Effects of the extraction solvents in hydrothermal liquefaction processes: Biocrude oil quality and energy conversion efficiency

Watson, Jamison; Lu, Jianwen; Souza, Raquel de Fátima Rodrigues de; Si, Buchun; Zhang, Yuanhui; Liu, Zhidan

doi:10.1016/j.energy.2018.11.003

Cited by 76 publications

(41 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This outcome is likely due to the limited amount of DCM being unable to fully dissolve all of the fatty acids, suggesting the bio crude yield depends on the amount of solvent and the separation procedure. This observation is greatly consistent with the reports from Watson et al, 2019 andQian et al (2017), that the extraction solvent selection should be carefully considered and normalized for the reporting of hydrothermal liquefaction yields and energy efficiency values.…”

Section: Htl Of Palmitic Acidsupporting

confidence: 91%

Energy valorization of integrating lipid extraction and hydrothermal liquefaction of lipid-extracted sewage sludge

Fan

Fonseca

Gong

et al. 2021

Journal of Cleaner Production

View full text Add to dashboard Cite

Section: Htl Of Palmitic Acidsupporting

confidence: 91%

Energy valorization of integrating lipid extraction and hydrothermal liquefaction of lipid-extracted sewage sludge

Fan

Fonseca

Gong

et al. 2021

Journal of Cleaner Production

View full text Add to dashboard Cite

“…However, the diverse feedstocks and parameter settings applied for HTL also indicate that the yield and composition of the bio-crude vary greatly and the ideal solvent is dependent hereof making comparison of literature values difficult. Several studies have investigated the effects of recovery solvents where dichloromethane often performs well as shown for microalgae and duckweed, while acetone has been the solvent of choice for lignocellulosics. − Hence, direct comparison of different feedstocks for HTL should preferably rely on a standardized workup procedure where a combination of solvents is used.…”

Section: Introductionmentioning

confidence: 99%

How Do Hydrothermal Liquefaction Conditions and Feedstock Type Influence Product Distribution and Elemental Composition?

Madsen

Glasius

2019

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

We investigated the effects of temperature (250−350 °C), reaction time (5−31 min), and solid loading (5−25 wt %) on hydrothermal liquefaction of Spirulina, Miscanthus, and primary sewage sludge using a central composite study design. Response surface methodology was used to identify maxima/minima for yields of gas, bio-crude, aqueous phase (AqP), and solid residue (SR), while the coefficients were used to identify the flux of the four product fractions. Effects on carbon recovery and contents of nitrogen and oxygen of the bio-crude were also assessed. The high bio-crude yields of Miscanthus and sewage sludge mainly resulted from low yields of SR. Higher solid loading of Spirulina and Miscanthus increased bio-crude yields, while carbon recovery often improved with higher temperature and longer reaction time. Common to all feedstocks, the amount of degraded biomass displaced to the AqP decreased with increasing solid loading but simultaneously resulted in more nitrogen in the bio-crude.

show abstract

“…7 The biocrude concentration from HTL of Arthrospira platensis decreased in the following order: acetonitrile > DCM > hexane. 8 Watson et al 9 investigated the influence of three solvents on the biocrude yield and quality from HTL of algae with different biochemical compositions, and found that DCM gave the highest biocrude yield for Chlorella sp., toluene for Nannochloropsis sp., and acetone for Enteromorpha pr. The DCMrecovered biocrude had the largest higher heating value (HHV) for all three algae.…”

Section: ■ Introductionmentioning

confidence: 99%

110th Anniversary: Influence of Solvents on Biocrude from Hydrothermal Liquefaction of Soybean Oil, Soy Protein, Cellulose, Xylose, and Lignin, and Their Quinary Mixture

Liu

Zhang

et al. 2019

Ind. Eng. Chem. Res.

Self Cite

View full text Add to dashboard Cite

We perform hydrothermal liquefaction (HTL) on five materials that model the major biochemical components in a wide array of biomass feedstocks: soybean oil, soy protein, cellulose, xylose, and lignin. The influence of different solvents (dichloromethane, acetone, methyl tert-butyl ether (MTBE)) on the yield, and the elemental content of the biocrude recovered from isothermal and fast HTL of these model compounds is determined. MTBE gives an ∼30% lower biocrude yield and about twice the solids yield, compared with dichloromethane (DCM) and acetone for both fast and isothermal HTL of a mixture of the five materials; however, the MTBE-recovered biocrude has the largest higher heating values (HHVs). The three solvents give similar biocrude yields for HTL of soybean oil and soy protein individually. Acetone recovers the highest biocrude yields from both isothermal and fast HTL of cellulose, xylose, or lignin individually, but the carbon content, hydrogen content, and HHV of the acetone-recovered biocrude are the lowest. The biocrude yields from the different feedstocks do not consistently vary monotonically with the normalized solvent polarity (E T N), which indicates that this property alone is not the controlling factor. Moreover, high yield and large HHV of the biocrude may not be available simultaneously with the pure solvents explored herein, which suggests there may be opportunities for solvent engineering in HTL product recovery. The biocrude yields from fast HTL of a quinary mixture of the model compounds are slightly higher than those from isothermal HTL conditions, which provides another example of the efficacy of fast HTL in valorizing biomass.

show abstract

Effects of the extraction solvents in hydrothermal liquefaction processes: Biocrude oil quality and energy conversion efficiency

Cited by 76 publications

References 42 publications

Energy valorization of integrating lipid extraction and hydrothermal liquefaction of lipid-extracted sewage sludge

Energy valorization of integrating lipid extraction and hydrothermal liquefaction of lipid-extracted sewage sludge

How Do Hydrothermal Liquefaction Conditions and Feedstock Type Influence Product Distribution and Elemental Composition?

110th Anniversary: Influence of Solvents on Biocrude from Hydrothermal Liquefaction of Soybean Oil, Soy Protein, Cellulose, Xylose, and Lignin, and Their Quinary Mixture

Contact Info

Product

Resources

About