Renewable diesel via hydrothermal liquefaction of oleaginous yeast and residual lignin from bioconversion of corn stover

Collett, James R.; Billing, Justin M.; Meyer, Pimphan A.; Schmidt, Andrew J.; Remington, A. Brook; Hawley, Erik R.; Hofstad, Beth A.; Panisko, Ellen; Dai, Ziyu; Hart, Todd R.; Santosa, Daniel M.; Magnuson, Jon; Hallen, Richard T.; Jones, Susanne B.

doi:10.1016/j.apenergy.2018.09.115

Cited by 47 publications

(15 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Upgrading biocrude to fuel blendstocks is achieved via hydrotreating. The HTL and hydrotreating reactor design and operation are comparable to the study by Collett et al 22 . while the capital cost can be found in Snowden‐Swan et al .…”

Section: Methodology and Process Descriptionsupporting

confidence: 73%

Techno‐economic analysis of cellulosic ethanol conversion to fuel and chemicals

Phillips

Jones

Meyer

et al. 2022

Biofuels Bioprod Bioref

Self Cite

View full text Add to dashboard Cite

In this paper, we describe multiple scenarios to assess the techno-economic results of producing hydrocarbon fuels from corn stover-derived ethanol and the impact of co-producing highervalue, ethanol-derived n-butanol and 1,3-butadiene to improve economic feasibility. In our baseline process, the stover-derived lignin is burned for its energy content to raise process steam and electricity. We evaluated an alternative approach based on the same stover-to-ethanol process, but instead of burning residual lignin to produce heat and electricity, it was fed to a hydrothermal liquefaction process and converted into hydrocarbon fuel, while the ethanol from fermentation is used to make only butanol or butadiene. Our results indicate that the hydrothermal liquefaction pathways have significant cost advantages over the pathways that burn the lignin. For comparison purposes, two more scenarios were evaluated based on the assumption that ethanol was purchased at market prices and converted to butanol or butadiene exclusively. This comparison evaluates the economics for making higher-valued chemicals which, in the absence of incentives, would be the most profitable approaches in our study. The results for these evaluations indicated that the ethanol-to-butanol economics were generally favorable and achieved or exceeded the 10% internal rate of return target. The butadiene process had less favorable economic performance in some years when the market price for butadiene was less than the selling price needed to achieve the internal rate of return. Economic incentives for low-carbon chemicals and fuels were not considered in our analysis.

show abstract

Section: Methodology and Process Descriptionsupporting

confidence: 73%

Techno‐economic analysis of cellulosic ethanol conversion to fuel and chemicals

Phillips

Jones

Meyer

et al. 2022

Biofuels Bioprod Bioref

Self Cite

View full text Add to dashboard Cite

show abstract

“…lactose); high inhibitor tolerance; fast growth – [ 28 , 30 , 31 , 118 , 121 ] Lipomyces starkeyi 7.8 (7.5 + 0.3) 1.60 21 (est.) 33.3 2.8 4.8 52.0 3.6 Co-fermentation of substrates – [ 109 , 148 , 198 , 266 , 316 ] Rhodotorula glutinis 5.4 (5.1 + 0.3) 0.86 210 (est.) 15.4 7.2 9.1 63.5 1.8 Bio-control ability; valuable co-product: carotenoids – [ 97 , 124 , 204 , 205 , 290 ] Rhodotorula mucilaginosa 4.1 (3.7 + 0.4) 0.33 12 19.6 0.8 6.1 41.8 27.0 Co-products: xylitol, carotenoids – [ 304 , 312 , 317 ] Trichosporon cutaneum 2.8 (2.6 + 0.2) 0.17 14 30.0 – ...…”

Section: Oleaginous Yeast Speciesmentioning

confidence: 99%

The history, state of the art and future prospects for oleaginous yeast research

Abeln

Chuck

2021

Microb Cell Fact

View full text Add to dashboard Cite

Lipid-based biofuels, such as biodiesel and hydroprocessed esters, are a central part of the global initiative to reduce the environmental impact of the transport sector. The vast majority of production is currently from first-generation feedstocks, such as rapeseed oil, and waste cooking oils. However, the increased exploitation of soybean oil and palm oil has led to vast deforestation, smog emissions and heavily impacted on biodiversity in tropical regions. One promising alternative, potentially capable of meeting future demand sustainably, are oleaginous yeasts. Despite being known about for 143 years, there has been an increasing effort in the last decade to develop a viable industrial system, with currently around 100 research papers published annually. In the academic literature, approximately 160 native yeasts have been reported to produce over 20% of their dry weight in a glyceride-rich oil. The most intensively studied oleaginous yeast have been Cutaneotrichosporon oleaginosus (20% of publications), Rhodotorula toruloides (19%) and Yarrowia lipolytica (19%). Oleaginous yeasts have been primarily grown on single saccharides (60%), hydrolysates (26%) or glycerol (19%), and mainly on the mL scale (66%). Process development and genetic modification (7%) have been applied to alter yeast performance and the lipids, towards the production of biofuels (77%), food/supplements (24%), oleochemicals (19%) or animal feed (3%). Despite over a century of research and the recent application of advanced genetic engineering techniques, the industrial production of an economically viable commodity oil substitute remains elusive. This is mainly due to the estimated high production cost, however, over the course of the twenty-first century where climate change will drastically change global food supply networks and direct governmental action will likely be levied at more destructive crops, yeast lipids offer a flexible platform for localised, sustainable lipid production. Based on data from the large majority of oleaginous yeast academic publications, this review is a guide through the history of oleaginous yeast research, an assessment of the best growth and lipid production achieved to date, the various strategies employed towards industrial production and importantly, a critical discussion about what needs to be built on this huge body of work to make producing a yeast-derived, more sustainable, glyceride oil a commercial reality.

show abstract

“…[32][33][34] There are also a few studies on HTL of microbial biomass for the production of biooils with the focus on yeast biomass. [34][35][36][37][38][39][40] Although HTL does not require catalysts, alkaline catalysts such as Na 2 CO 3 , K 2 CO 3 and KOH are widely used to improve the oil yields because they promote the formation of aromatic oils. 34 In general, the oil yields obtained from HTL of algae and microbial cell biomass are less than 50% because of the low fatty acid contents (generally less than 30% in cell mass) and the inefficient conversion of non-fatty acid components (mainly carbohydrates and proteins) to oils.…”

Section: Htl Of Fungal Biomass To Recover Microbial Oilsmentioning

confidence: 99%

“…33 HTL has been extensively studied for the production and extraction of bio-oils including fatty acids from algae, which was well summarized by a recent publication. 34 There are also a few HTL studies on yeast biomass, [34][35][36][37][38][39] but the studies on HTL of lamentous fungal biomass for oil recovery is very limited. 40 In this study, instead of using glycerol as a "drop-in" carbon source to improve microbial oil production from biomass pretreated by the glycerol-free methods, glycerol-based pretreatment was used to improve cellulose enzymatic digestibility, followed by microbial oil production on mixed substrates containing glucose and residual glycerol and HTL of fungal biomass for oil recovery.…”

Section: Introductionmentioning

confidence: 99%