Résultat de la recherche
15 recherche sur le tag
'Biodegradation' 
Affiner la recherche Générer le flux rss de la recherche
Partager le résultat de cette recherche Interroger des sources externesEtude et synthèse de composés tensioactifs à base de souches naturelles et obtention de détergents industriels biodégradables / Abdelghani Chaterbache
Titre : Etude et synthèse de composés tensioactifs à base de souches naturelles et obtention de détergents industriels biodégradables Type de document : texte imprimé Auteurs : Abdelghani Chaterbache ; Univ. de Constantine, Éditeur scientifique ; Abdelkrim Haouam, Directeur de thèse Année de publication : 2007 Importance : 63 f. Note générale : 01 Disponible à la salle de recherche 02 Disponibles au magazin de la B.U.C. 01 CD Langues : Français (fre) Catégories : Français - Anglais
ChimieTags : Biodégradation Détergent Savon Chimie du savon Estérification Index. décimale : 540 Chimie et sciences connexes En ligne : ../theses/chimie/CHA4783.pdf Permalink : index.php?lvl=notice_display&id=3743 Etude et synthèse de composés tensioactifs à base de souches naturelles et obtention de détergents industriels biodégradables [texte imprimé] / Abdelghani Chaterbache ; Univ. de Constantine, Éditeur scientifique ; Abdelkrim Haouam, Directeur de thèse . - 2007 . - 63 f.
01 Disponible à la salle de recherche 02 Disponibles au magazin de la B.U.C. 01 CD
Langues : Français (fre)
Catégories : Français - Anglais
ChimieTags : Biodégradation Détergent Savon Chimie du savon Estérification Index. décimale : 540 Chimie et sciences connexes En ligne : ../theses/chimie/CHA4783.pdf Permalink : index.php?lvl=notice_display&id=3743 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité CHA/4783 CHA/4783 Thèse Bibliothèque principale Thèses Disponible
Titre : Biodégradation de quelques composés organiques volatils et certains pesticides par des actinomycètes provenant d’un sol agricole et de boues activées. Type de document : texte imprimé Auteurs : Amira Hocinat, Auteur ; Hocine Ali Khodja, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2018 Importance : 190 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles. Langues : Français (fre) Catégories : Français - Anglais
BiologieTags : Actinobactéries Biodégradation BTEX Pesticides boues activées sol agricole Actinobacteria Biodegradation activated sludge agricultural soil أكتینوبكتیریا التحلل البیولوجي بتكس المبیدات الحمأة المنشطة التربة الزراعیة Index. décimale : 570 Sciences de la vie. Biologie Résumé : From an agricultural soil sample from the region of Ain M'Lila and a sample of activated sludge from the Ibn Ziad-Constantine wastewater treatment plant, we isolated respectively 80 and 18 phenotypically different actinobacteria. The samples in question were the subject of a physic-chemical analysis. Firstly, we conducted a functional study by testing these isolates on a minimum solid medium supplemented with 500 mg/L of different pesticides most commonly used in Algeria, namely the Ortiva and Rodazime fungicides. Insecticides like Karate, Phoenix, Dursban and Cypermethrin.
Herbicides in several commercial forms such as Mamba, Zoom, Glyphosate, Herbasate, Roundup, Traxos and Axial to characterize their abilities to use these pesticides as the sole source of carbon and energy. The results showed that the majority of isolates had the ability to degrade these synthetic compounds. Thus, in this thesis work, we have been interested in testing the ability of these isolates to degrade BTEX, which is an important family of volatile organic compounds. They contaminate various ecosystems such as air, surface water, groundwater and soil. These compounds have very toxic effects on humans and animals. Several microorganisms have been tested for their ability to degrade BTEX. Others have unfortunately been neglected despite their interesting metabolic and physiological aptitudes. In the present study, we tested the degradation of these compounds by isolated
actinomycetes taken individually or in consortia. The results of growth and degradation kinetics showed that 20 actinobacteria and 2 reconstituted consortia were able to use at least one BTEX compound as the sole source of carbon and energy. Of these, four from activated sludge and one from agricultural soils degraded all these volatile organic compounds in vitro under aerobic conditions at concentrations ranging from 1400 to 1500 mg/L in 72 to 96 h of incubation. The second part of this work aimed to identify active isolates. The physiological study informed us about the remarkable metabolic diversity of the isolates tested. In addition, a taxonomic study was conducted by sequencing 16S rRNA of 25 strains. This identification showed that twenty-one of these isolates belonged to the genus Streptomyces and three to the genus Nocardia. This result is very encouraging and shows that actinomycetes that come from sewage treatment plants and agricultural soils have the ability to
biodegrade these organic volatil compounds and pesticides. The isolated strains are excellent candidates for bioremedion of terrestrial and aquatic sites polluted by these xenobiotics.
Diplôme : Doctorat En ligne : ../theses/biologie/HOC7202.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10761 Biodégradation de quelques composés organiques volatils et certains pesticides par des actinomycètes provenant d’un sol agricole et de boues activées. [texte imprimé] / Amira Hocinat, Auteur ; Hocine Ali Khodja, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2018 . - 190 f. ; 30 cm.
2 copies imprimées disponibles.
Langues : Français (fre)
Catégories : Français - Anglais
BiologieTags : Actinobactéries Biodégradation BTEX Pesticides boues activées sol agricole Actinobacteria Biodegradation activated sludge agricultural soil أكتینوبكتیریا التحلل البیولوجي بتكس المبیدات الحمأة المنشطة التربة الزراعیة Index. décimale : 570 Sciences de la vie. Biologie Résumé : From an agricultural soil sample from the region of Ain M'Lila and a sample of activated sludge from the Ibn Ziad-Constantine wastewater treatment plant, we isolated respectively 80 and 18 phenotypically different actinobacteria. The samples in question were the subject of a physic-chemical analysis. Firstly, we conducted a functional study by testing these isolates on a minimum solid medium supplemented with 500 mg/L of different pesticides most commonly used in Algeria, namely the Ortiva and Rodazime fungicides. Insecticides like Karate, Phoenix, Dursban and Cypermethrin.
Herbicides in several commercial forms such as Mamba, Zoom, Glyphosate, Herbasate, Roundup, Traxos and Axial to characterize their abilities to use these pesticides as the sole source of carbon and energy. The results showed that the majority of isolates had the ability to degrade these synthetic compounds. Thus, in this thesis work, we have been interested in testing the ability of these isolates to degrade BTEX, which is an important family of volatile organic compounds. They contaminate various ecosystems such as air, surface water, groundwater and soil. These compounds have very toxic effects on humans and animals. Several microorganisms have been tested for their ability to degrade BTEX. Others have unfortunately been neglected despite their interesting metabolic and physiological aptitudes. In the present study, we tested the degradation of these compounds by isolated
actinomycetes taken individually or in consortia. The results of growth and degradation kinetics showed that 20 actinobacteria and 2 reconstituted consortia were able to use at least one BTEX compound as the sole source of carbon and energy. Of these, four from activated sludge and one from agricultural soils degraded all these volatile organic compounds in vitro under aerobic conditions at concentrations ranging from 1400 to 1500 mg/L in 72 to 96 h of incubation. The second part of this work aimed to identify active isolates. The physiological study informed us about the remarkable metabolic diversity of the isolates tested. In addition, a taxonomic study was conducted by sequencing 16S rRNA of 25 strains. This identification showed that twenty-one of these isolates belonged to the genus Streptomyces and three to the genus Nocardia. This result is very encouraging and shows that actinomycetes that come from sewage treatment plants and agricultural soils have the ability to
biodegrade these organic volatil compounds and pesticides. The isolated strains are excellent candidates for bioremedion of terrestrial and aquatic sites polluted by these xenobiotics.
Diplôme : Doctorat En ligne : ../theses/biologie/HOC7202.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10761 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité HOC/7202 HOC/7202 Thèse Bibliothèque principale Thèses Disponible
Titre : Contribution à l’étude de la biodégradation de la méthyléthylcétone en réacteur batch par les actinomycètes isolés à partir des boues activées de la station d’épuration d’El-Atmania. Type de document : texte imprimé Auteurs : Soumaya Silini, Auteur ; Allaoueddine Boudemagh, Directeur de thèse Mention d'édition : 23-04-2012 Editeur : Constantine : Université Mentouri Constantine Année de publication : 2012 Importance : 111 f. Format : 31 cm. Note générale : 2 copies imprimées disponibles Langues : Français (fre) Catégories : Français - Anglais
BiologieTags : Biologie Végétale et Écologie :Écologie Gestion des déchets: Évaluation et solutions environnementales Actinomycètes biodégradation méthyléthylcétone boues activées biodépollution Actinomycetes biodegradation methyl ethyl ketone activated sludge biodepollution أكتینومیسات التحلل البیولوجي المیتیل ایتیل سیتون الأوحال المنشطة المعالجة البیولوجیة Index. décimale : 570 Sciences de la vie. Biologie Résumé : Industrial wastes pose major problems because of their diversity and composition. Among these wastes, some are toxic to humans and affect the environment. This is the case of methyl ethyl ketone which is a highly volatile organic compound. This VOC is widely used as a solvent in the composition of paints, varnishes, inks, glues and adhesives (particularly vinylics, nitrocellulosics or acrylics). It also serves as an extraction agent of certain vegetable and mineral oils. We usually use some physico-chemical techniques for the destruction of this pollutant such as incineration for example. These techniques are expensive and have some disadvantages. Today we are witnessing the development of biological techniques implementing microoganismes, able to completely biodegrade these wastes. In our study, we isolated in ISP4 medium, 7 strains similar to actinomycetes from activated sludge of the wastewater treatment plant of El-Athmania. Many of them have the ability to biodegrade the methyl ethyl ketone. The strain called A5.7 was the most efficient among the tested actinomycetes. This strain is able to degrade 100% of this compound after 72 hours or three days of fermentation in batch. Its maximum growth rate (μmax) is the highest, it is 0.132 h-1. This isolate was identified by several morphological methods and methods of cultivation as belonging to the genus Streptomyces. Note de contenu : Annexes. Diplôme : Magistère En ligne : ../theses/biologie/SIL6168.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=6085 Contribution à l’étude de la biodégradation de la méthyléthylcétone en réacteur batch par les actinomycètes isolés à partir des boues activées de la station d’épuration d’El-Atmania. [texte imprimé] / Soumaya Silini, Auteur ; Allaoueddine Boudemagh, Directeur de thèse . - 23-04-2012 . - Constantine : Université Mentouri Constantine, 2012 . - 111 f. ; 31 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
BiologieTags : Biologie Végétale et Écologie :Écologie Gestion des déchets: Évaluation et solutions environnementales Actinomycètes biodégradation méthyléthylcétone boues activées biodépollution Actinomycetes biodegradation methyl ethyl ketone activated sludge biodepollution أكتینومیسات التحلل البیولوجي المیتیل ایتیل سیتون الأوحال المنشطة المعالجة البیولوجیة Index. décimale : 570 Sciences de la vie. Biologie Résumé : Industrial wastes pose major problems because of their diversity and composition. Among these wastes, some are toxic to humans and affect the environment. This is the case of methyl ethyl ketone which is a highly volatile organic compound. This VOC is widely used as a solvent in the composition of paints, varnishes, inks, glues and adhesives (particularly vinylics, nitrocellulosics or acrylics). It also serves as an extraction agent of certain vegetable and mineral oils. We usually use some physico-chemical techniques for the destruction of this pollutant such as incineration for example. These techniques are expensive and have some disadvantages. Today we are witnessing the development of biological techniques implementing microoganismes, able to completely biodegrade these wastes. In our study, we isolated in ISP4 medium, 7 strains similar to actinomycetes from activated sludge of the wastewater treatment plant of El-Athmania. Many of them have the ability to biodegrade the methyl ethyl ketone. The strain called A5.7 was the most efficient among the tested actinomycetes. This strain is able to degrade 100% of this compound after 72 hours or three days of fermentation in batch. Its maximum growth rate (μmax) is the highest, it is 0.132 h-1. This isolate was identified by several morphological methods and methods of cultivation as belonging to the genus Streptomyces. Note de contenu : Annexes. Diplôme : Magistère En ligne : ../theses/biologie/SIL6168.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=6085 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité SIL/6168 SIL/6168 Thèse Bibliothèque principale Thèses Disponible
Titre : Biodégradation du MEK en réacteur Batch : influence de la présence d'acétone et des conditions DI culture initiales Type de document : texte imprimé Auteurs : Ahmed Terrouche ; Univ. de Constantine, Éditeur scientifique ; M.H. Ali-Khodja, Directeur de thèse Année de publication : 2009 Importance : 93 f. Note générale : 01 Disponible à la salle de recherche 02 Disponibles au magazin de la B.U.C. 01 CD Langues : Français (fre) Catégories : Français - Anglais
ChimieTags : Modélisation Biodégradation Méthyléthylcétone COV Mulieu nutritif methylethylketone biodegradation modeling nutritive medium المثیل إثیل كیتون التحلل البیولوجي بالمركبات العضویة المتطایرة Index. décimale : 540 Chimie et sciences connexes Résumé : Pollution from VOCs is the subject of numerous treatment studies; however, the
biotreatment of VOCs has been considered only recently. The study that we conducted
showed the effective degradation of methylethylketone in a batch reactor by using a mixed
culture of microorganisms taken from the aeration tanks of biological treatment plant of El
Menia Constantine. The study was carried out at 35 ° C.
This work involves both the study of the kinetics of growth characteristics of
microorganisms and of the biodegradation of the pollutants. We also examined the
influence of a number of operating parameters such as:
The initial concentration of biomass
The initial concentration of MEK on the rate of substrate degradation and the yield
of substrate conversion into biomass and
The influence of the presence of acetone as a second source of carbon.Diplôme : Magistère En ligne : ../theses/chimie/TER5422.pdf Permalink : index.php?lvl=notice_display&id=3782 Biodégradation du MEK en réacteur Batch : influence de la présence d'acétone et des conditions DI culture initiales [texte imprimé] / Ahmed Terrouche ; Univ. de Constantine, Éditeur scientifique ; M.H. Ali-Khodja, Directeur de thèse . - 2009 . - 93 f.
01 Disponible à la salle de recherche 02 Disponibles au magazin de la B.U.C. 01 CD
Langues : Français (fre)
Catégories : Français - Anglais
ChimieTags : Modélisation Biodégradation Méthyléthylcétone COV Mulieu nutritif methylethylketone biodegradation modeling nutritive medium المثیل إثیل كیتون التحلل البیولوجي بالمركبات العضویة المتطایرة Index. décimale : 540 Chimie et sciences connexes Résumé : Pollution from VOCs is the subject of numerous treatment studies; however, the
biotreatment of VOCs has been considered only recently. The study that we conducted
showed the effective degradation of methylethylketone in a batch reactor by using a mixed
culture of microorganisms taken from the aeration tanks of biological treatment plant of El
Menia Constantine. The study was carried out at 35 ° C.
This work involves both the study of the kinetics of growth characteristics of
microorganisms and of the biodegradation of the pollutants. We also examined the
influence of a number of operating parameters such as:
The initial concentration of biomass
The initial concentration of MEK on the rate of substrate degradation and the yield
of substrate conversion into biomass and
The influence of the presence of acetone as a second source of carbon.Diplôme : Magistère En ligne : ../theses/chimie/TER5422.pdf Permalink : index.php?lvl=notice_display&id=3782 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité TER/5422 TER/5422 Thèse Bibliothèque principale Thèses Disponible
Titre : Biodégradation du méthanol en réacteur Batch et étude de l'influence des paramétres physico-chimique sur la cinétique Type de document : texte imprimé Auteurs : Mokhtar Bouziane ; Univ. de Constantine, Éditeur scientifique ; A. Derradji, Directeur de thèse Année de publication : 2009 Importance : 113 f. Note générale : 01 Disponible à la salle de recherche 02 Disponibles au magazin de la B.U.C. 01 CD Langues : Français (fre) Catégories : Français - Anglais
ChimieTags : Biomasse Substrat Biodégradation Ethanol Méthanol Réacteur batch Consortium COV Chèoroforme Mulieu nutritif Methanol VOC substrate biodegradation batch reactor biomass chloroform specific growth nutritive medium لمیثانول الایثانول المركبات العضویة المتطایرة مزیج من الكائنات الحیة الدقیقة معدل النمو
الحیوي الوسط الغدائي الكلوروفورمIndex. décimale : 540 Chimie et sciences connexes Résumé : Among compounds responsible for air pollution, power is increasingly focused
on volatile organic compounds (VOC). These compounds are harmful to humans
since there are direct risks to health , and degrade in the atmosphere , they disturb
the chemical equilibrium and thus constitute the main precursors of
photochemical pollution in the troposphere also contributing to greenhouse effect.
This study contributes to the understanding of biological phenomena that control
the degradation of volatile organic compounds in a series of batch reactors.
The lead compound which has been testing in batch reactor with a consortium
from the treatment plant of El Menia is the methanol.
In this work we studied the influence of some parameters
• Influence of the initial concentration of methanol S0.
• Influence of the initial concentration of biomass and X0 determining the initial
concentration of biomass suitable for degradation.
• Influence of temperature on the biodegradation and the determination of the
appropriate temperature.
• Influence of the presence of a substituent gênant biodegradation, chloroform
(CHCl3).
• Influence of the presence of ethanol.
Finally we studied the characteristics of the specific growth rate of biodegradation for
methanol, ethanol and the mixture (methanol + ethanol).Diplôme : Magistère En ligne : ../theses/chimie/BOU5441.pdf Permalink : index.php?lvl=notice_display&id=3793 Biodégradation du méthanol en réacteur Batch et étude de l'influence des paramétres physico-chimique sur la cinétique [texte imprimé] / Mokhtar Bouziane ; Univ. de Constantine, Éditeur scientifique ; A. Derradji, Directeur de thèse . - 2009 . - 113 f.
01 Disponible à la salle de recherche 02 Disponibles au magazin de la B.U.C. 01 CD
Langues : Français (fre)
Catégories : Français - Anglais
ChimieTags : Biomasse Substrat Biodégradation Ethanol Méthanol Réacteur batch Consortium COV Chèoroforme Mulieu nutritif Methanol VOC substrate biodegradation batch reactor biomass chloroform specific growth nutritive medium لمیثانول الایثانول المركبات العضویة المتطایرة مزیج من الكائنات الحیة الدقیقة معدل النمو
الحیوي الوسط الغدائي الكلوروفورمIndex. décimale : 540 Chimie et sciences connexes Résumé : Among compounds responsible for air pollution, power is increasingly focused
on volatile organic compounds (VOC). These compounds are harmful to humans
since there are direct risks to health , and degrade in the atmosphere , they disturb
the chemical equilibrium and thus constitute the main precursors of
photochemical pollution in the troposphere also contributing to greenhouse effect.
This study contributes to the understanding of biological phenomena that control
the degradation of volatile organic compounds in a series of batch reactors.
The lead compound which has been testing in batch reactor with a consortium
from the treatment plant of El Menia is the methanol.
In this work we studied the influence of some parameters
• Influence of the initial concentration of methanol S0.
• Influence of the initial concentration of biomass and X0 determining the initial
concentration of biomass suitable for degradation.
• Influence of temperature on the biodegradation and the determination of the
appropriate temperature.
• Influence of the presence of a substituent gênant biodegradation, chloroform
(CHCl3).
• Influence of the presence of ethanol.
Finally we studied the characteristics of the specific growth rate of biodegradation for
methanol, ethanol and the mixture (methanol + ethanol).Diplôme : Magistère En ligne : ../theses/chimie/BOU5441.pdf Permalink : index.php?lvl=notice_display&id=3793 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité BOU/5441 BOU/5441 Thèse Bibliothèque principale Thèses Disponible
Permalink
PermalinkPermalinkPermalink
Permalink
Permalink
Permalink
Permalink
Permalink
Permalink
