Hydrothermal liquefaction of organic resources in biotechnology: how does it work and what can be achieved?

Sandquist, Judit; Tschentscher, Roman; Serrano, Gonzalo del Alamo

doi:10.1007/s00253-018-9507-2

Cited by 20 publications

(17 citation statements)

References 101 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This makes supercritical water a highly polarized solvent able to dissolve non-polar hydrocarbons. The lower dielectric constant of water is explained by the significant increase in electron mobility as the temperature rises near the critical temperature [65]. In addition to the lower solvent polarity, the dielectric constant influences the solubility of salts, which decreases with increasing temperatures and pressures [66].…”

Section: The Properties Of Water Under Sub-and Supercritical Conditionsmentioning

confidence: 99%

Sub- and Supercritical Water Liquefaction of Kraft Lignin and Black Liquor Derived Lignin

et al. 2020

View full text Add to dashboard Cite

To mitigate global warming, humankind has been forced to develop new efficient energy solutions based on renewable energy sources. Hydrothermal liquefaction (HTL) is a promising technology that can efficiently produce bio-oil from several biomass sources. The HTL process uses sub- or supercritical water for producing bio-oil, water-soluble organics, gaseous products and char. Black liquor mainly contains cooking chemicals (mainly alkali salts) lignin and the hemicellulose parts of the wood chips used for cellulose digestion. This review explores the effects of different process parameters, solvents and catalysts for the HTL of black liquor or black liquor-derived lignin. Using short residence times under near- or supercritical water conditions may improve both the quality and the quantity of the bio-oil yield. The quality and yield of bio-oil can be further improved by using solvents (e.g., phenol) and catalysts (e.g., alkali salts, zirconia). However, the solubility of alkali salts present in black liquor can lead to clogging problem in the HTL reactor and process tubes when approaching supercritical water conditions.

show abstract

Section: The Properties Of Water Under Sub-and Supercritical Conditionsmentioning

confidence: 99%

Sub- and Supercritical Water Liquefaction of Kraft Lignin and Black Liquor Derived Lignin

et al. 2020

View full text Add to dashboard Cite

show abstract

“…A number of reviews have been published in literature recently. Recommended reading on technology specific analysis of HTL could be found in [ 14,18,33 ] and in [ 17,19,22,34 ] for SCWG. Other recent reviews have examined in detail both SCW biomass chemistry [ 15,16 ] and the fluid's thermo-physical properties [ 23,26 ].…”

Section: Techno-economic Bottlenecks Facing Sub/supercritical Water Tmentioning

confidence: 99%

“…SCWR as a technology is considered in pilot/demo scale development [ 33 ], or in other words, at TRL(s) between five and seven 11 [ 29 ]. Operational data for continuous pilot-plant operations are available for HTL units, but to a lesser extent for SCWG, with near-commercial (or demonstration) data for SCWR systems absent, for obvious confidentiality reasons [ 29 ].…”

Section: #1: Unfavorable Economics Compared To Reference Technologiesmentioning

confidence: 99%

“…Research frontier on the HTL platform is tasked with process design optimization for higher carbon recovery in the primary liquid products. Whereas, depending on the feedstock nature and solids loading, reactor operating condition, and catalytic effects, anywhere between 30-70% of carbon feed ends up as part of the by-product non-crude phases [ 14,15,18,29,33,36 ]. Holistically, and when considering the most examined renewable fuel production pathway, a HTL reactor system (upstream), followed by biocrude hydrotreatment (downstream), the carbon recovery reaches a reported maxima of 66% for lignocellulose and 84% for algal feeds [ 29 ].…”

Section: #1: Unfavorable Economics Compared To Reference Technologiesmentioning

confidence: 99%

“…In addition to economic considerations, the significant phase partitioning of organics under SCWR systems raises environmental concerns regarding disposal measures for residual streams. In the liquefaction platform; the aqueous yield is characterized by the presence of high total organic carbon (TOC) content [ 33 ]. While, the solids hydrochars, is defined by the existing aromatic structure and significant mineral content [ 36 ].…”

Section: #2: the Need For A More Holistic Valorization Platform To Admentioning

confidence: 99%

See 2 more Smart Citations

Supercritical water gasification of Kraft black liquor: Process design, analysis, pulp mill integration and economic evaluation

Magdeldin

Järvinen

2020

Applied Energy

View full text Add to dashboard Cite

The author was responsible for the design and execution of the study. The author performed the literature review, data collection, model development and validation, and conducted the subsequent analysis of the technical and economic findings. Mika Järvinen contributed with guidance and knowledge on the black liquor and recovery boiler modelling approach, and assisted with the analysis for the integration study with pulp mill operation. This introductory chapter briefly explains the potential role of biomass as a source for renewable carbon and hydrogen carriers in matching near-term energy demand, while also mitigating global climate change. The chapter then lists some of the technical and commercial challenges facing biomass conversion practices, as well as drivers for further development. Figure 4. Key liquid and gaseous bio-carrier production pathways (developing and commercial).

show abstract

Valorization of Agriculture Residues into Value‐Added Products: A Comprehensive Review of Recent Studies

Hoang,

Van Anh,

Yusuf

et al. 2024

The Chemical Record

View full text Add to dashboard Cite

Global agricultural by‐products usually go to waste, especially in developing countries where agricultural products are usually exported as raw products. Such waste streams, once converted to “value‐added” products could be an additional source of revenue while simultaneously having positive impacts on the socio‐economic well‐being of local people. We highlight the utilization of thermochemical techniques to activate and convert agricultural waste streams such as rice and straw husk, coconut fiber, coffee wastes, and okara power wastes commonly found in the world into porous activated carbons and biofuels. Such activated carbons are suitable for various applications in environmental remediation, climate mitigation, energy storage, and conversions such as batteries and supercapacitors, in improving crop productivity and producing useful biofuels.

show abstract

Hydrothermal liquefaction of organic resources in biotechnology: how does it work and what can be achieved?

Cited by 20 publications

References 101 publications

Sub- and Supercritical Water Liquefaction of Kraft Lignin and Black Liquor Derived Lignin

Sub- and Supercritical Water Liquefaction of Kraft Lignin and Black Liquor Derived Lignin

Supercritical water gasification of Kraft black liquor: Process design, analysis, pulp mill integration and economic evaluation

Valorization of Agriculture Residues into Value‐Added Products: A Comprehensive Review of Recent Studies

Contact Info

Product

Resources

About