{"title":"PREPARATION OF SILICON-SUBSTITUTED BETA-TRICALCIUM PHOSPHATE BY THE POLYMERIZED COMPLEX METHOD","authors":"K. Hashimoto, Takatoshi Imai, H. Shibata","doi":"10.3363/prb.39.14","DOIUrl":"https://doi.org/10.3363/prb.39.14","url":null,"abstract":"","PeriodicalId":20022,"journal":{"name":"Phosphorus Research Bulletin","volume":"72 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76303057","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}
In the present study, we developed a technology for concentrating and recovering phosphorus from slag-like phosphorus-containing unused resources and applied it to slag discharged during the latest steelmaking process, that is, double-slag refining process (DRP). The technology we developed consists of the following four processes: Process (1) is the initial acid elution; Process (2) involves alkali precipitation; Process (3) is the second acid elution; and, Process (4) utilizes ion-exchange. In Process (1), the addition of DPR slag to 0.5 M of a nitric acid solution for 24 min resulted in sufficient phosphorus dissolution. In Process (2), ammonia was added to the dissolved solution, and phosphorus was precipitated with high efficiency. The timing of the addition of ammonia significantly influenced the removal of silicon and iron, which would have been inconvenient to accomplish in subsequent processes. In Process (3), the precipitation obtained in Process (2) was re-dissolved in a nitric acid solution. The dissolution of phosphorus together with other elements progressed sufficiently, and we confirmed that silicon could be completely separated as silica by using high-concentration nitric acid at this stage. The fact that silicon could be removed during Process (3) was an important finding, since silicon could not have been separated in the Process (4). In Process (4), by passing the phosphorus-containing solution obtained in Process (3) through an ion exchange resin, elements other than phosphorus and silicon could be removed, which confirms that the range of applications for this technology could be expanded.
{"title":"KEY FACTORS FOR THE SEPARATION OF SILICON AND IRON DURING PHOSPHORUS RECOVERY FROM SLAG DISCHARGED FROM THE DOUBLE-SLAG REFINING PROCESS","authors":"Shigeru Sugiyama, Takumi Hashimoto, Naohiro Shimoda, Takaiku Yamamoto, Hiromu Yano, Hisahiro Matsunaga, Yoshiyuki Nakamura","doi":"10.3363/prb.39.23","DOIUrl":"https://doi.org/10.3363/prb.39.23","url":null,"abstract":"In the present study, we developed a technology for concentrating and recovering phosphorus from slag-like phosphorus-containing unused resources and applied it to slag discharged during the latest steelmaking process, that is, double-slag refining process (DRP). The technology we developed consists of the following four processes: Process (1) is the initial acid elution; Process (2) involves alkali precipitation; Process (3) is the second acid elution; and, Process (4) utilizes ion-exchange. In Process (1), the addition of DPR slag to 0.5 M of a nitric acid solution for 24 min resulted in sufficient phosphorus dissolution. In Process (2), ammonia was added to the dissolved solution, and phosphorus was precipitated with high efficiency. The timing of the addition of ammonia significantly influenced the removal of silicon and iron, which would have been inconvenient to accomplish in subsequent processes. In Process (3), the precipitation obtained in Process (2) was re-dissolved in a nitric acid solution. The dissolution of phosphorus together with other elements progressed sufficiently, and we confirmed that silicon could be completely separated as silica by using high-concentration nitric acid at this stage. The fact that silicon could be removed during Process (3) was an important finding, since silicon could not have been separated in the Process (4). In Process (4), by passing the phosphorus-containing solution obtained in Process (3) through an ion exchange resin, elements other than phosphorus and silicon could be removed, which confirms that the range of applications for this technology could be expanded.","PeriodicalId":20022,"journal":{"name":"Phosphorus Research Bulletin","volume":"130 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135267990","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":"PHOTODEGRADATION OF DYES IN THE PRESENCE OF BISMUTH-TREATED APATITES AS HETEROGENEOUS CATALYSTS IN WATER","authors":"T. Moriguchi, Sohei Nakagawa","doi":"10.3363/prb.39.1","DOIUrl":"https://doi.org/10.3363/prb.39.1","url":null,"abstract":"","PeriodicalId":20022,"journal":{"name":"Phosphorus Research Bulletin","volume":"125 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87071203","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}
S. Sugiyama, Kenta Imanishi, Takeru Ishimoto, Miku Hisai, N. Shimoda, Takaiku Yamamoto
{"title":"ELUTION BEHAVIOR OF DEPHOSPHORAZATION SLAG TO VARIOUS ACIDS AND EFFECT OF ADDITION OF AQUEOUS ALKALI TO ACID ELUATE","authors":"S. Sugiyama, Kenta Imanishi, Takeru Ishimoto, Miku Hisai, N. Shimoda, Takaiku Yamamoto","doi":"10.3363/prb.38.47","DOIUrl":"https://doi.org/10.3363/prb.38.47","url":null,"abstract":"","PeriodicalId":20022,"journal":{"name":"Phosphorus Research Bulletin","volume":"117 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79386072","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}
: In this study, we found that the use of phosphite esterified cellulose nanofibers (CNF-P) in combination with the foaming method can produce porous bodies due to the interaction between nonionic surfactants and hydrophobic/hydrophilic CNF-P. When the foaming method was applied to the water-based slurry, the hydrophilic-lipophilic balance of the nonionic surfactant used was about 11-14.5, indicating that the foam was stable during preparation. Furthermore, it was shown that the addition of CNF-P promoted the formation of both micron-sized pores and macro-sized pores (100-400 μm). (Received
{"title":"PREPARATION OF POROUS β-TRICALICUM PHOSPHATE BY FOAMING METHOD USING CELLULOSE NANOFIBERS WITH DIFFERENT MANUFACTURING METHODS AS FOAM STABILIZER","authors":"Gai Toyota, H. Shibata, K. Hashimoto","doi":"10.3363/prb.38.32","DOIUrl":"https://doi.org/10.3363/prb.38.32","url":null,"abstract":": In this study, we found that the use of phosphite esterified cellulose nanofibers (CNF-P) in combination with the foaming method can produce porous bodies due to the interaction between nonionic surfactants and hydrophobic/hydrophilic CNF-P. When the foaming method was applied to the water-based slurry, the hydrophilic-lipophilic balance of the nonionic surfactant used was about 11-14.5, indicating that the foam was stable during preparation. Furthermore, it was shown that the addition of CNF-P promoted the formation of both micron-sized pores and macro-sized pores (100-400 μm). (Received","PeriodicalId":20022,"journal":{"name":"Phosphorus Research Bulletin","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87073286","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}
A. Hayashi, Sawako Otsu, Hitomi Kamiji, A. Yoshioka, Shin Ando, Chiemi Inoue, Haruka Kohata, Hideko Maeda, H. Nakayama
{"title":"UPTAKE AND RELEASE OF SODIUM DIPHOSPHATE BY A CHLORIDE-TYPE LAYERED DOUBLE HYDROXIDE","authors":"A. Hayashi, Sawako Otsu, Hitomi Kamiji, A. Yoshioka, Shin Ando, Chiemi Inoue, Haruka Kohata, Hideko Maeda, H. Nakayama","doi":"10.3363/prb.38.53","DOIUrl":"https://doi.org/10.3363/prb.38.53","url":null,"abstract":"","PeriodicalId":20022,"journal":{"name":"Phosphorus Research Bulletin","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91431536","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}
S. Sugiyama, Li-Hao Hsiao, Taizo Tokunaga, Takumi Hashimoto, Masaki Habara, N. Shimoda, Jhy‐Chern Liu, Seiichi Abe, Takaiku Yamamoto
{"title":"PHOSPHORUS RECOVERY FROM SEWAGE-SLUDGE MOLTEN SLAG USING A COMBINATION OF ACID-DISSOLUTION, ALKALI-PRECIPITATION, AND ION-EXCHANGE","authors":"S. Sugiyama, Li-Hao Hsiao, Taizo Tokunaga, Takumi Hashimoto, Masaki Habara, N. Shimoda, Jhy‐Chern Liu, Seiichi Abe, Takaiku Yamamoto","doi":"10.3363/prb.38.60","DOIUrl":"https://doi.org/10.3363/prb.38.60","url":null,"abstract":"","PeriodicalId":20022,"journal":{"name":"Phosphorus Research Bulletin","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75688670","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}
: Metal ion substitution in calcium phosphate provides a vehicle for therapeutic delivery of metal ions at low cost and with a long shelf life. The whitlockite structure can incorporate metal ions, which enables the introduction of antibacterial and antiviral agents such as copper ions. The present study describes the synthesis of copper whitlockite (CuWH) via a single-step hydrothermal transformation of calcium hydrogen phosphate dihydrate in the presence of copper ions. Hexahedral morphology of single-phase CuWH was synthesized at 220 °C for 12 h at pH 2.0 in the presence of 5 to 7 mol% Cu 2+ ions, suggesting that CuWH precipitation was both dose- and pH-dependent. The CuWH structure contained protonated phosphate, which also suggests that Cu 2+ ions were incorporated not only into the Ca(5) site but also the Ca(4) site. The dissolution test mimicking a bioresorption environment created by osteoclasts showed similar dissolution characteristics of Ca 2+ and Cu 2+ ions in acetic acid–sodium acetate buffer solution containing potassium nitrate at pH 5.5.
{"title":"COPPER WHITLOCKITE SYNTHESIZED VIA HYDROTHERMAL TRANSFORMATION OF CALCIUM HYDROGEN PHOSPHATE DIHYDRATE","authors":"Toshiisa Konishi, Sadayuki Watanabe","doi":"10.3363/prb.38.18","DOIUrl":"https://doi.org/10.3363/prb.38.18","url":null,"abstract":": Metal ion substitution in calcium phosphate provides a vehicle for therapeutic delivery of metal ions at low cost and with a long shelf life. The whitlockite structure can incorporate metal ions, which enables the introduction of antibacterial and antiviral agents such as copper ions. The present study describes the synthesis of copper whitlockite (CuWH) via a single-step hydrothermal transformation of calcium hydrogen phosphate dihydrate in the presence of copper ions. Hexahedral morphology of single-phase CuWH was synthesized at 220 °C for 12 h at pH 2.0 in the presence of 5 to 7 mol% Cu 2+ ions, suggesting that CuWH precipitation was both dose- and pH-dependent. The CuWH structure contained protonated phosphate, which also suggests that Cu 2+ ions were incorporated not only into the Ca(5) site but also the Ca(4) site. The dissolution test mimicking a bioresorption environment created by osteoclasts showed similar dissolution characteristics of Ca 2+ and Cu 2+ ions in acetic acid–sodium acetate buffer solution containing potassium nitrate at pH 5.5.","PeriodicalId":20022,"journal":{"name":"Phosphorus Research Bulletin","volume":"62 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80971689","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":"RESEARCH AND DEVELOPMENTS OF INORGANIC PHOSPHATE MATERIALS WITH HIGH PERFORMANCE","authors":"K. Itatani","doi":"10.3363/prb.38.37","DOIUrl":"https://doi.org/10.3363/prb.38.37","url":null,"abstract":"","PeriodicalId":20022,"journal":{"name":"Phosphorus Research Bulletin","volume":"52 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86846981","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}
: Biological apatite found in the bone and teeth of mammals contains various ions, such as Na + , K + , Mg 2+ , F - and CO 32- . We have previously developed porous hydroxyapatite ceramics, containing bone minerals (bone HAp). These ceramics showed great bone-forming ability and bio-resorbability; however, their mechanical strengths were in sufficient for clinical application. Thus, we focused on the refinement of raw material powder to improve the strength of the resulting bone HAp ceramics. In particular, we clarified the effect of ball milling time on sinterability of the bone HAp powder. Among the prepared samples, the most easily sinterable powder was prepared after ball milling for 1 hour. This powder showed the smallest particle size with a particle size distribution that was close to a uniform distribution. The compressive strengths of Bone HAp ceramics from powders prepared by ball-milling for 30 minutes and 1 hour were of 55.7 MPa and 63.1 MPa, respectively. (Received
在哺乳动物的骨骼和牙齿中发现的生物磷灰石含有各种离子，如Na +， K +， mg2 +， F -和co32 -。我们之前已经开发了多孔羟基磷灰石陶瓷，含有骨矿物质(骨HAp)。这些陶瓷具有良好的骨形成能力和生物可吸收性;但其机械强度足以用于临床应用。因此，我们专注于原料粉末的细化，以提高所得骨HAp陶瓷的强度。特别地，我们阐明了球磨时间对骨HAp粉末烧结性能的影响。在所制备的样品中，球磨1小时后制备的粉末最易烧结。该粉体粒径最小，粒径分布接近均匀分布。球磨法制备的粉末抗压强度分别为55.7 MPa和63.1 MPa。(收到
{"title":"EFFECT OF BALL-MILLING TREATMENT ON SINTERABILITY OF HYDROXYAPATITE CERAMICS INCLUDING BONE MINERALS","authors":"Shota Okitsu, Tomohiro Yokota, M. Aizawa","doi":"10.3363/prb.38.25","DOIUrl":"https://doi.org/10.3363/prb.38.25","url":null,"abstract":": Biological apatite found in the bone and teeth of mammals contains various ions, such as Na + , K + , Mg 2+ , F - and CO 32- . We have previously developed porous hydroxyapatite ceramics, containing bone minerals (bone HAp). These ceramics showed great bone-forming ability and bio-resorbability; however, their mechanical strengths were in sufficient for clinical application. Thus, we focused on the refinement of raw material powder to improve the strength of the resulting bone HAp ceramics. In particular, we clarified the effect of ball milling time on sinterability of the bone HAp powder. Among the prepared samples, the most easily sinterable powder was prepared after ball milling for 1 hour. This powder showed the smallest particle size with a particle size distribution that was close to a uniform distribution. The compressive strengths of Bone HAp ceramics from powders prepared by ball-milling for 30 minutes and 1 hour were of 55.7 MPa and 63.1 MPa, respectively. (Received","PeriodicalId":20022,"journal":{"name":"Phosphorus Research Bulletin","volume":"55 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91225514","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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