TY - JOUR
T1 - Relative effectiveness of substrate-inoculum ratio and initial pH on hydrogen production from palm oil mill effluent
T2 - Kinetics and statistical optimization
AU - Mishra, Puranjan
AU - Ameen, Fuad
AU - Zaid, Rubaiyi M.
AU - Singh, Lakhveer
AU - Wahid, Zularisam Ab
AU - Islam, M. Amirul
AU - Gupta, Arun
AU - Al Nadhari, Saleh
N1 - The continuation of this research is being supported by the Deanship of Scientific research ( RGP-1438-029 ), King Saud university and Department of Research & Innovation ( RDU-150801 ) University Malaysia Pahang, Malaysia. The authors are also very thankful to Faculty of Engineernig Technology, UMP, Malaysia for providing the Laboratory access.
Publisher Copyright:
© 2019 Elsevier Ltd
PY - 2019/8/10
Y1 - 2019/8/10
N2 - The present study has enabled to establish an appropriate kinetic and operational condition for hydrogen production using ultrasonicated palm oil mill effluent (POME). The kinetic analysis was performed corresponds to cumulative hydrogen (H2) production by varying substrate-inoculum ratio (COD/VS) from 0.2 to 0.6. The maximum H2 production potential (P) of 448 mL H2 with lag-time (ρ) of 8.2 h and H2 production rate (Rm) of 14.62 mL H2 h−1 was achieved using the substrate-inoculum ratio of 0.6. However, the Rm of 17.979 mL H2 h−1 with the ρ of 16.84 h, which is almost double than the substrate-inoculum ratio of 0.6 was observed at a substrate-inoculum ratio of 0.4. Furthermore, response surface methodology (RSM), including experimental design, regression analysis, was successfully applied to achieved optimum substrate-inoculum ratio and initial pH for biological H2 production from ultrasonicated POME. The maximum yield of 0.416 L H2/g-CODremoval was observed at the optimum conditions of substrate-inoculum ratio of 0.5 and an initial pH of 5.0. The linear, quadratic and interactive effect of substrate-inoculum ratio and initial pH on H2 yield were significant.
AB - The present study has enabled to establish an appropriate kinetic and operational condition for hydrogen production using ultrasonicated palm oil mill effluent (POME). The kinetic analysis was performed corresponds to cumulative hydrogen (H2) production by varying substrate-inoculum ratio (COD/VS) from 0.2 to 0.6. The maximum H2 production potential (P) of 448 mL H2 with lag-time (ρ) of 8.2 h and H2 production rate (Rm) of 14.62 mL H2 h−1 was achieved using the substrate-inoculum ratio of 0.6. However, the Rm of 17.979 mL H2 h−1 with the ρ of 16.84 h, which is almost double than the substrate-inoculum ratio of 0.6 was observed at a substrate-inoculum ratio of 0.4. Furthermore, response surface methodology (RSM), including experimental design, regression analysis, was successfully applied to achieved optimum substrate-inoculum ratio and initial pH for biological H2 production from ultrasonicated POME. The maximum yield of 0.416 L H2/g-CODremoval was observed at the optimum conditions of substrate-inoculum ratio of 0.5 and an initial pH of 5.0. The linear, quadratic and interactive effect of substrate-inoculum ratio and initial pH on H2 yield were significant.
KW - Hydrogen
KW - Palm oil mill effluent
KW - Production kinetics
KW - Response surface methodology
KW - Substrate-inoculum ratio
KW - Subtrate concentrations
UR - http://www.scopus.com/inward/record.url?scp=85065074725&partnerID=8YFLogxK
U2 - 10.1016/j.jclepro.2019.04.317
DO - 10.1016/j.jclepro.2019.04.317
M3 - Journal article
SN - 0959-6526
VL - 228
SP - 276
EP - 283
JO - Journal of Cleaner Production
JF - Journal of Cleaner Production
ER -
