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On the Cover

Many research teams are heavily invested in enhancing biomethane production from the abundant lignocellulosic wastes, striving to introduce more efficient pretreatment methods. To serve this purpose, in the September 2021 Issue of Biofuel Research Journal, a team at Brigham Young University (USA) tested the ability of the hyperthermophilic anaerobic bacterium, Caldicellulosiruptor bescii, to hydrolyze and solubilize lignocellulosic materials and thereby increase the production of biomethane by anaerobic digestion (DOI: 10.18331/BRJ2021.8.3). Several different wastes were tested to identify any potential toxicities, and none were found. Tests were run at lab-, bench-, and pilot plant-scale with C.bescii pre-digestion and mesophilic anaerobic digestion at 37-41°C. Biogas production by anaerobic digestion of C. bescii pre-digested dairy manure and waste activated sludge was approximately doubled compared with traditional mesophilic anaerobic digestion. The principal variables that must be quantified and controlled in engineering commercial, continuous-flow systems for waste disposal and biogas production incorporating C. bescii pre-digestion are the retention times in the anaerobic secretome bioreactor and the anaerobic digester. Incorporating C. bescii pre-digestion in an optimized commercial system is predicted to provide 75-85% volatile solids conversion to biogas with 75% methane when digesting dairy manure and sewage sludge. Achieving these results at a commercial scale requires optimizing retention times. Cover art by BiofuelResJ. ©2021.

Biofuel Research Journal (BRJ) publishes high-quality original articles, review articles, case studies, book reviews, short communications, and hypotheses on the fundamentals, applications, processing, and management of biofuel and bioproduct research and technologies:


  • Biofuels & Bioproducts
  • Biodiesel
  • Bioalcohols (bioethanol, biobuthanol, etc.)
  • Biogas (biomethane & biohydrogen)
  • Biomass valorization
  • Algal biofuels & bioproducts
  • Bioprocess (bioreactions, bioreactors, membrane-bioreactors, fermentation, etc.)
  • Biorefineries for biofuels & bioproducts
  • Applied microbiology
  • Combustion
  • Bioresource technologies associated with conversion or production of biofuels & bioproducts

Moreover, novel and integrated biofuel & bioproduct processing and hybrid systems as well as energy audit for biofuel & bioproduct production plants are of interest. The journal also seeks to publish articles with a focus on the application of artificial photosynthesis for biofuels production, carbon footprint analysis, strategies for limiting green house gas (GHG) emissions, life cycle assessment (LCA) and exergy analysis of biofuel & bioproduct production/application pathways, compliance with the international standards (such as PAS 2050:2011 and ISO 14040:2006), technoeconomic analysis of biofuel & bioproduct production/application, impacts of biofuel & bioproduct production/consumption on climate change, futuristic pathways for biofuel & bioproduct production, and promotion of biofuel  & bioproduct applications in the developing world for indigenous development. In addition to the above, BRJ also considers articles with a focus on biofuels & bioproducts in Circular Economy as well as biofuels & bioproducts finance.

Biofuel Research Journal is indexed in Scopus and Web of Science.

BRJ does not charge any submission or publication fees. 

Editor-in-Chief: Meisam Tabatabaei

International Advisory Board: Yusuf Chisti, Ahmad Fauzi Ismail, Seeram Ramakrishna, Solange I. Mussatto

> View Full Editorial Board

Current Issue: Volume 8, Issue 3, Summer 2021, Pages 1417-1464 

3. Enhancing waste degradation and biogas production by pre-digestion with a hyperthermophilic anaerobic bacterium

Pages 1433-1443


Jaron C. Hansen; Zachary T. Aanderud; Lindsey E. Reid; Carson Bateman; Conly L. Hansen; L. Scott Rogers; Lee D. Hansen

Enhancing waste degradation and biogas production by pre-digestion with a hyperthermophilic anaerobic bacterium