Ethanol production by anaerobic thermophilic bacteria: Kinetics in fed-batch cultures ofClostridium thermohydrosulfuricum

1989 ◽  
Vol 11 (6) ◽  
pp. 443-448 ◽  
Author(s):  
Fatiou Toukourou ◽  
Luiz Donaduzzi ◽  
Andr� Miclo ◽  
Pierre Germain
Keyword(s):  
Ethanol Production ◽  
Thermophilic Bacteria ◽  
Fed Batch ◽  
Batch Cultures

scholarly journals Production of Ethanol from Sugars and Lignocellulosic Biomass byThermoanaerobacterJ1 Isolated from a Hot Spring in Iceland

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Jan Eric Jessen ◽  
Johann Orlygsson
Keyword(s):  
Ethanol Production ◽  
Lignocellulosic Biomass ◽  
Hot Spring ◽  
Thermophilic Bacteria ◽  
Product Formation ◽  
Initial Glucose Concentration ◽  
Batch Cultures ◽  
Ethanol Yields ◽  
High Ethanol ◽  
Pretreated Biomass

Thermophilic bacteria have gained increased attention as candidates for bioethanol production from lignocellulosic biomass. This study investigated ethanol production byThermoanaerobacterstrain J1 from hydrolysates made from lignocellulosic biomass in batch cultures. The effect of increased initial glucose concentration and the partial pressure of hydrogen on end product formation were examined. The strain showed a broad substrate spectrum, and high ethanol yields were observed on glucose (1.70 mol/mol) and xylose (1.25 mol/mol). Ethanol yields were, however, dramatically lowered by adding thiosulfate or by cocultivating strain J1 with a hydrogenotrophic methanogen with acetate becoming the major end product. Ethanol production from 4.5 g/L of lignocellulosic biomass hydrolysates (grass, hemp stem, wheat straw, newspaper, and cellulose) pretreated with acid or alkali and the enzymes Celluclast and Novozymes 188 was investigated. The highest ethanol yields were obtained on cellulose (7.5 mM·g−1) but the lowest on straw (0.8 mM·g−1). Chemical pretreatment increased ethanol yields substantially from lignocellulosic biomass but not from cellulose. The largest increase was on straw hydrolysates where ethanol production increased from 0.8 mM·g−1to 3.3 mM·g−1using alkali-pretreated biomass. The highest ethanol yields on lignocellulosic hydrolysates were observed with hemp hydrolysates pretreated with acid, 4.2 mM·g−1.

The influence of the initial concentrations of glucose and yeast extract on the ethanolic fermentation by Pachysolen tannophilus

1990 ◽  
Vol 55 (3) ◽  
pp. 854-866 ◽  
Author(s):  
Rodríguez V. Bravo ◽  
Rubio F. Camacho ◽  
Villasclaras S. Sánchez ◽  
Vico M. Castro
Keyword(s):  
Cell Growth ◽  
Ethanol Production ◽  
Yeast Extract ◽  
Culture Medium ◽  
Ethanolic Fermentation ◽  
Pachysolen Tannophilus ◽  
Significant Component ◽  
Batch Cultures

The ethanolic fermentation in batch cultures of Pachysolen tannophilus was studied experimentally varying the initial concentrations of two of the components in the culture medium: glucose between 0 and 200 g l-1 and yeast extract between 0 and 8 g l-1. The yeast extract appears to be a significant component both in cell growth and for ethanol production.

Modeling and parameter identification of microbial bioconversion in fed-batch cultures

2008 ◽  
Vol 18 (5) ◽  
pp. 458-464 ◽  
Author(s):  
Gang Wang ◽  
Enmin Feng ◽  
Zhilong Xiu
Keyword(s):  
Parameter Identification ◽  
Fed Batch ◽  
Batch Cultures

Using Alternating Tangential Flow with Fed-Batch Cultures

2019 ◽  
Vol 39 (10) ◽  
pp. 54-56
Author(s):  
Shashi Kudugunti ◽  
Daniel Diggins ◽  
Jyoti Amatya ◽  
Jamie Peyser
Keyword(s):  
Fed Batch ◽  
Batch Cultures ◽  
Tangential Flow

scholarly journals A novel process-based model of microbial growth: self-inhibition in Saccharomyces cerevisiae aerobic fed-batch cultures

2015 ◽  
Vol 14 (1) ◽  
Author(s):  
Stefano Mazzoleni ◽  
Carmine Landi ◽  
Fabrizio Cartenì ◽  
Elisabetta de Alteriis ◽  
Francesco Giannino ◽  
...  
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Microbial Growth ◽  
Fed Batch ◽  
Batch Cultures

Run-to-Run Optimization of Fed-Batch Fermentation for Ethanol Production

2010 ◽  
Vol 33 (9) ◽  
pp. 1488-1494 ◽  
Author(s):  
W.-H. Huang ◽  
G. S. Shieh ◽  
F.-S. Wang
Keyword(s):  
Ethanol Production ◽  
Batch Fermentation ◽  
Fed Batch ◽  
Fed Batch Fermentation
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