Search Results - "Ghysels, Stef"

Comment on “Redox-Active Oxygen-Containing Functional Groups in Activated Carbon Facilitate Microbial Reduction of Ferrihydrite” by Ghysels, Stef, Ronsse, Frederik

“…Ghysels and Ronsse comment on the study investigating microbial ferrihydrite reduction in the presence of modified activated carbon with different types and…”
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Production and characterization of slow pyrolysis biochar from lignin-rich digested stillage from lignocellulosic ethanol production by Ghysels, Stef, Ronsse, Frederik, Dickinson, Dane, Prins, Wolter

“…Lignin-rich digested stillage as a novel feedstock for biochar production was subjected to slow pyrolysis. The lignin residue stemmed from a lignocellulosic…”
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Effluent recirculation enables near-complete oxidation of organics during supercritical water oxidation at mild conditions: A proof of principle by Zhang, Dongdong, Ghysels, Stef, Ronsse, Frederik

“…This work presents a continuous set-up for SCWO, which was operated at mild conditions (380 °C, 25 MPa, oxidant equivalence ratio of 2.0 and residence time of…”
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Biochar and activated carbon enhance ethanol conversion and selectivity to caproic acid by Clostridium kluyveri by Ghysels, Stef, Buffel, Sara, Rabaey, Korneel, Ronsse, Frederik, Ganigué, Ramon

“…[Display omitted] •Ethanol and acetic acid from syngas were converted into caproic acid by C. kluyveri.•Biochar (BC) and activated carbon (AC) foster…”
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Analytical (hydro)pyrolysis of pinewood and wheat straw in chloride molten salts: A route for 2-methyl furan production by Estrada Leon, Adriana, Ramamurthy, Racchana, Ghysels, Stef, Niazi, Sepideh, Prins, Wolter, Ronsse, Frederik

“…2-methyl furan (MF) is a fuel additive with improved fuel characteristics compared to bio-ethanol. Unfortunately, the production of MF (from furfural (FF)…”
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Engineering the Reaction Environment: Hydropyrolysis of Lignin in Molten Salts with Catalytic Vapor-Phase Upgrading in a Tandem Micropyrolyzer by Ghysels, Stef, Léon, Adriana Estrada, Van Cleemput, Arthur, Ronsse, Frederik

“…The continuous exploration and subsequent optimization of new biomass conversion strategies to provide biobased chemicals and/or fuels remains key to build a…”
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High furfural and levoglucosan selectivity from stepwise torrefaction and fast pyrolysis of sugarcane trash washed with citric acid by Wu, Nannan, Leon, Adriana Estrada, Ghysels, Stef, Pieters, Jan, Ronsse, Frederik

“…[Display omitted] •A green and effective strategy for biomass valorization was proposed.•Citric acid (CA) washing promoted furfural production during the…”
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Coke formation and mineral accumulation on HZSM-5/Al2O3 catalysts during in-situ catalytic fast pyrolysis of microalgae over multiple regeneration cycles by Niu, Qi, Du, Xin, Li, Kai, Ghysels, Stef, Lu, Qiang, Prins, Wolter, Ronsse, Frederik

“…Catalyst deactivation caused by coke formation and mineral accumulation occurs simultaneously and intensively during the catalytic pyrolysis of biomass. A…”
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Improving biochar properties by co-pyrolysis of pig manure with bio-invasive weed for use as the soil amendment by Qiu, Jing, Fernandes de Souza, Marcella, Robles-Aguilar, Ana A., Ghysels, Stef, Ok, Yong Sik, Ronsse, Frederik, Meers, Erik

“…Over recent years, pyrolysis has grown into a mature technology with added value for producing soil improvers. Further innovations of this technology lie in…”
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Levoglucosenone, furfural and levomannosan from mannan-rich feedstock: A proof-of-principle with ivory nut by Ghysels, Stef, Estrada, Adriana, Vanderhaeghen, Lena, Rousseau, Diederik, Dumoulin, Ann, Backx, Simon, Mangelinckx, Sven, Ronsse, Frederik

“…This work pioneers the thermocatalytic conversion of tagua seeds (or ivory nut) from the palm Phytelephas aequatorialis into key chemical building blocks,…”
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Biochar stability scores from analytical pyrolysis (Py-GC-MS) by Ghysels, Stef, Rathnayake, Dilani, Maziarka, Przemyslaw, Mašek, Ondřej, Sohi, Saran, Ronsse, Frederik

“…The long-term stability of biochar in soil is key for carbon capture and storage and soil amelioration. Yet, its assessment is hampered by the long…”
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Exploring Image Processing Tools To Unravel Complex 1 H– 13 C Heteronuclear Single-Quantum Correlation Nuclear Magnetic Resonance Spectra: A Demonstration for Pyrolysis Liquids by Ghysels, Stef, Verwaeren, Jan, Heeres, Hero Jan, Rohrbach, Léon, Backx, Simon, Mangelinckx, Sven, Ronsse, Frederik

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Effects of demineralization on the composition of microalgae pyrolysis volatiles in py-GC–MS by Niu, Qi, Ghysels, Stef, Wu, Nannan, Rousseau, Diederik P.L., Pieters, Jan, Prins, Wolter, Ronsse, Frederik

“…•Acid leaching breaks down the chemical structure of carbohydrates and proteins.•Pretreatment effects on pyrolysis volatiles have been discussed.•Removal of…”
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Microwave assisted and conventional hydrothermal treatment of waste seaweed: Comparison of hydrochar properties and energy efficiency by Soroush, Sepideh, Ronsse, Frederik, Park, Jihae, Ghysels, Stef, Wu, Di, Kim, Kyoung-Woong, Heynderickx, Philippe M.

“…Waste seaweed is a valuable source for converting into value-added carbon materials. In this study, the production of hydrochar from waste seaweed was…”
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Evaluation of South Korean marine waste resources for hydrochar production: Effect of process variables by Siddhartha, Tatwadhika Rangin, Kooy, Elisa, Kashif, Muhammad, Che, Clovis Awah, Ghysels, Stef, Wu, Di, Ronsse, Frederik, Heynderickx, Philippe M.

“…[Display omitted] •Marine waste resources are used for hydrochar production.•Crustaceans yield more hydrochar than vertebrates.•Varying reaction temperatures…”
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How to trace back an unknown production temperature of biochar from chemical characterization methods in a feedstock independent way by Rathnayake, Dilani, Maziarka, Przemyslaw, Ghysels, Stef, Mašek, Ondřej, Sohi, Saran, Ronsse, Frederik

“…[Display omitted] •24 biochar samples from 12 different feedstocks were characterised using five different chemical characterization methods.•Five feedstock…”
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Exploring Image Processing Tools To Unravel Complex 1H–13C Heteronuclear Single-Quantum Correlation Nuclear Magnetic Resonance Spectra: A Demonstration for Pyrolysis Liquids by Ghysels, Stef, Verwaeren, Jan, Heeres, Hero Jan, Rohrbach, Léon, Backx, Simon, Mangelinckx, Sven, Ronsse, Frederik

“…Pyrolysis liquids are very complex and heterogeneous in composition. This makes them hard to comprehensively analyze, which is one of the hurdles that could…”
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Hydrothermal carbonisation of manure-derived digestates: Chemical properties and heavy metals distribution in end-products by Luisa de Castro e Silva, Hellen, Ghysels, Stef, Robles-Aguilar, Ana A., Akyol, Çağrı, Ronsse, Frederik, Meers, Erik

“…[Display omitted] •The lignocellulosic biomass led to significantly higher carbon content in hydrochars.•The highest HMs immobilisation in hydrochars occurred…”
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Fast pyrolysis of mannan-rich ivory nut (Phytelephas aequatorialis) to valuable biorefinery products by Ghysels, Stef, Estrada Léon, Adriana Elena, Pala, Mehmet, Schoder, Katharina Alexandra, Van Acker, Joris, Ronsse, Frederik

“…[Display omitted] •Fast pyrolysis of mannan-rich ivory nut was performed at 350 °C and 500 °C.•Pyrolysis liquids (yield 58–60 wt%) were rich in levomannosan…”
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Ex Situ Catalytic Fast Pyrolysis of Lignin-Rich Digested Stillage over Na/ZSM-5, H/ZSM-5, and Fe/ZSM‑5 by Priharto, Neil, Ghysels, Stef, Pala, Mehmet, Opsomer, Wim, Ronsse, Frederik, Yildiz, Güray, Heeres, Hero Jan, Deuss, Peter J, Prins, Wolter

“…The global increase in lignocellulosic ethanol production goes in tandem with an increase in lignin-rich stillage that remains underutilized to date. Anaerobic…”
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