Blar i NTNU Open på forfatter "Tran, Khanh-Quang"
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A thermogravimetric and kinetic study on devolatilization of woody biomass
Zabalo Alonso, María (Master thesis, 2016)Biomass is a promising energy resource for a more sustainable global energy outlook. Thermochemical conversion of biomass is a very attractive and important technology for energy generation and production of value-added ... -
Biocarbonization process for high quality energy carriers: Techno-economics
Kempegowda, Rajesh Shivanahalli; Skreiberg, Øyvind; Tran, Khanh-Quang (Journal article; Peer reviewed, 2017)This work deals with a process design and techno-economic analysis (TEA) of the enablement of biocarbonization processes for production of biocarbon, biocrude, biomethane, biofertilizer and heat. Three case scenarios are ... -
CFD modeling for direct liquefaction of biomass in hydrothermal media
Syed, Alizeb Hussain (Master thesis, 2013)The first generation biofuels which is coming from food crops for instance grain and sugar beet are inadequate to achieve desirable oil products because of the scarcity to food supply, therefore the importance of second ... -
CFD modelling and simulation of Nozzle reactor for fast Hydrothermal Liquefaction
Cocco, Gastón Mauricio (Master thesis, 2018)Hydrothermal Liquefaction is a promising technology for converting plant biomass directly to liquid with better fuel properties compared to traditional fast pyrolysis. The technology employs water, in subcritical conditions ... -
CO2 Gasification of Charcoals in the Context of Metallurgical Application
Bui, Hau-Huu; Wang, Liang; Tran, Khanh-Quang; Skreiberg, Øyvind; Luengnaruemitchai, Apanee (Journal article; Peer reviewed, 2017)The CO2 gasification reactivity of Norwegian spruce charcoals from stem wood and its forest residue produced at different pressures was investigated in the present study. The gasification behavior was analyzed thermograv ... -
CO2 Gasification of Charcoals Produced at Various Pressures
Bui, Hau-Huu; Wang, Liang; Tran, Khanh-Quang; Skreiberg, Øyvind (Journal article; Peer reviewed, 2016)In this work, stem wood and branches and tops of Norwegian spruce and birch were carbonized at different pressures, producing charcoals of which the CO2 gasification reactivity was studied by means of a thermogravimetric ... -
CO2 reactivity assessment of woody biomass biocarbons for metallurgical purposes
Wang, Liang; Hovd, Benedicte; Bui, Hau-Huu; Valderhaug, Aasgeir Mikael; Videm Buø, Therese; Birkeland, Rolf Gunnar; Skreiberg, Øyvind; Tran, Khanh-Quang (Journal article; Peer reviewed, 2016)Replacing the use of fossil reductants with biocarbons in metallurgical industries has a great potential with respect to reducing CO2 emissions and the contribution from this industry to the increasing greenhouse gas effect. ... -
Design and optimization of a crossflow tube reactor system for hydrogen production by combining ethanol steam reforming and water gas shift reaction
Chen, Wei-Hsin; Lu, Chen-Yu; Chou, Wei-Shan; Sharma, Amit Kumar; Ayyadurai, Saravanakumar; Tran, Khanh-Quang (Peer reviewed; Journal article, 2022)Crossflow tube reactors with crossflow configuration are considered a special design for hydrogen production via ethanol steam reforming with less catalyst than conventional packed bed reactors. However, the results showed ... -
Effects of wet torrefaction on reactivity and kinetics of wood under air combustion conditions
Bach, Quang Vu; Tran, Khanh-Quang; Skreiberg, Øyvind; Khalil, Roger Antoine; Phan, N. Anh (Journal article; Peer reviewed, 2014)This work continues our assessment of wet torrefaction for energy applications, looking at effects of the process parameters (temperature, holding time and pressure) on the reactivity and intrinsic kinetics of wood under ... -
Elucidating the role of tetraethylammonium in the silicate condensation reaction from Ab initio molecular dynamics simulations
Mai, Ngoc Lan; Do, Ha T.; Hoang, Nguyen-Hieu; Nguyen, Anh H.; Tran, Khanh-Quang; Meijer, Evert Jan; Trinh, Thuat (Journal article; Peer reviewed, 2020)The understanding of the formation of silicate oligomers in the initial stage of zeolite synthesis is important. The use of organic structure-directing agents (OSDAs) is known to be a key factor in the formation of different ... -
Energy-saving drying strategy of spent coffee grounds for co-firing fuel by adding biochar for carbon sequestration to approach net zero
Lee, Kuan-Ting; Tsai, Jai-You; Hoang, Anh Tuan; Chen, Wei-Hsin; Gunarathne, Duleeka Sandamali; Tran, Khanh-Quang; Selvarajoo, Anurita; Goodarzi, Vahabodin (Peer reviewed; Journal article, 2022)Drying is an important but energy-intensive industrial process, while spent coffee grounds can be used as an abundant and potential biomass waste to replace part of the coal consumption for green fuel production and circular ... -
Fast hydrothermal liquefaction of biomass-Development of a plug-flow reactor
Villarreal Salcedo, Manuel (Master thesis, 2017)Hydrothermal liquefaction is a promising technology for converting plant biomass directly to liquid with better fuel properties compared to traditional fast pyrolysis. The technology employs water, in subcritical conditions ... -
Fast hydrothermal liquefaction of native and torrefied wood
Tran, Khanh-Quang; Klemsdal, Aksel Junge; Zhang, Wennan; Sandquist, Judit; Wang, Liang; Skreiberg, Øyvind (Journal article; Peer reviewed, 2017)The work presented in this paper aimed to examine the effect of heating rate on the bio-crude yield of wood hydrothermal liquefaction. Three different heating methods were developed, resulting in heating rates ranging from ... -
Fuel characterization and thermal degradation kinetics of biomass from phytoremediation plants
Tran, Khanh-Quang; Werle, Sebastian; Trinh, Thuat; Magdziarz, Aneta; Sobek, Szymon; Pogrzeba, Marta (Journal article; Peer reviewed, 2020)Biomass obtained from phytoremediation energy crops Miscanthus x giganteus and Sida hermaphrodita planted on different soils contaminated with heavy metals was thermogravimetrically studied and kinetically analyzed, assuming ... -
High-throughput experiments for direct liquefaction of biomass in hydrothermal media
Valcuende Sillero, Miguel (Master thesis, 2013)This project will experimentally assess the use of hydrothermal media for direct liquefaction of biomass for the obtainment of biofuels, using a high throughput experiment technique with different heating methods in quartz ... -
Hydrogen production from methanol partial oxidation through the catalyst prepared using torrefaction liquid products
Chih, Yi-Kai; Chen, Wei-Hsin; Tran, Khanh-Quang (Peer reviewed; Journal article, 2020)This study developed a novel application of torrefaction liquid products (TLPs) for acidic catalyst sol-gel synthesis of SiO2 from tetraethyl orthosilicate (TEOS) to improve the thermal stability of Al2O3 catalyst supporter. ... -
Insight into the role of excess hydroxide ions in silicate condensation reactions
Do, Tuong Ha; Tong, Hien Duy; Tran, Khanh-Quang; Meijer, Evert Jan; Trinh, Thuat (Peer reviewed; Journal article, 2023)The formation of silicate oligomers in the early stages is key to zeolite synthesis. The pH and the presence of hydroxide ions are important in regulating the reaction rate and the dominant species in solutions. This paper ... -
A new design of catalytic tube reactor for hydrogen production from ethanol steam reforming.
Chen, Wei-Hsin; Lu, Chen-Yu; Tran, Khanh-Quang; Lin, Yu-Li; Naqvi, Salman Raza (Peer reviewed; Journal article, 2020)A new design of the catalytic tube system with a crossflow configuration, featured by low catalyst usage and cost, is developed using computational fluid dynamics (CFD). Meanwhile, the kinetics of ethanol steam reforming ... -
Non-Newtonian Analysis of a Counter-flow Mixing Reactor for Fast Hydrothermal Liquefaction
Tran, Khanh-Quang (Chapter, 2020)A CFD (computational fluid dynamics) model has been developed in ANSYNS Fluent for studying the use of the nozzle reactor concept for fast HTL of biomass. A Newtonian system was first assumed to make it possible to utilize ... -
On The Development of a Counter-Flow Mixing Reactor for Fast Hydrothermal Liquefaction
Curakovs, Arturs; Tran, Khanh-Quang (Peer reviewed; Journal article, 2022)A laboratory-scale continuous tubular flow reactor system has been developed for fast HTL (hydrothermal liquefaction) of lignin, adopting the nozzle reactor concept with a counter-flow mixing design. The reactor is capable ...