Continuous Ethanol Production with a Membrane Bioreactor at High Acetic Acid Concentrations
نویسندگان
چکیده
منابع مشابه
Continuous Ethanol Production with a Membrane Bioreactor at High Acetic Acid Concentrations
The release of inhibitory concentrations of acetic acid from lignocellulosic raw materials during hydrolysis is one of the main concerns for 2nd generation ethanol production. The undissociated form of acetic acid can enter the cell by diffusion through the plasma membrane and trigger several toxic effects, such as uncoupling and lowered intracellular pH. The effect of acetic acid on the ethano...
متن کاملlactic acid production with in situ extraction in membrane bioreactor
background and objective: lactic acid is widely used in the food, chemical and pharmaceutical industries. the major problems associated with lactic acid production are substrate and end-product inhibition, and by-product formation. membrane technology represents one of the most effective processes for lactic acid production. the aim of this work is to increase cell density and lactic acid produ...
متن کاملContinuous ethanol production from concentrated wood hydrolysates in an internal membrane-filtration bioreactor.
Continuous culture for the production of ethanol from wood hydrolysate was carried out in an internal membrane-filtration bioreactor. The hydrolysate medium was sterilized at a relatively low temperature of 60 degrees C with the intention of reducing the formation of inhibitory compounds during the sterilization. The maximum ethanol concentration and productivity obtained in this study were 76....
متن کاملEffect of acetic acid on ethanol production by Zymomonas mobilis mutant strains through continuous adaptation
BACKGROUND Acetic acid is a predominant by-product of lignocellulosic biofuel process, which inhibits microbial biocatalysts. Development of bacterial strains that are tolerant to acetic acid is challenging due to poor understanding of the underlying molecular mechanisms. RESULTS In this study, we generated and characterized two acetic acid-tolerant strains of Zymomonas mobilis using N-methyl...
متن کاملAcetic Acid Production from Ethanol by Fluorescent Pseudomonads.
Apart from the observation by Alsberg (1911) that gluconic acid is produced from glucose by Phytomonas savastanoi, the oxidative metabolism of fluorescent pseudomonads has received little attention until very recently. For the most part it has been tacitly assumed that these org Ims, by virtue of their obligately aerobic nature, carry out a complete mineralization of organic substrates (den Doo...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Membranes
سال: 2014
ISSN: 2077-0375
DOI: 10.3390/membranes4030372