TY - JOUR
T1 - Activated carbon-Fe catalyst modification on stainless steel cathode affects hydrogen production in microbial electrolysis cell
AU - Hidayati, Istia Prianti
AU - Ekadewi, Putty
AU - Arbianti, Rita
AU - Utami, Tania Surya
N1 - Funding Information:
This research is supported by Universitas Indonesia, PUTI Proceeding Year 2020, No: NKB-1095/UN2.RST/HKP.05.00/2020. The Authors would like to thank Integrated Laboratory and Reserach Center Universitas Indonesia-Characterization Laboratory for providing assistance on BET analysis
Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2021/5/17
Y1 - 2021/5/17
N2 - Microbial Electrolysis Cell (MEC) can be used to produce hydrogen gas from organic matter contained in wastewater. However, at the cathode of MECs, hydrogen production may be limited by methanogenesis wherein CO2 and hydrogen protons react to form methane and water. In this study, activated carbon (AC)-Fe was used as a catalyst coated onto SS mesh 304 cathode. AC-Fe/SS was chosen for its high surface area, good activity, and stability. The combination of AC-Fe on SS was expected to increase hydrogen production in MECs. Adsorption and phase inversion were chosen to coat AC-Fe mixture on SS. The research was carried out in a 100 mL MEC reactor with an operating time of 258 h. The produced hydrogen was analyzed for its purity by GC-TCD. Voltage measurements were carried out using a digital multimeter. Additionally, bacterial growth was analyzed by spectrophotometer. The highest fraction of hydrogen gas production was 60% without catalyst (uncoated) over only 0.08% with AC-Fe/SS. The highest value of optical density for bacterial growth was 0.611 for AC-Fe/SS, higher than 0.427 without catalyst. The highest current density was 99.11 mA/m2 for AC-Fe/SS and 59.52 mA/m2 without catalyst. The results suggested AC-Fe/SS coating allows for increased bacterial growth and voltage generation at the cost of an adverse effect on hydrogen gas production.
AB - Microbial Electrolysis Cell (MEC) can be used to produce hydrogen gas from organic matter contained in wastewater. However, at the cathode of MECs, hydrogen production may be limited by methanogenesis wherein CO2 and hydrogen protons react to form methane and water. In this study, activated carbon (AC)-Fe was used as a catalyst coated onto SS mesh 304 cathode. AC-Fe/SS was chosen for its high surface area, good activity, and stability. The combination of AC-Fe on SS was expected to increase hydrogen production in MECs. Adsorption and phase inversion were chosen to coat AC-Fe mixture on SS. The research was carried out in a 100 mL MEC reactor with an operating time of 258 h. The produced hydrogen was analyzed for its purity by GC-TCD. Voltage measurements were carried out using a digital multimeter. Additionally, bacterial growth was analyzed by spectrophotometer. The highest fraction of hydrogen gas production was 60% without catalyst (uncoated) over only 0.08% with AC-Fe/SS. The highest value of optical density for bacterial growth was 0.611 for AC-Fe/SS, higher than 0.427 without catalyst. The highest current density was 99.11 mA/m2 for AC-Fe/SS and 59.52 mA/m2 without catalyst. The results suggested AC-Fe/SS coating allows for increased bacterial growth and voltage generation at the cost of an adverse effect on hydrogen gas production.
UR - http://www.scopus.com/inward/record.url?scp=85107188469&partnerID=8YFLogxK
U2 - 10.1088/1755-1315/749/1/012071
DO - 10.1088/1755-1315/749/1/012071
M3 - Conference article
AN - SCOPUS:85107188469
SN - 1755-1307
VL - 749
JO - IOP Conference Series: Earth and Environmental Science
JF - IOP Conference Series: Earth and Environmental Science
IS - 1
M1 - 012071
T2 - International Conference of Biomass and Bioenergy 2020, ICBB 2020
Y2 - 10 August 2020 through 11 August 2020
ER -
