Proceeding of Science and Technology最新文献

Optimization of P25/CaTiO3nanorod Composite Photocatalysts for High Organic Matter Degradation Performance P25/ catio3纳米棒复合光催化剂的高有机物降解性能优化

Proceeding of Science and Technology Pub Date : 2023-09-30 DOI: 10.21625/resourceedings.v3i2.978

Tomoki Tamarua, Trang Nakamoto, Kozo Taguchi

{"title":"Optimization of P25/CaTiO3nanorod Composite Photocatalysts for High Organic Matter Degradation Performance","authors":"Tomoki Tamarua, Trang Nakamoto, Kozo Taguchi","doi":"10.21625/resourceedings.v3i2.978","DOIUrl":"https://doi.org/10.21625/resourceedings.v3i2.978","url":null,"abstract":"Wastewater is discharged into rivers and oceans without any treatment, causing significant damage to animal health and destroying ecosystems. Semiconductor photocatalysts are attracting attention as an effective means for solving this problem. Among them, titanium-based perovskite semiconductors are expected to be the next-generation photocatalysts because of their wide range of properties, including chemical and optical stability. CaTiO3, in particular, has attracted attention because of its excellent corrosion resistance, low cost, and ease of material synthesis. In this study, CaTiO3 nanorods (CaTiO3NR) were prepared by hydrothermal synthesis. The photocatalytic activity was improved by forming a heterostructure between TiO2 particles (P25) and CaTiO3NR and by optimizing the mass ratio of P25 to CaTiO3NR. Methylene blue solution was used as a pollutant model to evaluate the degradation performance of photocatalysts under UV irradiation. The results showed that controlling the mass ratio of P25 /CaTiO3NR can significantly improve the photocatalytic performance and has better degradation than P25/CaTiO3nanocuboids composite photocatalysts. The highest photocatalytic performance was achieved by the P25 /CaTiO3NR=3:1 composite photocatalyst, which had about 60% more decomposition performance compared to P25.","PeriodicalId":493833,"journal":{"name":"Proceeding of Science and Technology","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136343577","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

Soil Microbial Fuel Cell with Hydrophilic Treated Buckypaper Anodes 土壤微生物燃料电池与亲水性处理巴克纸阳极

Proceeding of Science and Technology Pub Date : 2023-09-30 DOI: 10.21625/resourceedings.v3i2.998

Soichiro Hirose, Trang Nakamoto, Kozo Taguchi

{"title":"Soil Microbial Fuel Cell with Hydrophilic Treated Buckypaper Anodes","authors":"Soichiro Hirose, Trang Nakamoto, Kozo Taguchi","doi":"10.21625/resourceedings.v3i2.998","DOIUrl":"https://doi.org/10.21625/resourceedings.v3i2.998","url":null,"abstract":"Fossil fuels, the primary source of energy supply in modern society, are both unsustainable and damaging to the environment. The most cost-effective way to reduce the use of fossil fuels is to switch to renewable energy sources. Soil microbial fuel cells (SMFC) are a green energy production method because they use electron-generating bacteria in the soil to obtain electrical energy from organic matter. One way to improve the output of SMFCs is to increase the specific surface area of the anodes. The larger specific surface area allows more electrons to be received from the bacteria. In this study, bucky paper (BP) was utilized as the anode of SMFC. BP is a freestanding film fabricated from multi-walled carbon nanotubes (CNT) by vacuum filtration method. CNT has a high specific surface area and electrical conductivity. BP is also considered to be mechanically stable in soil due to its CNT network structure. However, the surface of the BP is hydrophobic. In SMFCs, the hydrophobic surface of the anode is a fatal disadvantage in terms of the affinity of microorganisms. Thus, heat treatment and UV ozone treatment were employed to make the surface of BP hydrophilic, and their output in SMFCs was investigated. As a result, SMFCs using UV-ozone-treated BPs as anodes produced the highest power density of 28.8 μW/cm². Also, unlike thermal treatment, UV ozone treatment did not damage the CNT structure. Hence, in this experiment, the output power of the SMFC was stable for at least 140 hours.","PeriodicalId":493833,"journal":{"name":"Proceeding of Science and Technology","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136343579","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

Chemical Oxygen Demand Sensor Based on Microbial Fuel Cell Using Low-Cost Electrodes Fabricated from Waste Rice Husks 基于低成本废稻壳电极微生物燃料电池的化学需氧量传感器

Proceeding of Science and Technology Pub Date : 2023-09-30 DOI: 10.21625/resourceedings.v3i2.979

Soichiro Hirose, Trang Nakamoto, Kozo Taguchi

{"title":"Chemical Oxygen Demand Sensor Based on Microbial Fuel Cell Using Low-Cost Electrodes Fabricated from Waste Rice Husks","authors":"Soichiro Hirose, Trang Nakamoto, Kozo Taguchi","doi":"10.21625/resourceedings.v3i2.979","DOIUrl":"https://doi.org/10.21625/resourceedings.v3i2.979","url":null,"abstract":"Environmental pollution is one of the problems that humankind must solve for a sustainable future. Monitoring of Chemical Oxygen Demand (COD) is an important indicator for monitoring the status of organic pollution in water. However, conventional methods for monitoring COD face high costs and complicated design issues. In this study, the use of microbial fuel cells (MFC) composed of low-cost and easy-to-fabricate electrodes using smoked charcoal from rice husks and Japanese ink was investigated for use in COD sensors. Rice husks are an industrial waste product. Therefore, they can be used at a low cost, and using them can help solve the waste problem, which is one of the causes of environmental pollution. With these materials, the electrodes were fabricated for the cost of $0.022/cm3. In addition, floating MFC was used for the sake of sensing COD in rivers, waterways, and lakes. The high physical stability of the block-shaped electrode used in this study allowed a biofilm to form on the anode surface by inserting the anode into the soil. The block-shaped electrodes were physically stable in solution. The results showed that there was a correlation between COD concentration (30~150 mg/L) and MFC voltage for more than four months. Block-shaped electrodes fabricated with rice husk smoked charcoal and Japanese ink would be a promising electrode for MFC to monitor COD in solution in real-time.","PeriodicalId":493833,"journal":{"name":"Proceeding of Science and Technology","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136343573","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

Proposal for a Binder Blended with PTFE and Japanese Sumi Ink for the Cathode in Microbial Fuel Cells 微生物燃料电池阴极用聚四氟乙烯与日本Sumi油墨混合粘结剂的研究

Proceeding of Science and Technology Pub Date : 2023-09-30 DOI: 10.21625/resourceedings.v3i2.1002

Soichiro Hirose, Yugo Nishio, Trang Nakamoto, Kozo Taguchi

引用次数: 0

Design Solutions and Architectural Treatments to Achieve Thermal Comfort in the Interior Space of the Building 在建筑内部空间实现热舒适的设计方案和建筑处理

Proceeding of Science and Technology Pub Date : 2023-09-30 DOI: 10.21625/resourceedings.v3i2.977

Engy ElHussieny

{"title":"Design Solutions and Architectural Treatments to Achieve Thermal Comfort in the Interior Space of the Building","authors":"Engy ElHussieny","doi":"10.21625/resourceedings.v3i2.977","DOIUrl":"https://doi.org/10.21625/resourceedings.v3i2.977","url":null,"abstract":"All countries of the world are moving to take measures to develop solutions to confront climate change, build resilience, and adapt to the inevitable effects of climate change, the growing energy crisis, and record concentrations of greenhouse gases... Here comes the role of architectural solutions, through successful designs using raw materials appropriate to the climate. It is hot in the Arab countries, especially the countries located in the desert climate region, which requires reusing some traditional architectural concepts with more modern designs, relying on technology, and using new methods of thermal insulation in order to make the building and the interior space more comfortable for the user by achieving thermal comfort. The research aims to study the architectural and design concepts and solutions in hot areas, humidify and renew the indoor air, and direct solar energy in a way that suits the nature of the climate and location in hot desert areas and encourage the concept of sustainable, environmentally friendly architecture, to rationalize energy consumption as one of the pillars on which the success of sustainable development in any country depends. Community and selection of advanced technology in a way that does not negatively affect the interior space.","PeriodicalId":493833,"journal":{"name":"Proceeding of Science and Technology","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136343723","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