Hydrothermal liquefaction of biomass for the generation of value-added products

Nallasivam, Jeganathan; Prashanth, P. Francis; Vinu, R.

doi:10.1016/b978-0-323-88511-9.00018-5

Cited by 14 publications

(2 citation statements)

References 182 publications

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“…The typical oxygen content in pyrolysis bio-oil from different feedstocks falls in the range of 30-50 wt.%, while that in HTL bio-crude is 10-30 wt.%. The elemental compositions of HTL bio-crudes from different feedstocks are well documented by Nallasivam et al [95], and that of pyrolysis bio-oils are available in Gautam and Vinu [86]. The moisture content is also lower in HTL bio-crude than pyrolysis bio-oil.…”

Section: Development Of Biolubricants From Biomass Via Thermochemical...mentioning

confidence: 74%

Current Status and Future Prospects of Biolubricants: Properties and Applications

Sarma

Vinu

2022

Lubricants

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Biolubricants generated from biomass and other wastes can reduce the carbon footprint of manufacturing processes and power generation. In this paper, the properties and uses of biolubricants have been compared thoroughly with conventional mineral-based lubricants. The biolubricants, which are currently based on vegetable oils, are discussed in terms of their physicochemical and thermophysical properties, stability, and biodegradability. This mini-review points out the main features of the existing biolubricants, and puts forward the case of using sustainable biolubricants, which can be generated from agro-residues via thermochemical processes. The properties, applications, and limitations of non-edible oils and waste-derived oils, such as bio-oil from pyrolysis and bio-crude from hydrothermal liquefaction, are discussed in the context of biolubricants. While the existing studies on biolubricants have mostly focused on the use of vegetable oils and some non-edible oils, there is a need to shift to waste-derived oils, which is highlighted in this paper. This perspective compares the key properties of conventional oils with different oils derived from renewable resources and wastes. In the authors’ opinion, the use of waste-derived oils is a potential future option to address the problem of the waste management and supply of biolubricant for various applications including machining, milling applications, biological applications, engine oils, and compressor oils. In order to achieve this, significant research needs to be conducted to evaluate salient properties such as viscosity, flash point, biodegradability, thermo-oxidative and storage stability of the oils, technoeconomics, and sustainability, which are highlighted in this review.

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Section: Development Of Biolubricants From Biomass Via Thermochemical...mentioning

confidence: 74%

Current Status and Future Prospects of Biolubricants: Properties and Applications

Sarma

Vinu

2022

Lubricants

View full text Add to dashboard Cite

show abstract

“…In general, bio-oil can be obtained from biomass by pyrolysis and/or hydrothermal liquefaction (HTL) methods. The bio-oil from pyrolysis is highly unstable as a result of its high oxygen content and as a result of vigorous reaction condition which can destroys the natural structure of phenolic compounds [8]. Our earlier investigation on using pyrolysis for valorization of PJ biomass has yielded only 25% bio-oil after removing the aqueous phase [9].…”

Section: Introductionmentioning

confidence: 99%