{"title":"Optimum Design Using Genetic Algorithm and Discrete-element Method: Application to Vibration Feeder Design for E-waste Recycling Automation","authors":"Jun Katagiri, S. Koyanaka, N. Hayashi, T. Ueda","doi":"10.4144/rpsj.69.133","DOIUrl":"https://doi.org/10.4144/rpsj.69.133","url":null,"abstract":"","PeriodicalId":20971,"journal":{"name":"Resources Processing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74225402","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}
{"title":"Development of the Process for Concentrating Valuable Metals and Removing Smelting Repellent Components from Waste PCBs by Combining Roasting, Selective Comminution, and Physical Separation","authors":"S. Owada","doi":"10.4144/rpsj.69.160","DOIUrl":"https://doi.org/10.4144/rpsj.69.160","url":null,"abstract":"","PeriodicalId":20971,"journal":{"name":"Resources Processing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91297380","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}
{"title":"Study on Arsenic Methyltransferase of Cellulomonas sp. K31 Expressed in Recombinant E. coli","authors":"M. Miyatake, H. Matsune, K. Shiomori","doi":"10.4144/rpsj.69.127","DOIUrl":"https://doi.org/10.4144/rpsj.69.127","url":null,"abstract":"","PeriodicalId":20971,"journal":{"name":"Resources Processing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85825501","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}
Kazuya MATSUMOTO, Rio FUJII, Yuki HATA, Mitsutoshi JIKEI
Rhenium (Re) is an industrially important metal because of its use in catalysts and additives in alloys. Due to the rarity and maldistribution of Re, stabilization of its price and supply by recycling is quite important. Therefore, it is necessary to develop Re recovery methods from acid leach solutions of spent catalysts and alloys. In this study, we present a new Re recovery method using primary amines from Re-containing hydrochloric acid (HCl). Re was successfully recovered from HCl solutions as precipitates using 4-hexylaniline (HexAni). Separation of platinum (Pt) and Re was achieved using 2-ethylhexylamine and HexAni as precipitants, respectively. We also succeeded in the selective and quantitative precipitation of Re using HexAni from the HCl solution containing Re, aluminum, vanadium, cobalt, and nickel. Precipitation recovery method of Re using HexAni from HCl solutions is a promising candidate for Re separation and recycling.
{"title":"第一級アミンを用いたPt，Al，V，Co，Niを含む塩酸溶液からのRe沈殿回収","authors":"Kazuya MATSUMOTO, Rio FUJII, Yuki HATA, Mitsutoshi JIKEI","doi":"10.4144/rpsj.70.5","DOIUrl":"https://doi.org/10.4144/rpsj.70.5","url":null,"abstract":"Rhenium (Re) is an industrially important metal because of its use in catalysts and additives in alloys. Due to the rarity and maldistribution of Re, stabilization of its price and supply by recycling is quite important. Therefore, it is necessary to develop Re recovery methods from acid leach solutions of spent catalysts and alloys. In this study, we present a new Re recovery method using primary amines from Re-containing hydrochloric acid (HCl). Re was successfully recovered from HCl solutions as precipitates using 4-hexylaniline (HexAni). Separation of platinum (Pt) and Re was achieved using 2-ethylhexylamine and HexAni as precipitants, respectively. We also succeeded in the selective and quantitative precipitation of Re using HexAni from the HCl solution containing Re, aluminum, vanadium, cobalt, and nickel. Precipitation recovery method of Re using HexAni from HCl solutions is a promising candidate for Re separation and recycling.","PeriodicalId":20971,"journal":{"name":"Resources Processing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135843305","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}
{"title":"Effect of Impurities on Spinel Precipitation Behavior in Molten Fayalite Slag","authors":"E. Shibata, A. Iizuka","doi":"10.4144/rpsj.69.153","DOIUrl":"https://doi.org/10.4144/rpsj.69.153","url":null,"abstract":"","PeriodicalId":20971,"journal":{"name":"Resources Processing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83020165","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}
Use of pulsed electric field and non-thermal plasmas generated using compact pulsed power generators has been widely expanded. In our research group, gas treatment such as decomposition of toxic and odor components and removal of aerosols using streamer discharges, and water treatment using discharges generated over water surface have been studied. The study of agricultural applications has been conducted for three purposes; to improve productivity of plants in pre-harvest applications, to keep freshness of fruits and vegetables in post-harvest applications, and to improve safety and productivity in food processing applications. In this article, some applications and development of pulsed power systems are introduced.
{"title":"Novel Environmental and Agricultural Applications of Discharge Plasma Generated Using Pulsed Power Technology","authors":"Katsuyuki TAKAHASHI, Koichi TAKAKI","doi":"10.4144/rpsj.70.11","DOIUrl":"https://doi.org/10.4144/rpsj.70.11","url":null,"abstract":"Use of pulsed electric field and non-thermal plasmas generated using compact pulsed power generators has been widely expanded. In our research group, gas treatment such as decomposition of toxic and odor components and removal of aerosols using streamer discharges, and water treatment using discharges generated over water surface have been studied. The study of agricultural applications has been conducted for three purposes; to improve productivity of plants in pre-harvest applications, to keep freshness of fruits and vegetables in post-harvest applications, and to improve safety and productivity in food processing applications. In this article, some applications and development of pulsed power systems are introduced.","PeriodicalId":20971,"journal":{"name":"Resources Processing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135843302","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}
Ion solvation extraction has been used as a separation techniques for gold (Au(III)) from various metal ions in a hydrochloric acid media. Dibutyl carbitol (DBC) has been used as the most popular solvent to extract Au(III), while no better solvent has been found for many years. In the present review, the results of recent investigations by the authors to find valid solvents for ion solvation extraction are summarized. Ethers and ketones are suitable in view of the high extractability for Au(III) as well as the good properties including chemical stability. Ethers and ketones which have a smaller side chains and relatively higher polarity showed higher extractability, however, polar solvents would leak into the aqueous phase. Therefore suitable solvents with moderate polarity are narrowed down based on the balance between high extractability and low aqueous solubility. As the polarity affects the extractability, the logP value (octanol/water partition coefficient) and the Hansen solubility parameter would be one of the indexes for the Au(III) extractability. Solvents used in industrial processes are required to have not only high extractability but also good properties such as a low aqueous solubility and a high flash point. The comprehensive research revealed the requirements for solvents to extract Au(III) based on ion solvation. Additionally, several potential solvents which might replace DBC were suggested.
{"title":"Au(III)への抽出能力と工業的な物性要件を両立する抽出溶媒の網羅的探索","authors":"Tatsuya OSHIMA","doi":"10.4144/rpsj.70.18","DOIUrl":"https://doi.org/10.4144/rpsj.70.18","url":null,"abstract":"Ion solvation extraction has been used as a separation techniques for gold (Au(III)) from various metal ions in a hydrochloric acid media. Dibutyl carbitol (DBC) has been used as the most popular solvent to extract Au(III), while no better solvent has been found for many years. In the present review, the results of recent investigations by the authors to find valid solvents for ion solvation extraction are summarized. Ethers and ketones are suitable in view of the high extractability for Au(III) as well as the good properties including chemical stability. Ethers and ketones which have a smaller side chains and relatively higher polarity showed higher extractability, however, polar solvents would leak into the aqueous phase. Therefore suitable solvents with moderate polarity are narrowed down based on the balance between high extractability and low aqueous solubility. As the polarity affects the extractability, the logP value (octanol/water partition coefficient) and the Hansen solubility parameter would be one of the indexes for the Au(III) extractability. Solvents used in industrial processes are required to have not only high extractability but also good properties such as a low aqueous solubility and a high flash point. The comprehensive research revealed the requirements for solvents to extract Au(III) based on ion solvation. Additionally, several potential solvents which might replace DBC were suggested.","PeriodicalId":20971,"journal":{"name":"Resources Processing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135843304","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}
{"title":"Evaluation of Soda-lime Glass Made Using Rice Husk as Glass Raw Material","authors":"Shiori Hori, Hashira Yamamoto","doi":"10.4144/rpsj.68.111","DOIUrl":"https://doi.org/10.4144/rpsj.68.111","url":null,"abstract":"","PeriodicalId":20971,"journal":{"name":"Resources Processing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90446991","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}
Yusuke Wada, Shinta Tsunemi, Mitsuaki Matsuoka, N. Murayama, Takehito Hiraki
{"title":"Development of Wet Treatment Process for Volume Reduction, Detoxification and Recycling of Low-grade Aluminum Dross","authors":"Yusuke Wada, Shinta Tsunemi, Mitsuaki Matsuoka, N. Murayama, Takehito Hiraki","doi":"10.4144/rpsj.69.63","DOIUrl":"https://doi.org/10.4144/rpsj.69.63","url":null,"abstract":"","PeriodicalId":20971,"journal":{"name":"Resources Processing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88180484","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}
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