Production of crude bio-oil via direct liquefaction of spent K-Cups

Linxi Yang; Nubla Mahmood; Kenneth Corscadden; Chunbao (Charles) Xu; Quan (Sophia) He

doi:10.1016/j.biombioe.2016.07.006

Production of crude bio-oil via direct liquefaction of spent K-Cups

Linxi Yang
, Nubla Mahmood
, Kenneth Corscadden
, Chunbao (Charles) Xu
, Quan (Sophia) He^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

26 Citations (Scopus)

Abstract

Spent K-Cups were liquefied into crude bio-oil in a water-ethanol co-solvent mixture and reaction conditions were optimized using response surface methodology (RSM) with a central composite design (CCD). The effects of three independent variables on the yield of crude bio-oil were examined, including the reaction temperature (varied from 255 °C to 350 °C), reaction time (varied from 0 min to 25 min) and solvent/feedstock mass ratio (varied from 2:1 to 12:1). The optimum reaction conditions identified were 276 °C, 3 min, and solvent/feedstock mass ratio of 11:1, giving a mass fraction yield of crude bio-oil of 60.0%. The overall carbon recovery at the optimum conditions was 93% in mass fraction. The effects of catalyst addition (NaOH and H₂SO₄) on the yield of crude bio-oil were also investigated under the optimized reaction conditions. The results revealed that the presence of NaOH promoted the decomposition of feedstock and significantly enhanced the bio-oil production and liquefaction efficiency, whereas the addition of H₂SO₄ resulted in a negative impact on the liquefaction process, decreasing the yield of crude bio-oil. © 2016 Elsevier Ltd

Original language	English
Pages (from-to)	354-363
Journal	Biomass and Bioenergy
Volume	95
DOIs	https://doi.org/10.1016/j.biombioe.2016.07.006
Publication status	Published - 1 Dec 2016
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Funding

We acknowledge the financial support provided by Growing Forward 2 program (RA2013-0034), Nova Scotia Department of Agriculture, the NSERC Discovery (RGPIN 04211) and BioFuelNet (BFN 67_Xu) grants.

Research Keywords

Bio-oil
Liquefaction
Response surface methodology (RSM)
Spent K-Cup
Water-ethanol mixture

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abstract = "Spent K-Cups were liquefied into crude bio-oil in a water-ethanol co-solvent mixture and reaction conditions were optimized using response surface methodology (RSM) with a central composite design (CCD). The effects of three independent variables on the yield of crude bio-oil were examined, including the reaction temperature (varied from 255 °C to 350 °C), reaction time (varied from 0 min to 25 min) and solvent/feedstock mass ratio (varied from 2:1 to 12:1). The optimum reaction conditions identified were 276 °C, 3 min, and solvent/feedstock mass ratio of 11:1, giving a mass fraction yield of crude bio-oil of 60.0\%. The overall carbon recovery at the optimum conditions was 93\% in mass fraction. The effects of catalyst addition (NaOH and H2SO4) on the yield of crude bio-oil were also investigated under the optimized reaction conditions. The results revealed that the presence of NaOH promoted the decomposition of feedstock and significantly enhanced the bio-oil production and liquefaction efficiency, whereas the addition of H2SO4 resulted in a negative impact on the liquefaction process, decreasing the yield of crude bio-oil. {\textcopyright} 2016 Elsevier Ltd",

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AU - Mahmood, Nubla

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AU - Xu, Chunbao (Charles)

AU - He, Quan (Sophia)

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AB - Spent K-Cups were liquefied into crude bio-oil in a water-ethanol co-solvent mixture and reaction conditions were optimized using response surface methodology (RSM) with a central composite design (CCD). The effects of three independent variables on the yield of crude bio-oil were examined, including the reaction temperature (varied from 255 °C to 350 °C), reaction time (varied from 0 min to 25 min) and solvent/feedstock mass ratio (varied from 2:1 to 12:1). The optimum reaction conditions identified were 276 °C, 3 min, and solvent/feedstock mass ratio of 11:1, giving a mass fraction yield of crude bio-oil of 60.0%. The overall carbon recovery at the optimum conditions was 93% in mass fraction. The effects of catalyst addition (NaOH and H2SO4) on the yield of crude bio-oil were also investigated under the optimized reaction conditions. The results revealed that the presence of NaOH promoted the decomposition of feedstock and significantly enhanced the bio-oil production and liquefaction efficiency, whereas the addition of H2SO4 resulted in a negative impact on the liquefaction process, decreasing the yield of crude bio-oil. © 2016 Elsevier Ltd

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KW - Liquefaction

KW - Response surface methodology (RSM)

KW - Spent K-Cup

KW - Water-ethanol mixture

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JO - Biomass and Bioenergy

JF - Biomass and Bioenergy

ER -

Production of crude bio-oil via direct liquefaction of spent K-Cups

Abstract

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Research Keywords

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