The Experts below are selected from a list of 163800 Experts worldwide ranked by ideXlab platform
Mark T Morgan - One of the best experts on this subject based on the ideXlab platform.
-
the application of high concentration short time chlorine dioxide Treatment for selected specialty crops including roma tomatoes lycopersicon esculentum cantaloupes cucumis melo ssp melo var cantaloupensis and strawberries fragaria ananassa
Food Microbiology, 2013Co-Authors: Valentina Trinetta, R H Linton, Mark T MorganAbstract:Abstract The effects of high-concentration short-time chlorine dioxide (ClO 2 ) Gas Treatment on food-borne pathogens inoculated onto the surface of tomatoes, cantaloupes, and strawberries were studied. Produce were spot-inoculated with a mixture of Salmonella enterica (serotypes Montevideo , Javiana and Baildon ), Escherichia coli O157:H7 (serotypes 204 P , EDL 933 and C792 ) or Listeria monocytogenes (serotypes Scott A , F 5069 and LCDC 81-861 ), and treated with ClO 2 Gas at 10 mg/l for 180 s. After ClO 2 Gas Treatment, surviving populations were determined and shelf-life studies were conducted (microbial spoilage population, change in color and overall appearance). Significant microbial reduction ( p 2 Salmonella reduction was found on tomatoes, cantaloupe and strawberries, while a ∼3 Log CFU/cm 2 reduction was observed for E. coli and Listeria on all produce surfaces. E. coli and Listeria appeared to be more resistant to ClO 2 Gas as compared to Salmonella spp. Treatments significantly ( p p > 0.05). Results obtained suggest the potential use of high-concentration short-time ClO 2 Gas Treatment as an effective online pathogen inactivation technology for specialty crops in large-scale produce packing operations.
-
the application of high concentration short time chlorine dioxide Treatment for selected specialty crops including roma tomatoes lycopersicon esculentum cantaloupes cucumis melo ssp melo var cantaloupensis and strawberries fragaria ananassa
Food Microbiology, 2013Co-Authors: Valentina Trinetta, R H Linton, Mark T MorganAbstract:The effects of high-concentration short-time chlorine dioxide (ClO2) Gas Treatment on food-borne pathogens inoculated onto the surface of tomatoes, cantaloupes, and strawberries were studied. Produce were spot-inoculated with a mixture of Salmonella enterica (serotypes Montevideo, Javiana and Baildon), Escherichia coli O157:H7 (serotypes 204 P, EDL 933 and C792) or Listeria monocytogenes (serotypes Scott A, F 5069 and LCDC 81-861), and treated with ClO2 Gas at 10 mg/l for 180 s. After ClO2 Gas Treatment, surviving populations were determined and shelf-life studies were conducted (microbial spoilage population, change in color and overall appearance). Significant microbial reduction (p 0.05). Results obtained suggest the potential use of high-concentration short-time ClO2 Gas Treatment as an effective online pathogen inactivation technology for specialty crops in large-scale produce packing operations.
Valentina Trinetta - One of the best experts on this subject based on the ideXlab platform.
-
the application of high concentration short time chlorine dioxide Treatment for selected specialty crops including roma tomatoes lycopersicon esculentum cantaloupes cucumis melo ssp melo var cantaloupensis and strawberries fragaria ananassa
Food Microbiology, 2013Co-Authors: Valentina Trinetta, R H Linton, Mark T MorganAbstract:Abstract The effects of high-concentration short-time chlorine dioxide (ClO 2 ) Gas Treatment on food-borne pathogens inoculated onto the surface of tomatoes, cantaloupes, and strawberries were studied. Produce were spot-inoculated with a mixture of Salmonella enterica (serotypes Montevideo , Javiana and Baildon ), Escherichia coli O157:H7 (serotypes 204 P , EDL 933 and C792 ) or Listeria monocytogenes (serotypes Scott A , F 5069 and LCDC 81-861 ), and treated with ClO 2 Gas at 10 mg/l for 180 s. After ClO 2 Gas Treatment, surviving populations were determined and shelf-life studies were conducted (microbial spoilage population, change in color and overall appearance). Significant microbial reduction ( p 2 Salmonella reduction was found on tomatoes, cantaloupe and strawberries, while a ∼3 Log CFU/cm 2 reduction was observed for E. coli and Listeria on all produce surfaces. E. coli and Listeria appeared to be more resistant to ClO 2 Gas as compared to Salmonella spp. Treatments significantly ( p p > 0.05). Results obtained suggest the potential use of high-concentration short-time ClO 2 Gas Treatment as an effective online pathogen inactivation technology for specialty crops in large-scale produce packing operations.
-
the application of high concentration short time chlorine dioxide Treatment for selected specialty crops including roma tomatoes lycopersicon esculentum cantaloupes cucumis melo ssp melo var cantaloupensis and strawberries fragaria ananassa
Food Microbiology, 2013Co-Authors: Valentina Trinetta, R H Linton, Mark T MorganAbstract:The effects of high-concentration short-time chlorine dioxide (ClO2) Gas Treatment on food-borne pathogens inoculated onto the surface of tomatoes, cantaloupes, and strawberries were studied. Produce were spot-inoculated with a mixture of Salmonella enterica (serotypes Montevideo, Javiana and Baildon), Escherichia coli O157:H7 (serotypes 204 P, EDL 933 and C792) or Listeria monocytogenes (serotypes Scott A, F 5069 and LCDC 81-861), and treated with ClO2 Gas at 10 mg/l for 180 s. After ClO2 Gas Treatment, surviving populations were determined and shelf-life studies were conducted (microbial spoilage population, change in color and overall appearance). Significant microbial reduction (p 0.05). Results obtained suggest the potential use of high-concentration short-time ClO2 Gas Treatment as an effective online pathogen inactivation technology for specialty crops in large-scale produce packing operations.
R H Linton - One of the best experts on this subject based on the ideXlab platform.
-
the application of high concentration short time chlorine dioxide Treatment for selected specialty crops including roma tomatoes lycopersicon esculentum cantaloupes cucumis melo ssp melo var cantaloupensis and strawberries fragaria ananassa
Food Microbiology, 2013Co-Authors: Valentina Trinetta, R H Linton, Mark T MorganAbstract:The effects of high-concentration short-time chlorine dioxide (ClO2) Gas Treatment on food-borne pathogens inoculated onto the surface of tomatoes, cantaloupes, and strawberries were studied. Produce were spot-inoculated with a mixture of Salmonella enterica (serotypes Montevideo, Javiana and Baildon), Escherichia coli O157:H7 (serotypes 204 P, EDL 933 and C792) or Listeria monocytogenes (serotypes Scott A, F 5069 and LCDC 81-861), and treated with ClO2 Gas at 10 mg/l for 180 s. After ClO2 Gas Treatment, surviving populations were determined and shelf-life studies were conducted (microbial spoilage population, change in color and overall appearance). Significant microbial reduction (p 0.05). Results obtained suggest the potential use of high-concentration short-time ClO2 Gas Treatment as an effective online pathogen inactivation technology for specialty crops in large-scale produce packing operations.
-
the application of high concentration short time chlorine dioxide Treatment for selected specialty crops including roma tomatoes lycopersicon esculentum cantaloupes cucumis melo ssp melo var cantaloupensis and strawberries fragaria ananassa
Food Microbiology, 2013Co-Authors: Valentina Trinetta, R H Linton, Mark T MorganAbstract:Abstract The effects of high-concentration short-time chlorine dioxide (ClO 2 ) Gas Treatment on food-borne pathogens inoculated onto the surface of tomatoes, cantaloupes, and strawberries were studied. Produce were spot-inoculated with a mixture of Salmonella enterica (serotypes Montevideo , Javiana and Baildon ), Escherichia coli O157:H7 (serotypes 204 P , EDL 933 and C792 ) or Listeria monocytogenes (serotypes Scott A , F 5069 and LCDC 81-861 ), and treated with ClO 2 Gas at 10 mg/l for 180 s. After ClO 2 Gas Treatment, surviving populations were determined and shelf-life studies were conducted (microbial spoilage population, change in color and overall appearance). Significant microbial reduction ( p 2 Salmonella reduction was found on tomatoes, cantaloupe and strawberries, while a ∼3 Log CFU/cm 2 reduction was observed for E. coli and Listeria on all produce surfaces. E. coli and Listeria appeared to be more resistant to ClO 2 Gas as compared to Salmonella spp. Treatments significantly ( p p > 0.05). Results obtained suggest the potential use of high-concentration short-time ClO 2 Gas Treatment as an effective online pathogen inactivation technology for specialty crops in large-scale produce packing operations.
-
decontamination of strawberries using batch and continuous chlorine dioxide Gas Treatments
Journal of Food Protection, 2004Co-Authors: T L Selby, K K Schultze, Philip E Nelson, R H LintonAbstract:Efficacy of chlorine dioxide (ClO2) Gas in reducing Escherichia coli O157:H7 and Listeria monocytogenes on strawberries was determined using batch and continuous flow ClO2 Gas Treatment systems. Effects of continuous ClO2 Gas Treatment on total aerobic plate count, color, and residual ClO2 and chlorite on strawberries were also evaluated. Strawberries were spot inoculated with 7 to 8 log CFU per strawberry of each pathogen (E. coli O157:H7 and L. monocytogenes), stored for 1 day at 4°C, and treated at 22°C and 90 to 95% relative humidity with 0.2 to 4.0 mg/liter ClO2 Gas for 15 or 30 min using a batch Treatment system or with 0.6, 1.8, and 3.0 mg/liter for 10 min using a continuous Treatment system. Surviving microbial populations were determined using a membrane-transfer plating recovery method. Increased ClO2 Gas concentrations resulted in increased log reductions of each pathogen for both the batch and continuous systems. A batch Treatment of strawberries with 4 mg/liter ClO2 for 30 min and continuous ...
-
decontamination of bacillus thuringiensis spores on selected surfaces by chlorine dioxide Gas
Journal of Environmental Health, 2003Co-Authors: Y Han, R H Linton, Bruce M Applegate, Philip E NelsonAbstract:This work examined the efficacy of chlorine dioxide (ClO2) Gas for the decontamination of Bacillus thuringiensis spores on paper, wood, epoxy, and plastic surfaces. Spores representing an inoculation level of approximately 6 log colony-forming units (CFU) per surface were treated with 5, 10, 15, 20, 25, or 30 milligrams per liter (mg/L) ClO2 Gas for 12 hours under 85-92 percent relative humidity and at 22 +/- 1 degrees C. Under the tested Treatment conditions, the highest population of surviving spores was found on the paper surface and the lowest was found on the plastic surface (p < .05). The 5 mg/L ClO2 Gas Treatment inactivated 2.5, 3.6, 4.0, and 4.9 log spores per surface on paper, wood, epoxy, and plastic surfaces, respectively. A greater than 5-log reduction of spores was achieved on each surface after the 15 mg/L ClO2 Gas Treatment. The minimum ClO2 Gas concentration needed to completely inactivate the inoculated spores was 30 mg/L for paper and wood surfaces, 25 mg/L for epoxy surfaces, and 20 mg/L for plastic surfaces. The results of this study may provide insight into the parameters of effective decontamination procedures for Bacillus spores.
Gilberto Teobaldi - One of the best experts on this subject based on the ideXlab platform.
-
density functional theory screening of Gas Treatment strategies for stabilization of high energy density lithium metal anodes
Journal of Power Sources, 2015Co-Authors: Stephan L Koch, Benjamin J Morgan, Stefano Passerini, Gilberto TeobaldiAbstract:Abstract To explore the potential of molecular Gas Treatment of freshly cut lithium foils in non-electrolyte-based passivation of high-energy-density Li anodes, density functional theory (DFT) has been used to study the decomposition of molecular Gases on metallic lithium surfaces. By combining DFT geometry optimization and Molecular Dynamics, the effects of atmospheric (N2, O2, CO2) and hazardous (F2, SO2) Gas decomposition on Li(bcc) (100), (110), and (111) surfaces on relative surface energies, work functions, and emerging electronic and elastic properties are investigated. The simulations suggest that exposure to different molecular Gases can be used to induce and control reconstructions of the metal Li surface and substantial changes (up to over 1 eV) in the work function of the passivated system. Contrary to the other considered Gases, which form metallic adlayers, SO2 Treatment emerges as the most effective in creating an insulating passivation layer for dosages ≤1 mono-layer. The substantial Li → adsorbate charge transfer and adlayer relaxation produce marked elastic stiffening of the interface, with the smallest change shown by nitrogen-treated adlayers.
-
density functional theory screening of Gas Treatment strategies for stabilization of high energy density lithium metal anodes
arXiv: Materials Science, 2015Co-Authors: Stephan L Koch, Benjamin J Morgan, Stefano Passerini, Gilberto TeobaldiAbstract:To explore the potential of molecular Gas Treatment of freshly cut lithium foils in non-electrolyte based passivation of high energy-density Li anodes, density functional theory (DFT) has been used to study the decomposition of molecular Gases on metallic lithium surfaces. By combining DFT geometry optimization and Molecular Dynamics, the effects of atmospheric (N2, O2, CO2) and hazardous (F2, SO2) Gas decomposition on Li(bcc) (100), (110), and (111) surfaces on relative surface energies, work functions, and emerging electronic and elastic properties are investigated. The simulations suggest that exposure to different molecular Gases can be used to induce and control reconstructions of the metal Li surface and substantial changes (up to over 1 eV) in the work function of the passivated system. Contrary to the other considered Gases, which form metallic adlayers, SO2 Treatment emerges as the most effective in creating an insulating passivation layer for dosages adsorbate charge transfer and adlayer relaxation produce marked elastic stiffening of the interface, with the smallest change shown by nitrogen-treated adlayers.
Zbigniew Zimek - One of the best experts on this subject based on the ideXlab platform.
-
A review on electron beam flue Gas Treatment (EBFGT) as a multicomponent air pollution control technology
Nukleonika, 2010Co-Authors: Ahmed Ali Basfar, Andrzej G. Chmielewski, Zbigniew Zimek, Janusz Licki, Andrzej Pawelec, Osama I Fageeha, Noushad Kunnummal, Jerzy WarychAbstract:Electron beam flue Gas Treatment (EBFGT) technology for coal-fired boilers has been implemented on an industrial scale in two thermal power plants in China and at the Electropower Station (EPS) Pomorzany in Poland. The plants in China have been designed mainly for desulfurization while the plant in Poland for a simultaneous removal of SO2 and NOx from flue Gases. The successful operation of these plants has demonstrated the advantages of using this technology for removing SO2 and NOx from flue Gas under varying conditions. At present, the plant in Poland is the only operational installation at an international level. Recent tests performed at an EBFGT industrial pilot plant in Bulgaria have demonstrated feasibility of application of this technology for Treatment of high sulfur and high humidity lignite fired boilers. Further laboratory tests have been performed for model flue Gases similar to those emitted from a copper smelter and flue Gases originated from different types of high sulfur heavy fuel oils. In all cases, dry-scrubbing process with ammonia addition has been tested. The removal efficiency of pollutants is as high as 95% for SO2 and 70-80% for NOx. The by-product of this process is a high quality fertilizer component. Additional laboratory studies have shown that volatile organic compounds (VOCs) emitted during combustion of fossil fuels, can be degraded as well. Therefore, EBFGT can be considered as a multicomponent air pollution control technology which can be applied to flue Gases Treatment from coal, lignite and heavy fuel oil-fired boilers. Other thermal processes like metallurgy and municipal waste incinerators are potential candidates for EBFGT technology application.
-
electron beam flue Gas Treatment ebfgt technology for simultaneous removal of so2 and nox from combustion of liquid fuels
Fuel, 2008Co-Authors: Ahmed Ali Asfa, Andrzej G. Chmielewski, Janusz Licki, Andrzej Pawelec, Osama I Fageeha, Noushad Kunnummal, Seraj Alghamdi, Zbigniew ZimekAbstract:Abstract Electron beam flue Gas Treatment technology was applied for removal of SO 2 and NO x from flue Gas, emitted from combustion of high-sulfur fuel oils. The detailed study of this process was performed in a laboratory by irradiating the exhaust Gas from the combustion of three grades of Arabian fuels with an electron beam from accelerator (800 keV, max. beam power 20 kW). SO 2 removal is mainly dependent on ammonia stoichiometry, flue Gas temperature and humidity and irradiation doses up to 8 kGy. NO x removal depends primarily on irradiation dose. High removal efficiencies up to 98% for SO 2 and up to 82% for NO x were obtained under optimal conditions. The flue Gas emitted from combustion of high-sulfur fuel oils, after electron beam irradiation, meets the stringent emission standards for both pollutants. The by-product, which is a mixture of ammonium sulphate and nitrate, can be used as a fertilizer as such or blended with other components to produce commercial agricultural fertilizer.
-
operational experience of the industrial plant for electron beam flue Gas Treatment
Radiation Physics and Chemistry, 2004Co-Authors: Andrzej G. Chmielewski, Janusz Licki, Andrzej Pawelec, Zbigniew ZimekAbstract:Abstract Electron beam flue Gas Treatment technology is one of the most advanced technologies among new generation processes for air pollution control. The process, which has been developed in Japan, the United States, Germany and Poland allows simultaneous removal of SO 2 and NO x with high efficiency and by-product generated can be applied as fertilizer. Two industrial installations using this technology have been constructed in the world, one in China and the second in Poland. Other plants are constructed in Japan and China. Chinese installation is mostly SO 2 removal oriented (since the NO x emission limits in China are not imposed up to now), so Polish plant one is as a matter of fact the first installation for simultaneous desulfurization and denitrification of flue Gases. The plant located in EPS Pomorzany in Szczecin treats the flue Gases emitted from two Benson boilers of 65 MW e and 100 MW th each. The flue Gases of maximum flow of 270 000 N m 3 /h are irradiated by four accelerators of 700 keV electron energy and 260 kW beam power each. Description of the plant and the results obtained have been presented in this paper. The plant has been in operation for more than 2500 h (5500 h including one accelerator set operation). Removal efficiencies up to 95% for SO 2 and up to 70% for NO x were achieved. Several thousand tons of the by-product was sold in the form of NPK fertilizer. Economically, the technology is competitive with the conventional ones.
-
pilot plant for flue Gas Treatment with electron beam start up and two stage irradiation tests
Radiation Physics and Chemistry, 1993Co-Authors: Andrzej G. Chmielewski, Zbigniew Zimek, Janusz Licki, Edward Ille, Andrzej DobrowolskiAbstract:Abstract The pilot plant for flue Gas Treatment with electron beam has been built at Power Plant Kaweczyn, near Warsaw. The irradiation part of the pilot plant has been put in operation in 1991 whereas the complete installation including bag filter started to work in spring 1992. The starting tests consisted of studying the components reliability and influence of the two-stage irradiation process on efficiency of NO x removal. The results have shown that the two- stage irradiation leads to remarkable energy savings and retains high NO x removal. The mathematical models of the double and triple irradiation process are discussed.
-
pilot plant for electron beam flue Gas Treatment
International Journal of Radiation Applications and Instrumentation. Part C. Radiation Physics and Chemistry, 1992Co-Authors: Andrzej G. Chmielewski, Zbigniew Zimek, Edward Ille, Janusz LickiAbstract:Double stage Gas irradiation (2 electron accelerators, 50 kW700 keV each) is the main technological principle employed in the Polish pilot plant (20,000 Nm3/h) constructed at EPS Kawȩczyn (low/medium sulphur coal). The pilot plant design is described in the paper.
