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1. Species transport and reaction characteristics between gas and solid phases for ex-situ catalytic pyrolysis of biomass

Author:
Zhang, Yuchun; Fu, Peng; Yi, Weiming; Li, Zhihe; Li, Zhiyu; Wang, Shaoqing; Li, Yongjun
Source:
Energy 2021 v.225 pp. 120212
ISSN:
0360-5442
Subject:
biofuels,   etc   ; biomass; carbon; energy; pyrolysis;     Show all 5 Subjects
Abstract:
... Simultaneous reaction and separation in ex-situ catalytic pyrolysis of biomass was proposed to increase product yield and reduce carbon residue in short residence time. A novel cyclone reactor was designed to implement this process. The low cyclonic flow in the upper part of the reactor can efficiently increase gas (biomass pyrolysis vapors)-solid (catalysts) two-phase contact efficiency, and furt ...
DOI:
10.1016/j.energy.2021.120212

2. Rheological and microscopic characteristics of bio-oil recycled asphalt

Author:
Lv, Songtao; Liu, Jing; Peng, Xinghai; Liu, Hongfu; Hu, Long; Yuan, Jiang; Wang, Jinping
Source:
Journal of cleaner production 2021 v.295 pp. 126449
ISSN:
0959-6526
Subject:
biofuels,   etc   ; bitumen; pavements; petroleum; prices;     Show all 5 Subjects
Abstract:
... At present, the general interest of pavement materials in road engineering is to find a substitute for petroleum asphalt. Bio-oil and recycled asphalt are effective ways to solve this problem. Recycled asphalt is obtained by adding appropriate materials or taking specific measures to restore the waste asphalt properties. Since bio-oil has a comprehensive source, low price, and is mainly composed o ...
DOI:
10.1016/j.jclepro.2021.126449

3. Overcoming Challenges in Expressing Iron–Sulfur Enzymes in Yeast

Author:
Biz, Alessandra; Mahadevan, Radhakrishnan
Source:
Trends in biotechnology 2021 v.39 no.7 pp. 665-677
ISSN:
0167-7799
Subject:
biofuels,   etc   ; biotechnology; enzyme activity; enzymes; sugars; yeasts;     Show all 6 Subjects
Abstract:
... Iron–sulfur clusters are metal cofactors that are present in all domains of life. Many enzymes that require these cofactors have biotechnological importance, because they can be used to uncover catabolic routes to new sugar substrates or can be a critical part of pathways to produce chemicals and biofuels. However, the expression of these iron–sulfur enzymes of bacterial origin in yeast at high le ...
DOI:
10.1016/j.tibtech.2020.11.005

4. Transition to the bioeconomy – Analysis and scenarios for selected niches

Author:
Wydra, Sven; Hüsing, Bärbel; Köhler, Jonathan; Schwarz, Alexander; Schirrmeister, Elna; Voglhuber-Slavinsky, Ariane
Source:
Journal of cleaner production 2021 v.294 pp. 126092
ISSN:
0959-6526
Subject:
biofuels,   etc   ; aviation; bioeconomics; biolubricants; biomass; bioplastics; governance;     Show all 7 Subjects
Abstract:
... Bio-based innovations do not evolve independently from each other, but are interrelated and may enjoy synergies, but also compete for resources (i.e. biomass, skills). Therefore, we explore possible transition pathways that distinct bio-based niches could follow during a joint transformation process. We apply the Multi-Level-Perspective’s transition pathways to the four distinct niches of (i) biop ...
DOI:
10.1016/j.jclepro.2021.126092

5. Hybrid microwave-ultrasound assisted catalyst-free depolymerization of Kraft lignin to bio-oil

Author:
Agarwal, Ashutosh; Jo, Young-Tae; Park, Jeong-Hun
Source:
Industrial crops and products 2021 v.162 pp. 113300
ISSN:
0926-6690
Subject:
biofuels,   etc   ; depolymerization; hybrids; lignin; thermal stability; ultrasonics;     Show all 6 Subjects
Abstract:
... In this study, the simultaneous effect of microwave-ultrasound (MW + US) irradiations was compared with those of microwave (MW) and ultrasound (US) applied individually for the depolymerization of Kraft lignin in a hybrid microwave-ultrasound high pressure chemical reactor. The bio-oils obtained upon depolymerization were analyzed by GC–MS, CHNS, MALDI-TOF-MS, 2D-HSQC NMR, TGA and FTIR techniques. ...
DOI:
10.1016/j.indcrop.2021.113300

6. Global Land Grabbing: A Critical Review of Case Studies across the World

Author:
Yang, Bin; He, Jun
Source:
Land 2021 v.10 no.3
ISSN:
2073-445X
Subject:
biofuels,   etc   ; case studies; geographical distribution; land;     Show all 4 Subjects
Abstract:
... Over the past several decades, land investments have dramatically increased to meet global food and biofuel demands, produce industrial commodities, protect environments and develop urban centres. Scholars and media actors have labelled this phenomenon “land grabbing”, owing to its many negative impacts. Since existing knowledge was generated from individual case-studies, global land grabbing patt ...
DOI:
10.3390/land10030324

7. Microbial co-culturing strategies for the production high value compounds, a reliable framework towards sustainable biorefinery implementation – an overview

Author:
Rosero-Chasoy, Gilver; Rodríguez-Jasso, Rosa M.; Aguilar, Cristóbal N.; Buitrón, Germán; Chairez, Isaac; Ruiz, Héctor A.
Source:
Bioresource technology 2021 v.321 pp. 124458
ISSN:
0960-8524
Subject:
biofuels,   etc   ; biomass; biorefining; coculture; toxicity; wastewater treatment;     Show all 6 Subjects
Abstract:
... The microbial co-cultures or consortia are a natural set of microorganisms formed from different species or the same species but different strains, in which members can interact with each other. The co-culture systems have wide variety of technological applications such as the production of foods, treatment of wastewater, removal of toxic substances, environmental recovery, and all these without t ...
DOI:
10.1016/j.biortech.2020.124458

8. Robust ZSM-5 Membranes for Efficient Bio-Oil Dehydration: Transport Mechanism and Its Implication on Structural Tuning

Author:
Li, Gang; Ma, Shanhong; Ye, Feng; Zhou, Liang; Wang, Yanhong; Lang, Xuemei; Fan, Shuanshi
Source:
Industrial & engineering chemistry process design and development 2021 v.60 no.4 pp. 1799-1807
ISSN:
1520-5045
Subject:
biofuels,   etc   ; esterification; permeability; pervaporation; process design; zeolites;     Show all 6 Subjects
Abstract:
... Effective water removal from bio-oil is very important for upgrading bio-oil quality via esterification because water strongly inhibits the conversion and simultaneously lowers the heating value. In the present study, ZSM-5 zeolite membranes are applied to make bio-oil pervaporation dehydration more efficient. An investigation of the permeation performance demonstrated that water mainly permeated ...
DOI:
10.1021/acs.iecr.0c04671

9. Catalytic ketonization of levoglucosan over nano-CeO2 for production of hydrocarbon precursors

Author:
Zhou, Hao; Akhtar, Muhammad Asif; Wan, Yiling; Ding, Kuan; Ruan, Roger; Zhang, Hong; Zhang, Shu
Source:
Journal of analytical and applied pyrolysis 2020 v.152 pp. 104973
ISSN:
0165-2370
Subject:
biofuels,   etc   ; catalysts; cellulose; pyrolysis;     Show all 4 Subjects
Abstract:
... As one of the major products from cellulose pyrolysis, levoglucosan (LG) is highly oxygenated and stubborn, causing serious problems to bio-oil utilization. In this study, catalytic ketonization of LG over nano-CeO₂ was performed in a pyrolyzer-gas chromatography/ mass spectrometry (PY-GC/MS) system to prepare hydrocarbon precursors (principally ketones). Nano-CeO₂ has been proven effective to con ...
DOI:
10.1016/j.jaap.2020.104973

10. Synthesis of renewable C–C cyclic compounds and high-density biofuels using 5-hydromethylfurfural as a reactant

Author:
Cai, Taimei; Deng, Qiang; Peng, Hailong; Zhong, Jin; Gao, Rui; Wang, Jun; Zeng, Zheling; Zou, Ji-Jun; Deng, Shuguang
Source:
Green chemistry 2020 v.22 no.8 pp. 2468-2473
ISSN:
1463-9270
Subject:
biofuels,   etc   ; green chemistry; hemicellulose;     Show all 3 Subjects
Abstract:
... The major challenge in the synthesis of high-density biofuels is to identify the bio-based source for C–C cyclic compounds and C–C coupling reactions with a suitable selectivity. Herein, we selectively synthesize 1,2,4-benzenetriol (BTO) with a yield of 51.4% from cellulose-derived 5-hydromethylfurfural via a ring-rearrangement reaction. The cellulose-derived route is a more meaningful route for t ...
DOI:
10.1039/d0gc00195c

11. Milking microalgae in conjugation with nano-biorefinery approach utilizing wastewater

Author:
Kashyap, Mrinal; Kiran, Bala
Source:
Journal of environmental management 2021 v.293 pp. 112864
ISSN:
0301-4797
Subject:
biofuels,   etc   ; biorefining; biosynthesis; microalgae; toxicity; wastewater; wastewater treatment;     Show all 7 Subjects
Abstract:
... In today's era, we need to replace chemical or physical processes of nanoparticle synthesis with biosynthesis processes to avoid environmental damage. These bioderived nanoparticles can help in addressing the problems of wastewater treatment and biofuels production. This review gives an insight into solving multiple problems using a nano-biorefinery approach in conjugation with wastewater treatmen ...
DOI:
10.1016/j.jenvman.2021.112864

12. Effect of torrefaction and ashless process on combustion and NOx emission behaviors of woody and herbaceous biomass

Author:
Lee, Byoung-Hwa; Sh, Lkhagvadorj; Lee, Dae-Gyun; Jeon, Chung-Hwan
Source:
Biomass and bioenergy 2021 v.151 pp. 106133
ISSN:
0961-9534
Subject:
biofuels,   etc   ; Hibiscus cannabinus; biomass; carbon; combustion; kenaf; sawdust; torrefaction;     Show all 8 Subjects
Abstract:
... Fuel pretreatment is a type of thermal treatment that enhances biomass properties. This study investigates the impact of different pretreatment methods (torrefaction and ashless processes) on combustion and emission characteristics for two biomass fuel types, i.e., woody (pitch pine sawdust (pine)) and herbaceous (Hibiscus cannabinus L. (kenaf)) biomasses. The fundamental properties and structural ...
DOI:
10.1016/j.biombioe.2021.106133

13. Characterization of a novel strain of Tribonema minus demonstrating high biomass productivity in outdoor raceway ponds

Author:
Davis, Aubrey K.; Anderson, Ryan S.; Spierling, Ruth; Leader, Sara; Lesne, Carly; Mahan, Kristina; Lundquist, Tryg; Benemann, John R.; Lane, Todd; Polle, Jürgen E.W.
Source:
Bioresource technology 2021 v.331 pp. 125007
ISSN:
0960-8524
Subject:
biofuels,   etc   ; Tribonema; biomass production; eicosapentaenoic acid; municipal wastewater; photosynthesis;     Show all 6 Subjects
Abstract:
... Photosynthetic algae represent a large, diverse bioresource potential. Yellow-green algae of the genus Tribonema are candidates for production of biofuels and other bioproducts. We report on a filamentous isolate from an outdoor raceway polyculture growing on municipal reclaimed wastewater which we classified as T. minus. Over one year of cultivation in 3.5 m² raceway ponds fed by reclaimed munici ...
DOI:
10.1016/j.biortech.2021.125007

14. Improved Quality Bio-Crude from Hydrothermal Liquefaction of Oak Wood Assisted by Zero-Valent Metals

Author:
Tai, Lingyu; de Caprariis, Benedetta; Scarsella, Marco; De Filippis, Paolo; Marra, Francesco
Source:
Energy & fuels 2021 v.35 no.12 pp. 10023-10034
ISSN:
1520-5029
Subject:
biofuels,   etc   ; biomass; energy; furans; hydrogen; hydrogenation; hydrothermal liquefaction; synergism; wood;     Show all 9 Subjects
Abstract:
... The production of bio-fuels is becoming one of the biggest challenges of this decade. In this context, the interest on hydrothermal liquefaction (HTL) is continuously growing. In this work, the HTL of oak wood to produce a high-quality bio-crude is proposed. The effect of the use of zero-valent metals (ZVMs) as hydrogen producers (Fe and Zn) and hydrodeoxygenation catalysts (Ni and Co) on bio-crud ...
DOI:
10.1021/acs.energyfuels.1c00889

15. Machine Learning Reduced Order Model for Cost and Emission Assessment of a Pyrolysis System

Author:
Olafasakin, Olumide; Chang, Yahan; Passalacqua, Alberto; Subramaniam, Shankar; Brown, Robert C.; Mba Wright, Mark
Source:
Energy & fuels 2021 v.35 no.12 pp. 9950-9960
ISSN:
1520-5029
Subject:
biofuels,   etc   ; ; biomass; biorefining; carbon dioxide; energy; feedstocks; models; pyrolysis;     Show all 9 Subjects
Abstract:
... Biomass pyrolysis is a promising approach for producing economic and environmentally friendly fuels and bioproducts. Biomass pyrolysis experiments show that feedstock properties have a significant impact on product yields and composition. Scientists are developing detailed chemical reaction mechanisms to capture the relationships between biomass composition and pyrolysis yields. These mechanisms c ...
DOI:
10.1021/acs.energyfuels.1c00490

16. Biofuel characteristic of waste clay oil pyrolysis

Author:
Yuan, Chuan; Liu, Qian; Li, Peijun; Barati, Bahram; Viswanathan, Karthickeyan; Zhao, Shuang; Wang, Shuang; Cao, Bin; Hu, Yamin
Source:
Journal of analytical and applied pyrolysis 2021 v.156 pp. 105117
ISSN:
0165-2370
Subject:
biofuels,   etc   ; clay; cyclization reactions; decarboxylation; kinetics; oils; pyrolysis; temperature; thermogravimetry;     Show all 9 Subjects
Abstract:
... In this work, the pyrolysis characteristics of waste clay oil were studied using thermogravimetric and reaction kinetic analysis. Additionally, the two temperature stages in the pyrolysis process of waste clay oil were analyzed. Furthermore, Py-GC-MS was used to analyze the main products of cracked volatiles at different pyrolysis temperatures, it showed that the higher pyrolysis temperature was b ...
DOI:
10.1016/j.jaap.2021.105117

17. Fast pyrolysis of rice husk under vacuum conditions to produce levoglucosan

Author:
Téllez, Jhoan F.; Silva, Mariana P.; Simister, Rachael; Gomez, Leonardo D.; Fuertes, Valeria C.; De Paoli, Juan M.; Moyano, E. Laura
Source:
Journal of analytical and applied pyrolysis 2021 v.156 pp. 105105
ISSN:
0165-2370
Subject:
biofuels,   etc   ; biomass; cellulose; oils; pyrolysis; rice hulls; temperature;     Show all 7 Subjects
Abstract:
... Levoglucosan (LG)-enriched pyrolytic oils were obtained from rice husk by lab-scale fast pyrolysis under vacuum conditions. We studied the effect of the pyrolysis temperature (300−700 °C) and the pretreatment of the biomass, on the pyrolysis product yields and the selectivity for LG formation. The maximum oil yield (47 wt.%) was obtained from hydrochloric acid-leached rice husk at 400 °C, producin ...
DOI:
10.1016/j.jaap.2021.105105

18. Hydrogenated or oxyfunctionalized turpentine: options for automotive fuel components

Author:
Donoso, David; García, Duban; Ballesteros, Rosario; Lapuerta, Magín; Canoira, Laureano
Source:
RSC advances 2021 v.11 no.30 pp. 18342-18350
ISSN:
2046-2069
Subject:
biofuels,   etc   ; cold; diesel fuel; ethics; feedstocks; industrial wastes; industrialization; turpentine;     Show all 8 Subjects
Abstract:
... Many concerns, such as economic and technical viability and social and ethical aspects, must be considered for a feedstock selection for advanced biofuels. Industrialized countries promote the use of industrial waste or by-products for this purpose. In particular, turpentine has several properties which make it an attractive source for biofuels, including its possible industrial waste origin. Neve ...
DOI:
10.1039/d1ra03003e

19. Engineered Methanotrophy: A Sustainable Solution for Methane-Based Industrial Biomanufacturing

Author:
Nguyen, Anh Duc; Lee, Eun Yeol
Source:
Trends in biotechnology 2021 v.39 no.4 pp. 381-396
ISSN:
0167-7799
Subject:
biofuels,   etc   ; ; biotechnology; biotransformation; carbon; feedstocks; metabolism; methane; methanotrophs;     Show all 9 Subjects
Abstract:
... Methane is a promising feedstock with high abundance and low cost for the sustainable production of biochemicals and biofuels. Methanotrophic bacteria are particularly interesting platforms for methane bioconversion as they can utilize methane as a carbon substrate. Recently, breakthroughs in the understanding of methane metabolism in methanotrophs as well as critical advances in systems metabolic ...
DOI:
10.1016/j.tibtech.2020.07.007

20. Synthesis of High-Density Aviation Biofuels from Biomass-Derived Cyclopentanone

Author:
Li, Zhanchao; Li, Qing; Wang, Yizhuo; Zhang, Jie; Wang, Hong
Source:
Energy & fuels 2021 v.35 no.8 pp. 6691-6699
ISSN:
1520-5029
Subject:
biofuels,   etc   ; ambient temperature; aviation; benzene; carbon; energy; furans; transportation;     Show all 8 Subjects
Abstract:
... Herein, we describe a three-step synthesis strategy starting with a chemical kinetics-governed one-pot two-step reaction. A series of biomass-derived molecules have been converted into ring-structured alkanes suitable for use as transportation fuels or jet fuels with high overall isolated yields of 68–90%. Various biomass-derived molecules can be used as starting materials, which include molecules ...
DOI:
10.1021/acs.energyfuels.1c00185