Article
Energy & Fuels
Anton Alvarez-Majmutov, Sandeep Badoga, Jinwen Chen, Jacques Monnier, Yi Zhang
Summary: The study showed that co-processing deoxygenated pyrolysis bio-oil with vacuum gas oil did not significantly impact baseline hydrocracking selectivity under fixed reaction temperatures, but led to increased hydrogen consumption with higher bio-oil content. Additionally, differences in hydrocarbon composition and fuel properties were observed in the liquid products from different bio-oil blends after co-processing.
Article
Agricultural Engineering
Ann-Christine Johansson, Niklas Bergvall, Roger Molinder, Elena Wikberg, Mirva Niinipuu, Linda Sandstrom
Summary: Energy crops, such as Salix spp., can be used as feedstock for biofuel production. This study investigates the co-refining of pyrolysis oil from Salix with fossil oil using fluidized catalytic cracking and slurry hydro-processing technologies. Both methods achieved significant deoxygenation of the pyrolysis oil, with the hydro-processing route resulting in a higher biogenic carbon yield but requiring hydrogen input. The choice of route depends on factors such as available bio-oil and refining infrastructure.
BIOMASS & BIOENERGY
(2023)
Article
Energy & Fuels
Jianping Su, Liang Cao, Gary Lee, Jonathan Tyler, Anna Ringsred, Michael Rensing, Susan van Dyk, Don O'Connor, Robert Pinchuk, Jack (John) Saddler
Summary: Electrifying the long-distance transport sector is challenging, requiring lower-carbon intensive, drop-in fuels; policies like the low carbon fuels standard (LCFS) are effective in encouraging the production of lower carbon intensity fuels by oil companies; to determine renewable content in fuels, a multiple regression-based mass balance approach combined with C14 analysis can be used when co-processing lower carbon intensive feedstock in a refinery.
Article
Energy & Fuels
Daniel M. Santosa, Igor Kutnyakov, Matthew Flake, Huamin Wang
Summary: Fast pyrolysis and catalytic fast pyrolysis are promising methods for converting lignocellulosic biomass into liquid bio-oils. Coprocessing these bio-oils with petroleum feedstocks reduces capital expenditure and enables fast adoption of the technologies and biofuels.
Article
Thermodynamics
Shuai Zhang, Qingyu Lei, Le Wu, Yuqi Wang, Lan Zheng, Xi Chen
Summary: The co-processing of bio-oil and VGO can reduce production costs by leveraging existing refinery infrastructure, and an effective supply chain design is crucial for further cost reduction. Integration of biomass and crude oil supplies through an optimal network is essential for efficient transportation and storage, with sensitivity analysis evaluating cost parameters.
Article
Energy & Fuels
Kamaldeep Sharma, Daniele Castello, Muhammad Salman Haider, Thomas Helmer Pedersen, Lasse Aistrup Rosendahl
Summary: This study demonstrates the potential of co-hydrodeoxygenation of partially upgraded bio-oil obtained from hydrothermal liquefaction with rapeseed oil to produce bio-derived drop-in fuel. Results showed that temperature and WHSV are important parameters for achieving complete deoxygenation and controlling the properties of co-processed bio-oils. The quality of co-processed bio-oils obtained under optimized conditions showed improved characteristics compared to hydroprocessed oils produced from pure rapeseed oil.
Article
Energy & Fuels
Juan Rafael Garcia, Jayson Fals, Leandro Emanuel Dietta, Ulises Sedran
Summary: In a fluidized bed catalyst, the conversion rate of Argentinian shale oil is higher and similar to that of conventional extraction crude oil, but the conversion rate of the mixture of the two oils is different, mainly due to the influence of aromatics, resins, and asphaltenes in the mixture.
Article
Engineering, Chemical
Meirong Shi, Xin Zhao, Qi Wang, Le Wu
Summary: The study demonstrates that adding bio-oil as a co-feed oil for FCC can significantly reduce environmental impacts, with the optimal bio-oil production technology strongly influenced by FCC capacity and bio-oil co-processing ratio.
Article
Chemistry, Applied
Andrea de Rezende Pinho, Marlon B. B. de Almeida, Pedro R. R. Rochedo
Summary: This study quantifies the renewable-carbon content in FCC products and finds that using bio-oil increases the biogenic carbon content in the liquid effluent and the recovery of coke, while it does not affect the recovery of renewable carbon in the liquid effluent.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Agricultural Engineering
K. Magrini, J. Olstad, B. Peterson, R. Jackson, Y. Parent, C. Mukarakate, K. Iisa, E. Christensen, R. Seiser
Summary: NREL's research focuses on upgrading biomass fast-pyrolysis vapors through ex-situ methods to produce fuel precursors, fuels, and chemicals. Their work demonstrates the feasibility of producing refinery-compatible hydrocarbon fuel intermediates from biomass-derived vapors, as well as the use of these upgraded oils in FCC refinery operations to produce biogenic carbon-containing fuels.
BIOMASS & BIOENERGY
(2022)
Article
Engineering, Mechanical
Jancler Adriano Pereira Nicacio, Vanessa de Freitas Cunha Lins, Alexandre Queiroz Bracarense
Summary: This paper reports the operational data of temperature and pressure obtained during six years of uninterrupted production of the converter assembly of the fluidized catalytic cracking unit of a Brazilian oil refinery. The study showed degradation of the refractory material in the cracking process, with reductions in specific mass, linear dimension, and abrasion resistance, as well as an increase in compressive strength due to coke impregnation.
JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
Rui Diao, Chu Wang, Zejun Luo, Xifeng Zhu
Summary: The study investigated the co-pyrolysis of walnut shells and bio-oil distillation residues to produce bio-oils, with analysis of the effect of lyophilization. The results showed that temperature and mass ratios significantly influenced the bio-oil yield and element distribution, leading to increased phenols in the bio-oils.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Agricultural Engineering
A. Dimitriadis, D. Liakos, U. Pfisterer, M. Moustaka-Gouni, D. Karonis, S. Bezergianni
Summary: This study found that hydrotreated pyrolysis oil can be miscible with different petroleum streams, and in some cases can even improve fuel characteristics, potentially allowing for its integration in oil refineries.
BIOMASS & BIOENERGY
(2021)
Article
Energy & Fuels
Matthew Hurt, Josephine Martinez, Ajit Pradhan, Michelle Young, Michael E. Moir
Summary: The new method based on liquid scintillation counting is able to accurately determine the biocarbon content in liquid fuels without the need for sample preparation, showing a very good correlation with accelerator mass spectrometry. The method has a detection limit below 1% for biocarbon, making it suitable for use in a refinery laboratory setting.
Article
Energy & Fuels
Yangyang Yu, Feng Wang, Bernard Wiafe Biney, Keqi Li, Shouhui Jiao, Kun Chen, He Liu, Aijun Guo
Summary: In this study, needle coke was prepared by co-carbonization of ethylene tar (ET) and refined ethylene tar (ETR) with fluid catalytic cracking decant oil (DO). The results showed that the quality and yield of the needle coke were higher after removing asphaltenes from the ET, indicating improved compatibility between ETR and DO.
Article
Engineering, Environmental
Ismail Cem Kantarli, Stylianos D. Stefanidis, Konstantinos G. Kalogiannis, Angelos A. Lappas
WASTE MANAGEMENT & RESEARCH
(2019)
Article
Chemistry, Physical
A. C. Psarras, C. M. Michailof, E. F. Iliopoulou, K. G. Kalogiannis, A. A. Lappas, E. Heracleous, K. S. Triantafyllidis
MOLECULAR CATALYSIS
(2019)
Article
Energy & Fuels
Konstantinos G. Kalogiannis, Leonidas Matsakas, Angelos A. Lappas, Ulrika Rova, Paul Christakopoulos
Article
Chemistry, Applied
Konstantinos G. Kalogiannis, Stylianos D. Stefanidis, Angelos A. Lappas
FUEL PROCESSING TECHNOLOGY
(2019)
Article
Environmental Sciences
Maria Anna Charitopoulou, Konstantinos G. Kalogiannis, Angelos A. Lappas, Dimitrios S. Achilias
Summary: This paper reviews the existing techniques for recycling plastics from waste electronic and electronic equipment, with a particular focus on catalytic pyrolysis as an environmentally friendly method for producing value-added materials. It also discusses the challenges and trends in recycling plastics containing brominated flame retardants, emphasizing the necessity of pretreatment for debromination. The study highlights the potential of co-pyrolysis and catalytic pyrolysis, along with an emerging technique, microwave-assisted pyrolysis, in enhancing the removal of harmful compounds and producing valuable materials.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Agricultural Engineering
Anthi Karnaouri, Georgia Asimakopoulou, Konstaninos G. Kalogiannis, Angelos Lappas, Evangelos Topakas
BIOMASS & BIOENERGY
(2020)
Article
Agricultural Engineering
Konstantinos G. Kalogiannis, Anthi Karnaouri, Chrysoula Michailof, Anna Maria Tzika, Georgia Asimakopoulou, Evangelos Topakas, Angelos A. Lappas
BIORESOURCE TECHNOLOGY
(2020)
Article
Chemistry, Applied
Caterina Zerva, Stamatia A. Karakoulia, Konstantinos G. Kalogiannis, Antigoni Margellou, Eleni F. Iliopoulou, Angelos A. Lappas, Nikolaos Papayannakos, Konstantinos S. Triantafyllidis
Summary: The study investigated the hydrodeoxygenation of pure phenol and catalytic biomass fast pyrolysis oil over 10%Ni/ZrO2 and 10%Ni/WO3-ZrO2 catalysts. It was found that the addition of WO3 improved the catalytic activity, especially in the complete hydrodeoxygenation of phenol to cyclohexane. The 10%Ni/WO3-ZrO2 catalyst showed high activity and selectivity in both phenol and bio-oil hydrodeoxygenation reactions.
Article
Biotechnology & Applied Microbiology
Grigorios Dedes, Anthi Karnaouri, Asimina A. Marianou, Konstantinos G. Kalogiannis, Chrysoula M. Michailof, Angelos A. Lappas, Evangelos Topakas
Summary: This study optimized the production of fructose from beechwood biomass hydrolysate and the subsequent conversion to HMF using homogeneous catalysis. The results showed that formic acid catalyst was the most effective for the dehydration of fructose to HMF, achieving high sugar conversion rates and HMF yields.
BIOTECHNOLOGY FOR BIOFUELS
(2021)
Article
Agricultural Engineering
Anthi Karnaouri, Georgia Asimakopoulou, Konstantinos G. Kalogiannis, Angelos A. Lappas, Evangelos Topakas
Summary: The use of isobutanol as an organic solvent in the OxiOrganosolv process can efficiently delignify and fractionate beechwood, producing cellulose-rich solid pulp and serving as a carbon source for microbial fermentation. Additionally, the recovery of C5 sugars in the aqueous liquid fractions includes a fraction rich in xylo-oligosaccharides with prebiotic potential.
BIORESOURCE TECHNOLOGY
(2021)
Article
Energy & Fuels
Hilde Vik Halleraker, Konstantinos Kalogiannis, Angelos Lappas, Rafael C. A. Castro, Ines C. Roberto, Solange I. Mussatto, Tanja Barth
Summary: This work evaluates the effect of feedstock type and composition on the conversion of lignin to liquid by solvolysis. The results show that solvolysis is a reliable method for converting lignin samples into bio-oils rich in phenolic compounds, regardless of the purity of the lignin sample. The bio-oil yield can be modeled as a function of the elemental composition of the feedstock. The study also highlights the dominant role of biomass pretreatment in determining the yield and molecular composition of the bio-oil.
Article
Biotechnology & Applied Microbiology
Georgia Asimakopoulou, Anthi Karnaouri, Savvas Staikos, Stylianos D. Stefanidis, Konstantinos G. Kalogiannis, Angelos A. Lappas, Evangelos Topakas
Summary: This study aimed to utilize wheat straw biomass from the Greek agricultural sector to produce PUFAs, specifically DHA. Solid fractions after pretreatment resulted in higher DHA productivity compared to liquid fractions.
FERMENTATION-BASEL
(2021)
Article
Biotechnology & Applied Microbiology
Konstantinos Dimos, Thomas Paschos, Argiro Louloudi, Konstantinos G. Kalogiannis, Angelos A. Lappas, Nikolaos Papayannakos, Dimitris Kekos, Diomi Mamma
FERMENTATION-BASEL
(2019)