Eiad-Ua, Apiluck

Preferred name

Eiad-Ua, Apiluck

Alternative Name

Eiad-ua, Apiluck

Eiad-Ua, A.

Eiadua, A.

Main Affiliation

Integrated Innovative Technology

apiluck.ei@kmitl.ac.th

Now showing 1 - 10 of 109

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N-doped Porous Carbon from Palm Male Flower via Hydrothermal Carbonization
(2020-07-30)
Verasarut, Panupong
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Liamprawat, Tanatorn
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Kaewtrakulchai, Napat
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Chutipaijit, Sutee
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Panomsuwan, Gasidit
N-doped porous carbon materials were produced from palm male flower using hydrothermal carbonization processes at 200 C for 24 h followed by N-Doping and carbonization at 700C for 2 h. N-doping was carried out by impregnation using NH4OH at 0.5, 1.0, 1.5 M and 2 M. Products were characterized by means of chemical composition and morphology using SEM, XPS, and XRD to characterize specific properties such as physical morpholog, porosity, elemental composition on surface and crystalline structure of PMF. After applying hydrothermal carbonization processes, the results showed substantially increased porosity and surface area with suitable microstructure for N-doped electrodes applications. The highest porosity was obtained at NPC-1.5 M.
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Effects of hydrothermal temperature and time of hydrochar from Cattail leaves
(2018-09-05)
Jaruwat, Dolrudee
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Udomsap, Parncheewa
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Chollacoop, Nuwong
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Fuji, Masayoshi
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Eiad-Ua, Apiluck
Hydrochar have been successfully synthesized from Cattail leaves via hydrothermal carbonization. This research study the effect of hydrothermal temperature (160-200°C) and reaction time (4-24 h) to develop porosity and surface area. The sample have been characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and Raman spectroscopy were employed to characterize morphology, surface function and disorder in carbon structure respectively. The results revealed that hydrothermal-carbonization process affect on the properties of hydrochar. The hydrothermal temperatures and time were increased resulted in the decomposition of hydrochar gradually increased amorphous carbon and aromatic groups on surface of hydrochar. Cattail leaves was hydrothermal carbonization at 200°C for 12 h resulted in the most degradation of hemicellulose and cellulose.
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Synthesis of copper/carbon support catalyst from Cattail flower by calcination with hydrothermal carbonization
(2017-01-01)
Eiad-Ua, Apiluck
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Jomhataikool, Buntita
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Gunpum, Wachiraporn
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Viriya-Empikul, Nawin
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Faungnawakij, Kajornsak
The copper/carbon support catalysts (Cu/C) were synthesized using Cattail flower as a support by the hydrothermal, impregnation and calcination processes. The effect of the Cu loading (20-60 wt.%) in impregnation method was investigated over Cu/C catalysts. The Cattail flower was pretreated by hydrothermal at 180°C for 8 h with highest specific surface area to produced support catalysts. The copper particles on support catalyst were prepared with impregnation method. The samples were compressed into pellet (diameter of 5 mm) and then calcined at 900°C for 2h under nitrogen atmosphere to obtain the copper/carbon support catalysts. The resulting samples were studied the elemental composition, morphology, and S<inf>BET</inf> by X-ray diffraction (XRD), scanning electron microscopy (SEM) with Energy dispersive X-ray (EDX), and Nitrogen sorption, respectively. The copper particles on the Cu/C catalysts were a metallic phase and high dispersion on the support surface. The Cu loading at 20 wt.% was the optimal condition because of the highest S<inf>BET</inf>. The increasing of Cu loading resulted in the S<inf>BET</inf> and particle size was decreased.
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Catalytic Hydrotreating of Crude Pongamia pinnata Oil to Bio-Hydrogenated Diesel over Sulfided NiMo Catalyst
(2022-02-01)
Plaola, Yuwadee
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Leangsiri, Wanwipa
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Pongsiriyakul, Kanokthip
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Kiatkittipong, Worapon
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Srifa, Atthapon
This work studied the catalytic activity and stability of Ni-MoS2 supported on γ-Al2O3, SiO2, and TiO2 toward deoxygenation of different feedstocks, i.e., crude Pongamia pinnata oil (PPO) and refined palm olein (RPO). PPO was used as a renewable feedstock for bio-hydrogenated diesel production via catalytic hydrotreating under a temperature of 330 °C, H2 pressure of 50 bar, WHSV of 1.5 h−1, and H2/oil (v/v) of 1000 cm3/cm3 under continuous operation. The oil yield from a Soxhlet extraction of PPO was up to 26 wt.% on a dry basis, mainly consisting of C18 fatty acids. The catalytic activity in terms of conversion and diesel yield was in the same trend as increasing in the order of NiMo/γ-Al2O3 > NiMo/TiO2 > NiMo/SiO2. The hydrodeoxygenation (HDO) activity was more favorable over the sulfided NiMo supported on γ-Al2O3 and TiO2, while a high DCO was observed over the sulfided NiMo/SiO2 catalyst, which related to the properties of the support material and the intensity of metal–support interaction. The deactivation of NiMo/SiO2 and NiMo/TiO2 occurred in a short period, due to the phosphorus and alkali impurities in PPO which were not found in the case of RPO. NiMo/γ-Al2O3 exhibited the high resistance of impure feedstock with excellent stabil-ity. This indicates that the catalytic performance is influenced by the purity of the feedstock as well as the characteristics of the catalysts.
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Present advancement in production of carbon nanotubes and their derivatives from industrial waste with promising applications
(2017-01-01)
Kerdnawee, Konrat
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Termvidchakorn, Chompoopitch
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Yaisanga, Pacharaporn
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Pakchamsai, Jirapat
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Chookiat, Cheewapon
An increase in global consumption has led to an exponential increase in industrial production activities which inevitably results in overwhelming remain of industrial waste. Consequently it has driven increasing attentions of research and development teams in various countries to propose and investigate novel methodologies to utilize such industrial waste. Instead of using as alternative energy sources, usage of industrial waste for production of carbonaceous nanomaterials has been examined via various routes, such as catalytic pyrolysis, hydrothermal treatment and so on. Meanwhile, for sustainable and secure continuity of the carbonaceous nanomaterial production, broad spectra of promising applications have also been examined. Among those emerging applications, utilization of carbonaceous nanomaterials in pollution control and prevention has been focused worldwide. Therefore, in this review, relevant research works focusing on catalytic pyrolysis of carbonaceous industrial waste for carbonaceous nanomaterial production were comprehensively analyzed and summarized. In addition, promising applications involving with antibiotic removal, spilled oil handling and pollutant gas detection were also reviewed.
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Influence of crystallization time for synthesis of zeolite a and zeolite x from natural kaolin
(2019-01-01)
Srilai, Suphada
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Tanwongwan, Worapak
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Onpecth, Kobchai
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Wongkitikun, Thanapat
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Panomsuwan, Gasidit
Zeolite A and zeolite X were successfully synthesized from natural kaolin from Lampang province using calcination and a two-step hydrothermal method. First, metakaolin was obtained by calcining the kaolin at 700 °C for 2 h. Hydrothermal experiments can be separated into two types, being high temperature and short time or lower temperature long time. For high temperature hydrothermal treatment, metakaolin was mixed with NaOH to form hydrous sodium aluminosilicate. This was dissolved in dilute HCl. After filtration, the pH was adjusted with deionized water to pH = 7. This formed an amorphous aluminosilicate gel. For low temperature and longtime hydrothermal treatment aluminosilicate gel was mixed with NaOH to form zeolite A and zeolite X. The optimum condition for the first step in the synthesis of zeolite A is high temperature and short time of hydrothermal treatment with NaOH 8 M at 200 °C for 3 hours. This is followed by low temperature and longtime of hydrothermal treatment with NaOH 1 M carried out at 90 °C for 72 hours. The optimum conditions for the first step of synthesis of zeolite X is the high temperature, short time hydrothermal treatment with NaOH 8 M at 200 °C for 3 hours and low temperature, longtime hydrothermal treatment with NaOH 1 M at 90 °C for 120 hours. The characterizations of zeolite A and zeolite X were carried out by x-ray diffraction (XRD), scanning electron microscopy (SEM), and infrared spectroscopy (FT-IR).
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Nanoporous Carbon from Durian Peel via Hydrothermal-Carbonization and their Application in Ripening Delay of Durian
(2020-07-30)
Sitthisantikul, Thanat
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Poolsili, Pee
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Devakula, Jindabha
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Jaruwanawat, Anuchit
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Eiad-Ua, Apiluck
This research was aimed to examine conditions on synthesis of nanoporous carbon materials from durian peel via the process of hydrothermal carbonization (HTC) as an application for delaying durian ripening process. The experiment was conducted by using durian peel as materials for producing nanoporous carbon via the process of hydrothermal at 160-200 C for 8-24 hours. It also included the process of carbonization at 500-900 C for 2 hours under nitrogen atmosphere for developing pore structure and removing contaminants to obtain the nanoporous carbon. The properties of nanoporous carbon were characterized by scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FT-IR) and Raman spectrometer analysis. The results indicated that the process of hydrothermal at 200 C for 12 hours and carbonization at 900 C for 2 hours was suitable for delaying ripe durian. This is become of the carbon content, porous structure and amorphous structure increased with HTC temperature.
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A novel photocatalyst of Y2O3-BaO-ZnO ternary system for enhanced photocatalytic degradation of carbofuran insecticide
(2024-08-01)
Sujinnapram, Supphadate
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Krobthong, Sucheewan
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Moungsrijun, Sasimonton
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Boonruang, Chatdanai
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Kaewtrakulchai, Napat
A novel Y<inf>2</inf>O<inf>3</inf>-BaO-ZnO ternary system was synthesized via precipitation of a mixture of Y(NO<inf>3</inf>)<inf>3</inf>.6 H<inf>2</inf>O:Ba(NO<inf>3</inf>)<inf>2</inf>:Zn(NO<inf>3</inf>)<inf>2</inf>.6 H<inf>2</inf>O using some Fibonacci sequences. The Y<inf>2</inf>O<inf>3</inf>-BaO-ZnO was applied to the photocatalyst to investigate the degradation of carbofuran insecticide. The Y<inf>2</inf>O<inf>3</inf>-BaO-ZnO prepared at the sequence ratio of 5:8:13 (YBZ5) exhibited the highest photocatalytic performance. Morphological characterization showed that the particle size of the YBZ5 sample was significantly smaller than that of ZnO by over half, possibly providing high surface areas. The crystalline structure, functional group, and surface chemical composition investigations confirmed the presence of Y<inf>2</inf>O<inf>3</inf>, BaO, and ZnO. The fluorescence study exhibited no difference. Based on band gap energy and energy band alignment analysis, the Y<inf>2</inf>O<inf>3</inf>-BaO-ZnO ternary system demonstrated a well-aligned valence band. The energy band alignment analysis revealed a good alignment of the valence band for continuous hole transport in the Y<inf>2</inf>O<inf>3</inf>-BaO-ZnO ternary system. The alignment induces charge separation which reduces recombination and provides efficient active carriers at the surfaces of the photocatalyst, allowing reactions with toxic molecules. Therefore, the synergistic function of high surface areas and appropriate energy band alignments of the novel Y<inf>2</inf>O<inf>3</inf>-BaO-ZnO ternary system is considered the crucial factor in the enhancement of photocatalytic performance.
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Effect of alkaline activation on low grade natural kaolin for synthesis of zeolite A
(2016-01-01)
Asawaworarit, Panuruj
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Chollacoop, Nuwong
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Viriya-Empikul, Nawin
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Eiad-Ua, Apiluck
The conventional technique to synthesizes zeolite A from kaolin is calcination. However, this technique has one drawback since, the impurities in kaolin, such as muscovite and quartz, remain. Therefore, the hydrothermal process without calcination is used to synthesize high purity zeolite A. Hydrothermal synthesis without calcination can be separated into two steps, namely first and second hydrothermal steps. Alkaline activation reaction in the first hydrothermal step was used to study the effect of NaOH concentration ranging from 4M, 6M, 8M, 10M to 12M at 200°C for 3 hours. In this step, sodium aluminosilicate (cancrinite and nepheline hydrate) was produced and then dissolved in HCl. After filtration, the impurity was removed, and adjusted for neutral pH of 7 to form amorphous aluminosilicate gel. For the second hydrothermal step, amorphous gel was mixed with NaOH (1-4M) to form zeolite A at 90°C for 3 days. The x-ray diffraction (XRD) and Scanning Electron Microscope (SEM) were used for characterization.
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Surface Enhancement and Structure Formation of Metakaolin from Thailand Kaolin on the Various Calcination Temperature
(2020-01-01)
Tanwongwan, Worapak
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Wongkitikun, Thanapat
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Onpecht, Kobchai
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Srilai, Suphada
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Assabumrungrat, Suttichai
The metakaolin was chosen as a starting material for the synthesis of the zeolite because it is high crystallinity, reactivity and purity of raw material. Kaolin from Thailand which was selected from 3 different sources including Ratchaburi, Lampang, and Uttaradit were using as starting materials for synthesis of metakaolin by calcination temperature of this study were chosen in the range of 500 to 1000 °C for 2 h. Calcination temperature is significantly affect crystalline size, function group, and configuration of metakaolin by the results which obtained from X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectroscopy, and scanning electron microscopy techniques were indicated that the best metakaolin was obtained from Uttaradit's kaolin which was calcined at 1000 oC for 2h by it shows the lowest impurities.

Eiad-Ua, Apiluck

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