◽  
Bubble Column ◽  
Scale Up ◽  
Bubble Column Reactor ◽  
Column Reactor ◽  
Cfd Models ◽  
Design Variables ◽  
Input Parameters ◽  
Multi Phase Flow ◽  
Multi Phase

During the scale-up design of a slurry bubble column reactor from a pilot demonstration facility to a production reactor, the design team used computational fluid dynamics (CFD) as a tool to quantify design variables, such as gas holdup and liquid velocities/structural pressures within the reactor. At the time of the analysis, all available physics models for modeling the multi-phase flow had significant limitations that would require “tuning” of the CFD input parameters to ensure confidence in the results. The authors initially conducted a literature search to find data that could be used to calibrate the model. While a wide variety of literature is available, none provided the exact data required for model calibration. For this reason, the authors constructed a test column and performed experiments to derive data for tuning the CFD models. Statistical analysis of the experimental data provided distributions on the input parameters of interest. CFD studies were then used to tune the CFD input parameters to match the experimental data. A correlation was developed, tested and verified. This correlation was then used to provide confidence in the results of the design analysis performed on the scaled up reactor.

scholarly journals A Newly Designed Automatically Controlled, Sterilizable Flat Panel Photobioreactor for Axenic Algae Culture

2021 ◽  
Vol 9 ◽  
Author(s):  
Tobias Fuchs ◽  
Nathanael D. Arnold ◽  
Daniel Garbe ◽  
Simon Deimel ◽  
Jan Lorenzen ◽  
...  
Keyword(s):  
Global Climate ◽  
Scale Up ◽  
Food Additives ◽  
Academic Research ◽  
Laboratory Scale ◽  
Flat Panel ◽  
Engineering Technology ◽  
Control Technologies ◽  
Industrial Standards ◽  
Gas Lift

In context of the global climate change, microalgae processes are gaining momentum as a biotechnological tool for direct fixation and valorization of greenhouse gases. Algae have the metabolic capacity to photosynthetically convert CO2 into high value products, such as food additives, under economic boundary conditions. High cost, commercial flat panel gas-lift bioreactors for microalgae cultivation at laboratory scale provide either small volumes or no sterile operation, which limits academic research. This brief report presents initial data for a new type of sterile operating flat panel gas-lift bioreactor with a unique asymmetrical U-shape. It utilizes automatable process control technologies that adhere to industrial standards to enhance data reproducibility and aid industrial scale up. The practicability was demonstrated using a Chlorella sorokiniana cultivation, which showed the typical growth behavior. Due to the sophisticated implemented control engineering technology, pivotal parameters as pH and temperature can be determined within a range of ±0.1 units, which was confirmed experimentally. The new flat panel gas-lift photobioreactor presented in this brief report fills the technology gap at laboratory scale with an autoclavable volume of 7.2 L. Moreover, it is easy to rebuild by means of the hereby provided blueprint, while exhibiting a six-fold cost reduction compared to commercially available flat panel photobioreactors.

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