Scientific articles and patents applications for Bibliometric analysis of diesel production from lignocellulosic biomass
Description
Diesel production from lignocellulosic biomass has the potential to be an economically viable and environmentally sustainable biofuel. Scientific articles retrieved from the Web of Science, Scopus and Compendex databases and patent applications retrieved from the Derwent Innovation database, were used to analyze actors and trends in lignocellulosic diesel production technologies. The documents were grouped into three categories, biomass pre-treatments, bio-oil conversion and refining methods. The analysis of the authors' keywords revealed that the main research topic was the microbial production of lipids, with yeast being the most used microorganisms. The second topic of interest was the pretreatment of biomass with acid, and the third was pyrolysis. Sugarcane bagasse, corn and rice residues are the most used lignocellulosic residues. The countries with the most investments in research and technology were China and the United States. However, diesel production technologies from lignocellulosic biomass are still in the research and development phase. These researches have made significant progress, such as: Integration of first, second and third generation biorefinery processes; better biodiesel quality using catalysts at optimal temperatures, using thermochemical methods for diesel conversion and in the refining of bio-oil; Significant advances in genetic modification of lipid-producing microorganisms and in the production of hydrolytic enzymes, however, further research is needed. The biggest challenges to be overcome due to technical and economic obstacles are: improving cell wall fractionation by combining different biomass pretreatment methods; the formation of inhibitors generated by high temperatures and strong acidic or alkaline reagents, different operating conditions such as pH and temperature in one step, for SSF and SSCF processes for hydrolytic enzymes and oleaginous microorganisms.
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Institutions
- Universidade Federal do Rio de Janeiro