Editorial Board
text
article
2019
eng
Biofuel Research Journal
Alpha Creation Enterprise
2292-8782
6
v.
3
no.
2019
https://www.biofueljournal.com/article_92198_e34fd80073a8412b0b875abceace5f99.pdf
dx.doi.org/10.18331/BRJ2019.6.3.1
A review on green liquid fuels for the transportation sector: a prospect of microbial solutions to climate change
Hamed
Kazemi Shariat Panahi
Faculty of Medicine and Health Sciences, Macquarie University, NSW, Australia.
author
Mona
Dehhaghi
Faculty of Medicine and Health Sciences, Macquarie University, NSW, Australia.
author
James E.
Kinder
Department of Animal Sciences, Ohio State Agricultural Research and Development Center (OARDC), The Ohio State University, Wooster, USA.
author
Thaddeus Chukwuemeka
Ezeji
Department of Animal Sciences, Ohio State Agricultural Research and Development Center (OARDC), The Ohio State University, Wooster, USA.
author
text
article
2019
eng
Environmental deterioration, global climate change, and consequent increases in pollution-related health problems among populations have been attributed to growing consumption of fossil fuels in particular by the transportation sector. Hence, replacing these energy carriers, also known as major contributors of greenhouse gas emissions, with biofuels have been regarded as a solution to mitigate the above-mentioned challenges. On the other hand, efforts have been put into limiting the utilization of edible feedstocks for biofuels production, i.e., first generation biofuels, by promoting higher generations of these eco-friendly alternatives. In light of that, the present review is aimed at comprehensively assessing the role and importance of microorganisms such as bacteria and yeasts as catalysts for sustainable production of liquid biofuels including bioethanol, biomethanol, biobutanol, bio-ammonia, biokerosene, and bioglycerol. Various aspects of these biofuels, i.e., background, chemical synthesis, microbial production (including exploitation of wild and metabolically-engineered species), and product recovery as well as the derivatives produced from these biofuels which are used as fuel additives are thoroughly covered and critically discussed. Furthermore, the industrial features of these green liquid fuels including the industrial practices reported in the literature and the challenges faced as well as possible approaches to enhance these practices are presented.
Biofuel Research Journal
Alpha Creation Enterprise
2292-8782
6
v.
3
no.
2019
995
1024
https://www.biofueljournal.com/article_92199_d80855f1b1d8a37e94a9376a479f4d55.pdf
dx.doi.org/10.18331/BRJ2019.6.3.2
Candida rugosa lipase nanoparticles as robust catalyst for biodiesel production in organic solvents
Rohit Kumar
Sharma
Molecular Sciences Research Center, University of Puerto Rico, 1390 Ponce de Leon Avenue, Suite 2, San Juan, Puerto Rico 00926-2614, United States.
author
Crystal A.
O'Neill
Molecular Sciences Research Center, University of Puerto Rico, 1390 Ponce de Leon Avenue, Suite 2, San Juan, Puerto Rico 00926-2614, United States.
author
Hector A.R.
Ramos
Molecular Sciences Research Center, University of Puerto Rico, 1390 Ponce de Leon Avenue, Suite 2, San Juan, Puerto Rico 00926-2614, United States.
author
Bibek
Thapa
Molecular Sciences Research Center, University of Puerto Rico, 1390 Ponce de Leon Avenue, Suite 2, San Juan, Puerto Rico 00926-2614, United States.
author
Vanessa C.
Barcelo-Bovea
Molecular Sciences Research Center, University of Puerto Rico, 1390 Ponce de Leon Avenue, Suite 2, San Juan, Puerto Rico 00926-2614, United States.
author
Kavita
Gaur
Molecular Sciences Research Center, University of Puerto Rico, 1390 Ponce de Leon Avenue, Suite 2, San Juan, Puerto Rico 00926-2614, United States.
author
Kai
Griebenow
Molecular Sciences Research Center, University of Puerto Rico, 1390 Ponce de Leon Avenue, Suite 2, San Juan, Puerto Rico 00926-2614, United States.
author
text
article
2019
eng
Inexpensive but resourceful sources of lipids, for example, used cooking oil (UCO) and brown grease (BG), which often contain large amounts of free fatty acids (FFA), are difficult to convert into biodiesel economically and in good yield. Candida rugosa lipase nanoparticles (cNP) were formed first and subsequently cross-linked nanoparticles (CLNP) were obtained by crosslinking of them. Alternatively, cNP were conjugated to magnetic nanoparticles (mNP) to achieve a cNP-mNP conjugate. All three formulations were employed in three different organic solvents (n-heptane, 1,4-dioxane, and t-butanol) to produce biodiesel using BG and UCO in the transesterification reaction with ethanol and methanol. The radii of nanoparticles (NP) were 5.5, 75, 100, 85 nm for mNP, cNP, CLNP, and cNP-mNP, respectively, as measured by scanning/transmission electron microscopy and dynamic light scattering. The catalytic efficiency (Kcat/KM) of cNP, CLNP, and cNP-mNP was increased ca. -25, -68, -176 folds in n-heptane and -35, -131, -262 folds in 1,4-dioxane compared to the lyophilized lipase in the model transesterification reaction of p-nitrophenyl palmitate (PNPP) with ethanol. In biodiesel formation, the best performance with 100% conversion of BG was achieved under optimum conditions with cNP-mNP, ethanol at a 1:3 molar ratio of lipid-to-alcohol, NP at a 1:0.1 weight ratio of lipid-to-enzyme, and water at a 1:0.04 weight ratio of enzyme-to-water at 30 oC for 35 h. The operational stability of the CLNP and cNP-mNP was sustained even after five consequent biodiesel batch conversions while 50% and 82% residual activity (storage stability) were retained after 40 d.
Biofuel Research Journal
Alpha Creation Enterprise
2292-8782
6
v.
3
no.
2019
1025
1038
https://www.biofueljournal.com/article_92200_1c210ea63153989a0b765222110a441e.pdf
dx.doi.org/10.18331/BRJ2019.6.3.3
An integrated approach to explore UASB reactors for energy recycling in pulp and paper industry: a case study in Brazil
Samuel Fontenelle
Ferreira
Faculty of Food Engineering, University of Campinas (UNICAMP), Rua Monteiro Lobato, 80, 13083-862, Campinas, São Paulo, Brazil.
author
Luz Selene
Buller
Faculty of Food Engineering, University of Campinas (UNICAMP), Rua Monteiro Lobato, 80, 13083-862, Campinas, São Paulo, Brazil.
author
Mauro Donizeti
Berni
Interdisciplinary Center of Energy Planning (NIPE), University of Campinas (UNICAMP), Rua Cora Coralina, 13083-970, Campinas, São Paulo, Brazil.
author
Sergio Valdir
Bajay
Interdisciplinary Center of Energy Planning (NIPE), University of Campinas (UNICAMP), Rua Cora Coralina, 13083-970, Campinas, São Paulo, Brazil.
author
Tânia
Forster-Carneiro
Faculty of Food Engineering, University of Campinas (UNICAMP), Rua Monteiro Lobato, 80, 13083-862, Campinas, São Paulo, Brazil.
author
text
article
2019
eng
Brazil is currently focused on its energy matrix transition in favor of increasing of the share of renewable energy carriers for both enhanced energy security and mitigation of greenhouse gas emissions. In this context, the country`s pulp and paper industry whose different wastes teams are not generally exploited, could play a critical role. Accordingly, the main objective of this work is to develop a conceptual ‘systemic’ biorefinery framework integrating the treatment of pulp and paper mill wastewater using upflow anaerobic sludge blanket (UASB) reactor with energy recovery through biogas production and its conversion into heat and power in stationary engines and boilers, respectively. Based on the results obtained through the present case study, it was revealed that the adoption of UASB reactors by the paper mill industry could properly addresses the environmental concerns faced while could contribute to the national agenda favoring an increasing share of renewable energies in the country`s energy matrix. The financial analysis showed that the investment required for the implementation of UASB reactors within a biorefinery platform would be minor vs. the investment in the whole mill and would be returned in 6.4 yr with a high return on investment even when operated at half of operational capacity. Moreover, through the developed UASB reactor-based biorefinery, the Brazilian pulp and paper industry as a whole could avoid 1.06 ×105 CO2eq tons, effectively contributing to the decarbonization of the country`s economy.
Biofuel Research Journal
Alpha Creation Enterprise
2292-8782
6
v.
3
no.
2019
1039
1045
https://www.biofueljournal.com/article_92201_b8f13325750c8ce0a9c29432f708749e.pdf
dx.doi.org/10.18331/BRJ2019.6.3.4
Fermentative biohydrogen production from a novel combination of vermicompost as inoculum and mild heat-pretreated fruit and vegetable waste
María J.
Pascualone
Centro de Investigación y Transferencia en Ingeniería Química Ambiental (CIQA), Facultad Regional Córdoba, Universidad Tecnológica Nacional, Maestro López esq. Cruz Roja Argentina, 5016 Córdoba, Argentina.
author
Marcos B.
Gómez Costa
Centro de Investigación en Nanociencia y Nanotecnología (NANOTEC), Facultad Regional Córdoba, Universidad Tecnológica Nacional, Maestro López esq. Cruz Roja Argentina, 5016 Córdoba, Argentina.
author
Pablo R.
Dalmasso
Centro de Investigación y Transferencia en Ingeniería Química Ambiental (CIQA), Facultad Regional Córdoba, Universidad Tecnológica Nacional, Maestro López esq. Cruz Roja Argentina, 5016 Córdoba, Argentina.
author
text
article
2019
eng
This study reports for the first time on biohydrogen production by dark fermentation using a novel combination of mild heat-pretreated fruit and vegetable waste (FVW) as raw material and vermicompost as an economical source of hydrogen-producing bacteria. A suspension rich in reducing sugars obtained from FVW was used at different initial concentrations (5 to 25 g reducing sugars/L) during the bioprocess conducted in batch reactors at mesophilic temperature of 35 °C. The use of a mild heat-pretreated substrate and the consequent elimination of the natural microbiota present in the FVW led to higher hydrogen production than the control. Clostridium species, hydrogen-producing bacteria via butyric acid fermentation pathway, were the dominant microorganisms in the bioprocess. Hydrogen production, volumetric hydrogen production rate, and pretreated substrate degradation efficiency (63.0 mL/g VS, 372.6 mL/L/d, and 50% BOD5, respectively) obtained in the experiments performed with the highest substrate concentration demonstrated that the developed bioprocess was promising simultaneously leading to high hydrogen contents in biogas and high substrate removal efficiencies.
Biofuel Research Journal
Alpha Creation Enterprise
2292-8782
6
v.
3
no.
2019
1046
1053
https://www.biofueljournal.com/article_92202_9343805dc82157d511f7167ea43e5121.pdf
dx.doi.org/10.18331/BRJ2019.6.3.5