Single- and two-step hydrothermal liquefaction of microalgae in a semi-continuous reactor: Effect of the operating parameters

2015 ◽  
Vol 191 ◽  
pp. 426-432 ◽  
Author(s):  
Keerati Prapaiwatcharapan ◽  
Sasithorn Sunphorka ◽  
Prapan Kuchonthara ◽  
Kunn Kangvansaichol ◽  
Napida Hinchiranan
Keyword(s):  
Hydrothermal Liquefaction ◽  
Continuous Reactor ◽  
Operating Parameters

Effect of operating parameters on hydrothermal liquefaction of corn straw and its life cycle assessment

2019 ◽  
Vol 27 (6) ◽  
pp. 6362-6374 ◽  
Author(s):  
Shiqiu Zhang ◽  
Shengnan Zhou ◽  
Xue Yang ◽  
Wen Xi ◽  
Kui Zheng ◽  
...  
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Hydrothermal Liquefaction ◽  
Operating Parameters ◽  
Corn Straw

Biocrude oil production and nutrient recovery from algae by two-step hydrothermal liquefaction using a semi-continuous reactor

2014 ◽  
Vol 32 (1) ◽  
pp. 79-87 ◽  
Author(s):  
Sasithorn Sunphorka ◽  
Keerati Prapaiwatcharapan ◽  
Napida Hinchiranan ◽  
Kunn Kangvansaichol ◽  
Prapan Kuchonthara
Keyword(s):  
Oil Production ◽  
Hydrothermal Liquefaction ◽  
Continuous Reactor ◽  
Nutrient Recovery ◽  
Biocrude Oil

Chemical reactions in the hydrothermal liquefaction of biomass and in the catalytic hydrogenation upgrading of biocrude

2021 ◽  
Author(s):  
Botian Hao ◽  
Donghai Xu ◽  
Guanyu Jiang ◽  
Tanveer Ahmed Sabri ◽  
Zefeng Jing ◽  
...  
Keyword(s):  
Chemical Reactions ◽  
Residence Time ◽  
Reaction Temperature ◽  
Catalytic Hydrogenation ◽  
Hydrothermal Liquefaction ◽  
Operating Parameters ◽  
Catalyst Type

This article systematically describes chemical reactions in biomass HTL and the catalytic hydrogenation upgrading of the obtained biocrude and analyze the effects of operating parameters on these two processes, such as reaction temperature, residence time and catalyst type.

Construction and Commissioning of a Continuous Reactor for Hydrothermal Liquefaction

2015 ◽  
Vol 54 (22) ◽  
pp. 5935-5947 ◽  
Author(s):  
Anders Juul Mørup ◽  
Jacob Becker ◽  
Per Sigaard Christensen ◽  
Kasper Houlberg ◽  
Elpiniki Lappa ◽  
...  
Keyword(s):  
Hydrothermal Liquefaction ◽  
Continuous Reactor

scholarly journals Lignocellulosic and algal biomass for bio-crude production using hydrothermal liquefaction: Conversion techniques, mechanism and process conditions: A review

2021 ◽  
Vol 27 (1) ◽  
pp. 200555-0
Author(s):  
Chitra Devi Venkatachalam ◽  
Sathish Raam Ravichandran ◽  
Mothil Sengottian
Keyword(s):  
Algal Biomass ◽  
Subcritical Water ◽  
Energy Resource ◽  
Value Added ◽  
Hydrothermal Liquefaction ◽  
Thermochemical Conversion ◽  
Process Conditions ◽  
Operating Parameters ◽  
Bio Oil ◽  
First And Second Generation

Thermochemical conversion is an effective process in production of biocrude. It mainly includes techniques such as torrefaction, liquefaction, gasification and pyrolysis in which Hydrothermal Liquefaction (HTL) has the potential to produce significant energy resource. Algae, one of the third-generation feedstocks is placed in the top order for production of bio-oil compared to the first and second-generation feedstock, as the algae can get multiplied in shorter time with the uptake of greenhouse gases. In HTL, the subcritical water helps the biomass to undergo thermal depolymerisation and produce various chemicals such as nitrogenates, alkanes, phenolics, esters, etc. The produced “biocrude” or “bio-oil” may be further upgraded into value-added chemicals and fuels. In addition, the bio-gas and bio-char are also synthesized as by-products. This review provides an overview of different routes available for thermochemical conversion of biomass. It also provides an insight on the operating parameters such as temperature, pressure, dosage of catalyst and solvent for lignocellulosic and algal biomass under HTL environment. In extent, the article covers the conversion mechanism for these two feedstocks and also the effects of the operating parameters on the yield of biocrude are studied in detail.

scholarly journals Evaluation of the Heat Produced by the Hydrothermal Liquefaction of Wet Food Processing Residues and Model Compounds

2022 ◽  
Vol 6 (1) ◽  
pp. 2
Author(s):  
Morgane Briand ◽  
Geert Haarlemmer ◽  
Anne Roubaud ◽  
Pascal Fongarland
Keyword(s):  
Glutamic Acid ◽  
Batch Reactor ◽  
Underlying Mechanism ◽  
Hydrothermal Liquefaction ◽  
Continuous Reactor ◽  
Heat Of Reaction ◽  
Model Compounds ◽  
Spent Grains ◽  
Food Residues ◽  
Heat Released

Hydrothermal liquefaction has proven itself as a promising pathway to the valorisation of low-value wet food residues. The chemistry is complex and many questions remain about the underlying mechanism of the transformation. Little is known about the heat of reaction, or even the thermal effects, of the hydrothermal liquefaction of real biomass and its constituents. This paper explores different methods to evaluate the heat released during the liquefaction of blackcurrant pomace and brewers’ spent grains. Some model compounds have also been evaluated, such as lignin, cellulose and glutamic acid. Exothermic behaviour was observed for blackcurrant pomace and brewers’ spent grains. Results obtained in a continuous reactor are similar to those obtained in a batch reactor. The heat release has been estimated between 1 MJ/kg and 3 MJ/kg for blackcurrant pomace and brewers’ spent grains, respectively. Liquefaction of cellulose and glucose also exhibit exothermic behaviour, while the transformation of lignin and glutamic acid present a slightly endothermic behaviour.

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