Design of Low-Cost Ethanol Production Medium from Syngas: An Optimization of Trace Metals for Clostridium ljungdahlii
Makaleler > Tam Makale · 2021
Yazarlar: Simge SERTKAYA KÖYBAŞI, Nuri AZBAR, Haris Nalakath Abubackar, Tuğba Keskin Gündoğdu
ENERGIES, SCI Expanded İndekslerine Giren Dergi, Uluslararası, 2021, cilt 14, ss 6981-6981
DOI: 10.3390/en14216981
Özet
<p class="MDPI17abstract"><span lang="EN-US" style="color:windowtext">Syngas fermentation via the Wood-Ljungdahl (WL) pathway is a promising approach for converting gaseous pollutants (CO and CO<sub>2</sub>) into high-value commodities. Because the WL involves several enzymes with trace metal components, it requires an adequate supply of micronutrients in the fermentation medium for targeted bioprocessing such as bioethanol production. Plackett-Burman statistical analysis was performed to examine the most efficient trace elements (Ni, Mg, Ca, Mn, Co, Cu, B, W, Zn, Fe, and Mo) and their concentrations for <i>Clostridium ljungdahlii </i>on ethanol production. Overall, 1.5- to-2.5 fold improvement in ethanol production could be achieved with designed trace element concentrations. The effects of tungsten and copper on ethanol and biomass production were determined to be the most significant, respectively. The model developed was statistically significant and has the potential to significantly decrease the cost of trace element solutions by 18-22%. This research demonstrates the critical importance of optimizing the medium for syngas fermentation in terms of product distribution and economic feasibility.</span><span style="font-family:"Arial",sans-serif;color:windowtext;mso-ansi-language:TR"><o:p></o:p></span></p>