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2021 3rd International Conference on E-Business and E-Commerce engineering, EBEE 2021

作者： Santoso, Budi Wahyu Purwanto, Widodo Sustainable Energy System and Policy Research Cluster Universitas Indonesia Depok16424 Indonesia Energy System Engineering Study Program Faculty of Engineering Universitas Indonesia Depok16424 Indonesia Department of Chemical Engineering Faculty of Engineering Universitas Indonesia Depok16424 Indonesia

ISBN: (纸本)9781450387392

Electric Vehicles (EVs) has important role in the successful of energy transition and reducing dependency from fossil fuels. Indonesia has started to develop EVs. One of the challenges is charging infrastructure development, includes business model and pricing scheme to achieve business feasibility. This study analyses business model and pricing mechanism for public charging station in Indonesia where a case study is conducted in Jabodetabek area. Monte-Carlo method is used to estimate charging demand based on current travel data and estimated EVs population in 2025. Cash flow method is used to calculate feasible price for public charging with Fixed and ToU price schemes. EVs home charging cost is also calculated to investigate competitiveness of public charging price for each business model. The results show that prices of public charging business model are competitive compared to cost of home charging. The proposed ToU price scheme for public charging is more competitive compared to fixed price scheme, and also effective to minimize grid load escalation of home charging during busy periods. Furthermore, daily cost of EV charging is calculated and compared to fuel cost of ICE vehicles. The result shows that EV charging cost is lower than fuel cost of ICE vehicles. © 2021 ACM.

关键词： Costs

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Analysis of Lpg Conversion to Induction Stove from the Financial and Consumer Behavior Perspectives in Households Grade R1

SSRN

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SSRN 2023年

作者： Hidayat, Muhammad Fauzi S.T. Firmansyah Hakam, Dzikri S.T. Pawenary, M.T. ElectricalEngineering Masters Study Program Faculty ofEngineering PLNInstitute of Technology Jakarta Indonesia Main Supervisor Master’s PrograminElectricalEngineering Faculty of Engineering Institute of PLN Technology Electrical Engineering Masters Study Program PLN Institute of Technology Jakarta Jakarta Indonesia

The Indonesian government is currently implementing an induction stove program to replace the use of LPG stoves. The 2021 report from the Central Statistics Agency (BPS) shows that LPG is used by 83.36% of the Indonesian population as a cooking fuel. Expenditure on LPG subsidies is influenced by international crude oil prices set through the Contract Price Aramco (CPA). Analysis shows that the gas prices set by the CPA have significantly increased in the past five years, becoming one of the factors contributing to the subsidy burden on the state budget (APBN). Therefore, it is necessary to find breakthrough solutions to minimize future APBN expenditures. The LPG to induction stove conversion program is expected to reduce subsidy burdens, improve energy efficiency, and influence consumer behavior in choosing more efficient cooking appliances. © 2023, The Authors. All rights reserved.

关键词： Costs

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Ultrasound-Assisted Polyphenols Extraction with Deep Eutectic Solvent and Ethanol-Based from Baccaurea Macrocarpa Pericarp and Kinetic Model

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SSRN 2024年

作者： Chaisawat, Thanakrit Wongprasopchai, Penpassorn Kaopaiboon, Sirinnippa Leema, Waehasan Kantakapun, Kanjana Somsiripan, Thotsaporn Program Kanarasdornbumroong Yala School Yala95000 Thailand Department of Chemical Engineering Faculty of Engineering Prince of Songkla University Songkhla Hat Yai90112 Thailand

In this study, the extraction of polyphenols from the Baccaurea macrocarpa pericarp using ultrasonic-assisted deep eutectic solvents (DES-UAE) of 15 different types and ethanol (EtOH-UAE) was investigated. It was found that choline chloride-lactic acid (1:2) is the optimal choice for polyphenol extraction due to its highest extraction efficiency. Subsequently, extraction parameters were optimized using the response surface methodology. The highest total polyphenolic content (TPC) for DES-UAE was achieved with a solvent concentration of 70.2%, an extraction time of 31.8 min., a temperature of 44.5 °C, and a solvent-solid ratio of 25.1 mL/g. For EtOH-UAE, the optimal solvent concentration was 81.1%, with an extraction time of 40.4 min, a temperature of 45.5 °C, and a solvent-solid ratio of 20.4 mL/g. Additionally, the second-order extraction kinetic model was found to best describe the extraction behavior for both DES-UAE and EtOH-UAE. To evaluate the eco-friendliness of the extraction solvents, the reusability and regeneration of both solvents were evaluated. In conclusion, this study suggests that DES-UAE is a viable, sustainable, and efficient technique for obtaining polyphenols from Baccaurea macrocarpa pericarp. DES-UAE also presents a promising tool for exploring the commercial feasibility of polyphenol extraction. © 2024, The Authors. All rights reserved.

关键词： Ethanol

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Bi nanoparticles/carbon nanosheet composite:A high-efficiency electrocatalyst for NO reduction to NH_(3)

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Nano Research 2022年第6期15卷 5032-5037页

作者： Qian Liu Yiting Lin Luchao Yue Jie Liang Longcheng Zhang Tingshuai Li Yongsong Luo Meiling Liu Jinmao You Abdulmohsen Ali Alshehri Qingquan Kong Xuping Sun Institute for Advanced Study Chengdu UniversityChengdu 610106China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China Key Laboratory of Chemical Biology&Traditional Chinese Medicine Research(Ministry of Education China)College of Chemistry and Chemical EngineeringHunan Normal UniversityChangsha 410081China College of Chemistry&Chemical Engineering Shaoxing UniversityShaoxing 312000China Chemistry Department Faculty of ScienceKing Abdulaziz UniversityP.O.Box 80203Jeddah 21589Saudi Arabia

Electrochemical reduction of NO offers us an attractive alternative to traditional selective catalytic reduction process for harmful NO removal and simultaneous NH_(3)production,but it requires efficient electrocatalyst to enable the NO reduction reaction with high ***,we report on the development of Bi nanoparticles/carbon nanosheet composite(Bi@C)for highly effective NO reduction electrocatalysis toward selective NH_(3)*** Bi@C catalyst attains an impressive NH_(3)yield of 1,592.5μg·h^(−1)·mgcat.^(−1)and a high Faradaic efficiency as high as 93%in 0.1 M Na_(2)SO_(4)***,it can be applied as efficient cathode materials for Zn–NO battery to reduce NO to NH_(3)with high electricity generation.

关键词： Bi nanoparticle carbon nanosheet NO reduction reaction NH_(3)synthesis electrocatalysis

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Drying characteristics and kinetics of rice flour biodegradable film under different drying temperatures

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Materials Today: Proceedings 2022年 63卷 S178-S182页

作者： Utari, Febiani Dwi Djaeni, Mohamad Purbasari, Aprilina Siqhny, Zulhaq Dahri Doctoral Program of Chemical Engineering Faculty of Engineering Universitas Diponegoro Semarang Indonesia Department of Chemical Engineering Faculty of Engineering Universitas Diponegoro Semarang Indonesia Faculty of Agriculture Technology Semarang University Semarang Indonesia

The production of biodegradable film from polysaccharides, starch-based material, can be potentially used to overcome the problem of non-degradable plastics. Rice flour can be an option to produce biodegradable film since it is a cheap material that produces from brewers rice. The drying process is the last step in biodegradable film production. The longer drying time and higher drying temperature increase the energy consumption. This study aimed to investigate the effect of air temperatures and biodegradable film thickness on the drying characteristics and kinetics of rice flour biodegradable film. The rice flour biodegradable film was dried in a food dehydrator at different temperatures, ranging from 30 to 70 °C. As a response, the moisture content of the biodegradable film was calculated every 10 min until 480 min. The moisture content was then converted into a dimensionless moisture ratio to predict the kinetics of drying. The drying kinetics showed that the constant rate did not display at all since the internal diffusion of moisture was dominant. The Deff value was ranged between 0.48 × 10−9 and 1.80 × 10−9 m2/min. Result of this study, the kinetic parameters can be used to predict the drying time ad different drying temperatures. © 2022

关键词： Moisture

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Investigation of the Base Oil Properties in Optimizing the Demulsification 16

Investigation of the Base Oil Properties in Optimizing the D...

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16th International engineering and Computing Research Conference, EURECA 2021

作者： Low, C.M. Ilia Anisa, A.N. Chua, B.L. Abdurahman, N.H. Chemical Engineering Program School of Computer Science and Engineering Taylor's University Lake Campus No. 1 Jalan Taylor's Subang Jaya47500 Malaysia Faculty of Chemical & Natural Resources Engineering Universiti Malaysia Pahang Lebuhraya Tun Razak Gambang Pahang26300 Malaysia

In this research, the correlation of the physical properties from different types of base oil- Group I and Group II base oils - to the demulsification process with variables such as mixing speed (500-1500 rpm), water content (20-80%) and volume of formulated surfactant (1 - 5 ml) were investigated. The water-in-oil emulsion was prepared using a formulated surfactant, and the demulsification was observed via a Bottle Test method. The optimization of demulsification was obtained from the correlation of the respective variables using the Central Composite Design (CCD) for Response Surface Methodology (RSM). Results showed that the Group I base oil emulsions have a lower viscosity and higher density than the Group II base oil, which has higher emulsion stability. The higher demulsification was observed by reducing the mixing speed, increasing the water content, and reducing the volume of the formulated surfactant for both groups of the base oil. The optimum of the water separation w obtained from the Group I base oil was 46.73% at 515 rpm, 76% water content, and 1 ml volume of the formulated surfactant. Meanwhile, 99.29% of water separation was found for the Group II base oil at 520 rpm, with 75% water content and 2 ml volume of the formulated surfactant. © Published under licence by IOP Publishing Ltd.

关键词： Demulsification

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Continuous Lithium-Ion Extraction From Seawater and Mine Water With a Fuel Cell System and Ceramic Membranes

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Energy & Environmental Materials 2024年第6期7卷 254-261页

作者： Cansu Kök Lei Wang Jean Gustavo A.Ruthes Antje Quade Matthew E.Suss Volker Presser INM–Leibniz Institute for New Materials Campus D2266123Saarbr¨uckenGermany Department of Materials Science&Engineering Saarland UniversityCampus D2266123Saarbr¨uckenGermany Leibniz Institute for Plasma Science and Technology Felix-Hausdorff-Straße 217489GreifswaldGermany Faculty of Mechanical Engineering Technion–Israel Institute of TechnologyHaifa3200003Israel Wolfson Department of Chemical Engineering Technion–Israel Institute of TechnologyHaifa3200003Israel Grand Technion Energy Program Technion–Israel Institute of TechnologyHaifa3200003Israel Saarene–Saarland Center for Energy Materials and Sustainability Campus C4266123Saarbr¨uckenGermany

The demand for electronic devices that utilize lithium is steadily increasing in this rapidly advancing technological *** high-purity lithium in an environmentally friendly way is challenging by using commercialized ***,we propose the first fuel cell system for continuous lithium-ion extraction using a lithium superionic conductor membrane and advanced *** fuel cell system for extracting lithium-ion has demonstrated a twofold increase in the selectivity of Li^(+)/Na^(+)while producing *** data show that the fuel cell with a titania-coated electrode achieves 95%lithium-ion purity while generating 10.23 Wh of energy per gram of *** investigation revealed that using atomic layer deposition improved the electrode's uniformity,stability,and electrocatalytic *** 2000 cycles determined by cyclic voltammetry,the electrode preserved its stability.

关键词： atomic layer deposition cation selectivity electrochemical lithium-ion extraction fuel cell

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BLUE H2 PERSPECTIVE IN ENERGY TRANSITION OF COLOMBIA 23

BLUE H2 PERSPECTIVE IN ENERGY TRANSITION OF COLOMBIA

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23rd World Hydrogen Energy Conference: Bridging Continents by H2, WHEC 2022

作者： Cardozo, Sara Domínguez Vanegas, Bernay Cifuentes Londoño, Felipe Bustamante Sánchez, Néstor Cobo, Martha Universidad de Antioquia UdeA Faculty of Engineering Calle 70 No. 52-21 Medellín Colombia Universidad de la Salle Bogotá Faculty of Engineering Chemical Engineering Program Carrera 2 No. 10-70 Bogotá Colombia Universidad de La Sabana Faculty of Engineering Campus Universitario Puente del Común Chía Colombia

ISBN: (纸本)9786250008430

Latin America is starting its transition towards sustainable energy alternatives. In particular, given its abundant natural resources and fossil fuel reserves, hydrogen (H2) could play a leading role in Colombia. This contribution presents an analysis of the potential of blue H2 in Colombia, considering it a possible promoter for the H2 economy. The study focuses on the natural resources available to produce blue H2 in the context of the recently launched H2 Road Map and Energy Plan to 2050. Results indicate that the production of low-emission blue H2 in Colombia, mainly from coal, besides allowing a more sustainable use of non-renewable resources would open the way to green H2, and could supply up to 10% of global demand of blue H2 by 2050. However, implementation of a clear public policy and a more detailed roadmap for the inclusion of blue H2 in the energy matrix is required for the establishment of a H2 economy in the country. © 2022 Proceedings of WHEC 2022 - 23rd World Hydrogen Energy Conference: Bridging Continents by H2. All rights reserved.

关键词： Proven reserves

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Effect of High-Flow Nasal Cannula on Capnogram Waveform for studying Non-Invasive Human Ventilation

Effect of High-Flow Nasal Cannula on Capnogram Waveform for ...

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Biomedical engineering Conference (NBEC), IEEE National

作者： Tjokorda Gde Tirta Nindhia Nursyasa Aqila Mohammed Julia Jais Jamaludin Pagupathi Devandran Nabiel Rafa Angel Bhaswara Thalitakum Hutajulu M.B. Malarvili Study Program of Mechanical Engineering Engineering Faculty Udayana University Jimbaran Bali Indonesia School of Biomedical and Health Science Engineering Universiti Teknologi Malaysia Johor Malaysia

This study is conducted to compare three different cannulas; all purpose nasal cannula with 2 prongs, nasal pressure cannula with 2 prongs and single port nasal cannula which are commonly used for capnography device. These cannulas or sometimes called as nasal prong is connected to the device via nose of subjects studied. This procedure is a part of respiratory study to monitor lungs condition and breathing pattern. This study involves 47 subject where the exhaled breath was recorded to make comparison and choose the most suitable and effective for capnography waveform analysis. Utilizing Statistical Package for the Social Sciences (SPSS) to find the normality of all the nasal cannula data based on capnogram waveform. The result from the analysis shows that the frequency distribution for type 1 nasal cannula which is also known as all-purpose nasal cannula had the feature values closer to the standard value. Our study proofs that all purpose nasal cannula sampling is the most suitable to capture exhaled breath for monitoring respiratory conditions.

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Smart Soft Materials with Multiscale Architecture and Dynamic Surface Topographies

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Accounts of Materials Research 2022年第11期3卷 1115-1126页

作者： Songshan Zeng Andrew T.Smith Kuangyu Shen Luyi Sun Polymer Program Institute of Materials Science and Department of Chemical&Biomolecular EngineeringUniversity of ConnecticutStorrsConnecticut 06269United StatesPresent Address:Macao Institute of Materials Science and Engineering(MIMSE)Zhuhai MUST Science and Technology Research InstituteFaculty of Innovation EngineeringMacao University of Science and TechnologyTaipa999078MacaoChina Polymer Program Institute of Materials Science and Department of Chemical&Biomolecular EngineeringUniversity of ConnecticutStorrsConnecticut 06269United States

CONSPECTUS:Smart soft materials have one or more characteristics that can be significantly altered in convertible fashions by external stimuli,such as light,moisture,mechanical force,temperature,electric/magnetic fields,pH,and so *** materials can lead to widespread application in multifunctional smart ***,various smart soft materials have been developed under the inspiration of the intriguing multiscale structures,adaptive mechanisms,and dynamic responses of natural life,with an aim to further design advanced material systems with novel,intriguing,and unprecedented properties.

关键词： Smart properties. Dynamic

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