Elemental migration and characterization of products during hydrothermal liquefaction of cornstalk

Zhu, Zongmin; Si, Buchun; Lu, Jianwen; Watson, Jamison; Zhang, Yuanhui; Liu, Zhidan

doi:10.1016/j.biortech.2017.06.085

Cited by 74 publications

(33 citation statements)

References 44 publications

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“…The highest biocrude oil yield occurred at 330 °C with a maximum biocrude oil yield (30.35%, daf), which is similar with the results of a previous study (30.75%, daf) [14]. The trend of temperature effect on biocrude oil yield was consistent with a previous study [21]. More oily compounds were formed as the temperature increased.…”

Section: Effect Of Temperature On Production Distributionsupporting

confidence: 90%

“…The aqueous products content generally increased from 34.66 to 37.63% at 270–350 °C. It is reported that cellulose and hemicellulose could be easily hydrolysed to water‐soluble acid and sugar in sub‐ and supercritical water [21]. The increase of aqueous yields was possibly attributed to the increasing decomposition rate of cellulose and hemicellulose under 350 °C [25].…”

Section: Resultsmentioning

confidence: 99%

“…Comparatively, the solid residue yield continuously decreased to 18.44% as the temperature increased to 310 °C. The increased gases yield most likely accounts for the enhanced formation of CO 2 [21]. Also, the cracking of oil compounds to gaseous products at higher temperatures also increases gases yield.…”

Section: Resultsmentioning

confidence: 99%

“…Crude cellulose contents were measured through the Van Soest method [12]. The HHV calculation was the same as a previous study [21].…”

Section: Methodsmentioning

confidence: 99%

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Hydrothermal conversion of anaerobic wastewater fed microalgae: effects of reaction temperature on products distribution and biocrude properties

Liu

Wang

et al. 2019

IET Renewable Power Generation

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Microalgae using non-arable land were considered as promising biomass for biocrude production through hydrothermal liquefaction (HTL) and can also be used for environmentally-friendly wastewater treatment. In this study, we illuminated the effect of reaction temperature on the products distribution and biocrude properties from HTL of the Chlorella sp. grown in wastewater from anaerobic digestion (AD) of chicken manure via HTL. The highest biocrude yield (30.35%, daf) and energy recovery rate (49.6%) were both achieved at 330 °C, while the highest HHV (37.17 MJ/kg) of biocrude oil was achieved at 290 °C. The biocrude oil yield increased from 25.46 to 30.35% as the temperature increased from 270 to 330 °C. The gases yield showed a similar trend under 310 °C. On the contrary, the solid products yield decreased as the temperature approached 350 °C. The lowest nitrogen content (4.6%) and highest H/C (1.50) of biocrude oil were obtained at 290 and 270 °C, respectively. Results imply that deoxygenation was enhanced with temperature due to the enhanced decarboxylation at higher temperatures. Specially, the nitrogen content decreased by 39.4-47.4% in the temperature range of 270-350 °C. The integrated pathways for energy production and nutrient recycling from animal manure coupling AD/HTL, and algae technologies were further proposed.

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Section: Effect Of Temperature On Production Distributionsupporting

confidence: 90%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…Crude cellulose contents were measured through the Van Soest method [12]. The HHV calculation was the same as a previous study [21].…”

Section: Methodsmentioning

confidence: 99%

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Hydrothermal conversion of anaerobic wastewater fed microalgae: effects of reaction temperature on products distribution and biocrude properties

Liu

Wang

et al. 2019

IET Renewable Power Generation

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“…Starting as early as the 1970s but increasing significantly over the past decade, research groups at universities and national laboratories around the world have been investigating HTL of a variety of biomass feed types, such as woody biomass (Schaleger et al, 1982;Haarlemmer et al, 2016;Tran et al, 2017), plant biomass (Zhang et al, 2013;Zhu et al, 2015;Yan et al, 2016), food processing waste (Minowa et al, 1995;Yang et al, 2016;Posmanik et al, 2017), agricultural waste (Chan et al, 2014;Singh et al, 2015;Zhu et al, 2017), animal manure (Xiu et al, 2010;Theegala and Midgett, 2012), pulp/paper sludge (Xu and Lancaster, 2008), and algae Neveux et al, 2014;Faeth et al, 2016). Previous work in CHG over the same period has looked at conversion of agricultural waste (Pei et al, 2009) and industrial wastewater (Seif et al, 2016) to hydrogen.…”

Section: Introductionmentioning

confidence: 99%

Bench‐Scale Evaluation of Hydrothermal Processing Technology for Conversion of Wastewater Solids to Fuels

Marrone

Elliott²,

Billing³

et al. 2018

Water Environment Research

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Hydrothermal Liquefaction (HTL) and Catalytic Hydrothermal Gasification (CHG) proof-of-concept bench-scale tests were performed to assess the potential of hydrothermal treatment for handling municipal wastewater sludge. HTL tests were conducted at 300 to 350 °C and 20 MPa on three different feeds: primary sludge, secondary sludge, and digested solids. Corresponding CHG tests were conducted at 350 °C and 20 MPa on the HTL aqueous phase output using a ruthenium-based catalyst. Biocrude yields ranged from 25 to 37%. Biocrude composition and quality were comparable to biocrudes generated from algae feeds. Subsequent hydrotreating of biocrude resulted in a product with comparable physical and chemical properties to crude oil. CHG product gas methane yields on a carbon basis ranged from 47 to 64%. Siloxane concentrations in the CHG product gas were below engine limits. The HTL-CHG process resulted in a chemical oxygen demand (COD) reduction of > 99.9% and a reduction in residual solids for disposal of 94 to 99%.

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Hydrothermal Liquefaction of Waste Agricultural Biomass for Biofuel and Biochar

Rajput¹,

Kumar²,

Vlaskin³

et al. 2022

Agriculture Waste Management and Bioresource

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Elemental migration and characterization of products during hydrothermal liquefaction of cornstalk

Cited by 74 publications

References 44 publications

Hydrothermal conversion of anaerobic wastewater fed microalgae: effects of reaction temperature on products distribution and biocrude properties

Hydrothermal conversion of anaerobic wastewater fed microalgae: effects of reaction temperature on products distribution and biocrude properties

Bench‐Scale Evaluation of Hydrothermal Processing Technology for Conversion of Wastewater Solids to Fuels

Hydrothermal Liquefaction of Waste Agricultural Biomass for Biofuel and Biochar

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