Investigation of aqueous phase recycling for improving bio-crude oil yield in hydrothermal liquefaction of algae

Yulin Hu; Shanghuan Feng; Zhongshun Yuan; Chunbao (Charles) Xu; Amarjeet Bassi

doi:10.1016/j.biortech.2017.05.033

Investigation of aqueous phase recycling for improving bio-crude oil yield in hydrothermal liquefaction of algae

Yulin Hu
, Shanghuan Feng
, Zhongshun Yuan
, Chunbao (Charles) Xu^*
, Amarjeet Bassi

^*Corresponding author for this work

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

124 Citations (Scopus)

Abstract

In this study, the aqueous phase obtained from catalytic/non-catalytic hydrothermal liquefaction (HTL) of Chlorella vulgaris was recycled as the reaction medium with an aim to reduce water consumption and increase bio-crude oil yield. Although both Na₂CO₃ and HCOOH catalysts have been proven to be effective for promoting biomass conversion, the bio-crude oil yield obtained from HTL with Na₂CO₃ (11.5 wt%) was lower than that obtained from the non-catalytic HTL in pure water at 275 °C for 50 min. While, the HCOOH led to almost the same bio-crude yield from HTL (29.4 wt%). Interestingly, bio-crude oil yield obtained from non-catalytic or catalytic HTL in recycled aqueous phase was much higher than that obtained from HTL in pure water. Recycling aqueous phase obtained from catalytic HTL experiments resulted in a sharp increase in the bio-crude oil yield by 32.6 wt% (Na₂CO₃-HTL) and 16.1 wt% (HCOOH-HTL), respectively. © 2017 Elsevier Ltd

Original language	English
Pages (from-to)	151-159
Journal	Bioresource Technology
Volume	239
DOIs	https://doi.org/10.1016/j.biortech.2017.05.033
Publication status	Published - 2017
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

The authors would like to acknowledge the funding from BioFuelNet Canada, a Network of Centres of Excellence and from NSERC through the Discovery Grants awarded to Dr. Xu and Dr. Bassi.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 6 Clean Water and Sanitation
SDG 7 Affordable and Clean Energy

Research Keywords

Algae
Aqueous phase recycling
Bio-crude oil
Catalyst
Hydrothermal liquefaction

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10.1016/j.biortech.2017.05.033

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title = "Investigation of aqueous phase recycling for improving bio-crude oil yield in hydrothermal liquefaction of algae",

abstract = "In this study, the aqueous phase obtained from catalytic/non-catalytic hydrothermal liquefaction (HTL) of Chlorella vulgaris was recycled as the reaction medium with an aim to reduce water consumption and increase bio-crude oil yield. Although both Na2CO3 and HCOOH catalysts have been proven to be effective for promoting biomass conversion, the bio-crude oil yield obtained from HTL with Na2CO3 (11.5 wt\%) was lower than that obtained from the non-catalytic HTL in pure water at 275 °C for 50 min. While, the HCOOH led to almost the same bio-crude yield from HTL (29.4 wt\%). Interestingly, bio-crude oil yield obtained from non-catalytic or catalytic HTL in recycled aqueous phase was much higher than that obtained from HTL in pure water. Recycling aqueous phase obtained from catalytic HTL experiments resulted in a sharp increase in the bio-crude oil yield by 32.6 wt\% (Na2CO3-HTL) and 16.1 wt\% (HCOOH-HTL), respectively. {\textcopyright} 2017 Elsevier Ltd",

keywords = "Algae, Aqueous phase recycling, Bio-crude oil, Catalyst, Hydrothermal liquefaction",

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journal = "Bioresource Technology",

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TY - JOUR

T1 - Investigation of aqueous phase recycling for improving bio-crude oil yield in hydrothermal liquefaction of algae

AU - Hu, Yulin

AU - Feng, Shanghuan

AU - Yuan, Zhongshun

AU - Xu, Chunbao (Charles)

AU - Bassi, Amarjeet

N1 - 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].

PY - 2017

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N2 - In this study, the aqueous phase obtained from catalytic/non-catalytic hydrothermal liquefaction (HTL) of Chlorella vulgaris was recycled as the reaction medium with an aim to reduce water consumption and increase bio-crude oil yield. Although both Na2CO3 and HCOOH catalysts have been proven to be effective for promoting biomass conversion, the bio-crude oil yield obtained from HTL with Na2CO3 (11.5 wt%) was lower than that obtained from the non-catalytic HTL in pure water at 275 °C for 50 min. While, the HCOOH led to almost the same bio-crude yield from HTL (29.4 wt%). Interestingly, bio-crude oil yield obtained from non-catalytic or catalytic HTL in recycled aqueous phase was much higher than that obtained from HTL in pure water. Recycling aqueous phase obtained from catalytic HTL experiments resulted in a sharp increase in the bio-crude oil yield by 32.6 wt% (Na2CO3-HTL) and 16.1 wt% (HCOOH-HTL), respectively. © 2017 Elsevier Ltd

AB - In this study, the aqueous phase obtained from catalytic/non-catalytic hydrothermal liquefaction (HTL) of Chlorella vulgaris was recycled as the reaction medium with an aim to reduce water consumption and increase bio-crude oil yield. Although both Na2CO3 and HCOOH catalysts have been proven to be effective for promoting biomass conversion, the bio-crude oil yield obtained from HTL with Na2CO3 (11.5 wt%) was lower than that obtained from the non-catalytic HTL in pure water at 275 °C for 50 min. While, the HCOOH led to almost the same bio-crude yield from HTL (29.4 wt%). Interestingly, bio-crude oil yield obtained from non-catalytic or catalytic HTL in recycled aqueous phase was much higher than that obtained from HTL in pure water. Recycling aqueous phase obtained from catalytic HTL experiments resulted in a sharp increase in the bio-crude oil yield by 32.6 wt% (Na2CO3-HTL) and 16.1 wt% (HCOOH-HTL), respectively. © 2017 Elsevier Ltd

KW - Algae

KW - Aqueous phase recycling

KW - Bio-crude oil

KW - Catalyst

KW - Hydrothermal liquefaction

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UR - https://www.scopus.com/pages/publications/85019210838#tab=impact

U2 - 10.1016/j.biortech.2017.05.033

DO - 10.1016/j.biortech.2017.05.033

M3 - RGC 21 - Publication in refereed journal

C2 - 28521224

SN - 0960-8524

VL - 239

SP - 151

EP - 159

JO - Bioresource Technology

JF - Bioresource Technology

ER -

Investigation of aqueous phase recycling for improving bio-crude oil yield in hydrothermal liquefaction of algae

Abstract

Bibliographical note

Funding

UN SDGs

Research Keywords

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