Kinetic data analysis and mathematical modeling of intra (wild type vs. engineered) and inter species (Saccharomyces cerevisiae vs. Zymomonas mobilis) dependency for bioethanol production from glucose, xylose or their combination

Nosrati-Ghods, Nosaibeh; Harrison, Susan T.L.; Isafiade, Adeniyi J.; Tai, Siew Leng

doi:10.1016/j.bej.2021.108229

Cited by 3 publications

(1 citation statement)

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“…where 𝑟𝑟 is rate of ethanol formation [g/L/h], 𝑞𝑞 𝑝𝑝 is specific ethanol production rate [h -1 ], 𝑋𝑋 is cells concentration [g/L], α is growth associated factor for ethanol production, µ 𝑔𝑔 is specific growth rate of cells [h -1 ], β is maintenance parameter or growth independent factor for ethanol production 41,[46][47][48][49] .…”

Section: Detailed Production Processmentioning

confidence: 99%

Potential of Corn Cob Sustainable Valorization to Fuel-Grade Bioethanol: A Simulation Study Using Superpro Designer®

Steven,

Neng Tresna Umi Culsum,

Intan Clarissa Sophiana

et al. 2023

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The massive dependence on fossil fuels to produce ethanol has damaged the environment. This compels the quest for other alternatives using lignocellulosic materials (2 nd generation bioethanol) so as not to compete and disturb food security purposes. The promising biomass to be valorized is corn cob because of its high productivity and short harvest period. Coupled with the fact that simulation studies of its fermentation with Zymomonas mobilis to produce bioethanol are still lacking, a corn cob sustainable valorization to fuel-grade bioethanol is hence disclosed. Superpro Designer 8.5 ® was employed for simulation. Corn cob undergoes pretreatment, 2-h hydrolysis of cellulose and hemicellulose, delignification, 48-h glucose and xylose anaerobic fermentation, cells removal, vaporation, and distillation. Bioethanol is produced at 10.85%-wt from direct fermentation. Subsequently, the 1 st distillation (13 actual stages number) upgrades its concentration to 92.34%-wt. The second one (23 actual stages number) rectifies up to 99.96% and the product finally meets the criteria of fuel grade. Afterward, the calculated yield is 0.35 g/g corn cob or 44.30% based on glucose and xylose. Several by-products are also produced and to comply with the concept of sustainability, water is returned to the river, lignin and extractives are utilized for phenolic producers, wet CO2 gas is proposed for microalgae inorganic carbon sources, and stillage is returned to nature as liquid fertilizer.

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