Impact of nanoparticle inclusion on bioethanol production process kinetic and inhibitor profile.
BIOTECHNOLOGY REPORTS (AMSTERDAM, NETHERLANDS) 2021;
29:e00585. [PMID:
33511040 PMCID:
PMC7817428 DOI:
10.1016/j.btre.2021.e00585]
[Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Revised: 12/08/2020] [Accepted: 12/31/2020] [Indexed: 01/06/2023]
Abstract
NiO nanoparticle (NP) inclusion enhanced bioethanol production up to 59.96 %.
Band energy gap impact NP catalytic performance in bioethanol production.
NiO nanoparticle biocatalyst improved bioethanol productivity by 145 %.
Modified Gompertz model was used to describe ethanol production with NP inclusion.
Metallic NiO nanoparticles significantly reduced acetic acid concentration by 110 %.
This study examines the effects of nanoparticle inclusion in instantaneous saccharification and fermentation (NIISF) of waste potato peels. The effect of nanoparticle inclusion on the fermentation process was investigated at different stages which were: pre-treatment, liquefaction, saccharification and fermentation. Inclusion of NiO NPs at the pre-treatment stage gave a 1.60-fold increase and 2.10-fold reduction in bioethanol and acetic acid concentration respectively. Kinetic data on the bioethanol production fit the modified Gompertz model (R 2 > 0.98). The lowest production lag time (t L) of 1.56 h, and highest potential bioethanol concentration (P m) of 32 g/L were achieved with NiO NPs inclusion at different process stages; the liquefaction stage and the pre-treatment phase, respectively. Elevated bioethanol yield, coupled with substantial reduction in process inhibitors in the NIISF processes, demonstrated the significance of point of nanobiocatalysts inclusion for the scale-up development of bioethanol production from potato peels.
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