Resources Processing最新文献_第3页

Synthesis of Hydrocalumite-like Compound from Blast Furnace Slag by Alkali Fusion using Waste Molten-Slag Heat, and Its Anion Removal Ability 废熔渣热碱熔法制备类氢钙石料及其除阴离子性能

Resources Processing Pub Date : 2020-01-01 DOI: 10.4144/RPSJ.67.86

T. Wajima

引用次数: 1

pH and Temperature Effects for Kinetics of Silica Polymerization toward Silica Scale Suppression pH和温度对二氧化硅聚合动力学的影响

Resources Processing Pub Date : 2020-01-01 DOI: 10.4144/rpsj.67.22

Shota Tajima, S. Fuchida, Tatsuya Kato, C. Tokoro

引用次数: 0

Separation Properties of Ni and Co with Extractant Impregnated-Activated Carbon 浸渍活性炭萃取剂分离镍、钴的性能

Resources Processing Pub Date : 2020-01-01 DOI: 10.4144/rpsj.67.5

K. Kanoya, K. Sugamoto, Y. Baba, Takanori Tsukazaki

引用次数: 0

Solvent Extraction Characteristics of Ruthenium from Chloride Solutions added Tin(II) with TOA and TOMAC TOA和TOMAC萃取加锡氯溶液中钌的特性

Resources Processing Pub Date : 2020-01-01 DOI: 10.4144/rpsj.66.133

Takeshi Tanishige, Koudai Nagano, Tasuma Suzuki, Masakazu Niinae

{"title":"Solvent Extraction Characteristics of Ruthenium from Chloride Solutions added Tin(II) with TOA and TOMAC","authors":"Takeshi Tanishige, Koudai Nagano, Tasuma Suzuki, Masakazu Niinae","doi":"10.4144/rpsj.66.133","DOIUrl":"https://doi.org/10.4144/rpsj.66.133","url":null,"abstract":"Chloride is one of the effective medium in which platinum group metals (PGMs) can be brought into a solution, thus chlorocomplexes are particularly important in the process chemistry of PGMs separations. Ru(III) chlorocomplexes are poorly extracted into organic solvents, which is due to the charge of the complex as well as those inert character in a solution, that is, formation of RuCl6–n(H2O)n (n = 1–6). The problem of solvent extraction of Ru from chloride solutions has not yet been solved and there is no effective industrial extractant for Ru. PGMs are traditionally separated from one another and the other metals by a complex series of selective precipitation techniques and distillation. These are generally inefficient in terms of the degree of separation achieved. Solvent extraction applied to refining process for PGMs offers several advantages over the traditional precipitation methods and distillation. Adding Sn(II) to a Rh(III) feed is a good procedure which can be used to make Rh react more easily to extraction. However, the effect of addition of Sn(II) on extraction of Ru(III) from chloride solution is not clarified. In the present study, the extraction of Ru from hydrochloric acid solutions with tri-n-octylamine (TOA) and trioctyl methyl ammonium chloride (TOMAC) were tested to clarify the effect of addition of Sn(II) on the extraction of Ru and stripping of Ru. The addition of Sn(II) was effective for the extraction of Ru, however, the stripping effeciency of Ru was not sufficient.","PeriodicalId":20971,"journal":{"name":"Resources Processing","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76484604","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

Study on Improvement of Filling Structure and Functionality of Silver Clay Sintering Body 改进银粘土烧结体充填结构及功能的研究

Resources Processing Pub Date : 2020-01-01 DOI: 10.4144/rpsj.66.128

Tomoyuki Tawara, H. Ohya, Akiyoshi Yatsugi, Kinya Hirabayashi, K. Oda

引用次数: 0

Particle Shape Control of Zn-Al Composite Oxides by Using Composite Hydroxides as a Precursor 以复合氢氧化物为前驱体控制Zn-Al复合氧化物的颗粒形状

Resources Processing Pub Date : 2020-01-01 DOI: 10.4144/RPSJ.67.73

Kohei Yamazaki, Mitsuaki Matsuoka, N. Murayama

引用次数: 0

Solvent Extraction of Iron(III) and Aluminum(III) and Separation from Rhodium(III) in Chloride Solutions Added Tin(II) with Tri-n-octylamine 三正辛胺加锡氯溶液中铁(III)和铝(III)的溶剂萃取及铑(III)的分离

Resources Processing Pub Date : 2019-01-01 DOI: 10.4144/RPSJ.66.9

A. Ishikawa, Takeshi Tanishige, Tasuma Suzuki, Masakazu Niinae

{"title":"Solvent Extraction of Iron(III) and Aluminum(III) and Separation from Rhodium(III) in Chloride Solutions Added Tin(II) with Tri-n-octylamine","authors":"A. Ishikawa, Takeshi Tanishige, Tasuma Suzuki, Masakazu Niinae","doi":"10.4144/RPSJ.66.9","DOIUrl":"https://doi.org/10.4144/RPSJ.66.9","url":null,"abstract":"Chloride is one of the effective medium in which platinum group metals (PGMs) can be brought into a solution, thus chlorocomplexes are particularly important in the process chemistry of PGMs separations. Rh(III) chlorocomplexes are poorly extracted into organic solvents, which is due to the charge of the complex as well as those inert character in a solution, that is, formation of RhCl 6–n (H 2 O) n(3–n)– (n = 1–6). The problem of solvent extraction of Rh from chloride solutions has not yet been solved and there is no effective industrial extractant for Rh. Adding Sn(II) to a Rh(III) feed is a good procedure which can be used to make Rh react more easily to extraction. However, the impurities such as Fe(III) and Al(III) are also leached together from spent automobile catalysts with chlo- ride solutions. Therefore, the investigation of effect of Sn(II) on extraction of Fe(III) and Al(III) as impurities is important for the extraction of Rh from chloride solutions added Sn(II). In the present study, the effect of Sn(II) on extraction of Fe(III) and Al(III) from chloride solutions contained Sn(II) with tri-n-octylamine (TOA) was investigated for the separation from Rh(III). Al(III) was not extracted with TOA, either with or without Sn(II). Meanwhile, the extraction of Fe(III) decreased with increase in the concentration of Sn(II) and the separation of Rh(III) from Fe(III) was possible by concentrating Rh(III) and Sn(II) in the organic pahse.","PeriodicalId":20971,"journal":{"name":"Resources Processing","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72996182","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

Fundamental Study on Production of γ-Aminobutyric Acid using Rice-bran Extract 米糠提取物生产γ-氨基丁酸的基础研究

Resources Processing Pub Date : 2019-01-01 DOI: 10.4144/rpsj.66.99

Hiroshi Takahashi, Tomoaki Kameyama, T. Shoji, Keisuke Chiba, H. Saito, Kou Amano, Katsuo Kyogoku, M. Okuda, K. Narita

引用次数: 0

Removal of Borate and Arsenite in Dilute Aqueous Solution with Various Mg-Fe Composite Oxides 不同镁铁复合氧化物去除稀水溶液中的硼酸盐和亚砷酸盐

Resources Processing Pub Date : 2019-01-01 DOI: 10.4144/RPSJ.66.29

Kohei Isoi, Fumika Shirasugi, Mitsuaki Matsuoka, J. Hayashi, N. Murayama

{"title":"Removal of Borate and Arsenite in Dilute Aqueous Solution with Various Mg-Fe Composite Oxides","authors":"Kohei Isoi, Fumika Shirasugi, Mitsuaki Matsuoka, J. Hayashi, N. Murayama","doi":"10.4144/RPSJ.66.29","DOIUrl":"https://doi.org/10.4144/RPSJ.66.29","url":null,"abstract":"Mg-Fe composite oxides with various mixing ratios were synthesized at different calcination temperature, to use them as anion removal agents. Crystal structure and specific surface area of the Mg-Fe composite oxides were evaluat - ed. The B and As(III) removal tests from dilute aqueous solution (initial concentration: 20 mg/dm 3 ) were conducted by using the Mg-Fe composite oxides. The predominant factors for removing them efficiently were considered. The Mg-Fe composite oxides having various specific surface area and different crystal structure are obtained, de pending on the chemical composition and the calcination temperature. When the mixing ratios are set to Mg:Fe = 1:1, 2:1 and 3:1, respectively, Mg-Fe type LDH is mainly formed as a precursor before calcination. Amorphous composite oxide is obtained by the calcination of Mg-Fe type LDH at 400°C. Approximately, the specific surface area of Mg-Fe composite oxides is increasing with an increase in the mixing ratio of Fe. On the other hand, the specific surface area of them also tends to decrease as the calcination temperature increases over 600°C. As the B removal mechanism from dilute aqueous solution, it is considered that (1) the formation of Mg(OH) 2 on the particle surface by the hydration of Mg-Fe composite oxides during removal operation and (2) the reconstruction of LDH structure by the partial hydration of Mg-Fe composite oxides are predominant. It is also found that (1) the hydration on the surface of MgO particles, (2) the reconstruction of LDH structure by the partial hydration, (3) the affinity with As(III) due to Fe and (4) the high specific surface area are effective for the As(III) removal.","PeriodicalId":20971,"journal":{"name":"Resources Processing","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80136972","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

Influence of Anatase Content in Sediment and NaCl Concentration in the Leaching Solution in the Leaching of Cd(II) from Artificially Contaminated Sediment 沉积物中锐钛矿含量和浸出液中NaCl浓度对人工污染沉积物中Cd(II)浸出的影响

Resources Processing Pub Date : 2019-01-01 DOI: 10.4144/rpsj.66.105

Tasuma Suzuki, Kisyo Nakase, Masakazu Niinae

{"title":"Influence of Anatase Content in Sediment and NaCl Concentration in the Leaching Solution in the Leaching of Cd(II) from Artificially Contaminated Sediment","authors":"Tasuma Suzuki, Kisyo Nakase, Masakazu Niinae","doi":"10.4144/rpsj.66.105","DOIUrl":"https://doi.org/10.4144/rpsj.66.105","url":null,"abstract":"The objective of this study was to evaluate the role of anatase impurities in sediments and the NaCl concentrations in the leaching solutions during the Cd(II) leaching from artificially contaminated sediments. It was found that the leaching of Cd(II) increased with increasing NaCl concentrations but this trend was less significant for the sediments containing higher amount of anatase. Based on the modeling analyses considering surface complexation and ion exchange reactions, the observed experimental results were explained by the difference between kaolinite and anatase in the Cd(II) adsorption mechanisms. At pH 5.9, which was the pH during the preparation of artificially contaminated sediments, kaolinite absorbs Cd(II) mainly via outer-sphere complex formation and that is why the absorbed Cd(II) was easily desorbed by the Na+ containing in the leaching solutions. On the other hand, the dominant Cd(II) adsorption mechanism for anatase was inner-sphere complex formation which was not hindered by the presence of NaCl. These experimental and modeling analyses results consistently showed that the content of anatase in sediments was one of the factors controlling the leaching level of Cd(II) from sediments when exposed to leaching solutions with high NaCl concentration.","PeriodicalId":20971,"journal":{"name":"Resources Processing","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85692239","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