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8th International Conference on Materials Science and Technology, MSAT 2014

作者： Looyrach, Jarawee Methacanon, Pawadee Gamonpilas, Chaiwut Lekpittaya, Porntip Lertworasirikul, Amornrat Interdisciplinary Graduate Program in Advanced and Sustainable Environmental Engineering Faculty of Engineering Kasetsart University Bangkok10900 Thailand National Metal and Materials Technology Center 114 Paholyothin Rd. Klong 1 Klong Luang Pathumthani12120 Thailand Department of Materials Engineering Faculty of Engineering Kasetsart University Bangkok10900 Thailand

ISBN: (纸本)9783038355526

For development of eco-friendly packaging foam from pomelo peel, physical and mechanical properties of the pomelo peel and effects of pomelo varieties, namely Kao-Nampueng, Thong-Dee, and Kao-Pan, on their properties were investigated. It was found that the pomelo variety showed somewhat significant effect on physical and mechanical of pomelo peel properties. Because of its thick peel with high moisture content (75-80%) and water activity (0.90-0.98), the peel weight accounted for almost half of the total fruit weight. Cell structure and pore size of the peel were examined using the environmental scanning electron microscope (ESEM). The result showed an open cell foam structure with pore size of approximately 151±31 μm. The pore size was more open and large towards the outer surface. Uniaxial compression tests on pomelo peel samples with and without flavedo showed good reproducible stress-strain curves despite its biological variation. Young's moduli of both samples were calculated to be 200-300 kPa and 110-210 kPa, respectively. Moreover, the most important property of packaging foam is the ability to absorb energy during impact which can be characterised through the measurement of the onset strain of densification. It was found that the strain values at the maximum energy absorption efficiency (Εcd) of peel samples with and without flavedo for all studied pomelo varieties were comparable and were approximately in the range of 60-65%. These preliminary results indicate very promising mechanical properties of pomelo peel as eco-friendly packaging foam although further modifications are required to improve their physical and shelf-stability properties. © (2015).

关键词： Scanning electron microscopy

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Factors affecting the distribution of microplastics in soils of China

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Frontiers of environmental Science & engineering 2023年第9期17卷 157-176页

作者： Yin Liu Matthias CRillig Quan Liu Jingjing Huang Muhammad Amjad Khan Xiaohui Li Qin Liu Qingqing Wang Xuesong Su Linyi Lin Yang Bai Genmao Guo Yi Huang Yong Sik Ok Shan Hu Junfeng Wang Honggang Ni Qing Huang Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province/Center for Eco-Environmental Restoration Engineering of Hainan Province/State Key Laboratory of Marine Resource Utilization in South China Sea/College of Ecology and Environment Hainan UniversityHaikou 570228China Institute of Biology Ecology of PlantsFreie Universität Berlin/Berlin Brandenburg Institute of Advanced Biodiversity Research(BBIB)Berlin 14195Germany Hainan Inspection and Detection Center for Modern Agriculture Haikou 570100China Institute of Environment and Sustainable Development in Agriculture Chinese Academy of Agricultural SciencesBeijing 100081China China College of Management and Economics Tianjin UniversityTianjin 300072China College of Environmental Sciences and Engineering Peking UniversityBeijing 100871China Korea Biochar Research Center APRU Sustainable Waste Management Program&Division of Environmental Science and Ecological EngineeringKorea UniversitySeoul 02841Republic of Korea School of Urban Planning and Design Peking University Shenzhen Graduate SchoolShenzhen 518055China

Microplastics(MPs)are found worldwide in high abundance,posing a potential threat to *** the ubiquity of MPs in the environment,very little is known about the regional distribution of MPs and underlying factors affecting this distribution in the field,which likely include human activity,but also features of the environment ***,out of a total of 1157 datapoints investigated in 53 Chinese studies,9.68%datapoints were removed as outliers in the heterogeneity *** review revealed that the abundance of MPs was highly *** addition,microplastic(MP)distribution maps based on China demonstrated that the highest abundance of MPs tended to occur near large rivers and central land affected by the intersection of two *** model-fitting and previous studies showed that MP abundance in China was correlated with longitude,agricultural mulching film usage per capita,temperature,and ***,due to the heterogeneity of MPs and the low matching degree between the current environmental data and the sampling points,this pattern was not as evident as reported in any single *** affecting the distribution of MPs can not be captured by linear relationships alone,and systematic selection of suitable environmental factors and further model optimization are needed to explore the cause of MP pollution in ***,this review revealed an uneven distribution of MPs and serves as a reference for model prediction to assess and control plastic pollution in natural soil environments.

关键词： Microplastic distribution Microplastic heterogeneity Effecting factors Agriculture Socio-economic factors

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Life Cycle Assessment of Natural Fiber-Based Insulator Corrugated Paper Box to Identify Eco-Design Strategies

Life Cycle Assessment of Natural Fiber-Based Insulator Corru...

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2015 International Conference on environmental Science and Technology

作者： Suchada Dedpakdee Rattanawan Mungkung Ratchatee Techapiesancharoenkit Interdisciplinary Graduate Program in Advanced and Sustainable Environmental Engineering (International Program) Faculty of Engineering Kasetsart University Department of Environmental Technology and Management Faculty of Environment Kasetsart University Centre of Excellence on enV ironmental strategy for GREEN business (VGREEN) Faculty of EnvironmentKasetsart University Department of Materials Engineering Faculty of Engineering Kasetsart University

This study explored the potential use of natural fibers as alternative insulate lining in a corrugated paper box for fresh asparagus transportation packaging. Life Cycle Assessment(LCA) was used to evaluate the potential environmental impacts of a natural fiber-based insulation prototype that could help identify the eco-design strategies. The environmental performances of the prototype were evaluated and compared with a corrugated paper box, with forced air cooling before shipment, and a corrugated paper box lined with polyethylene foam and filled with dry ice. The system boundary was the whole life cycle of products. The functional unit on which the comparison was defined as a corrugated paper box(1,100 cm×1,100 cm×1,000 cm) with a load of 300 kg of fresh asparagus for the transportation to a specific oversea destination by air fleet. Data collection was from primary data(i.e. natural fiber-based insulator production) and the background data were sourced from the national life cycle inventory databases(i.e. electricity, water, polyethylene foam), supplemented by international databases(i.e. chemical production, transportation) and literature review(i.e. corrugated paper box production). The LCA results indicated that, for the natural fiber-based insulation production, the highest impact on global warming was associated with the use of electricity by the fiber-drying oven;moreover, the use of sodium hydroxide, for the fiber extraction, caused a significant impact on eco-toxicity. The strategies for eco-design to improve the environmental performances of the natural-fiber insulation could be achieved by avoiding the chemical-extraction process and increasing the energy efficiency of the fiber-drying process. The alternative application of mechanically-steam explosion of natural fibers, instead of the chemical extraction method, could potentially reduce the environmental impact on freshwater eutrophication 83%, human toxicity 74% and terrestrial eco-toxicity 76%. By u

关键词： Corrugated box eco-design insulator life cycle assessment natural fiber

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The Carbon and Water Footprint Assessment of Cassava-based Bioethanol Production in Thailand

The Carbon and Water Footprint Assessment of Cassava-based B...

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International Conference on Biological, Environment and Food engineering (BEFE-2015, Singapore)

作者： Tapanee Namchancharoen Seksan Papong Pomthong Malakul Thumrongrut Mungcharoen Interdisciplinary graduate programs in Advanced and Sustainable Environmental Engineering Thailand Advanced Institute of Science and Technology(TAIST-Tokyo tech)Kasetsart University National Metal and Materials Technology Center The Petroleum and Petrochemical College Chulalongkorn University Faculty of Engineering Kasetsart University

This study aims to evaluate carbon footprint（CF） and water footprint（WF） of bioethanol production from cassava in *** of the study is "cradle-to-gate" approach by evaluating all stages of product's life cycle including feedstock cultivation,transportation,feedstock processing,ethanol conversion,and on-site waste *** study has three present commercial cassava-based bioethanol case studies used cassava chip as feedstock from different region of Thailand and used different fuel in steam production such as fuel oil,biomass,and *** three case studies used electricity from national grid and have wastewater treatment *** emissions of bioethanol production from cassava of case study 1,2,and 3 are 0.562,1.058,and 0.734 kg-CO-eq/1-ethanol,*** of bioethanol from cassava of case study 1,2,and 3 are 1.549,1.532,and 1.653 m/l-ethanol,respectively.

关键词： Carbon footprint Water footprint Cassava Ethanol

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Comparative Study of Different Biogas Recovery Systems by Comparing Greenhouse Gas Emissions

Comparative Study of Different Biogas Recovery Systems by Co...

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International Conference on Biological, Environment and Food engineering (BEFE-2015, Singapore)

作者： Hunsa Rittipikul Seksan Papong Pomthong Malakul Penjit Srinophakun Interdisciplinary graduate programs in Advanced and Sustainable Environmental Engineering Thailand Advanced Institute of Science and Technology(TAIST-Tokyo tech)Kasetsart University National Metal and Materials Technology Center The Petroleum and Petrochemical College Chulalongkorn University Department of Chemical Engineering Faculty of EngineeringKasetsart University

The effluent from biodiesel production generally contains organic content treated by self-remediation in open lagoon and releasing greenhouse gases(GHG).In order to guarantee environmental-friendly characteristics of palm biodiesel,this study assesses the GHG emissions through palm oil biodiesel production emphasized on difference of biogas recovery *** boundary of the study is cradle-to-gate approach including the oil palm plantation,crude palm oil(CPO) production,biodiesel production,and related transport *** result shows that,in the best case scenario,25.28%GHG emission decreases from the worst case scenario *** on crude palm oil(CPO) production,the biogas recovery system in milling can reduce GHG emissions up to 50.43%.CPO production plays an important role in GHG reduction,therefore,it is suggested that the biogas literally lessen GHG emission and is recommended for improvement of environmental performance.

关键词： Biodiesel Biogas recovery Greenhouse gas Palm oil mill effluent Wastewater

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Tailoring the Surface Curvature of the Supporting Carbon to Tune the d-Band Center of Fe−N−C Single-Atom Catalysts for Zinc-Urea-Air Batteries

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Angewandte Chemie 2025年

作者： Assoc. Prof. Qichen Wang Dr. Lulu Lyu Xu Hu Wenqi Fan Dr. Chunyan Shang Qirui Huang Prof. Zhipeng Li Prof. Zhen Zhou Prof. Yong-Mook Kang Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics Northwestern Polytechnical University Xi'an 710072 P. R. China Department of Materials Science and Engineering Korea University Seoul 02841 Republic of Korea School of Materials Science and Engineering Institute of New Energy Material Chemistry Renewable Energy Conversion and Storage Center (ReCast) Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) Nankai University Tianjin 300350 China College of Chemistry and Environmental Engineering Shenzhen University Shenzhen 518060 P. R. China Interdisciplinary Research Center for Sustainable Energy Science and Engineering (IRC4SE2) School of Chemical Engineering Zhengzhou University Zhengzhou 450001 Henan China KU-KIST Graduate School of Converging Science and Technology Korea University Seoul 02841 Republic of Korea Department of Battery-Smart Factory Korea University Seoul 02841 Republic of Korea

The catalytic activities of the Fe−N−C single-atom catalysts (SACs) are associated with the varying atomic interactions through its characteristic coordination geometry. Yet, modulation of the surface curvature of carbon acting as a supporting body has not been investigated. Herein, we report the superior catalytic activity for the oxygen reduction reaction (ORR) and enhanced performance for urea oxidation reaction (UOR) of single Fe atoms anchored on a highly curved N-doped carbon dodecahedron with concave morphology (Fe SA/NhcC). Theoretical calculations and in situ spectroscopy disclose that the curvature of the carbon support helps to shorten the bond length of Fe−N, spatially redistributing the charges around the Fe and thereby lowering the d-band center toward optimal adsorption for oxygenated species. The Fe SA/NhcC catalyst displays an ultrahigh half-wave potential of 0.926 V for ORR and a small potential difference of 0.686 V for bifunctional ORR/UOR. A rechargeable Zn-urea-air battery with the Fe SA/NhcC cathode displays robust discharge durability, excellent cycling lifespan and higher energy efficiency compared to conventional Zn-air batteries. This work provides new insight into promoting the catalytic activity of SACs through varying the surface curvature of the supporting carbon, tailoring geometric configuration and electronic states of SACs.

关键词： Zinc-urea-air battery strain engineering curved Fe−N4 site oxygen reduction reaction urea oxidation reaction

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2-[(Hydroxymethyl)amino]ethanol in water as a preservative: Study of formaldehyde released by Taguchi's method 5

2-[(Hydroxymethyl)amino]ethanol in water as a preservative: ...

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5th International Conference on Chemical and Bioprocess engineering, ICCBPE 2015

作者： Wisessirikul, W. Loykulnant, S. Montha, S. Fhulua, T. Prapainainar, P. Interdisciplinary Graduate Program in Advanced and Sustainable Environmental Engineering Thailand Advanced Institute of Science and Technology Tokyo Institute of Technology Kasetsart University Bangkok10900 Thailand Natural Rubber Focus Unit National Metal and Materials Technology Center NSTDA 111 Paholyothin Rd. Klong 1 Klong Luang Pathumthani12120 Thailand Environment Research Unit National Metal and Materials Technology Center NSTDA 111 Paholyothin Rd. Klong 1 Klong Luang Pathumthani12120 Thailand National Center of Excellence for Petroleum Petrochemicals and Advance Materials Department of Chemical Engineering Faculty of Engineering Kasetsart University Thailand Center of Excellence of Nanotechnology Kasetsart University Thailand

This research studied the quantity of free formaldehyde released from 2- [(hydroxymethyl)amino]ethanol (HAE) in DI water and natural rubber latex mixture using high-performance liquid chromatography (HPLC) technique. The quantity of formaldehyde retained in the solution was cross-checked by using titration technique. The investigated factors were the concentration of preservative (HAE), pH, and temperature. Taguchi's method was used to design the experiments. The number of experiments was reduced to 16 experiments from all possible experiments by orthogonal arrays (3 factors and 4 levels in each factor). Minitab program was used as a tool for statistical calculation and for finding the suitable condition for the preservative system. HPLC studies showed that higher temperature and higher concentration of the preservative influence the amount of formaldehyde released. It was found that conditions at which formaldehyde was released in the lowest amount were 1.6%w/v HAE, 4 to 40 °C, and the original pH. Nevertheless, the pH value of NR latex should be more than 10 (the suitable pH value was found to be 13). This preservative can be used to replace current preservative systems and can maintain the quality of latex for long-term storage. Use of the proposed preservative system was also shown to have reduced impact on the toxicity of the environment. © Published under licence by IOP Publishing Ltd.

关键词： Formaldehyde

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Effect of Soaking Period on High CaO Fly Ash Properties for Utilization in Cement Application

Effect of Soaking Period on High CaO Fly Ash Properties for ...

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International Conference on Biological, Environment and Food engineering (BEFE-2015, Singapore)

作者： Phattarathicha Tepsri Patana Anurakpongsatorn Angkana Chumphu Sorachon Yoriya Interdisciplinary graduate programs in Advanced and Sustainable Environmental Engineering Thailand Advanced Institute of Science and Technology and Tokyo Institute of Technology (TAIST-Tokyo tech)Kasetsart University Department of Environmental Technology and Management Faculty of EnvironmentKasetsart University Ceramics Technology Research Unit National Metal and Materials Technology CenterNSTDA

This work reports a study of fly ash with CaO higher20%,emphasizing on the effect of soaking condition on fly ash *** of soaked fly ashes after drying have been characterized in comparison to those of the fresh unsoaked fly *** properties include physical,chemical,morphological and mineralogical properties,and specification in portland-cement *** of the soaked fly ash remains unchanged,the spherical *** of both soaked and unsoaked fly ashes have been studied,consisting of anhydrite,quartz,magnetite,hematite,lime,portlandite,and *** strength activity indices at 7 and 28 days of dried fly ashes after soaking are higher than 75%of cement mortar and higher than that of the fresh fly *** achieved result has demonstrated important evidence that fly ash after experiencing wet condition and undergoing a particular recovery process could be reused and utilized in their application of cement.

关键词： High CaO fly ash Unsoaked fly ash Soaked fly ash Properties Strength activity index

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A Comparison Study of Photocatalytic Activity of TiO2 and ZnO on the Degradation of Real Batik Wastewater

A Comparison Study of Photocatalytic Activity of TiO2 and Zn...

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International Conference on Biological, Environment and Food engineering (BEFE-2015, Singapore)

作者： Phutthamon Chantes Chalor Jarusutthirak Supamas Danwittayakul Interdisciplinary graduate programs in Advanced and Sustainable Environmental Engineering Thailand Advanced Institute of Science and Technology and Tokyo Institute of Technology (TAIST-Tokyo tech) TechnologyKasetsart University Department of Environmental Technology and Management Faculty of EnvironmentKasetsart University Environment Research Unit National Metal and Materials Technology Center(MTEC)

Dye wastewater from textile industries are reported to be a major river *** available photocatalysts,TiO,ZnO in micrometer size and ZnO in nanometer size were selected to use for removing dye contaminants in *** degradation of real Batik wastewater under UV light irradiation was monitored for up to 2 hours *** was found that TiO having a better optical absorption spectrum shows a similar degradation efficiency as compared with the micron sized ZnO,attributed to the surface defects of ZnO,while nanosized ZnO show a slightly lower degradation efficiency due to it accompanied with high percentage contaminants（20%）.To ensure the robustness upon using the photocatalysts in a high pH level wastewater（pH 11.5）,we monitored the stability of the catalysts for 5 hours and the catalysts were found to be stable over the observation period.

关键词： Photocatalysis Textile wastewater treatment Degradation efficiency

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Life Cycle Assessment of Palm Empty Fruit Bunch Utilization for Power Plants in Thailand

Life Cycle Assessment of Palm Empty Fruit Bunch Utilization ...

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International Conference on Biological, Environment and Food engineering (BEFE-2015, Singapore)

作者： Sarunya Chanlongphitak Seksan Papong Pomthong Malakul Thumrongrut Mungcharoen interdisciplinary graduate programs in Advanced and Sustainable Environmental Engineering Thailand Advanced Institute of Science and Technology and Tokyo Institute of Technology (TAIST-Tokyo tech) TechnologyKasetsart University Life Cycle Assessment Laboratory of National Metal and Materials Technology Center(MTEC) Petroleum and Petrochemical College Chulalongkorn University Department of Chemical Engineering Faculty of EngineeringKasetsart University

This study aims to evaluate the environmental impacts of electricity production using palm empty fruit bunch as fuel in southern Thailand based on life cycle *** system boundary includes the oil palm plantation and harvesting,crude palm oil(CPO)production,electricity production,and all transportation activities throughout its life cycle from "cradle-to-gate".Inventory data were collected from palm oil mills and biomass power plants located in Suratthani province,south of *** software with CML baseline 2000 method used to evaluate the relevant environmental impacts such as global warming potential(GWP),acidification potential(AP),eutrophication potential(EP),and human toxicity potential(HTP) based on a functional unit of 1 MWh of *** results found that the electricity production stage has highest environmental impact followed by oil palm plantation,CPO extraction and transportation except *** EP impact category,oil palm plantation has highest impact more than electricity generation,CPO extraction,and transportation,respective.

关键词： Life Cycle Assessment Palm Empty Fruit Bunch Power Generation

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