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Janusz A. Kozinski
University of Waterloo
Supercritical fluidCatalysisChemistrySyngasBiomass
18Publications
5H-index
71Citations
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Publications 21
Newest
#1Jude A. OkolieH-Index: 2
#2Sonil NandaH-Index: 20
Last. Janusz A. KozinskiH-Index: 33
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Abstract Biofuels produced from lignocellulosic feedstocks are gaining popularity because of the elevating energy demand, increasing greenhouse gas emissions, escalating fuel prices and dwindling fossil fuel resources. Therefore, it has become important to seek alternative energy resources from renewable waste biomass. In this study, agricultural crop residues such as soybean straw and flax straw were gasified in subcritical water (300 °C) and supercritical water (400 and 500 °C) for H2 producti...
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#1Jude A. Okolie (U of S: University of Saskatchewan)H-Index: 2
#2Sonil Nanda (U of S: University of Saskatchewan)H-Index: 20
Last. Janusz A. Kozinski (UW: University of Waterloo)H-Index: 5
view all 5 authors...
Abstract Lignocellulosic feedstocks such as forestry biomass and agricultural crop residues can be utilized to generate biofuels and biochemicals. In addition, a large amount of non-plant residues or biogenic wastes is also generated worldwide that has huge potentials but remains underutilized. Converting these organic waste materials through thermochemical and biochemical processes into biofuels is widely regarded as a remedial approach to address waste management and clean energy problems. One...
1 CitationsSource
#1Sonil Nanda (UWO: University of Western Ontario)H-Index: 20
#2Sivamohan N. Reddy (IITR: Indian Institute of Technology Roorkee)H-Index: 12
Last. Iskender Gökalp (CNRS: Centre national de la recherche scientifique)H-Index: 30
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Abstract Massive amounts of waste tires are generated globally posing disposal and recycling challenges. Waste tires were gasified in subcritical and supercritical water to study their degradation behavior during syngas production. The process parameters including temperature (325 °C to 625 °C), reaction time (15 min to 60 min) and feed concentration (5 wt% to 20 wt%) were optimized to maximize gas yields from waste tires. The highest total gas yields (34 mmol/g), hydrogen yields (14.4 mmol/g) a...
2 CitationsSource
#1Jude A. Okolie (U of S: University of Saskatchewan)H-Index: 2
#2Sonil Nanda (UWO: University of Western Ontario)H-Index: 20
Last. Janusz A. Kozinski (UW: University of Waterloo)H-Index: 5
view all 4 authors...
Abstract Hydrothermal gasification in subcritical and supercritical water is gaining attention as an attractive option to produce hydrogen from lignocellulosic biomass. However, for process optimization, it is important to understand the fundamental phenomenon involved in hydrothermal gasification of synthetic biomass or biomass model compounds, namely cellulose, hemicellulose and lignin. In this study, the response surface methodology using the Box-Behnken design was applied for the first time ...
3 CitationsSource
#1Sivamohan N. Reddy (IITR: Indian Institute of Technology Roorkee)H-Index: 12
#2Sonil Nanda (UWO: University of Western Ontario)H-Index: 20
Last. Janusz A. Kozinski (UW: University of Waterloo)H-Index: 5
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Abstract Hydrothermal flame is produced in an aqueous environment beyond the thermodynamic critical properties of water. It is an interface developed at the contact of oxidant and fuel in supercritical water and depends on the operating parameters. In-situ diffusion-limited hydrothermal flames were generated in a novel supercritical flame reactor designed by the National Aeronautics and Space Administration (NASA) at Glenn Research Center to investigate the impacts of oxidant flow rate and tempe...
1 CitationsSource
#1Rachita Rana (U of S: University of Saskatchewan)H-Index: 5
#2Sonil Nanda (UWO: University of Western Ontario)H-Index: 20
Last. Ajay K. Dalai (U of S: University of Saskatchewan)H-Index: 57
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Abstract Subcritical and supercritical water gasification of petroleum coke and asphaltene was performed at variable temperatures (350–650 °C), feed concentrations (15–30 wt%) and reaction times (15–60 min). Nickel-impregnated activated carbon (Ni/AC) was synthesized as a catalyst for enhancing syngas yields at optimal gasification conditions (650 °C, 15 wt% and 60 min). Structural chemistry of precursors and chars developed at different gasification temperatures was studied using physicochemica...
5 CitationsSource
#1Jude A. Okolie (U of S: University of Saskatchewan)H-Index: 2
#2Rachita Rana (U of S: University of Saskatchewan)H-Index: 5
Last. Janusz A. Kozinski (UW: University of Waterloo)H-Index: 5
view all 5 authors...
The global energy demand has laid emphasis on the exploration of alternate sources of energy. With the application of many thermochemical and biochemical technologies, waste biomass can be converted into green fuels. Gasification is one of the most effective thermochemical (biomass-to-gas) technologies that can transform organic substrates into combustible syngas. Supercritical water gasification is an iteration of conventional gasification that uses water as the reaction medium to efficiently d...
8 CitationsSource
#1Sonil Nanda (UWO: University of Western Ontario)H-Index: 20
#2Rachita Rana (U of S: University of Saskatchewan)H-Index: 5
Last. Janusz A. Kozinski (UW: University of Waterloo)H-Index: 5
view all 6 authors...
Abstract Substantial amounts of waste cooking oil are obtained worldwide from household and catering enterprises because of deep-frying and other cooking activities. Supercritical water gasification is considered as an aqueous phase reforming process to produce hydrogen enriched syngas from biomass and other organic wastes. In this study, waste cooking oil was gasified at variable temperatures (375–675 °C), feed concentration (25–40 wt%) and reaction time (15–60 min) to investigate their effects...
9 CitationsSource
#1Rachita RanaH-Index: 5
#2Sonil NandaH-Index: 20
Last. John AdjayeH-Index: 25
view all 5 authors...
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#1Ning Chen (CUMT: China University of Mining and Technology)
#2Janusz A. Kozinski (American Hereford Association)H-Index: 5
Last. Yamin Tan (CUMT: China University of Mining and Technology)
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AbstractObjectives: Public transport vehicles (PTVs) play a decisive role in development of the urban economy. However, the safety of PTVs is threatened by the man-released chemical or arson attack. It was found that indoor air safety can be greatly improved by employing air-rain ventilation instead of the common ventilation in a PTV.Methods: Numerical simulations and experiments have been done to prove the effectiveness of the air-rain flow against chemical attack or arson in PTVs.Results: The ...
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