State-of-the-art studies of advanced techniques of biorefinery for biofuel production are also included.
Research involving experimental studies, recent developments, and novel and emerging technologies in this field are covered.
In recent years, gasification also garners high interest due to its rapid processing step and high yield of syngas which could be directly used for combustion.
One of the main constitutes of syngas is hydrogen which usually provides high calorific value.
The particular topics of interest in the original call for papers included, but were not limited to: on the subject of “Biofuel and Bioenergy Technology” contains the successful invited submissions [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27].
A total of twenty-seven technical papers which cover diversified biofuel and bioenergy technology related researches have shown critical results and contributed significant findings in biomass processing [1,2], bio-oil and biodiesel [3,4,5,6,7,8,9,10,11], syngas [12,13,14], biogas/methane [15,16,17,18,19], bioethanol and alcohol-based fuels [20,21,22], solid fuel [23,24,25] and also microbial fuel cell [13,26,27] developments.Nonetheless, under most conditions, pyrolytic oil/bio-oil requires further processing or upgrading for use as biodiesel.To maintain the stability of bio-oil, blending with emulsifier resulted in high solubility (58.83–70.96 wt %) .As the initial step in most synthesis routes, biomass processing can enhance the substrate’s quality for other synthesis processes.Thus, commonly, these are treated as pretreatment to enhance the characteristics of the biomass.Transesterification of Australian native stone biodiesel showed a high yield of 95.8% with the response surface methodology optimization and its quality fulfilled the ASTM D6751 and EN14214 requirements .  investigate both direct acid and base-transesterification on biomass which gave 111% yield of FAME and 102% yield of FAME, respectively, which were regarded as of good biodiesel quality.  used soursop seed to produce bio-oil which was eventually upgraded to biodiesel using a two-step acid catalyzed transesterification.The biodiesel produced met both EN14214 and D6751 standards.  performed rapeseed transesterification with KOH catalyst as well as with the aid of ultrasound whereby the kinetic behavior obeyed a pseudo-first order trend.Bio-oils can be synthesized from sewage sludge by using pyrolysis techniques .Taguchi optimization suggested the best pyrolysis was performed at 450 °C, 60 min and 10 °C/min, which also showed consistency with other research work.We thank the editorial staff and reviewers for their efforts and help during the process.Table 1 provides some of the key information, including the research type, field of study, final product as well as the key findings.