Pub Date : 1996-09-01DOI: 10.1002/(SICI)1097-4660(199609)67:1<61::AID-JCTB529>3.3.CO;2-W
C. Pieck, M. R. Sad, J. Parera
{"title":"Chlorination ofPtReAl2O3 During Naphtha Reforming","authors":"C. Pieck, M. R. Sad, J. Parera","doi":"10.1002/(SICI)1097-4660(199609)67:1<61::AID-JCTB529>3.3.CO;2-W","DOIUrl":"https://doi.org/10.1002/(SICI)1097-4660(199609)67:1<61::AID-JCTB529>3.3.CO;2-W","url":null,"abstract":"","PeriodicalId":15303,"journal":{"name":"Journal of Chemical Technology & Biotechnology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86735302","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}
Pub Date : 1996-08-01DOI: 10.1002/(SICI)1097-4660(199608)66:4<414::AID-JCTB516>3.0.CO;2-#
N. Zouari, R. Ellouz
Anaerobic sludge digestion of olive oil mill effluent (OOME) in Upflow Anaerobic Sludge Blanket (UASB) reactors was shown to be unstable as a result of both chemical and biological parameters. The study was complicated by the fact that Chemical Oxygen Demand (COD) was removed by growth and maintenance of active biomass and by adsorption in and on the sludge. Coloured compounds caused an inhibition effect on the anaerobic digestion of the wastewater. This inhibition, shown at low COD concentrations of diluted OOME, was due to accumulation of recalcitrant coloured compounds in the sludge, inducing irreversible inhibition of bacterial growth. Partial decolourization of OOME through resin (Duolite XAD 761) treatment reduced the toxic effect.
{"title":"Toxic effect of coloured olive compounds on the anaerobic digestion of olive oil mill effluent in UASB-like reactors","authors":"N. Zouari, R. Ellouz","doi":"10.1002/(SICI)1097-4660(199608)66:4<414::AID-JCTB516>3.0.CO;2-#","DOIUrl":"https://doi.org/10.1002/(SICI)1097-4660(199608)66:4<414::AID-JCTB516>3.0.CO;2-#","url":null,"abstract":"Anaerobic sludge digestion of olive oil mill effluent (OOME) in Upflow Anaerobic Sludge Blanket (UASB) reactors was shown to be unstable as a result of both chemical and biological parameters. The study was complicated by the fact that Chemical Oxygen Demand (COD) was removed by growth and maintenance of active biomass and by adsorption in and on the sludge. Coloured compounds caused an inhibition effect on the anaerobic digestion of the wastewater. This inhibition, shown at low COD concentrations of diluted OOME, was due to accumulation of recalcitrant coloured compounds in the sludge, inducing irreversible inhibition of bacterial growth. Partial decolourization of OOME through resin (Duolite XAD 761) treatment reduced the toxic effect.","PeriodicalId":15303,"journal":{"name":"Journal of Chemical Technology & Biotechnology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86431175","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}
Pub Date : 1996-07-01DOI: 10.1002/(SICI)1097-4660(199607)66:3<265::AID-JCTB503>3.0.CO;2-#
M. T. Shieh, P. E. Barker
The hydrolysis of lactose using the enzyme lactase from Aspergillus oryzae and the simultaneous separation of the products galactose and glucose was examined in a Simulated Counter-Current Chromatographic Bioreactor-Separator (SCCR-S) system. The system was operated in continuous and batch modes and the results obtained used to compare the performance in both modes. Mathematical modelling and computer simulation of the system operating in the continuous mode are reported.
{"title":"Combined bioreaction and separation in a simulated counter-current chromatographic bioreactor-separator for the hydrolysis of lactose","authors":"M. T. Shieh, P. E. Barker","doi":"10.1002/(SICI)1097-4660(199607)66:3<265::AID-JCTB503>3.0.CO;2-#","DOIUrl":"https://doi.org/10.1002/(SICI)1097-4660(199607)66:3<265::AID-JCTB503>3.0.CO;2-#","url":null,"abstract":"The hydrolysis of lactose using the enzyme lactase from Aspergillus oryzae and the simultaneous separation of the products galactose and glucose was examined in a Simulated Counter-Current Chromatographic Bioreactor-Separator (SCCR-S) system. The system was operated in continuous and batch modes and the results obtained used to compare the performance in both modes. Mathematical modelling and computer simulation of the system operating in the continuous mode are reported.","PeriodicalId":15303,"journal":{"name":"Journal of Chemical Technology & Biotechnology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84040949","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}
Pub Date : 1996-07-01DOI: 10.1002/(SICI)1097-4660(199607)66:3<323::AID-JCTB1497>3.3.CO;2-J
A. Wiseman
{"title":"Book Review Introduction to biocatalysis using enzymes and microorganisms","authors":"A. Wiseman","doi":"10.1002/(SICI)1097-4660(199607)66:3<323::AID-JCTB1497>3.3.CO;2-J","DOIUrl":"https://doi.org/10.1002/(SICI)1097-4660(199607)66:3<323::AID-JCTB1497>3.3.CO;2-J","url":null,"abstract":"","PeriodicalId":15303,"journal":{"name":"Journal of Chemical Technology & Biotechnology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78913758","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}
Pub Date : 1996-06-01DOI: 10.1002/(SICI)1097-4660(199606)66:2<206::AID-JCTB498>3.0.CO;2-#
J. Beltrán-Heredia, F. Benítez, T. González, J. L. Acero, B. Rodriguez
The photolytic decomposition of the herbicide Bentazone (3-isopropyl-1H-2,1,3-benzothiadiazin-4-3H-one 2,2 dioxide) has been conducted by direct polychromatic UV radiation, and by the combination of that UV radiation with hydrogen peroxide. The experiments were performed at various temperatures and pH values, and the initial hydrogen peroxide concentration in the combined process was also varied. An Emission Model was used to evaluate the radiation flow rate absorbed by the reacting medium for each reaction time. From simple mechanisms, the rate equations for both processes were obtained. The application of the experimental data to those equations allows one to determine the quantum yields for the direct photolysis, and the kinetic constants for the reaction between Bentazone and the hydroxyl radicals generated in the combined photolysis.
{"title":"Photolytic decomposition of bentazone","authors":"J. Beltrán-Heredia, F. Benítez, T. González, J. L. Acero, B. Rodriguez","doi":"10.1002/(SICI)1097-4660(199606)66:2<206::AID-JCTB498>3.0.CO;2-#","DOIUrl":"https://doi.org/10.1002/(SICI)1097-4660(199606)66:2<206::AID-JCTB498>3.0.CO;2-#","url":null,"abstract":"The photolytic decomposition of the herbicide Bentazone (3-isopropyl-1H-2,1,3-benzothiadiazin-4-3H-one 2,2 dioxide) has been conducted by direct polychromatic UV radiation, and by the combination of that UV radiation with hydrogen peroxide. The experiments were performed at various temperatures and pH values, and the initial hydrogen peroxide concentration in the combined process was also varied. An Emission Model was used to evaluate the radiation flow rate absorbed by the reacting medium for each reaction time. From simple mechanisms, the rate equations for both processes were obtained. The application of the experimental data to those equations allows one to determine the quantum yields for the direct photolysis, and the kinetic constants for the reaction between Bentazone and the hydroxyl radicals generated in the combined photolysis.","PeriodicalId":15303,"journal":{"name":"Journal of Chemical Technology & Biotechnology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90607200","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}
Pub Date : 1996-04-01DOI: 10.1002/(SICI)1097-4660(199604)65:4<388::AID-JCTB423>3.0.CO;2-#
C. Guizard
{"title":"SCI colloid and surface chemistry group meeting: Membrane separation and transport processes in liquid media","authors":"C. Guizard","doi":"10.1002/(SICI)1097-4660(199604)65:4<388::AID-JCTB423>3.0.CO;2-#","DOIUrl":"https://doi.org/10.1002/(SICI)1097-4660(199604)65:4<388::AID-JCTB423>3.0.CO;2-#","url":null,"abstract":"","PeriodicalId":15303,"journal":{"name":"Journal of Chemical Technology & Biotechnology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79384882","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}
Pub Date : 1996-03-01DOI: 10.1002/(SICI)1097-4660(199603)65:3<272::AID-JCTB418>3.0.CO;2-#
J. L. Mier, A. Ballester, F. González, M. Blazquez, E. Gomez
The influence of several metallic ions on Sulfolobus BC activity was examined. The maximum tolerance to increasing quantities of metal in cultures grown on copper concentrate was determined after a period of progressive adaptation. In addition, the influence of several metal concentrations on the capacity of the microorganisms to oxidize ferrous iron and sulphur was studied individually. In all cases silver, mercury, ruthenium and molybdenum inhibited bacterial growth. The use of adapted microorganisms led to an increase in the oxidation rate of both substrates, which was related to bacterial activity.
{"title":"The influence of metallic ions on the activity of Sulfolobus BC","authors":"J. L. Mier, A. Ballester, F. González, M. Blazquez, E. Gomez","doi":"10.1002/(SICI)1097-4660(199603)65:3<272::AID-JCTB418>3.0.CO;2-#","DOIUrl":"https://doi.org/10.1002/(SICI)1097-4660(199603)65:3<272::AID-JCTB418>3.0.CO;2-#","url":null,"abstract":"The influence of several metallic ions on Sulfolobus BC activity was examined. The maximum tolerance to increasing quantities of metal in cultures grown on copper concentrate was determined after a period of progressive adaptation. In addition, the influence of several metal concentrations on the capacity of the microorganisms to oxidize ferrous iron and sulphur was studied individually. In all cases silver, mercury, ruthenium and molybdenum inhibited bacterial growth. The use of adapted microorganisms led to an increase in the oxidation rate of both substrates, which was related to bacterial activity.","PeriodicalId":15303,"journal":{"name":"Journal of Chemical Technology & Biotechnology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79807268","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}
Pub Date : 1996-03-01DOI: 10.1002/(SICI)1097-4660(199603)65:3<293::AID-JCTB2408>3.0.CO;2-#
T. Lynch
{"title":"An Introduction to Supercritical Fluids with Illustrations from the petroleum and Chemical Industries","authors":"T. Lynch","doi":"10.1002/(SICI)1097-4660(199603)65:3<293::AID-JCTB2408>3.0.CO;2-#","DOIUrl":"https://doi.org/10.1002/(SICI)1097-4660(199603)65:3<293::AID-JCTB2408>3.0.CO;2-#","url":null,"abstract":"","PeriodicalId":15303,"journal":{"name":"Journal of Chemical Technology & Biotechnology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85026014","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}
Pub Date : 1996-01-01DOI: 10.1002/(sici)1097-4660(199606)66:2<139::aid-jctb480>3.3.co;2-4
V. Kanamarlapudi
{"title":"Investigation of Cytochrome P450 Mediated Benzo(a)pyrene Hydroxylation in Aspergillus fumigatus","authors":"V. Kanamarlapudi","doi":"10.1002/(sici)1097-4660(199606)66:2<139::aid-jctb480>3.3.co;2-4","DOIUrl":"https://doi.org/10.1002/(sici)1097-4660(199606)66:2<139::aid-jctb480>3.3.co;2-4","url":null,"abstract":"","PeriodicalId":15303,"journal":{"name":"Journal of Chemical Technology & Biotechnology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1996-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89472443","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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