Chuayboon, Srirat
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Preferred name
Chuayboon, Srirat
Alternative Name
Chuayboon, S.
Main Affiliation
Email
srirat.ch@kmitl.ac.th
36 results
Now showing 1 - 10 of 36
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Item type:Publication, Chemical Looping CH4 Reforming Through Isothermal Two-Step Redox Cycling of SrFeO3 Oxygen Carrier in a Tubular Solar Reactor(2025-03-01) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Solar-driven chemical looping reforming of methane over SrFeO3-δ-Ca0.5Mn0.5O nanocomposite foam(2022-09-15); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Optimization of Carbon Dioxide Reduction in Biohythane Using an Innovative Water Scrubber(2019-04-09); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Combined ZnO reduction and methane reforming for co-production of pure Zn and syngas in a prototype solar thermochemical reactor(2021-01-01); Abanades, StéphaneSolar thermochemical conversion processes offer a promising avenue for storing intermittent solar energy into high value chemical products. A directly-irradiated packed-bed reactor was developed to experimentally investigate the solar thermochemical methane reforming combined with ZnO reduction for co-production of Zn and syngas in a single process. On-sun experiments were conducted to demonstrate reliable process operation and to identify optimal operating conditions, considering the impact of reduced and atmospheric pressures, temperatures, and inlet methane flow-rates. A pressure decrease enhanced net ZnO conversion at the expense of lowered syngas selectivity attributed to the CO<inf>2</inf> increase because of insufficient gas residence time. Increasing temperature promoted syngas production rate, yield, ZnO and methane conversion at the expense of favored methane cracking which can be alleviated by lowering pressure. The maximum H<inf>2</inf> and CO yields of 28.4 and 4.6 mmol/g<inf>ZnO</inf>, and the maximum net ZnO conversion and methane conversion (67.3% and 57.6%) were achieved from non-isothermal tests. The calorific value of chemical products was upgraded by solar energy (U up to 1.31), and η<inf>solar-to-chemical</inf> = 3.9% was achieved. Pure and highly reactive metallic Zn was produced with well crystallized structure in micrometric size, demonstrating the feasibility of combined solar methane reforming and ZnO reduction for synthetic fuel production and sustainable Zn metallurgy. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Carbon-neutral synfuel production via continuous solar H2O and CO2 gasification of oil palm empty fruit bunch(2023-10-15); Abanades, StéphaneSolar gasification offers a promising carbon-neutral pathway to thermochemically convert waste biomass and solar energy into synfuel. In this study, a thermodynamic analysis of solar gasification of oil palm empty fruit bunch (EFB) with H<inf>2</inf>O and CO<inf>2</inf> gasifying agents was first performed to predict equilibrium product distribution. Subsequently, on-sun continuous solar gasification of EFB was experimentally carried out in a solar particle-fed gasifier to evaluate the influence of gasifying agent types (H<inf>2</inf>O and CO<inf>2</inf>), gasifying agent/EFB molar ratios (1.8–3.4), temperatures (1050–1350 °C), and to assess overall process feasibility and reliability. As a result, solar EFB gasification performed efficiently with both H<inf>2</inf>O and CO<inf>2</inf> gasifying agents under continuous on-sun operation. Syngas product composition and gasification reaction rate strongly depended on gasifying agent type. Increasing temperature enhanced syngas yield and quality, and changed the CO/H<inf>2</inf> mole ratio, especially in EFB + CO<inf>2</inf> gasification. A gasifying agent/EFB molar ratio of 2.6 (slight excess of gasifying agents) and a temperature of 1300 °C were shown to be optimal for continuous solar EFB gasification. The maximum total syngas yield above 76 mmol/g<inf>dry_EFB</inf>, syngas lower heating value above 22 kJ/g<inf>dry_EFB</inf>, and energy upgrade factor above 1.37 were achieved from both EFB + H<inf>2</inf>O and EFB + CO<inf>2</inf> gasification, which closely approached their theoretical equilibrium values. The maximum carbon conversion exceeding 93% and solar-to-fuel energy conversion efficiency up to 19.3% were achieved, demonstrating efficient EFB-to-synfuel conversion performance. Continuous solar EFB gasification with both H<inf>2</inf>O and CO<inf>2</inf> was thus established to be a reliable process for EFB waste biomass valorization into high-quality and carbon-neutral synfuel. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Comprehensive analysis of on-sun catalytic reforming of methane with a hydroxyapatite-supported nickel catalyst in a tubular solar reactor(2026-07-22); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Solar metallurgical process for high-purity Zn and syngas production using carbon or biomass feedstock in a flexible thermochemical reactor(2023-05-05); Abanades, StéphaneCo-production of high-purity Zn and syngas via carbothermal reduction of ZnO was performed in a directly-irradiated concentrated solar reactor, thereby converting and storing intermittent sunlight into high-value chemical fuels and commodities. On-sun experiments were carried out by varying operating parameters including solid carbonaceous feedstocks (either solid carbon or beech wood biomass) in batch and continuous modes at 950–1350 °C, demonstrating solar reactor flexibility and robustness. Decreasing pressure (150–400 hPa) promoted both ZnO reduction rate and net ZnO conversion above 78%, thus enhancing Zn production yield. Nevertheless, CO selectivity decreased because of rising CO<inf>2</inf> due to the residence time decrease. A remarkable increase in gas production rates/yields, CO selectivity, and reaction extent was highlighted when increasing temperature during continuous pellets reactant injection. Furthermore, utilizing wood biomass as a sustainable green reducer was proved to be an attractive choice to produce both metallic Zn and high-quality syngas in a single process consisting of biomass gasification with solid ZnO. Zn content exceeding 90 wt% was demonstrated for both batch and continuous tests, unveiling high reactor performance for the metallurgical process. The energy content of the feedstock was upgraded by the solar power input (maximum energy upgrade factor up to 1.2), and the maximum solar-to-fuel energy conversion efficiency up to ∼ 6% was achieved with continuous reactant injection. The high-purity Zn can be further used to produce fuel via CO<inf>2</inf>-splitting in a complete and fast reaction. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Syngas production via solar-driven chemical looping methane reforming from redox cycling of ceria porous foam in a volumetric solar reactor(2019-01-15); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Comparative Performance Evaluation of Solar-Driven Methane Reforming with ZnO for Co-Production of Syngas and Metallic Zn(2023-10-06); Abanades, StéphaneSolar-driven methane reforming with ZnO for co-production of hydrogen-rich syngas and metallic Zn was demonstrated in a flexible solar thermochemical reactor prototype fully powered by highly concentrated sunlight under batch and continuous operation. This process provides a practical way to store solar energy into the chemical products while reducing reliance on conventional energy resources that emit CO2 and other pollutants. On-sun experiments were conducted using various operating parameters, including temperature (900-950 °C), pressure (0.15–0.90 bar) and inlet ZnO feeding rate (0.5–1.0 g/min), in both batch and continuous operation, to demonstrate solar reactor flexibility and reliability. The ZnO+CH4 reaction performance between batch and continuous operation was studied and compared. As a result, reducing pressure to vacuum condition improved the net ZnO conversion and lowered side methane cracking reaction, but favored CO2 yield because of insufficient gas residence time. Rising ZnO feeding rate under a constant CH4/ZnO molar ratio of 1.5 promoted Zn and syngas yields. In comparison, continuous operation outperformed batch operation in terms of higher ZnO conversion, higher syngas yield, and reduced methane cracking. Both batch and continuous operation yielded high-purity metallic Zn with a well-crystallized structure and micrometric size particles, thus exhibiting suitable reactor performance for the solar thermochemical methane-driven ZnO reduction process. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Solar chemical looping gasification of biomass with the ZnO/Zn redox system for syngas and zinc production in a continuously-fed solar reactor(2018-03-01);