TY - JOUR
T1 - Biological acetate production from carbon dioxide by Acetobacterium woodii and Clostridium ljungdahlii
T2 - The effect of cell immobilization
AU - Cheng, Hai Hsuan
AU - Syu, Jyun Cyuan
AU - Tien, Shih Yuan
AU - Whang, Liang Ming
N1 - Funding Information:
The authors would like to acknowledge the financial support from the National Science Council of Taiwan under Grant MOST 103-2221-E-006-009-MY3, the Ministry of Education of Taiwan under grant for the Top University Project to the National Cheng Kung University.
Funding Information:
The authors would like to acknowledge the financial support from the National Science Council of Taiwan under Grant MOST 103-2221-E-006-009-MY3 , the Ministry of Education of Taiwan under grant for the Top University Project to the National Cheng Kung University .
Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2018/8
Y1 - 2018/8
N2 - This study investigated the acetate production from gas mixture of hydrogen (H2) and carbon dioxide (CO2) in the ratio of 7:3 using two acetogens: Acetobacterium woodii and Clostridium ljungdahlii. Batch result shows A. woodii performed two-phase degradation with the presence of glucose that lactate was produced from glucose and was reutilized for the production of butyrate and few acetate, while only acetate was detected when providing gas mixture. C. ljungdahlii produced butyrate and ethanol along with acetate when glucose was introduced, while only ethanol and acetate were found by feeding gas mixture. The acetate-to-ethanol (A/E) ratio can be enhanced by cell immobilization, while GAC immobilization produced only acetate and the production rate reached 0.072 mmol/d under fed-batch operation. Acetate production rate increased from 18 to 28 mmol/L/d with GAC immobilization when gas flowrate increased from 100 to 300 mL/min in anaerobic fluidized membrane bioreactor (AFMBR), and a highest A/E ratio of 30 implies the possible application of acetate recovery from H2 and CO2.
AB - This study investigated the acetate production from gas mixture of hydrogen (H2) and carbon dioxide (CO2) in the ratio of 7:3 using two acetogens: Acetobacterium woodii and Clostridium ljungdahlii. Batch result shows A. woodii performed two-phase degradation with the presence of glucose that lactate was produced from glucose and was reutilized for the production of butyrate and few acetate, while only acetate was detected when providing gas mixture. C. ljungdahlii produced butyrate and ethanol along with acetate when glucose was introduced, while only ethanol and acetate were found by feeding gas mixture. The acetate-to-ethanol (A/E) ratio can be enhanced by cell immobilization, while GAC immobilization produced only acetate and the production rate reached 0.072 mmol/d under fed-batch operation. Acetate production rate increased from 18 to 28 mmol/L/d with GAC immobilization when gas flowrate increased from 100 to 300 mL/min in anaerobic fluidized membrane bioreactor (AFMBR), and a highest A/E ratio of 30 implies the possible application of acetate recovery from H2 and CO2.
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U2 - 10.1016/j.biortech.2018.04.069
DO - 10.1016/j.biortech.2018.04.069
M3 - Article
C2 - 29709841
AN - SCOPUS:85046460424
SN - 0960-8524
VL - 262
SP - 229
EP - 234
JO - Bioresource technology
JF - Bioresource technology
ER -