Journal of The Japan Institute of Energy最新文献_第8页

Methanol Dehydration to Dimethyl Ether over Kaolinite-supported TiO2 Catalysts 高岭石负载TiO2催化剂上甲醇脱水制二甲醚的研究

IF 0.2

Journal of The Japan Institute of Energy Pub Date : 2021-12-20 DOI: 10.3775/jie.100.313

Imran Rosadi, Arthit Neramittagapong, Pakpoom Athikaphan, P. Punrattanasin, Sutasinee Neramittagapong

{"title":"Methanol Dehydration to Dimethyl Ether over Kaolinite-supported TiO2 Catalysts","authors":"Imran Rosadi, Arthit Neramittagapong, Pakpoom Athikaphan, P. Punrattanasin, Sutasinee Neramittagapong","doi":"10.3775/jie.100.313","DOIUrl":"https://doi.org/10.3775/jie.100.313","url":null,"abstract":"The present work aims to study the catalytic performance of kaolinite (KN)-supported TiO 2 in the production of dimethyl ether (DME) from methanol. KN was doped with 0, 3, 5, 10, and 15 wt% Ti composite particles via the sol-gel method. The performance of the TiO 2 /KN catalysts were then tested in a fixed-bed reactor having a temperature in the range 200-350 ° C under atmospheric pressure. The molar ratio of methanol to nitrogen, total gas flow rate, and weight hourly space velocity (WHSV) were set to 1:4, 60 mL/min at standard temperature and pressure, and 2.054 h -1 , respectively. The catalysts were characterized using scanning electron microscopy, the Brunauer-Emmett-Teller method, X-ray diffraction, and temperature-programmed desorption of NH 3 . The final products were analyzed using gas chromatography. An increase in Ti loading yielded a higher methanol conversion rate owing to the increase in the number of acid sites on the catalyst surface. The highest methanol conversion rate of 79% was reported for TiO 2 /KN (Ti=15%) at 350 ° C. However, TiO 2 /KN (Ti=15%) exhibited low selectivity to DME owing to the decomposition of DME to CH 4 and CO 2 . Our results indicate the optimum Ti loading to be TiO 2 /KN (Ti=10%), which resulted in a catalyst that was active at 250 ° C and showed good selectivity to DME.","PeriodicalId":17318,"journal":{"name":"Journal of The Japan Institute of Energy","volume":"34 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81337409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characterization of Vertically Aligned MoS2 Thin Film on Mo Electrode for Hydrogen Evolution Catalyst 析氢催化剂Mo电极上垂直排列MoS2薄膜的表征

IF 0.2

Journal of The Japan Institute of Energy Pub Date : 2021-12-20 DOI: 10.3775/jie.100.283

Joo-Youn Kim, Kazuki Takahashi, Takato Takaetsu, Takenobu Funatsu

{"title":"Characterization of Vertically Aligned MoS2 Thin Film on Mo Electrode for Hydrogen Evolution Catalyst","authors":"Joo-Youn Kim, Kazuki Takahashi, Takato Takaetsu, Takenobu Funatsu","doi":"10.3775/jie.100.283","DOIUrl":"https://doi.org/10.3775/jie.100.283","url":null,"abstract":"Vertically aligned MoS 2 (V-MoS 2 ) thin film was investigated to achieve a cost-effective hydrogen evolution reaction (HER) catalyst. As a simple method, the V-MoS 2 film was deposited by partial sulphurisation of RF sputtered Mo film. The residual Mo layer was used as a bottom electrode instead of an expensive conductive substrate such as a glassy carbon. Different thicknesses of V-MoS 2 were deposited to investigate an HER catalyst characteristic for the V-MoS 2 /Mo structure. The crystallinity of V-MoS 2 was maintained even though the thickness of V-MoS 2 was controlled, and was confirmed by comparing the X-ray diffraction, Raman measurement, and estimated exchange current density. As the thickness of V-MoS 2 was decreased to 50 nm, the overpotential and Tafel slope were reduced to 0.38 V at 10 mA/cm 2 and 87 mV/dec, respectively. Based on the theoretical tendency of Tafel slope decline, the estimated optimal V-MoS 2 thickness was 40 nm for the V-MoS 2 /Mo structure. The fabrication process for V-MoS 2 and the estimated result from the variation of the thickness of V-MoS 2 could help to realise a cost-effective HER catalyst using MoS 2 .","PeriodicalId":17318,"journal":{"name":"Journal of The Japan Institute of Energy","volume":"32 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80752836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Heat and Mass Transfer of Impinging Jet Flow with Shower Head Flow on a Heated Disc in a Cylindrical Flow Channel 圆柱流道内带淋浴头流的冲击射流传热传质研究

IF 0.2

Journal of The Japan Institute of Energy Pub Date : 2021-12-20 DOI: 10.3775/jie.100.273

Fumika Satō, Satoki Ishida, Yuuhei Kawasaki, Misaki Honda, K. Tanoue

{"title":"Heat and Mass Transfer of Impinging Jet Flow with Shower Head Flow on a Heated Disc in a Cylindrical Flow Channel","authors":"Fumika Satō, Satoki Ishida, Yuuhei Kawasaki, Misaki Honda, K. Tanoue","doi":"10.3775/jie.100.273","DOIUrl":"https://doi.org/10.3775/jie.100.273","url":null,"abstract":"The horizontal temperature measurement on the heated disc in the cylindrical hydrogen flow channel with impinging jet was performed to examine the effect of the non-dimensional distance between the gas inlet and the heated disc (HN*) and the nozzle Reynolds number (ReN) on the heat transfer in a chemical vapor deposition (CVD) reactor. Furthermore, two dimensional numerical simulation in heat and mass transfer on the heated disc was conducted to predict the growth rate distribution along the r-coordinate in the CVD reactor. The less HN* created, the lower the experimental temperature at r* = 0 mm because of the impinging jet flow. The calculation temperature along the r-coordinate agreed well with the experimental temperature except for HN* = 0.69 at r* = 0. When the non-dimensional surface reaction rate constant k* was 3.60×10-9 ≦ k*≦ 1.27×10-7 (k = 10-6 m/s), the predicted growth rate of the source material on the heated disc decreased exponentially with the r-direction because the film formation could proceed under the diffusion rate-determining condition along the radial direction. On the other hand, at the central region the influence of mass transfer due to forced convection discharged from the jet becomes stronger at 0.036 ≦ k*≦ 0.126 (k = 1 m/s) than that at 3.60×10-9 ≦ k* ≦ 1.27×10-7 (k = 10-6 m/s) and the film formation rate is greatly attenuated. The higher the distance from the nozzle to the heated disc HN got, the smaller the gradient of the growth rate in the r-direction at 0 ≦ r* ≦ 3.45 because the mass transfer could be controlled by the surface reaction if the HN* increased. The more the HN* and the less the reaction rate were constant, the smaller the coefficient of variation of the growth rate. In this study, the minimum coefficient of variation for the growth rate distribution was about 0.41. Therefore, it is suggested that the hybrid supply system of the raw material for chemical vapor deposition from not only impinging jet flow but also shower head flow could be suitable.","PeriodicalId":17318,"journal":{"name":"Journal of The Japan Institute of Energy","volume":"23 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80044317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Catalytic Esterification of Palm Fatty Acid Distillate into Biodiesel Over Sulfonated Iron Oxide Catalyst 磺化氧化铁催化棕榈脂肪酸馏出物酯化制备生物柴油

IF 0.2

Journal of The Japan Institute of Energy Pub Date : 2021-12-20 DOI: 10.3775/jie.100.301

Michelle Matius, M. S. Mastuli

{"title":"Catalytic Esterification of Palm Fatty Acid Distillate into Biodiesel Over Sulfonated Iron Oxide Catalyst","authors":"Michelle Matius, M. S. Mastuli","doi":"10.3775/jie.100.301","DOIUrl":"https://doi.org/10.3775/jie.100.301","url":null,"abstract":"The palm fatty acid distillate (PFAD), as a low-cost feedstock, was catalytically esterified into biodiesel (also known as fatty acid methyl ester, FAME) using sulfonated iron oxide (HSO 3 ˉ /Fe 2 O 3 ) catalyst. In this work, the catalyst was synthesised via self-propagating combustion (SPC) method, towards a greener synthesis technique, followed by sulfonation with chlorosulfonic acid (HSO 3 Cl) to enhance the catalyst ’ s acid properties. The catalysts were characterised and the success of sulfonation process was determined. From this study, Fe 2 O 3 catalysts were proven to be pure and single-phase. The success of the sulfonation then was verified by the presence of sulfur, functional groups of S-O asymmetric vibration and S=O symmetric vibration, and increasing total acidity. Then, the sulfonated Fe 2 O 3 catalyst was used to esterify the PFAD feedstock in methanol in which the esterification parameters were also optimized to obtain maximum free fatty acid (FFA) conversion. It was found that 15:1 of methanol-to-PFAD molar ratio, 4 wt.% of catalyst loading, 80 ° C of reaction temperature and 5 h of reaction time produced 95.5% of FFA conversion. Interestingly, the sulfonated Fe 2 O 3 catalyst can be considered as a superacid solid catalyst that enables boosting the esterification of the PFAD feedstock into biodiesel.","PeriodicalId":17318,"journal":{"name":"Journal of The Japan Institute of Energy","volume":"65 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90634079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Computational Fluid Dynamics Simulation and Energy Consumption Analysis of Metal Hydride in Its Hydrogen Charging Process 金属氢化物充氢过程的计算流体动力学仿真及能耗分析

IF 0.2

Journal of The Japan Institute of Energy Pub Date : 2021-12-20 DOI: 10.3775/jie.100.294

D. Hara, Chiharu Misaki, N. Katayama, K. Dowaki

{"title":"Computational Fluid Dynamics Simulation and Energy Consumption Analysis of Metal Hydride in Its Hydrogen Charging Process","authors":"D. Hara, Chiharu Misaki, N. Katayama, K. Dowaki","doi":"10.3775/jie.100.294","DOIUrl":"https://doi.org/10.3775/jie.100.294","url":null,"abstract":"Metal hydride is an alloy that reversibly reacts with hydrogen gas. Because it has low hydrogen storage pressure, it can contribute to the abatement of compression power in the hydrogen charging process. Despite this fact, owing to the exothermic reaction in its charging process, a longer hydrogen charging time is required. As a countermeasure to this problem, a cooling process for the metal hydride bed is necessary to enhance the reaction rate of the hydrogen charging process. Considering this background, in this study, an energy consumption comparison between metal hydride and compressed hydrogen (conventional) is conducted. In addition, a mathematical model of the hydrogen charging process is developed to estimate the effect of the metal hydride cooling process on the hydrogen charging time. The mathematical model is validated by comparison with experimental results and used to simulate different cooling conditions (outside temperature: 233, 253, 273, and 298 K). It was found that metal hydride could reduce the compression power compared to compressed hydrogen (maximum reduction of 7.57 kwh/kg-H2) and reduce the hydrogen charging time by removing reaction heat from the metal hydride tank (886 s at outside temperature 233 K, 1902 s at 273 K).","PeriodicalId":17318,"journal":{"name":"Journal of The Japan Institute of Energy","volume":"313 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77405460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Production of Cellulose From Bamboo Shoot Shell Using Hydrothermal Technique 水热法制备竹笋壳纤维素的研究

IF 0.2

Journal of The Japan Institute of Energy Pub Date : 2021-12-20 DOI: 10.3775/jie.100.307

Kanjana Manamoongmongkol, Rachit Suwapanich, Lamphung Phumjan, Woatthichai Narkrugsa, Pongsert Sriprom

{"title":"Production of Cellulose From Bamboo Shoot Shell Using Hydrothermal Technique","authors":"Kanjana Manamoongmongkol, Rachit Suwapanich, Lamphung Phumjan, Woatthichai Narkrugsa, Pongsert Sriprom","doi":"10.3775/jie.100.307","DOIUrl":"https://doi.org/10.3775/jie.100.307","url":null,"abstract":"The preparation and characterization of purified cellulose from bamboo shoot shell were studied using fouriertransform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The preparation of cellulose fiber included extraction of cellulose from bamboo shoot shell by treatment with 5 % NaOH and 4 % H2O2, and purification of cellulose fiber using hydrothermal technique. The result showed that cellulose has been successfully extracted at a 32.56% yield by the 5% NaOH / 4% H2O2 treatment, and the purified cellulose was produced using autoclaving at the temperature of 120 °C and pressure at 0.1 MPa for 2 h 5 min, with the % recovery of purified cellulose around 94.08. Bamboo shoot shell and cellulose sample were further characterized using FTIR technique. It was found that the 5% NaOH / 4% H2O2 treatment eliminated lignin and hemicellulose from bamboo shoot shell but did not affect cellulose. The hydrothermal technique did not affect the destruction of the cellulose structure as well. Comparison of the SEM image showed that cellulose was separated into individual microfibers after the 5% NaOH / 4% H2O2 treatment while the SEM image of purified cellulose was the small thread-like fibers with smoother surface. Therefore, hydrothermal treatment can be performed for purification of cellulose.","PeriodicalId":17318,"journal":{"name":"Journal of The Japan Institute of Energy","volume":"142 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80223838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Optimizing Ammonia Adsorption Using Activated Carbon from Tamarind Pulp 罗望子浆活性炭吸附氨的优化研究

IF 0.2

Journal of The Japan Institute of Energy Pub Date : 2021-12-20 DOI: 10.3775/jie.100.288

Chaiyawat NA-LAMPANG, P. Assawasaengrat, Lamphung Phumjan, Woatthichai Narkrugsa, Pongsert Sriprom

{"title":"Optimizing Ammonia Adsorption Using Activated Carbon from Tamarind Pulp","authors":"Chaiyawat NA-LAMPANG, P. Assawasaengrat, Lamphung Phumjan, Woatthichai Narkrugsa, Pongsert Sriprom","doi":"10.3775/jie.100.288","DOIUrl":"https://doi.org/10.3775/jie.100.288","url":null,"abstract":"Ammonia is an essential waste from fish and shrimp which has an effect on fish and shrimp transportation for export. This study aimed to remove ammonia by Activated Carbon adsorption. The activated carbon was prepared from Tamarind pulp using different methods (NaOH, H 2 SO 4 , the hydrothermal technique and activated by H 2 SO 4 and H 2 SO 4 hydrothermal followed by NaOH). The Activated Carbon was characterized by and Iodine number and Fourier Transform Infrared Spectroscopy (FT-IR). The results showed that the iodine number of activated carbon prepared by the hydrothermal technique and activated by H 2 SO 4 have the highest surface area and porosity at 537 mg/g, and the functional group on activated carbon surface is carbonyl and sulfonyl group. For ammonia adsorption, the experiments were designed by Box-Behnken design at 3 factors 3 levels including Contact time (10, 95 and 180 min), Dosage of activated carbon (0.5, 1.25 and 2.0 g) and pH of the solution (2, 6.5 and 11). The concentration of ammonia was determined by UV-Visible spectrophotometer. The result showed that the main effects and the interaction effects were found significant effect on ammonia adsorption at confidence level of 95%. However, the interaction effects between contact time and activated carbon dosage was insignificant. Finally, the optimized results suggested that 48.32 ± 0.82% of ammonia concentration could be removed by activated carbon from tamarind pulp under the following conditions: pH of 11, a contact time of 95 min, and activated carbon dosage of 2 g/100 mL. The results are believed to be of importance to fish and shrimp transportation for reduced ammonia and other similar applications.","PeriodicalId":17318,"journal":{"name":"Journal of The Japan Institute of Energy","volume":"81 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89007051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Potential Analysis on Regional Demand Response by Air-conditioning Systems Combined with Gas Engine Cogeneration 空调系统与燃气发动机热电联产对区域需求响应的潜力分析

IF 0.2

Journal of The Japan Institute of Energy Pub Date : 2021-11-20 DOI: 10.3775/jie.100.263

R. Abe, Daisuke Tomofuji, T. Ikegami, A. Akisawa

{"title":"A Potential Analysis on Regional Demand Response by Air-conditioning Systems Combined with Gas Engine Cogeneration","authors":"R. Abe, Daisuke Tomofuji, T. Ikegami, A. Akisawa","doi":"10.3775/jie.100.263","DOIUrl":"https://doi.org/10.3775/jie.100.263","url":null,"abstract":"Recently, the introduction of renewable energy, especially Photovoltaic power generation (PV), has been increasing. On the other hand, it has been pointed out that there might be lack of adjustment capability in the grid system. As a countermeasure, Demand Response (DR) is expected to contribute to the adjustment of supply and demand. The objective of this study is to quantitatively evaluate the reduction of PV curtailment and energy efficiency when distributed energy resources respond to DR, which increases electricity demand when PV generates excess power. Specifically, when PV generates excess power, the cogeneration system is stopped and Air-Conditioning (A/C) heat sources is switched from fuel-based to power-based to increase power demand while maintaining the A/C function. Three types of commercial building were examined, which results were combined with Geographic Information System (GIS) database to estimate regional DR potential in Kyushu electric power tube area and Tohoku electric power tube area. The results imply that DR can utilize more than 40% of the estimated PV curtailment in both regions.","PeriodicalId":17318,"journal":{"name":"Journal of The Japan Institute of Energy","volume":"16 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2021-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88572698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Integrated Review of Communication Research Focusing on Information Formats: Toward Applications to Energy and Environmental Problems 以信息格式为中心的传播学研究综述:面向能源与环境问题的应用

IF 0.2

Journal of The Japan Institute of Energy Pub Date : 2021-11-20 DOI: 10.3775/jie.100.254

Yuuki Nakano, Hiroki Hondo

{"title":"An Integrated Review of Communication Research Focusing on Information Formats: Toward Applications to Energy and Environmental Problems","authors":"Yuuki Nakano, Hiroki Hondo","doi":"10.3775/jie.100.254","DOIUrl":"https://doi.org/10.3775/jie.100.254","url":null,"abstract":"The provision of information on energy and environmental problems has conventionally been based on the premise that people process information deliberatively and logically. However, it has been pointed out that the conventional methods have limitations, and it is necessary to turn attention to automatic and intuitive information processing. This paper focuses on three information formats, namely, narrative, vivid, and episodic information that can induce automatic and intuitive information processing and aims to examine their potential for use after a cross-sectional review of communication research related to the three formats. Although knowledge about each information format has been accumulated in different fields, it is important to have a bird’s eye view across the fields because there are many common points. The paper classifies the functions of these unconventional information into four categories: motivating processing, inducing simulated experiences, making topics personal, and evoking some emotions. It appears that these functions do not act independently but are interrelated and have different impacts on the receivers from the conventional information. Based on the cross-sectional review, this paper discusses how the four functions of the unconventional information can be utilized in energy communication.","PeriodicalId":17318,"journal":{"name":"Journal of The Japan Institute of Energy","volume":"26 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2021-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79300315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Preparation of Activated Carbons from Hydrolyzed Dipterocarpus alatus Leaves: Value Added Product from Biodiesel Production Waste 生物柴油生产废弃物的高附加值产品——芦松叶水解活性炭的制备

IF 0.2

Journal of The Japan Institute of Energy Pub Date : 2021-10-20 DOI: 10.3775/jie.100.219

Warangkana Khangwichian, Sudarat Pattamasewe, Atip Laungphairojana, Rattanaporn Leesing, A. J. Hunt, Yuvarat Ngernyen

{"title":"Preparation of Activated Carbons from Hydrolyzed Dipterocarpus alatus Leaves: Value Added Product from Biodiesel Production Waste","authors":"Warangkana Khangwichian, Sudarat Pattamasewe, Atip Laungphairojana, Rattanaporn Leesing, A. J. Hunt, Yuvarat Ngernyen","doi":"10.3775/jie.100.219","DOIUrl":"https://doi.org/10.3775/jie.100.219","url":null,"abstract":"A solid waste is generated in the production of biodiesel from the leaves of the Dipterocarpus alatus tree. This waste was hydrolyzed by oleaginous yeast and was employed as the precursor for preparing activated carbon by chemical activation. This work investigated the effect of types of chemical agent i.e. acid (H3PO4 and HNO3), base (KOH and NaOH) and chloride (ZnCl2 and FeCl2) on the porous properties of the resulting activated carbons. The dry leaves prior to hydrolysis were also used for comparison. The experiment was conducted as an activator to a biomass impregnation ratio of 1:2 for 1 h, followed by carbonization at 500 °C for 1 h. The raw materials and activated carbons were analysed using proximate analysis and the porous properties by using nitrogen adsorptiondesorption isotherms and thermogravimetric analysis (TGA). According to proximate analysis, fixed carbon contents of 9.27 and 16.25 dry wt% were found for the hydrolyzed material and dry leaves, respectively. This indicated that both materials served as good precursors to produce carbons. The results of porous properties show that the maximum surface area of 456 m2/g was produced using ZnCl2 activation. The prepared carbons from hydrolyzed leaves had surface areas comparable with carbons prepared from dry leaves for ZnCl2, H3PO4, HNO3 and NaOH activation. However, activation of hydrolyzed leaves with FeCl2 and KOH gave activated carbons with a lower surface area than dry leaves. Moreover, Dipterocarpus alatus leaf activated carbons had a higher surface area than several other literature examples of activated carbons. Therefore, hydrolyzed Dipterocarpus alatus leaves are a good precursor for the preparation of economical activated carbon.","PeriodicalId":17318,"journal":{"name":"Journal of The Japan Institute of Energy","volume":"64 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2021-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88927460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1