Biohydrogen and carboxylic acids production from wheat straw hydrolysate.

نویسندگان

  • Konstantinos Chandolias
  • Sindor Pardaev
  • Mohammad J Taherzadeh
چکیده

Hydrolyzed wheat straw was converted into carboxylic acids and biohydrogen using digesting bacteria. The fermentations were carried out using both free and membrane-encased thermophilic bacteria (55°C) at various OLRs (4.42-17.95g COD/L.d), in semi-continuous conditions using one or two bioreactors in a series. The highest production of biohydrogen and acetic acid was achieved at an OLR of 4.42g COD/L.d, whilst the highest lactic acid production occurred at an OLR of 9.33g COD/L.d. Furthermore, the bioreactor with both free and membrane-encased cells produced 60% more lactic acid compared to the conventional, free-cell bioreactor. In addition, an increase of 121% and 100% in the production of acetic and isobutyric acid, respectively, was achieved in the 2nd-stage bioreactor compared to the 1st-stage bioreactor.

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عنوان ژورنال:
  • Bioresource technology

دوره 216  شماره 

صفحات  -

تاریخ انتشار 2016