The Experts below are selected from a list of 138 Experts worldwide ranked by ideXlab platform
Siti Kartom Kamarudin - One of the best experts on this subject based on the ideXlab platform.
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Isotherm equilibria of Mn2+ biosorption in drinking Water treatment by locally isolated Bacillus species and sewage activated sludge
Journal of Environmental Management, 2012Co-Authors: Hassimi Abu Hasan, Siti Rozaimah Sheikh Abdullah, Noorhisham Tan Kofli, Siti Kartom KamarudinAbstract:Abstract Manganese (Mn 2+ ) is one of the inorganic contaminant that causes problem to Water treatment and Water distribution due to the accumulation on Water Piping Systems. In this study, Bacillus sp. and sewage activated sludge (SAS) were investigated as biosorbents in laboratory-scale experiments. The study showed that Bacillus sp. was a more effective biosorbent than SAS. The experimental data were fitted to the Langmuir (Langmuir-1 & Langmuir-2), Freundlich, Temkin, Dubinin-Radushkevich (D-R) and Redlich-Peterson (R-P) isotherms to obtain the characteristic parameters of each model. Mn 2+ biosorption by Bacillus sp. was found to be significantly better fitted to the Langmuir-1 isotherm than the other isotherms, while the D-R isotherm was the best fit for SAS; i.e., the χ 2 value was smaller than that for the Freundlich, Temkin, and R-P isotherms. According to the evaluation using the Langmuir-1 isotherm, the maximum biosorption capacities of Mn 2+ onto Bacillus sp. and SAS were 43.5 mg Mn 2+ /g biomass and 12.7 mg Mn 2+ /g biomass, respectively. The data fitted using the D-R isotherm showed that the Mn 2+ biosorption processes by both Bacillus sp. and SAS occurred via the chemical ion-exchange mechanism between the functional groups and Mn 2+ ion.
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Isotherm equilibria of Mn2+biosorption in drinking Water treatment by locally isolated Bacillus species and sewage activated sludge
Journal of Environmental Management, 2012Co-Authors: Hassimi Abu Hasan, Noorhisham Tan Kofli, Siti Rozaimah Sheikh Abdullah, Siti Kartom KamarudinAbstract:Manganese (Mn2+) is one of the inorganic contaminant that causes problem to Water treatment and Water distribution due to the accumulation on Water Piping Systems. In this study, Bacillus sp. and sewage activated sludge (SAS) were investigated as biosorbents in laboratory-scale experiments. The study showed that Bacillus sp. was a more effective biosorbent than SAS. The experimental data were fitted to the Langmuir (Langmuir-1 & Langmuir-2), Freundlich, Temkin, Dubinin-Radushkevich (D-R) and Redlich-Peterson (R-P) isotherms to obtain the characteristic parameters of each model. Mn2+biosorption by Bacillus sp. was found to be significantly better fitted to the Langmuir-1 isotherm than the other isotherms, while the D-R isotherm was the best fit for SAS; i.e., the χ2value was smaller than that for the Freundlich, Temkin, and R-P isotherms. According to the evaluation using the Langmuir-1 isotherm, the maximum biosorption capacities of Mn2+onto Bacillus sp. and SAS were 43.5 mg Mn2+/g biomass and 12.7 mg Mn2+/g biomass, respectively. The data fitted using the D-R isotherm showed that the Mn2+biosorption processes by both Bacillus sp. and SAS occurred via the chemical ion-exchange mechanism between the functional groups and Mn2+ion. © 2012 Elsevier Ltd.
George Gary Thomas - One of the best experts on this subject based on the ideXlab platform.
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Concurrent Load Design Criteria for Buried High Density Polyethylene Pipe in ASME BPVC Section III, Division 1, Applications: Part III — Sample Problem
Volume 1: Codes and Standards, 2007Co-Authors: George Gary Thomas, Jack Spanner, Timothy M. Adams, Siegrid HallAbstract:The commercial Light Water Reactors operating within the United States have been in service from about 20 to 35 years. These plants include buried Service Water Piping Systems primarily made from low carbon steel. This Piping has been subject to aging over the years, resulting in degradation and corrosion that will require replacement of the Piping. Due to the advantageous cost and durability of High Density Polyethylene (HDPE) Piping (as demonstrated in other commercial industries), the industry has expressed interest in replacing steel buried Service Water Piping in Nuclear Power Stations with HDPE Piping. To assist in this effort EPRI has funded and supported the work summarized in this paper to develop design criteria for HPDE Pipe. This paper provides an example problem demonstrating the application of recently developed design criteria for HDPE Piping. The technical bases of these criteria are presented in separate papers and are not repeated in this discussion.Copyright © 2007 by ASME
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Seismic and Concurrent Load Design Criteria for Buried High Density Polyethylene Pipe in ASME BPVC Section III, Division 1, Applications: Part II — Piping Soil Interaction Design Basis Criteria
Volume 1: Codes and Standards, 2007Co-Authors: George Gary Thomas, Jack Spanner, Rudolph J. Scavuzzo, Timothy M. AdamsAbstract:The commercial Light Water Reactors operating within the United States have been in service from about 20 to 35 years. These plants include buried Service Water Piping Systems primarily made from low carbon steel. This Piping at several plants has been subject to aging over the years, resulting in degradation and corrosion that may require replacement of the Piping. Due to the advantageous cost and durability of High Density Polyethylene (HDPE) Piping (as demonstrated in other commercial industries), the nuclear power industry has expressed interest in replacing steel buried Service Water Piping in Nuclear Power Stations with HDPE Pipe. To assist in this effort EPRI has funded and supported the work summarized in this paper to develop design criteria for HPDE Pipe. The paper provides design criteria for High Density Polyethylene (HDPE) pipe made from PE 3408 resin. It also provides the technical basis for the proposed criteria. This paper deals primarily with the design of the Piping in relation to its interface with the soil in which it is buried. The criteria primarily is derived from current analysis methodology for steel and concrete buried pipe while incorporating changes required to account for the properties and behavior of HDPE pipe. The proposed analysis methodology described herein has evolved into a proposed ASME Boiler and Pressure Vessel Code, Section III, Division I, Design Code Case for consideration by the Section III, Subcommittee on Nuclear Power.Copyright © 2007 by ASME
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Seismic and Concurrent Load Design Criteria for Buried High Density Polyethylene Pipe in ASME BPVC Section III, Division 1, Applications: Part I — Piping Design Basis Criteria
Volume 1: Codes and Standards, 2007Co-Authors: Timothy M. Adams, Jack Spanner, Rudolph J. Scavuzzo, George Gary ThomasAbstract:The commercial Light Water Reactors operating within the United States have been in service from about 20 to 35 years. These plants include buried Service Water Piping Systems primarily made from low carbon steel. This Piping has been subject to aging over the years, resulting in degradation and corrosion that will require replacement of the Piping. Due to the advantageous cost and durability of High Density Polyethylene (HDPE) Piping (as demonstrated in other commercial industries), ASME code inclusion of this Piping is logical. Duke Power industry has expressed interest in replacing a portion of their steel buried Service Water Piping in Nuclear Power Stations with HDPE pipe. To assist in this effort EPRI has funded and supported the work summarized in this paper to develop design criteria for HPDE Pipe and has teamed with EPRI to develop appropriate ASME Code requirements. Other nuclear utilities will follow once HDPE Piping is included in the ASME Code. This paper includes proposed allowable limits of all modes of failure and provides design criteria for HDPE pipe made from PE 3408 resin. It also provides the technical basis for the proposed criteria. This paper deals primarily with the actual design of the Piping. The methods included comply with ASME Power Piping Code, B31.1-2004 and Section III of the ASME Boiler and Pressure Vessel Code. Extensive use was made of industrial research, data and experience over 40 years of use of high-density polyethylene Piping. Allowable stresses are based on data published in these sources for Design and Service Levels A-D.
Timothy M. Adams - One of the best experts on this subject based on the ideXlab platform.
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Concurrent Load Design Criteria for Buried High Density Polyethylene Pipe in ASME BPVC Section III, Division 1, Applications: Part III — Sample Problem
Volume 1: Codes and Standards, 2007Co-Authors: George Gary Thomas, Jack Spanner, Timothy M. Adams, Siegrid HallAbstract:The commercial Light Water Reactors operating within the United States have been in service from about 20 to 35 years. These plants include buried Service Water Piping Systems primarily made from low carbon steel. This Piping has been subject to aging over the years, resulting in degradation and corrosion that will require replacement of the Piping. Due to the advantageous cost and durability of High Density Polyethylene (HDPE) Piping (as demonstrated in other commercial industries), the industry has expressed interest in replacing steel buried Service Water Piping in Nuclear Power Stations with HDPE Piping. To assist in this effort EPRI has funded and supported the work summarized in this paper to develop design criteria for HPDE Pipe. This paper provides an example problem demonstrating the application of recently developed design criteria for HDPE Piping. The technical bases of these criteria are presented in separate papers and are not repeated in this discussion.Copyright © 2007 by ASME
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Seismic and Concurrent Load Design Criteria for Buried High Density Polyethylene Pipe in ASME BPVC Section III, Division 1, Applications: Part II — Piping Soil Interaction Design Basis Criteria
Volume 1: Codes and Standards, 2007Co-Authors: George Gary Thomas, Jack Spanner, Rudolph J. Scavuzzo, Timothy M. AdamsAbstract:The commercial Light Water Reactors operating within the United States have been in service from about 20 to 35 years. These plants include buried Service Water Piping Systems primarily made from low carbon steel. This Piping at several plants has been subject to aging over the years, resulting in degradation and corrosion that may require replacement of the Piping. Due to the advantageous cost and durability of High Density Polyethylene (HDPE) Piping (as demonstrated in other commercial industries), the nuclear power industry has expressed interest in replacing steel buried Service Water Piping in Nuclear Power Stations with HDPE Pipe. To assist in this effort EPRI has funded and supported the work summarized in this paper to develop design criteria for HPDE Pipe. The paper provides design criteria for High Density Polyethylene (HDPE) pipe made from PE 3408 resin. It also provides the technical basis for the proposed criteria. This paper deals primarily with the design of the Piping in relation to its interface with the soil in which it is buried. The criteria primarily is derived from current analysis methodology for steel and concrete buried pipe while incorporating changes required to account for the properties and behavior of HDPE pipe. The proposed analysis methodology described herein has evolved into a proposed ASME Boiler and Pressure Vessel Code, Section III, Division I, Design Code Case for consideration by the Section III, Subcommittee on Nuclear Power.Copyright © 2007 by ASME
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Seismic and Concurrent Load Design Criteria for Buried High Density Polyethylene Pipe in ASME BPVC Section III, Division 1, Applications: Part I — Piping Design Basis Criteria
Volume 1: Codes and Standards, 2007Co-Authors: Timothy M. Adams, Jack Spanner, Rudolph J. Scavuzzo, George Gary ThomasAbstract:The commercial Light Water Reactors operating within the United States have been in service from about 20 to 35 years. These plants include buried Service Water Piping Systems primarily made from low carbon steel. This Piping has been subject to aging over the years, resulting in degradation and corrosion that will require replacement of the Piping. Due to the advantageous cost and durability of High Density Polyethylene (HDPE) Piping (as demonstrated in other commercial industries), ASME code inclusion of this Piping is logical. Duke Power industry has expressed interest in replacing a portion of their steel buried Service Water Piping in Nuclear Power Stations with HDPE pipe. To assist in this effort EPRI has funded and supported the work summarized in this paper to develop design criteria for HPDE Pipe and has teamed with EPRI to develop appropriate ASME Code requirements. Other nuclear utilities will follow once HDPE Piping is included in the ASME Code. This paper includes proposed allowable limits of all modes of failure and provides design criteria for HDPE pipe made from PE 3408 resin. It also provides the technical basis for the proposed criteria. This paper deals primarily with the actual design of the Piping. The methods included comply with ASME Power Piping Code, B31.1-2004 and Section III of the ASME Boiler and Pressure Vessel Code. Extensive use was made of industrial research, data and experience over 40 years of use of high-density polyethylene Piping. Allowable stresses are based on data published in these sources for Design and Service Levels A-D.
Hassimi Abu Hasan - One of the best experts on this subject based on the ideXlab platform.
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Isotherm equilibria of Mn2+biosorption in drinking Water treatment by locally isolated Bacillus species and sewage activated sludge
Journal of Environmental Management, 2012Co-Authors: Hassimi Abu Hasan, Noorhisham Tan Kofli, Siti Rozaimah Sheikh Abdullah, Siti Kartom KamarudinAbstract:Manganese (Mn2+) is one of the inorganic contaminant that causes problem to Water treatment and Water distribution due to the accumulation on Water Piping Systems. In this study, Bacillus sp. and sewage activated sludge (SAS) were investigated as biosorbents in laboratory-scale experiments. The study showed that Bacillus sp. was a more effective biosorbent than SAS. The experimental data were fitted to the Langmuir (Langmuir-1 & Langmuir-2), Freundlich, Temkin, Dubinin-Radushkevich (D-R) and Redlich-Peterson (R-P) isotherms to obtain the characteristic parameters of each model. Mn2+biosorption by Bacillus sp. was found to be significantly better fitted to the Langmuir-1 isotherm than the other isotherms, while the D-R isotherm was the best fit for SAS; i.e., the χ2value was smaller than that for the Freundlich, Temkin, and R-P isotherms. According to the evaluation using the Langmuir-1 isotherm, the maximum biosorption capacities of Mn2+onto Bacillus sp. and SAS were 43.5 mg Mn2+/g biomass and 12.7 mg Mn2+/g biomass, respectively. The data fitted using the D-R isotherm showed that the Mn2+biosorption processes by both Bacillus sp. and SAS occurred via the chemical ion-exchange mechanism between the functional groups and Mn2+ion. © 2012 Elsevier Ltd.
Jack Spanner - One of the best experts on this subject based on the ideXlab platform.
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Concurrent Load Design Criteria for Buried High Density Polyethylene Pipe in ASME BPVC Section III, Division 1, Applications: Part III — Sample Problem
Volume 1: Codes and Standards, 2007Co-Authors: George Gary Thomas, Jack Spanner, Timothy M. Adams, Siegrid HallAbstract:The commercial Light Water Reactors operating within the United States have been in service from about 20 to 35 years. These plants include buried Service Water Piping Systems primarily made from low carbon steel. This Piping has been subject to aging over the years, resulting in degradation and corrosion that will require replacement of the Piping. Due to the advantageous cost and durability of High Density Polyethylene (HDPE) Piping (as demonstrated in other commercial industries), the industry has expressed interest in replacing steel buried Service Water Piping in Nuclear Power Stations with HDPE Piping. To assist in this effort EPRI has funded and supported the work summarized in this paper to develop design criteria for HPDE Pipe. This paper provides an example problem demonstrating the application of recently developed design criteria for HDPE Piping. The technical bases of these criteria are presented in separate papers and are not repeated in this discussion.Copyright © 2007 by ASME
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Seismic and Concurrent Load Design Criteria for Buried High Density Polyethylene Pipe in ASME BPVC Section III, Division 1, Applications: Part II — Piping Soil Interaction Design Basis Criteria
Volume 1: Codes and Standards, 2007Co-Authors: George Gary Thomas, Jack Spanner, Rudolph J. Scavuzzo, Timothy M. AdamsAbstract:The commercial Light Water Reactors operating within the United States have been in service from about 20 to 35 years. These plants include buried Service Water Piping Systems primarily made from low carbon steel. This Piping at several plants has been subject to aging over the years, resulting in degradation and corrosion that may require replacement of the Piping. Due to the advantageous cost and durability of High Density Polyethylene (HDPE) Piping (as demonstrated in other commercial industries), the nuclear power industry has expressed interest in replacing steel buried Service Water Piping in Nuclear Power Stations with HDPE Pipe. To assist in this effort EPRI has funded and supported the work summarized in this paper to develop design criteria for HPDE Pipe. The paper provides design criteria for High Density Polyethylene (HDPE) pipe made from PE 3408 resin. It also provides the technical basis for the proposed criteria. This paper deals primarily with the design of the Piping in relation to its interface with the soil in which it is buried. The criteria primarily is derived from current analysis methodology for steel and concrete buried pipe while incorporating changes required to account for the properties and behavior of HDPE pipe. The proposed analysis methodology described herein has evolved into a proposed ASME Boiler and Pressure Vessel Code, Section III, Division I, Design Code Case for consideration by the Section III, Subcommittee on Nuclear Power.Copyright © 2007 by ASME
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Seismic and Concurrent Load Design Criteria for Buried High Density Polyethylene Pipe in ASME BPVC Section III, Division 1, Applications: Part I — Piping Design Basis Criteria
Volume 1: Codes and Standards, 2007Co-Authors: Timothy M. Adams, Jack Spanner, Rudolph J. Scavuzzo, George Gary ThomasAbstract:The commercial Light Water Reactors operating within the United States have been in service from about 20 to 35 years. These plants include buried Service Water Piping Systems primarily made from low carbon steel. This Piping has been subject to aging over the years, resulting in degradation and corrosion that will require replacement of the Piping. Due to the advantageous cost and durability of High Density Polyethylene (HDPE) Piping (as demonstrated in other commercial industries), ASME code inclusion of this Piping is logical. Duke Power industry has expressed interest in replacing a portion of their steel buried Service Water Piping in Nuclear Power Stations with HDPE pipe. To assist in this effort EPRI has funded and supported the work summarized in this paper to develop design criteria for HPDE Pipe and has teamed with EPRI to develop appropriate ASME Code requirements. Other nuclear utilities will follow once HDPE Piping is included in the ASME Code. This paper includes proposed allowable limits of all modes of failure and provides design criteria for HDPE pipe made from PE 3408 resin. It also provides the technical basis for the proposed criteria. This paper deals primarily with the actual design of the Piping. The methods included comply with ASME Power Piping Code, B31.1-2004 and Section III of the ASME Boiler and Pressure Vessel Code. Extensive use was made of industrial research, data and experience over 40 years of use of high-density polyethylene Piping. Allowable stresses are based on data published in these sources for Design and Service Levels A-D.
