mixed alcohols
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2021 ◽  
Author(s):  
Matthew Wiatrowski ◽  
Bruno C Klein ◽  
Ryan W Davis ◽  
Carlos Quiroz-Arita ◽  
Eric C D Tan ◽  
...  

Abstract BackgroundMicroalgae possess numerous advantages for use as a feedstock in producing renewable fuels and products, with techno-economic analysis (TEA) frequently used to highlight the economic potential and technical challenges of utilizing this biomass in a biorefinery context. However, many historical TEA studies have focused on the conversion of biomass with elevated levels of carbohydrates and lipids and lower levels of protein, incurring substantial burdens on the ability to achieve high cultivation productivity rates relative to nutrient-replete, high-protein biomass. Given a strong dependence of algal biomass production costs on cultivation productivity, further TEA assessment is needed to understand the economic potential for utilizing potentially lower-cost but lower-quality, high-protein microalgae for biorefinery conversion. ResultsIn this work, we conduct rigorous TEA modeling to assess the economic viability of two conceptual technology pathways for processing proteinaceous algae into a suite of fuels and products. One approach, termed mild oxidative treatment and upgrading (MOTU), makes use of a series of thermo-catalytic operations to upgrade solubilized proteins and carbohydrates to hydrocarbon fuels, while another alternative focuses on the biological conversion of those substrates to oxygenated fuels in the form of mixed alcohols (MA). Both pathways rely on the production of polyurethanes from unsaturated fatty acids and valorization of unconverted solids for use as a material for synthesizing bioplastics. The assessment found similar, albeit slightly higher fuel yields and lower costs for the MA pathway, translating to a residual solids selling price of $899/ton for MA versus $1,033/ton for MOTU as would be required to support a $2.50/gallon gasoline equivalent (GGE) fuel selling price. A variation of the MA pathway including subsequent upgrading of the mixed alcohols to hydrocarbon fuels (MAU) reflected a required solids selling price of $975/ton.ConclusionThe slight advantages observed for the MA pathway are partially attributed to a boundary that stops at oxygenated fuels versus fungible drop-in hydrocarbon fuels through a more complex MOTU configuration, with more comparable results obtained for the MAU scenario. In either case, it was shown that an integrated algal biorefinery can be economical through optimal strategies to utilize and valorize all fractions of the biomass.


Author(s):  
Leila Negahdar ◽  
Xiaoying Xi ◽  
Feng Zeng ◽  
J. G. M. Winkelman ◽  
Hero Jan Heeres ◽  
...  

2020 ◽  
Vol 197 ◽  
pp. 105477
Author(s):  
Jie Guo ◽  
Ying Yang ◽  
Xinyi Gao ◽  
Jianguo Yu
Keyword(s):  

2019 ◽  
Vol 246 ◽  
pp. 232-241 ◽  
Author(s):  
Feng Zeng ◽  
Xiaoying Xi ◽  
Huatang Cao ◽  
Yutao Pei ◽  
Hero Jan Heeres ◽  
...  

2019 ◽  
Vol 188 ◽  
pp. 30-42 ◽  
Author(s):  
Qianqian Li ◽  
Hu Liu ◽  
Yemiao Zhang ◽  
Zhiyu Yan ◽  
Fuquan Deng ◽  
...  

Fuel ◽  
2019 ◽  
Vol 240 ◽  
pp. 339-348 ◽  
Author(s):  
Hongqing Feng ◽  
Hongdong Zhang ◽  
Jianan Wei ◽  
Bowen Li ◽  
Di Wang

2018 ◽  
Vol 12 (6) ◽  
pp. 1082-1094
Author(s):  
Abigail S. Engelberth ◽  
M. Clayton Wheeler ◽  
G. Peter van Walsum

2018 ◽  
Vol 40 (15) ◽  
pp. 1937-1947 ◽  
Author(s):  
Qiong Huang ◽  
Qiu Wang ◽  
Tao Tao ◽  
Yunxia Zhao ◽  
Peng Wang ◽  
...  

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