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Chemically Bonded Phosphate Ceramics

Chemically Bonded Phosphate Ceramics
  • Author : Arun S. Wagh
  • Publisher :Unknown
  • Release Date :2016-05-17
  • Total pages :422
  • ISBN : 9780081003961
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Summary : This book brings together the latest developments in chemically bonded phosphate ceramics (CBPCs), including several novel ceramics, from US Federal Laboratories such as Argonne, Oak Ridge, and Brookhaven National Laboratories, as well as Russian and Ukrainian nuclear institutes. Coupled with further advances in their use as biomaterials, these materials have found uses in diverse fields in recent years. Applications range from advanced structural materials to corrosion and fire protection coatings, oil-well cements, stabilization and encapsulation of hazardous and radioactive waste, nuclear radiation shielding materials, and products designed for safe storage of nuclear materials. Such developments call for a single source to cover their science and applications. This book is a unique and comprehensive source to fulfil that need. In the second edition, the author covers the latest developments in nuclear waste containment and introduces new products and applications in areas such as biomedical implants, cements and coatings used in oil-well and other petrochemical applications, and flame-retardant anti-corrosion coatings. Explores the key applications of CBPCs including nuclear waste storage, oil-well cements, anticorrosion coatings and biomedical implants Demystifies the chemistry, processes and production methods of CBPCs Draws on 40 years of developments and applications in the field, including the latest developments from USA, Europe, Ukraine, Russia, China and India

Chemically Bonded Phosphate Ceramics

Chemically Bonded Phosphate Ceramics
  • Author : Arun S. Wagh
  • Publisher :Unknown
  • Release Date :2016-06-01
  • Total pages :416
  • ISBN : 0081003803
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Summary : This book brings together the latest developments in chemically bonded phosphate ceramics (CBPCs), including several novel ceramics, from US Federal Laboratories such as Argonne, Oak Ridge, and Brookhaven National Laboratories, as well as Russian and Ukrainian nuclear institutes. Coupled with further advances in their use as biomaterials, these materials have found uses in diverse fields in recent years. Applications range from advanced structural materials to corrosion and fire protection coatings, oil-well cements, stabilization and encapsulation of hazardous and radioactive waste, nuclear radiation shielding materials, and products designed for safe storage of nuclear materials. Such developments call for a single source to cover their science and applications. This book is a unique and comprehensive source to fulfil that need. In the second edition, the author covers the latest developments in nuclear waste containment and introduces new products and applications in areas such as biomedical implants, cements and coatings used in oil-well and other petrochemical applications, and flame-retardant anti-corrosion coatings. Explores the key applications of CBPCs including nuclear waste storage, oil-well cements, anticorrosion coatings and biomedical implants Demystifies the chemistry, processes and production methods of CBPCs Draws on 40 years of developments and applications in the field, including the latest developments from USA, Europe, Ukraine, Russia, China and India

Chemically Bonded Phosphate Ceramics for Low-level Mixed Waste Stabilization

Chemically Bonded Phosphate Ceramics for Low-level Mixed Waste Stabilization
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :1994
  • Total pages :229
  • ISBN : OCLC:880034676
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Summary :

Chemically Bonded Phosphate Ceramics

Chemically Bonded Phosphate Ceramics
  • Author : Arun S. Wagh
  • Publisher :Unknown
  • Release Date :2004
  • Total pages :283
  • ISBN : 0080445055
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Summary : The first chemically bonded phosphate ceramics (zinc phosphate dental cements) were developed over a century ago. However it has only been in the last 30 years that a new breed of materials has been discovered. This book brings together latest developments in this field including several novel ceramics, from Argonne and Brookhaven National Laboratories. Coupled with further advances in their use as biomaterials, these materials have found uses in diverse fields in recent years. Applications range from advanced structural materials to oil-well cements and stabilization and encapsulation of hazardous and radioactive waste. Such developments call a single source for their science and applications. This book provides the first comprehensive account to fulfil this need. · Providing a foundation into the latest developments in chemically bonded phosphate ceramics. · Explores new CBPC's with a wide range of practical applications. · Over 30 years worth of developments and applications in the field available in a single source

Investigation of Chemically Bonded Phosphate Ceramics/cements and Applicability of Magnesium Potassium Phosphate Cements as Wellbore Sealants in the Oil & Gas Industry

Investigation of Chemically Bonded Phosphate Ceramics/cements and Applicability of Magnesium Potassium Phosphate Cements as Wellbore Sealants in the Oil & Gas Industry
  • Author : Kahraman Barut
  • Publisher :Unknown
  • Release Date :2018
  • Total pages :134
  • ISBN : OCLC:1097553557
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Summary : Cementing jobs especially in arctic regions and/or geothermal fields in the oil and gas industry pose significant challenges and demand critical mechanical properties on cements. Researchers propose that chemically bonded phosphate ceramics/cements (CBPC) can successfully be used as wellbore sealants where conventional Portland cement systems fail to meet desired properties. Chemically bonded phosphate cements can be described as rapid setting cements, which achieve the hardness and the durability of conventional cements and ceramics. Magnesium potassium phosphate cements (MKPC) are the most developed materials in the family of chemically bonded phosphate cements. They are formed at ambient temperatures by chemical reactions between dead burned magnesium oxide (MgO) and potassium dihydrogen phosphate (KH2PO4). In general, they exhibit superior mechanical properties than Portland cement systems, and they have successfully found applications in various fields where the benefits outweigh the costs such as radioactive/hazardous waste encapsulation, biomedical/clinical treatments, and civil engineering structural materials. In the literature, only a few MKPC formulations have been proposed as wellbore sealants for permafrost wells by simulating the arctic conditions. In this thesis, an investigation of the applicability of chemically bonded phosphate ceramics/cements in the oil and gas industry has been conducted with a primary focus on magnesium potassium phosphate cements (MKPC). Furthermore, new MKPC formulations in compliance with American Petroleum Institute (API) standards with sufficiently long thickening time (pumping time) and enough compressive strengths have been achieved at 72 0F temperature and at atmospheric pressure conditions by this study

Nanostructural Bioceramics

Nanostructural Bioceramics
  • Author : Leif Hermansson
  • Publisher :Unknown
  • Release Date :2014-08-20
  • Total pages :170
  • ISBN : 9789814463430
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Summary : Biomaterials are produced in situ and in vivo in the body using mainly hydration reactions, that is, reactions between phosphates, silicates or aluminates, and water. The nanostructural integration of these biomaterials in the body is controlled by six mechanisms. The biomaterial interaction with body liquid results in bioactivity and total closure of the contact zone between the biomaterial and hard tissue. This book describes the new biomaterials based on nanostructural chemically bonded bioceramics and discusses their general and specific properties. It presents an overview of the nanostructural chemically bonded bioceramics, including their processing aspects, properties, integration with tissues, relation to other bioceramics and biomaterials, and nanostructural integration in different dental and orthopaedic applications. The book also describes the potential application areas for these new chemically bonded bioceramics.

Chemically Bonded Phosphate Ceramics of Trivalent Oxides of Iron and Manganese

Chemically Bonded Phosphate Ceramics of Trivalent Oxides of Iron and Manganese
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :2002
  • Total pages :229
  • ISBN : OCLC:873785789
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Summary : A new method for combining elemental iron and other metals to form an inexpensive ceramic to stabilize arsenic, alkaline red mud wastes, swarfs, and other iron or metal-based additives, to create products and waste forms which can be poured or dye cast.

Method for Producing Chemically Bonded Phosphate Ceramics and for Stabilizing Contaminants Encapsulated Therein Utilizing Reducing Agents

Method for Producing Chemically Bonded Phosphate Ceramics and for Stabilizing Contaminants Encapsulated Therein Utilizing Reducing Agents
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :2000
  • Total pages :229
  • ISBN : OCLC:873776722
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Summary : Known phosphate ceramic formulations are improved and the ability to produce iron-based phosphate ceramic systems is enabled by the addition of an oxidizing or reducing step during the acid-base reactions that form the phosphate ceramic products. The additives allow control of the rate of the acid-base reactions and concomitant heat generation. In an alternate embodiment, waste containing metal anions are stabilized in phosphate ceramic products by the addition of a reducing agent to the phosphate ceramic mixture. The reduced metal ions are more stable and/or reactive with the phosphate ions, resulting in the formation of insoluble metal species within the phosphate ceramic matrix, such that the resulting chemically bonded phosphate ceramic product has greater leach resistance.

Mercury Stabilization in Chemically Bonded Phosphate Ceramics

Mercury Stabilization in Chemically Bonded Phosphate Ceramics
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :2000
  • Total pages :12
  • ISBN : OCLC:68439715
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Summary : Mercury stabilization and solidification is a significant challenge for conventional stabilization technologies. This is because of the stringent regulatory limits on leaching of its stabilized products. In a conventional cement stabilization process, Hg is converted at high pH to its hydroxide, which is not a very insoluble compound; hence the preferred route for Hg sulfidation to convert it into insoluble cinnabar (HgS). Unfortunately, efficient formation of this compound is pH-dependent. At a high pH, one obtains a more soluble Hg sulfate, in a very low pH range, insufficient immobilization occurs because of the escape of hydrogen sulfide, while efficient formation of HgS occurs only in a moderately acidic region. Thus, the pH range of 4 to 8 is where stabilization with Chemically Bonded Phosphate Ceramics (CBPC) is carried out. This paper discusses the authors experience on bench-scale stabilization of various US Department of Energy (DOE) waste streams containing Hg in the CBPC process. This process was developed to treat DOE's mixed waste streams. It is a room-temperature-setting process based on an acid-base reaction between magnesium oxide and monopotassium phosphate solution that forms a dense ceramic within hours. For Hg stabilization, addition of a small amount (

Stabilization of Low-level Mixed Waste in Chemically Bonded Phosphate Ceramics

Stabilization of Low-level Mixed Waste in Chemically Bonded Phosphate Ceramics
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :1994
  • Total pages :229
  • ISBN : OCLC:880091174
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Summary :

Evaluation of Chemically Bonded Phosphate Ceramics for Mercury Stabilization of a Mixed Synthetic Waste

Evaluation of Chemically Bonded Phosphate Ceramics for Mercury Stabilization of a Mixed Synthetic Waste
  • Author : Sandip Chattopadhyay
  • Publisher :Unknown
  • Release Date :2003
  • Total pages :61
  • ISBN : OCLC:690630318
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Summary :

Development of Chemically Bonded Phosphate Ceramics for Stabilizing Low-level Mixed Wastes

Development of Chemically Bonded Phosphate Ceramics for Stabilizing Low-level Mixed Wastes
  • Author : Seung-Young Jeong
  • Publisher :Unknown
  • Release Date :1997
  • Total pages :366
  • ISBN : OCLC:38963191
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Summary :

Method of Waste Stabilization Via Chemically Bonded Phosphate Ceramics

Method of Waste Stabilization Via Chemically Bonded Phosphate Ceramics
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :1998
  • Total pages :229
  • ISBN : OCLC:873767996
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Summary : A method for regulating the reaction temperature of a ceramic formulation process is provided comprising supplying a solution containing a monovalent alkali metal; mixing said solution with an oxide powder to create a binder; contacting said binder with bulk material to form a slurry; and allowing the slurry to cure. A highly crystalline waste form is also provided consisting of a binder containing potassium and waste substrate encapsulated by the binder.

Chemically Bonded Phosphate Ceramics for Radioactive and Mixed Waste Solidification and Stabilization

Chemically Bonded Phosphate Ceramics for Radioactive and Mixed Waste Solidification and Stabilization
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :1993
  • Total pages :20
  • ISBN : OCLC:929856365
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Summary :

Chemically Bonded Phosphate Ceramics for Radioactive and Mixed Waste Solidification and Stabilization

Chemically Bonded Phosphate Ceramics for Radioactive and Mixed Waste Solidification and Stabilization
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :1993
  • Total pages :20
  • ISBN : OCLC:727190140
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Summary : Results of an initial investigation of low temperature setting chemically bonded magnesium ammonium phosphate (MAP) ceramics as waste form materials, for solidification and stabilization of radioactive and mixed waste, are reported. The suitability of MAP for solidifying and encapsulating waste materials was tested by encapsulating zeolites at loadings up to (approximately)50 wt%. The resulting composites exhibited very good compressive strength characteristics. Microstructure studies show that zeolite grains remain unreacted in the matrix. Potential uses for solidifying and stab wastes are discussed.

Iron-phosphate-based Chemically Bonded Phosphate Ceramics for Mixed Waste Stabilization

Iron-phosphate-based Chemically Bonded Phosphate Ceramics for Mixed Waste Stabilization
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :1997
  • Total pages :10
  • ISBN : OCLC:68415136
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Summary : In an effort to develop chemically bonded phosphate ceramics for mixed waste stabilization, a collaborative project to develop iron-phosphate based ceramics has been initiated between Argonne National Laboratory and the V.G. Khlopin Radium Institute in St. Petersburg, Russia. The starter powders are oxides of iron that are generated as inexpensive byproduct materials in the iron and steel industry. They contain iron oxides as a mixture of magnetite (Fe3O4) and haematite (Fe2O3). In this initial phase of this project, both of these compounds were investigated independently. Each was reacted with phosphoric acid solution to form iron phosphate ceramics. In the case of magnetite, the reaction was rapid. Adding ash as the waste component containing hazardous contaminants resulted in a dense and hard ceramic rich in glassy phase. On the other hand, the reaction of phosphoric acid solution with a mixture of haematite and ash waste contaminated with cesium and americium was too slow. Samples had to be molded under pressure. They were cured for 2-3 weeks and then hardened by heating at 350°C for 3 h. The resulting ceramics in both cases were subjected to physical tests for measurement of density, open porosity, compression strength, phase analyses using X-ray diffraction and differential thermal analysis, and leaching tests using toxicity characteristic leaching procedure (TCLP) and ANS 16.1 with 7 days of leaching. Using the preliminary information obtained from these tests, we evaluated these materials for stabilization of Department of Energy's mixed waste streams.

Chemically Bonded Phosphate Ceramics for Stabilizing Low-level Radioactive Wastes

Chemically Bonded Phosphate Ceramics for Stabilizing Low-level Radioactive Wastes
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :1996
  • Total pages :229
  • ISBN : OCLC:880060668
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Summary :

Apatites and their Synthetic Analogues

Apatites and their Synthetic Analogues
  • Author : Petr Ptáček
  • Publisher :Unknown
  • Release Date :2016-04-13
  • Total pages :514
  • ISBN : 9789535122654
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Summary : Apatite-type minerals and their synthetic analogues are of interest of many industrial branches and scientific disciplines including material sciences, chemical industry, agriculture, geology, medicine and dentistry. This book provides a basic overview of general knowledges of this topic in order to provide the comprehensive survey from a scientific and technological perspective. The book is divided into 10 chapters, which are devoted to the structure and properties of minerals from the supergroup of apatite, experimental techniques of preparation and characterization of synthetic analogues of apatite minerals, substitution in the structure of apatite as well as utilization of these materials in wide range of common and special advanced applications in industry, material sciences and research. Additionally, the phosphate rocks, their classification, geological role, mining and beneficiation of phosphate ore, production of elemental phosphorus, phosphoric acid and fertilizers are also described. Although this book is meant for chemist, material scientist and research engineers, the individual chapters contain theoretical background, historical aspects as well as examples of synthetic and analytical methods which may be also interesting for students and non-expert readers as well.

Characterization and Improvement of Chemically Bonded Phosphate Ceramics for Immobilization of Fission Products

Characterization and Improvement of Chemically Bonded Phosphate Ceramics for Immobilization of Fission Products
  • Author : Marcin Tlustochowicz
  • Publisher :Unknown
  • Release Date :1998
  • Total pages :229
  • ISBN : OCLC:40604818
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Summary :

Determination of Linear Attenuation Coefficients of Chemically Bonded Phosphate Ceramics

Determination of Linear Attenuation Coefficients of Chemically Bonded Phosphate Ceramics
  • Author : Jason Joseph Pleitt
  • Publisher :Unknown
  • Release Date :2012
  • Total pages :88
  • ISBN : OCLC:815645463
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Summary : "Chemically Bonded Phosphate Ceramics (CBPCs) is a composite based material formed in a manner similar to cements. CBPCs have shown to be a good structural material with excellent thermal resistance properties. They have also been shown to have potential as a radiation shield. By incorporating various powders into the ceramic the improvement in its radiation shielding properties are examined. The method for obtaining the linear attenuation coefficients for CBPCs as well as MCNP simulated results for gamma and neutrons are presented"--Abstract, leaf iv.

Wollastonite-Based Chemically Bonded Phosphate Ceramic Composites

Wollastonite-Based Chemically Bonded Phosphate Ceramic Composites
  • Author : Henry Colorado
  • Publisher :Unknown
  • Release Date :2011
  • Total pages :229
  • ISBN : OCLC:1154250478
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Summary : Wollastonite-Based Chemically Bonded Phosphate Ceramic Composites.