TY - JOUR
T1 - Application of an electric field for pretreatment of a seeding source for dark fermentative hydrogen production
AU - Jeong, Da Young
AU - Cho, Si Kyung
AU - Shin, Hang Sik
AU - Jung, Kyung Won
PY - 2013/7
Y1 - 2013/7
N2 - In present study, an electric field was newly adopted as a pretreatment method for inoculum preparation in dark fermentative hydrogen production. Various voltages (5-20V for 10min) were applied, and the feasibility and efficiency of this method were compared with those of heat pretreatment (90°C for 20min). Both the highest H2 yield, 1.43mol H2/molhexoseadded, and the highest production rate, 101.4mLH2/L/h, were observed at 10V. While RNA concentration of above 100mg/L was maintained up to 10V, it was decreased at an applied voltage of 20V, where the worst performance was observed. Microbial analysis results confirmed that only H2 producing bacteria were detected with electric pretreatment, while non-H2 producing bacteria coexist with heat and electric (5V) pretreatment. The results suggested that application of an electric field has reasonable potential as an alternative method for preparing inoculums for hydrogen production.
AB - In present study, an electric field was newly adopted as a pretreatment method for inoculum preparation in dark fermentative hydrogen production. Various voltages (5-20V for 10min) were applied, and the feasibility and efficiency of this method were compared with those of heat pretreatment (90°C for 20min). Both the highest H2 yield, 1.43mol H2/molhexoseadded, and the highest production rate, 101.4mLH2/L/h, were observed at 10V. While RNA concentration of above 100mg/L was maintained up to 10V, it was decreased at an applied voltage of 20V, where the worst performance was observed. Microbial analysis results confirmed that only H2 producing bacteria were detected with electric pretreatment, while non-H2 producing bacteria coexist with heat and electric (5V) pretreatment. The results suggested that application of an electric field has reasonable potential as an alternative method for preparing inoculums for hydrogen production.
KW - Electric pretreatment
KW - RNA concentration
UR - http://www.scopus.com/inward/record.url?scp=84886258348&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2013.04.039
DO - 10.1016/j.biortech.2013.04.039
M3 - Article
C2 - 23664066
AN - SCOPUS:84886258348
SN - 0960-8524
VL - 139
SP - 393
EP - 396
JO - Bioresource Technology
JF - Bioresource Technology
ER -