Kinetic analysis of an anaerobic fixed-film fixed bed-reactor treating wastewater arising from production of a chemically synthesized pharmaceutical

2012 ◽  
Vol 33 (11) ◽  
pp. 1261-1270 ◽  
Author(s):  
Abhijit M. Deshpande ◽  
Shanta Satyanarayan ◽  
Ramakant
Keyword(s):  
Kinetic Analysis ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Fixed Film

Treatment of Spent Broth from an Antibiotic Manufacturing Unit Using Anaerobic Fixed Film Fixed Bed Reactor

2003 ◽  
Vol 38 (9) ◽  
pp. 1971-1979 ◽  
Author(s):  
Shanta Satyanarayan ◽  
Rita S. Dhodapkar ◽  
R. D. Vyas ◽  
S. N. Kaul
Keyword(s):  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Fixed Film

Modeling and kinetic analysis of CO2 hydrogenation using a Mn and K-promoted Fe catalyst in a fixed-bed reactor

2013 ◽  
Vol 3-4 ◽  
pp. 56-64 ◽  
Author(s):  
Heather D. Willauer ◽  
Ramagopal Ananth ◽  
Matthew T. Olsen ◽  
David M. Drab ◽  
Dennis R. Hardy ◽  
...  
Keyword(s):  
Kinetic Analysis ◽  
Fixed Bed ◽  
Co2 Hydrogenation ◽  
Fixed Bed Reactor ◽  
Fe Catalyst

Sulfate Reduction in Acidogenic Phase Anaerobic Digestion

1988 ◽  
Vol 20 (11-12) ◽  
pp. 345-351 ◽  
Author(s):  
M. A. M. Reis ◽  
L. M. D. Gonçalves ◽  
M. J. T. Carrondo
Keyword(s):  
Anaerobic Digestion ◽  
Sulfate Reduction ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Continuous Stirred Tank Reactor ◽  
Acetic Acid Production ◽  
Sulfate Removal ◽  
Fermentative Bacteria ◽  
Fixed Film ◽  
Acidogenic Phase

The acidogenic phase of a two-stage anaerobic digestion process using distillery molasses slops effluent with high sulfate concentrations (4.2-5.1 g/l) was investigated. Removal of sulfate was studied at pH 5.8, 6.2, 6.6 and in two different reactors: continuous stirred tank reactor and an upflow fixed film fixed bed reactor. Batch experiments were carried out to obtain the maximum specific growth rates of sulfate reducing bacteria (SRB) at the above mentioned pH values. The biological sulfate removal increased with pH and so did the acetic acid production from the fermentative bacteria and SRB. For the same pH and hydraulic retention time the sulfate reduction was more efficient in the fixed film reactor than in the CSTR. The soluble sulfides from the sulfate reduction presented at the acidogenic reactor effluent were precipitated before the methanogenic phase to avoid biogas contamination and methanogenic bacteria inhibition; under such conditions, sulfide concentrations in the biogas thus produced were very low and high methane volumetric rates of production were achieved.

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