Energy and techno-economic analysis of bio-based carboxylic acid recovery by adsorption

Saboe, Patrick O.; Manker, Lorenz P.; Monroe, Hanna R.; Michener, William E.; Haugen, Stefan J.; Tan, Eric; L., Prestangen, Ryan; Beckham, Gregg T.; Karp, Eric M.

doi:10.1039/d1gc01002f

Cited by 12 publications

(5 citation statements)

References 61 publications

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“…We note that in situ product recovery of VFAs during fermentation can dramatically lower energy requirements for VFA production, further lowering life cycle carbon emissions. 4 , 43 Thus, given baseline LFG capture assumptions, VFA upgrading processes with higher carbon yields also have lower life cycle carbon intensities.…”

Section: Resultsmentioning

confidence: 99%

Screening and evaluation of biomass upgrading strategies for sustainable transportation fuel production with biomass-derived volatile fatty acids

Miller¹,

Tifft²,

Wiatrowski³

et al. 2022

iScience

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Section: Resultsmentioning

confidence: 99%

Screening and evaluation of biomass upgrading strategies for sustainable transportation fuel production with biomass-derived volatile fatty acids

Miller¹,

Tifft²,

Wiatrowski³

et al. 2022

iScience

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“…The adsorbed VFAs were desorbed from the WBA column using methanol in accordance with the previous literature. 24,25 concentrated VFAs (>99.9 wt %) for downstream catalytic upgrading to SAFs. In Scenario 3 (Figure S4c), the strategy to produce concentrated VFAs was the same as that in Scenario 2.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

“…Using WBA resin, VFAs can be directly adsorbed in protonated form. , The VFA-free stream was discharged as wastewater containing around 1.5 wt % NaOH. The adsorbed VFAs were desorbed from the WBA column using methanol in accordance with the previous literature. , Degasification and distillation were used to recycle the elution solvent and obtain concentrated VFAs (>99.9 wt %) for downstream catalytic upgrading to SAFs.…”

Section: Methodsmentioning

confidence: 99%

Sustainable Aviation Fuel from High-Strength Wastewater via Membrane-Assisted Volatile Fatty Acid Production: Experimental Evaluation, Techno-economic, and Life-Cycle Analyses

Wu,

Kim,

Ferdous

et al. 2024

ACS Sustainable Chem. Eng.

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To reduce emissions from combustion of fossil fuels, sustainable aviation fuels (SAFs) have the potential to decarbonize the aviation sector. Redirecting wastes from conventional waste management practices and using them as cost-effective feedstocks for low-carbon fuels can reduce emissions from both waste disposal and fuel combustion. One approach is to upgrade wet wastes to SAF precursors, such as volatile fatty acids (VFAs). In this study, novel membrane-assisted arrested methanogenesis was developed to convert high-strength wastewater to VFAs. Based on experimental results of VFA production, techno-economic and life-cycle analyses were conducted to estimate the potential economic and environmental benefits of SAF production from high-strength wastewater via VFAs. By evaluating three proposed scenarios for VFA production, a minimum production cost of VFA is achieved at $0.60/kg VFA at a wastewater flow rate of 1100 MT/d. For the corresponding VFA-derived SAF, the estimated minimum fuel selling price is $4.64/gasoline gallon equivalent. The life-cycle analysis shows that up to a 71% reduction in greenhouse gas emissions can be achieved relative to its fossil-counterpart along with lower water and fossil-fuel consumption.

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“…The concentration of the acids in the stream is a key factor that determines the appropriate separation techniques [67]. Because the bio-based approaches through a waste/wastewater result in highly dilute and relatively complex aqueous acid solution, a robust separation technique is required to obtain concentrated acids [28,68]. Therefore, we will focus on reported separation methods and their competitive assessment in the next sections.…”

Section: Medium-chain Carboxylic Acid From Wastewatermentioning

confidence: 99%

Recovery Techniques Enabling Circular Chemistry from Wastewater

et al. 2022

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In an era where it becomes less and less accepted to just send waste to landfills and release wastewater into the environment without treatment, numerous initiatives are pursued to facilitate chemical production from waste. This includes microbial conversions of waste in digesters, and with this type of approach, a variety of chemicals can be produced. Typical for digestion systems is that the products are present only in (very) dilute amounts. For such productions to be technically and economically interesting to pursue, it is of key importance that effective product recovery strategies are being developed. In this review, we focus on the recovery of biologically produced carboxylic acids, including volatile fatty acids (VFAs), medium-chain carboxylic acids (MCCAs), long-chain dicarboxylic acids (LCDAs) being directly produced by microorganisms, and indirectly produced unsaturated short-chain acids (USCA), as well as polymers. Key recovery techniques for carboxylic acids in solution include liquid-liquid extraction, adsorption, and membrane separations. The route toward USCA is discussed, including their production by thermal treatment of intracellular polyhydroxyalkanoates (PHA) polymers and the downstream separations. Polymers included in this review are extracellular polymeric substances (EPS). Strategies for fractionation of the different fractions of EPS are discussed, aiming at the valorization of both polysaccharides and proteins. It is concluded that several separation strategies have the potential to further develop the wastewater valorization chains.

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Energy and techno-economic analysis of bio-based carboxylic acid recovery by adsorption

Abstract: Recent works have established bio-based carboxylic acids as adaptable precursors to renewable biofuels and chemicals. However, the separation of carboxylic acids is a major energy and cost driver, accounting for...

Cited by 12 publications

References 61 publications

Screening and evaluation of biomass upgrading strategies for sustainable transportation fuel production with biomass-derived volatile fatty acids

Screening and evaluation of biomass upgrading strategies for sustainable transportation fuel production with biomass-derived volatile fatty acids

Sustainable Aviation Fuel from High-Strength Wastewater via Membrane-Assisted Volatile Fatty Acid Production: Experimental Evaluation, Techno-economic, and Life-Cycle Analyses

Recovery Techniques Enabling Circular Chemistry from Wastewater

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