Pinnarat, Tanawan
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Item type:Publication, Solubility effect of deep eutectic solvent and ethanol concentration on corncob lignin extraction(2024-12-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Hydrothermal reaction of cellulose in ionic liquid catalyzed by Er(OTf)3(2022-12-01); Wongkam, NattajakThis research explores the potential of ionic liquid to improve lactic acid yield of the hydrothermal reaction of cellulose. The research premise was that ionic liquid dissolved cellulose and water into liquid phase, which would facilitate the formation of glucose and lactic acid using water-tolerant catalyst Erbium (III) trifluoromethanesulfonate (Er(OTf)<inf>3</inf>). Contrary to the research premise, the experiment revealed that dissolving cellulose in ionic liquid prior to hydrothermal reaction lowered lactic acid yield while increasing hydroxymethylfurfural (HMF) yield. The phenomenon could be attributed to dissociation of water and ionic liquid to give hydronium ion and chloride ion, which subsequently formed hydrochloric acid (HCl). HCl catalyzed cellulose into HMF, in addition to lactic acid. Pressure and pressurized gas had minimal impact on the yield of lactic acid, while the hydrothermal reaction was affected by type of cation and anion of ionic liquid. The highest lactic acid yield of 54.26% was achieved by using 1-butyl-3 methylimidazolium chloride ionic liquid, with 190 °C, 30-min, 10 bar CO<inf>2</inf> initial pressure, and Er(OTf)<inf>3</inf> 50 wt% cellulose. Meanwhile, the highest HMF yield of 66.06% was realized with 1-butyl-3-methylimidazolium hydrogen sulfate in the absence of Er(OTf)<inf>3</inf>. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Optimization and kinetics modeling of phenolics extraction from coffee silverskin in deep eutectic solvent using ultrasound-assisted extraction(2023-07-01) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Biodiesel production from unrefined krating (Calophyllum Inophyllum) seed oil using supercritical methanol(2017-10-01); Kajorncheappunngam, SomjaiThis study investigated the feasibility of biodiesel production from unrefined Krating (Calophyllum inophyllum) seed oil using supercritical methanol transesterification reaction. The experiments were conducted under various conditions of reaction temperature (200, 240, 260, 300, and 350°C), pressure (8, 12, 14, 16, and 18 MPa), and oil-to-methanol molar ratio (1:20, 1:40, and 1:60). All reactions were run at a constant reaction time of 10 minutes. Results showed that oil-to-methanol molar ratio, temperature, pressure, and their interactions significantly affected fatty acid methyl ester (FAME) yield. The highest FAME yield of 90.4% by weight was achieved at 260°C, 16 MPa, and an oil-to-methanol molar ratio of 1:40. This study also showed a significant decrease in acid value of Krating seed oil from 29 mg to 0.3 mg KOH per gram of oil compared to its biodiesel product. Moreover, most physical properties (kinematic viscosity, density, iodine number, flash point and water content) of our biodiesel product were comparable to the standard biodiesel EN14214. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Development and thermal performance of a portable solar cooker using glycerol-erythritol phase change material(2026-07-01);