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1. Designing Synthetic Microbial Consortia for Biofuel Production

Author:
Jiang, Yujia; Dong, Weiliang; Xin, Fengxue; Jiang, Min
Source:
Trends in biotechnology 2020
ISSN:
0167-7799
Subject:
biofuels,   etc   ; fuel production; lignocellulose; microorganisms;     Show all 4 Subjects
Abstract:
... Synthetic microbial consortia could efficiently produce biofuels from lignocellulose through labor division between different species. However, the incompatible growth conditions between lignocellulose degraders and biofuel producers might limit the overall conversion efficiency. We discuss recent examples of biofuel production using microbial consortia and suggest steps toward realistic implement ...
DOI:
10.1016/j.tibtech.2020.02.002

2. Microalgal Torrefaction for Solid Biofuel Production

Author:
Ho, Shih-Hsin; Zhang, Congyu; Tao, Fei; Zhang, Chaofan; Chen, Wei-Hsin
Source:
Trends in biotechnology 2020
ISSN:
0167-7799
Subject:
biofuels,   etc   ; biosynthesis; feedstocks; fuel production; microalgae; torrefaction;     Show all 6 Subjects
Abstract:
... Microalgae are recognized as promising feedstocks for biofuel production and have been intensively studied. However, a systematic investigation of the relationship between cellular components and fuel properties in microalgae is currently absent. This review introduces recent advances in microalgal torrefaction and critically evaluates the properties of torrefied products from the viewpoint of mol ...
DOI:
10.1016/j.tibtech.2020.02.009

3. Hydrodeoxygenation of crude bio-oil in situ in the bio-oil aqueous phase with addition of zero-valent aluminum

Author:
Yang, Tianhua; Shi, Linping; Li, Rundong; Li, Bingshuo; Kai, Xingping
Source:
Fuel processing technology 2019 v.184 pp. 65-72
ISSN:
0378-3820
Subject:
biofuels,   etc   ; aluminum; hydrogen;     Show all 3 Subjects
Abstract:
... This study investigated the influence of the ratios of zero-valent aluminum (ZV-Al) to bio-oil aqueous phase (1/25, 1.5/25, and 2/25 g/mL) on hydrodeoxygenation (HDO) of crude bio-oil (CBO) with in situ hydrogen generated via the reaction of ZV-Al and the aqueous phase. The reaction of ZV-Al and the aqueous phase produced more hydrogen than the reaction of ZV-Al and water due to the aqueous phase ...
DOI:
10.1016/j.fuproc.2018.10.025

4. Potential utilization of bioproducts from microalgae for the quality enhancement of natural products

Author:
Tang, Doris Ying Ying; Khoo, Kuan Shiong; Chew, Kit Wayne; Tao, Yang; Ho, Shih-Hsin; Show, Pau Loke
Source:
Bioresource technology 2020 v.304 pp. 122997
ISSN:
0960-8524
Subject:
biofuels,   etc   ; bioactive compounds; biomass; energy; harvesting; lipids; microalgae; polysaccharides; proteins;     Show all 9 Subjects
Abstract:
... Microalgae are autotroph organisms that utilise light energy to synthesize various high-value bioactive compounds such as polysaccharides, proteins and lipids. Due to its fast growth rate and capability to survive in harsh environment, microalgae nowadays are applied in various industrial areas. The process of obtaining microalgae-based biomolecules starts with the selection of suitable microalgae ...
DOI:
10.1016/j.biortech.2020.122997

5. Fuel pellet breakage in pneumatic transport and durability tests

Author:
Abdulmumini Murtala, M.; Zigan, Stefan; Bradley Michael, S.A.; Lestander Torbjörn, A.
Source:
Renewable energy 2020
ISSN:
0960-1481
Subject:
biofuels,   etc   ; durability; dust; models; particle size; pellets; silos; wood products;     Show all 8 Subjects
Abstract:
... Wood pellets for biofuel utilization are fragile and produce fines and dust when handled. Impact resistances of pellets were obtained by using tumbling box tester, ligno tester and rotary impact tester. The samples were sieved after each of the ten consecutive runs to generate a breakage vector of particle size classes: 0–1.00, 1.00–2.36, 2.36–3.15, 3.15–4.75 and > 4.75 mm. Similarly, a full-scale ...
DOI:
10.1016/j.renene.2020.04.116

6. Fast and Isothermal Hydrothermal Liquefaction of Polysaccharide Feedstocks

Author:
Gollakota, Akhila; Savage, Phillip E.
Source:
ACS sustainable chemistry & engineering 2020 v.8 no.9 pp. 3762-3772
ISSN:
2168-0485
Subject:
biofuels,   etc   ; boiling; feedstocks; food waste; heat; hydrothermal liquefaction; pectins;     Show all 7 Subjects
Abstract:
... We investigated the isothermal and fast (short time, rapid heating) hydrothermal liquefaction (HTL) of six different polysaccharides abundant in food waste. Pectin was the polysaccharide most difficult to convert, and the highest biocrude yield it provided from isothermal HTL (350 °C, 31.6 min) was 13 wt %. The highest biocrude yields from isothermal HTL for the other polysaccharides were about 20 ...
DOI:
10.1021/acssuschemeng.9b06873

7. Fast and isothermal hydrothermal liquefaction of sludge at different severities: Reaction products, pathways, and kinetics

Author:
Qian, Lili; Wang, Shuzhong; Savage, Phillip E.
Source:
Applied energy 2020 v.260 pp. 114312
ISSN:
0306-2619
Subject:
biofuels,   etc   ; biomass; decarboxylation; heat; hydrothermal liquefaction; models; nitrogen; sludge; temperature;     Show all 9 Subjects
Abstract:
... Hydrothermal liquefaction has emerged as a preferred means of converting wet biomass to biocrude. In this study, we examined the hydrothermal conversion of sludge over a large range of conditions (300–600 °C, 1–60 min) that included both nominally isothermal processing and non-isothermal processing (rapid heating, short times). An empirical severity index was employed to combine the effects of rea ...
DOI:
10.1016/j.apenergy.2019.114312

8. Effect of harvest region shape, biomass yield, and plant location on optimal biofuel facility size

Author:
Jenkins, Timothy L.; Jin, Enze; Sutherland, John W.
Source:
Forest policy and economics 2020 v.111 pp. 102053
ISSN:
1389-9341
Subject:
biofuels,   etc   ; biomass production; forest resources; fuel production; harvesting; transportation;     Show all 6 Subjects
Abstract:
... The development of biofuel production facilities using renewable biomass faces many hurdles. One of these is determining the appropriate size of the facility under different uncertain conditions. Facility size is affected by many factors including transportation cost rate, biomass yields, facility location, and the availability of harvest region. This research focuses on understanding the impact o ...
DOI:
10.1016/j.forpol.2019.102053

9. Production of bio oil from sweet lime empty fruit bunch by pyrolysis

Author:
Sukumar, V.; Manieniyan, V.; Senthilkumar, R.; Sivaprakasam, S.
Source:
Renewable energy 2020 v.146 pp. 309-315
ISSN:
0960-1481
Subject:
biofuels,   etc   ; biochar; feedstocks; fruits; heat; nitrogen; pyrolysis; stocking rate; temperature;     Show all 9 Subjects
Abstract:
... In this paper, the bio oil is obtained from sweet lime empty fruit bunch as feedstock using fixed bed reactor. The experimental study is to analyze the impacts of feedstock size, temperature and flow rate of nitrogen gas on the bio oil yield. The feed stock size, temperature and nitrogen gas flow rate were varied from 2 mm, 4 mm and 6 mm, 500 °C, 550 °C and 600 °C, 0.2 lit/min, 0.3 lit/min and 0 . ...
DOI:
10.1016/j.renene.2019.06.156

10. The impact of sugarcane expansion in Brazil: Local stakeholders' perceptions

Author:
Marques Postal, Andreia; Pashaei Kamali, Farahnaz; Asveld, Lotte; Osseweijer, Patricia; Silveira, Jose Maria F. J. da
Source:
Journal of rural studies 2020 v.73 pp. 147-162
ISSN:
0743-0167
Subject:
biofuels,   etc   ; case studies; cultivation area; interviews; stakeholders; sugarcane; surveys; Brazil;     Show all 8 Subjects
Abstract:
... Sugarcane expansion in Brazil during the 2000s was partly restricted by several discussions about the sustainability aspects of its cultivation. These discussions were mainly based on surveys that sometimes use highly aggregated data not including local perspectives and particularities, and sometimes used case studies with small samples which, while listening to local perspectives, cannot be consi ...
DOI:
10.1016/j.jrurstud.2019.10.041

11. Recent trends in metabolic engineering of microbial chemical factories

Author:
Liu, Yi; Nielsen, Jens
Source:
Current opinion in biotechnology 2019 v.60 pp. 188-197
ISSN:
0958-1669
Subject:
biofuels,   etc   ; chemical industry; metabolic engineering;     Show all 3 Subjects
Abstract:
... Microbe-mediated chemical production can replace traditional fossil-dependent production and hereby ensure sustainable production of chemicals that are important for our society. Significant success in economical chemical bioproduction has been accomplished by improving the cellular properties of microbial cells through metabolic engineering. The emergence of new techniques and strategies has led ...
DOI:
10.1016/j.copbio.2019.05.010

12. Tailor-made biofuel 2-butyltetrahydrofuran from the continuous flow hydrogenation and deoxygenation of furfuralacetone

Author:
Strohmann, Marc; Bordet, Alexis; Vorholt, Andreas J.; Leitner, Walter
Source:
Green chemistry 2019 v.21 no.23 pp. 6299-6306
ISSN:
1463-9270
Subject:
biofuels,   etc   ; catalysts; green chemistry; hydrogenation;     Show all 4 Subjects
Abstract:
... In this work, we present the first continuous flow process to produce the tailored biofuel 2-butyltetrahydrofuran from renewable resources. In a two-step approach lignocellulose-derived furfuralacetone is first hydrogenated and then deoxygenated over commercial catalysts to form the desired product. Both reactions were studied independently in batch conditions. The transition to a continuous flow ...
DOI:
10.1039/c9gc02555c

13. Purolite-Catalyzed Etherification of 2,5-Bis(hydroxymethyl)furan: A Systematic Study

Author:
Musolino, Manuele; Ginés-Molina, María José; Moreno-Tost, Ramón; Aricò, Fabio
Source:
ACS sustainable chemistry & engineering 2019 v.7 no.12 pp. 10221-10226
ISSN:
2168-0485
Subject:
biofuels,   etc   ; aromatic acids; catalysts; furans;     Show all 4 Subjects
Abstract:
... A library of biofuel candidates, 2,5-bis(alkoxymethyl) furans (BAMFs), was prepared from 2,5-bis(hydroxymethyl)furan (BHMF) by etherification in mild conditions using the acid catalyst Purolite. The purification of the BAMFs has been assessed, and gram-scale experiments have been carried out for two specific examples. The efficiency of this synthetic approach to BAMFs was ascribed to the BHMF-acti ...
DOI:
10.1021/acssuschemeng.9b01413

14. Productivity of innovation in biofuel technologies

Author:
Arnold, Michelle; Tainter, Joseph A.; Strumsky, Deborah
Source:
Energy policy 2019 v.124 pp. 54-62
ISSN:
0301-4215
Subject:
biofuels,   etc   ; public policy; United States;     Show all 3 Subjects
Abstract:
... Biofuels are a regular focus of public policy. The productivity of innovation in biofuel technologies is rarely addressed either in research or policy. Yet as innovation in any field grows complex and costly it can experience reductions in productivity and diminishing returns to investments. We examine here the productivity of investments in the technologies used to produce biofuels, using data fr ...
DOI:
10.1016/j.enpol.2018.09.005

15. Pitfalls in the 3, 5-dinitrosalicylic acid (DNS) assay for the reducing sugars: Interference of furfural and 5-hydroxymethylfurfural

Author:
Deshavath, Narendra Naik; Mukherjee, Gourab; Goud, Vaibhav V.; Veeranki, Venkata Dasu; Sastri, Chivukula V.
Source:
International journal of biological macromolecules 2020 v.156 pp. 180-185
ISSN:
0141-8130
Subject:
biofuels,   etc   ; arabinose; biomass; carbonyl compounds; furfural; glucose; hydroxymethylfurfural; lignocellulose; moieties; oxidation; reducing sugars; value added; xylose;     Show all 13 Subjects
Abstract:
... Transformation of renewable biomass into value-added chemicals and biofuels has evolved to be a vital field of research in recent years. Accurate estimation of reducing sugars post pretreatment of lignocellulosic biomass has been very inconsistent. For a few decades, 3,5-dinitrosalicylic acid (DNS) assay has been widely employed for the estimation of reducing sugars derived from pretreatment of li ...
DOI:
10.1016/j.ijbiomac.2020.04.045

16. Biological insights into non-model microbial hosts through stable-isotope metabolic flux analysis

Author:
Nie, Xiaoqun; Hua, Qiang; Xu, Ping; Yang, Chen
Source:
Current opinion in biotechnology 2020 v.64 pp. 32-38
ISSN:
0958-1669
Subject:
biofuels,   etc   ; analytical methods; biochemical pathways; engineering; genetic engineering; metabolic flux analysis; microorganisms; stable isotopes;     Show all 8 Subjects
Abstract:
... Stable-isotope metabolic flux analysis is an important approach to unravel the metabolic network and its regulation in organisms. It has become a key analytical technology for biotechnological applications. During recent years non-model microorganisms have received increasing attention because they possess unique metabolic capabilities and can serve as a host for production of biofuels and biochem ...
DOI:
10.1016/j.copbio.2019.09.010

17. Sustainable approach of high-pressure agave bagasse pretreatment for ethanol production

Author:
Aguirre-Fierro, Arelí; Ruiz, Héctor A.; Cerqueira, Miguel A.; Ramos-González, Rodolfo; Rodríguez-Jasso, Rosa M.; Marques, Susana; Lukasik, Rafal M.
Source:
Renewable energy 2020 v.155 pp. 1347-1354
ISSN:
0960-1481
Subject:
biofuels,   etc   ; Agave; bagasse; biomass; enzymatic hydrolysis; ethanol; ethanol production; hydrolysates; lignocellulose; monosaccharides; reducing sugars; temperature;     Show all 12 Subjects
Abstract:
... Agave bagasse is one of the most abundant lignocellulosic residues readily available for valorization. The agave bagasse was pretreated by applying high-pressure CO₂–H₂O mixture at temperatures ranging from 150 to 190 °C for a residence time varying from 10 to 50 min. Subsequently, solid phase obtained from pretreatment was subject to enzymatic hydrolysis at high solid loadings. Under optimal cond ...
DOI:
10.1016/j.renene.2020.04.055

18. Systems and synthetic biology tools for advanced bioproduction hosts

Author:
Chen, Yan; Banerjee, Deepanwita; Mukhopadhyay, Aindrila; Petzold, Christopher J
Source:
Current opinion in biotechnology 2020 v.64 pp. 101-109
ISSN:
0958-1669
Subject:
biofuels,   etc   ; analytical methods; bioeconomics; biotechnology; enzymes; genomics; hosts; markets; metabolic engineering; microorganisms; synthetic biology; systems biology;     Show all 12 Subjects
Abstract:
... The genomic revolution ushered in an era of discovery and characterization of enzymes from novel organisms that fueled engineering of microbes to produce commodity and high-value compounds. Over the past decade advances in synthetic biology tools in recent years contributed to significant progress in metabolic engineering efforts to produce both biofuels and bioproducts resulting in several such r ...
DOI:
10.1016/j.copbio.2019.12.007

19. Evidence for cross-polymerization between the biomass-derived furans and phenolics

Author:
Sun, Kai; Zhang, Lijun; Xu, Qing; Zhang, Zhanming; Shao, Yuewen; Dong, Dehua; Gao, Guanggang; Liu, Qing; Wang, Shuang; Hu, Xun
Source:
Renewable energy 2020 v.154 pp. 517-531
ISSN:
0960-1481
Subject:
biofuels,   etc   ; carbon; furfural; furfuryl alcohol; guaiacol; polymerization; polymers; sugars; sulfuric acid; thermal stability; vanillin;     Show all 11 Subjects
Abstract:
... The high tendency of bio-oil towards polymerization is one of the key challenges in hydrotreatment of bio-oil for production of bio-fuels. However, such properties of bio-oil could be used to produce carbon materials, but the mechanism for the polymerization has not been clarified. Bio-oil contains sugars, derivatives of sugars (i.e. furans et al.), phenolic monomers and oligomers. Among of them, ...
DOI:
10.1016/j.renene.2020.03.030

20. Experimental study on composition evolution of biomass pyrolysis vapors with condensing temperature in a vertical tubular condenser

Author:
Wang, Chu; Sun, Mengchao; Deng, Jingjing; Zhu, Xifeng
Source:
Bioresource technology 2020 v.307 pp. 123252
ISSN:
0960-8524
Subject:
biofuels,   etc   ; acetic acid; biomass; furfural; guaiacol; hydraulic flumes; moieties; pyrolysis; quantitative analysis; temperature; vapors; walnut hulls;     Show all 12 Subjects
Abstract:
... The experiments on bio-oil recovery in a vertical tubular condenser with two flumes were conducted for speculating the componential distribution of walnut shell pyrolysis vapors during condensation. Bio-oil elements and functional groups from different locations of condenser were compared with each other. Aromatic H and H in phenolic OH were concentrated in the top and middle bio-oil and their per ...
DOI:
10.1016/j.biortech.2020.123252