An overview of pyrolysis of de-oiled cakes for the production of biochar, bio-oil, and pyro-gas: Current status, challenges, and future perspective

De-oiled cakes/seed cakes are being increasingly explored for the production of bio-oil and biochar. In this study, analysis of reported investigations covering i) characterization of various de-oiled cakes in terms ultimate, proximate, bio-chemical, and higher heating value (HHV) analyses, ii) reac...

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Bibliographic Details
Published in:Bioresource technology reports 2022-09, Vol.19, p.101205, Article 101205
Main Authors: Rajpoot, Lakshmi, Tagade, Ankita, Deshpande, Gunavant, Verma, Komal, Geed, Sachin R., Patle, Dipesh S., Sawarkar, Ashish N.
Format: Article
Language:English
Subjects:
Biochar
Biomass
Characterization
De-oiled cake
Kinetics and thermodynamics
Pyrolysis
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Summary:De-oiled cakes/seed cakes are being increasingly explored for the production of bio-oil and biochar. In this study, analysis of reported investigations covering i) characterization of various de-oiled cakes in terms ultimate, proximate, bio-chemical, and higher heating value (HHV) analyses, ii) reactors employed along with operating parameters for pyrolysis of various de-oiled cakes, iii) kinetics and thermodynamic analysis of pyrolysis of various de-oiled cakes, iv) characterization of biochar obtained from pyrolysis of various de-oiled cakes and its relationship with prospective applications, is deliberated. Average activation energy for pyrolysis of various de-oiled cakes was found to be in the range of 98 to 162 kJ/mol. Analyses revealed that biochar from de-oiled cakes have remarkable scope in a variety of emerging applications in view of plenty of surface functional groups and high specific surface area. It was also revealed that plasma reactors and microwave-based reactors hold tremendous potential and need be explored further. [Display omitted] •Comprehensive characterization comparison of investigated de-oiled cakes for pyrolysis•Analysis of pyrolysis kinetics and thermodynamic analysis of reported de-oiled cakes•In-depth analysis of the reactors employed, optimum conditions, and products yield•Summary of characterization and applications of biochar from de-oiled cakes pyrolysis•Research gaps and future directions are outlined for pyrolysis of de-oiled cakes.
ISSN:2589-014X
2589-014X
DOI:10.1016/j.biteb.2022.101205