Apiluck Eiad-Ua

King Mongkut's Institute of Technology Ladkrabang

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Napat Kaewtrakulchai

Kasetsart University

Masayoshi Fuji

Nagoya Institute of Technology

Nuwong Chollacoop

National Science and Technology Development Agency

Gasidit Panomsuwan

Kasetsart University

Suttichai Assabumrungrat

Chulalongkorn University

Atthapon Srifa

Mahidol University

Worapon Kiatkittipong

Silpakorn University

Tawatchai Charinpanitkul

Chulalongkorn University

Kajornsak Faungnawakij

National Nanotechnology Center

Nawin Viriya‐empikul

King Mongkut's University of Technology Thonburi

Cooperative Institutions

King Mongkut's Institute of Technology Ladkrabang

Chulalongkorn University

National Science and Technology Development Agency

National Nanotechnology Center

Kasetsart University

Mahidol University

King Mongkut's University of Technology Thonburi

King Mongkut's University of Technology North Bangkok

National Institute of Advanced Industrial Science and Technology

Kyoto University

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Production of γ-Valerolactone from Methyl Levulinate via Catalytic Transfer Hydrogenation on Nickel-Copper Oxide Catalyst

Materials science forum (2016)

Worapak Tanwongwal Sanchai Kuboon Wasawat Kraithong Apiluck Eiad-Ua

γ-Valerolactone (GVL) is successfully produced via catalytic transfer hydrogenation from methyl levulinate on nickel copper oxide catalysts with the comparable result to that of Raney-nickel. This catalyst is prepared at lower temperature (lower than 1000oC) and pretreatment is not required before its use. Among different calcination temperature, Ni-Cu-O which synthesis at 700oC shows the best catalytic performance with 100% methyl levulinate conversion and more than 95% GVL yield and characterization result was shows this calcination temperature was affect catalyst to highest crystallization and surface area. The study of atomic ratio effect indicates that nickel-copper oxide which had nickel oxide more than copper oxide is better for this reaction.

Nickel oxide

Copper oxide

Raney nickel

10.4028/www.scientific.net/msf.872.187

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Synthesis of nanoporous carbon from brewer waste by hydrothermal carbonization assisted chemical activation for carbamazepine adsorption

Case Studies in Chemical and Environmental Engineering (2024)

Naruemon Apinyakul Sirayu Chanpee Napat Kaewtrakulchai Narathon Khemasiri Apiluck Eiad-Ua

Nanoporous carbon (NPC) has gained significant attention in wastewater treatment due to its effectiveness. The adsorption process, known for its simplicity, stability, and cost-effectiveness, is widely recognized as an efficient method for removing carbamazepine (CBZ) residues accumulate in the environment. However, the application of NPC is often hindered by challenges in the regeneration process after use, as well as issues related to large surface area, pore size, and functional groups. Fortunately, the samples in this study not only maintained their adsorption efficiency but also demonstrated the ability to be regenerated multiple times. Herein brewery waste was subjected to hydrothermal treatment at 200 °C for 1 h and followed by KOH and NaCl activation with different KOH:NaCl (w/w) ratios of 5:0, 4:1, 3:2, 1:1, 2:3, 1:4, and 0:5 to optimize the properties of malt husk derived nanoporous carbon (NPC). The optimal condition KOH:NaCl ratio of 1:1 had a maximum specific surface area of 906 m2/g with a total pore volume of 0.252 . According to the adsorption test, the CBZ adsorption isotherm was well-fitted to the Langmuir model (R2 = 0.976) kinetic data were consistent with the pseudo-second-order model (R2 = 0.995). This suggests that the adsorption mechanism involves monolayer adsorption and chemisorption interaction. The Gibbs free energy and enthalpy of CBZ adsorption by NPC were found to be spontaneous and endothermic. The regeneration test revealed a 95.35% decrease in the adsorption capacity of NPC after 5 repeated cycles. Consequently, the study suggests a potential application of nanoporous carbon from MH as an alternative adsorbent for removing carbamazepine in wastewater.

Hydrothermal Carbonization

Nanoporous

Carbon fibers

10.1016/j.cscee.2024.100716

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Enhancing the Hydrodeoxygenation and Isomerization using Re Nanoparticles Decorated on Ni/SAPO‐11 Catalysts for Direct Production of Low‐Cold Flow Diesel from Triglycerides

ChemCatChem (2023)

Jirawat Chuseang Vorranutch Itthibenchapong Atthapon Srifa Wanichaya Praikaew Soontorn Tuntithavornwat

Abstract The novel bifunctional Ni−Re supported on bimodal SAPO‐11 catalyst was designed for an economically combined process of direct triglycerides hydro‐deoxygenation and isomerization into low‐cold flow diesel. The catalyst with a Ni to Re molar ratio of 1 : 0.12 exhibited superior performance for diesel production containing large fraction of iso‐alkanes in comparison to Ni and Re benchmarks. Comprehensive characterizations revealed that the detection of Ni and Re co‐existed with NiO and ReO x on SAPO‐11 after the reduction confirmed by XRD, XANES, and XPS analysis gave a large distribution of Lewis acid sites (>80 %) noticed by Pyridine‐DRIFTS measurement. Under investigations of WHSV, reaction temperature, and H 2 pressure, the NiRe 0.12 catalyst contributed a nearly theoretical 77.1 % liquid yield, accompanied by a 18.2 % jet‐range and 52.1 % diesel‐range yields with a classification for 46.8 % iso‐alkanes and 23.5 % normal alkanes yields; whereas, the cold‐flow properties of liquid product were in the ranges of winter diesel standard. It was remarkably noticed that the combination effects of Ni and nanosized Re species substantially improved the diesel production comprising iso‐alkanes components with proper catalyst lifetime and low carbon deposition attributing to the fabricated active metal species on bimodal SAPO‐11 features with large distribution of Lewis acidic sites.

Hydrodeoxygenation

Deoxygenation

Vegetable oil refining

10.1002/cctc.202300543

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Corrigendum to “A novel photocatalyst of Y2O3-BaO-ZnO ternary system for enhanced photocatalytic degradation of carbofuran insecticide” [Mater. Today Commun. 40 (2024) 109501]

Materials Today Communications (2024)

Supphadate Sujinnapram Sucheewin Krobthong Sasimonton Moungsrijun Chatdanai Boonruang Napat Kaewtrakulchai

Carbofuran

Degradation

10.1016/j.mtcomm.2024.109666

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Decomposition of Phenol in Water by Ozone Oxidation with Metal-Supported Carbongel

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN (2009)

Noriaki Sano Takuji Yamamoto Hiroki Shinomiya Akira Endo Apiluck Eiad-Ua

Porous carbongel beads supporting Co or Ni were prepared to enhance decomposition of phenol in water with ozone oxidation. The carbongel beads were synthesized by carbonization of resorcinol-formaldehyde (RF) gel beads whose diameter was approximately 1 mm. Co and Ni were supported on carbongel beads by impregnation with soluble nitrate salts of Co and Ni followed by thermal decomposition and post-oxidation treatment. In the experiments to decompose phenol, the enhancement effects of the carbongels supporting Co or Ni were observed, in which the degradation rate of phenol with these gels were larger than that with pristine carbongel or without any carbongel. In comparison between Co and Ni, Co showed larger enhancement effect. In these experiments, the concentration of the residual ozone in water was monitored. It was revealed that the residual ozone is significantly reduced when Co was used. In the experiments with varied temperature 5, 15, 25°C, the phenol degradation rate became the highest when the temperature was 5°C, while the higher temperature of 25°C was preferable when a reduced concentration of residual ozone is demanded.

Resorcinol

Degradation

10.1252/jcej.08we130

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Porosity enhancement of biochar derived from rubber sawdust using steam injection at low temperature

Napat Kaewtrakulchai Apiluck Eiad-Ua Patrick Rousset

Biochar is extremely interesting for energy and environment applications such assoil amender, sorbent materials and biofuels. In this study, rubber sawdust (RS) was prepared through the pyrolysis at 400 and 600°C with low and high heating rate (7 and 20°C/min) for 60 minutes.The pyrolytic parameters have a strong influence on biochar properties. Biochar yield was decreased from 33.1 to 22.6 wt% due to increasing of pyrolytic temperature. The higest BET surface area of biochar previous enhanced porosity was found about 410 m2/g at 600°C with 20°C/min of heating rate with particle size 0.3-1 mm. Afterwards, biochar porosity was enhanced through the steam injection process. Furthermore, the physicochemical properties of biochar product (i.e. surface morphology, BET surface area, and N2adsorption isotherm) will be characterized. (Texte integral)

Pyrolytic carbon

Sawdust

BET theory

Specific surface area

Source

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Effect of Nb doping on the structural, optical, and photocatalytic properties of SrTiO₃ nanopowder synthesized by sol-gel auto combustion technique

Journal of Asian Ceramic Societies (2022)

Pornnipa Nunocha Malinee Kaewpanha Theerachai Bongkarn Apiluck Eiad-Ua Tawat Suriwong

Metal oxide photocatalyst is a promising wastewater treatment process due to its simplicity, high efficiency, and low cost, as well as being environmentally friendly and non-energy consuming. The perovskite structure material, SrTi1−xNbxO3 (STNO) with x = 0, 0.01, 0.03, and 0.05, was successfully synthesized by the sol-gel auto-combustion method. Samples with a pure phase and cubic perovskite structure were obtained. The Rietveld refinement results showed that the lattice parameter and unit cell density increased as the Nb-doping level increased. The particle size of the STNO decreases with increasing Nb doping content. Photoluminescence was excited at 327 nm, producing violet, green, and blue emissions, while the Nb content asserts an insignificant effect on the bandgap (Eg). The Nyquist plot and Mott-Schottky analysis were used to determine the photoelectrode performance of the STNO samples. The photocatalytic activity of STNO on the decolorization of methylene blue (MB) under UV irradiation increased with increasing Nb content and optimization at x = 0.05, corresponding to the results obtained from photoluminescence, Eg, Nyquist plot, and Mott-Schottky analyses.

Nyquist plot

Rietveld Refinement

10.1080/21870764.2022.2094556

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Dependence of MWCNT production via co-pyrolysis of industrial slop oil and ferrocene on growth temperature and heating rate

Journal of Analytical and Applied Pyrolysis (2020)

Weerawut Chaiwat Napat Kaewtrakulchai Pimpage Sangsiri Apiluck Eiad-Ua Winadda Wongwiriyapan

Atmospheric temperature range

Carbon fibers

10.1016/j.jaap.2020.104878

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Transformation of Waste Marigold Flowers into Porous Carbons via Hydrothermal Carbonization

Key engineering materials (2019)

Nattapat Chaiammart Sittan Wongcharoen Apiluck Eiad-Ua Takahiro Ishizaki Gasidit Panomsuwan

Vast quantities of marigold flowers are often discarded as waste at sacred places and temples after religious ceremonies in Thailand. This has motivated us to examine the utilization of waste marigold flowers as a precursor for the synthesis of porous carbons by hydrothermal carbonization (HTC) and pyrolysis. Waste marigold flowers were hydrothermally treated at 180 °C for 2, 12, and 24 h. The resultant hydrochars were subsequently pyrolyzed at 800 °C under argon (Ar) atmosphere. Based on X-ray diffraction and Raman spectroscopy analyses, the samples exhibited an amorphous phase regardless of HTC time. With increasing HTC time, the marigold surface became rougher and more ruptured. This resulted in the development of a porous structure, thereby increasing surface area. The specific surface area of carbon samples increased from 118 to 281 m 2 /g with HTC increasing from 2 to 24 h, respectively. Increase of specific surface area mainly resulted from the development of a microporous structure at longer HTC times. Our results offer guidelines to control surface area and porosity through the adjustment of HTC conditions.

Hydrothermal Carbonization

Specific surface area

Carbon fibers

Charcoal

10.4028/www.scientific.net/kem.824.23

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Highly porous carbon materials for adsorbent from water hyacinth via hydrothermal carbonization

AIP conference proceedings (2020)

Sirayu Chanpee Nattaya Suksai Napat Kaewtrakulchai Sutee Chutipaijit Masayoshi Fuji

Carbon nanoparticles have been successfully synthesized from waste lignin via carbonization and base activation. The effect of base activation on lignin transformation to carbon nanoparticles was investigated. Carbon nanoparticles from waste lignin via carbonization and base activation were denoted as CNPs. The physicochemical properties of CNPs were comprehensively characterized through a Scanning electron microscope (SEM), X-ray diffraction (XRD), and Raman spectroscopy. The results revealed that the condition using 5 wt% of sodium hydroxide (NaOH) and carbonization at 700°C on N2 atmosphere exhibited the highly porous structure of carbon nanoparticles. In conclusion, the NaOH-treated CNPs led to the production of high specific surface areas and high micropore volumes.

Hydrothermal Carbonization

Carbon fibers

Specific surface area

Sodium hydroxide

Polyacrylonitrile

10.1063/5.0025044

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Citations (1)