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Partager le résultat de cette recherche Interroger des sources externesEtude géologique et gîtologique de la minéralisation ferrifère et cupro-barytique des massifs carbonates de Kef Sidi Marouf, kef derdja et Kef Boulehmame, commune de Sidi Marouf (ne Algerien) / Azzouz Benlamari
Titre : Etude géologique et gîtologique de la minéralisation ferrifère et cupro-barytique des massifs carbonates de Kef Sidi Marouf, kef derdja et Kef Boulehmame, commune de Sidi Marouf (ne Algerien) Type de document : texte imprimé Auteurs : Azzouz Benlamari, Auteur ; Youcef Bouftouha, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2015 Importance : 88 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
Sciences de la terreTags : Geologie ressources minerales Sidi Marouf formations carbonatées fracturation dissolution karstification dolomitisation silicification minéralisation cupro-ferro-barytique hydrothermale carbonate formations fracturing karst dolomitization mineralization copper-iron-baryte hydrothermal سيدي معروف انكسارات التكوينات الجيولوجية التمعدنات الفراغات الكارستية الباريتين المحاليل الهيدروتيرمالية Index. décimale : 550 Sciences de la terre Résumé :
The region of Sidi Maarouf and its surroundings in north-eastern Algeria is distinguished by the presence of a number of massive carbonates of Jurassic age (Kef Sidi Marouf, Kef oulehmame and Kef Derdja). These massives carbonates, belonging to the external domain of maghrebide range are located in the transition zone between the external and the internal domain, represented by metamorphic formations of the Kabyle plinth.
The mountains of Kef Sidi Marouf and Kef Boulehmame present an interest economic region, because they contain iron deposits and carbonate rocks that can be used for steel, cement and aggregates, while Kef Derdja contains only one index of a copper-iron-baryte mineralization and a quarry for the extraction of limestone blocks to rockfill.
These carbonate mountains occupying a peridiapiric position are formed mainly by carbonate rocks of jurassic age. The formations of these massifs show traces of several tectonic events (fracturing, grinding, rebound layers in the vertical).
The intense fracturing of the carbonate rocks greatly promoted the circulation of fluids and led the development of dissolution phenomena of karst, dolomitization, silicification and mineralization.
The ore bodies form the ore deposits of study area have variable morphologies and volumes. However, cluster and lode are the most common.
Mineralization of carbonate masses of the region of Sidi Marouf is composed mainly of iron oxides and hydroxides (hematite, goethite and limonite), plus a barium-copper mineralization.
The geological and gîtological data of mineralizations hosted in carbonate mountains formations in the region of Sidi Marouf reveal a set up of these mineralizations by hydrothermal solutions.
Diplôme : Magistère En ligne : ../theses/sc-terre/BEN6899.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10230 Etude géologique et gîtologique de la minéralisation ferrifère et cupro-barytique des massifs carbonates de Kef Sidi Marouf, kef derdja et Kef Boulehmame, commune de Sidi Marouf (ne Algerien) [texte imprimé] / Azzouz Benlamari, Auteur ; Youcef Bouftouha, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2015 . - 88 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
Sciences de la terreTags : Geologie ressources minerales Sidi Marouf formations carbonatées fracturation dissolution karstification dolomitisation silicification minéralisation cupro-ferro-barytique hydrothermale carbonate formations fracturing karst dolomitization mineralization copper-iron-baryte hydrothermal سيدي معروف انكسارات التكوينات الجيولوجية التمعدنات الفراغات الكارستية الباريتين المحاليل الهيدروتيرمالية Index. décimale : 550 Sciences de la terre Résumé :
The region of Sidi Maarouf and its surroundings in north-eastern Algeria is distinguished by the presence of a number of massive carbonates of Jurassic age (Kef Sidi Marouf, Kef oulehmame and Kef Derdja). These massives carbonates, belonging to the external domain of maghrebide range are located in the transition zone between the external and the internal domain, represented by metamorphic formations of the Kabyle plinth.
The mountains of Kef Sidi Marouf and Kef Boulehmame present an interest economic region, because they contain iron deposits and carbonate rocks that can be used for steel, cement and aggregates, while Kef Derdja contains only one index of a copper-iron-baryte mineralization and a quarry for the extraction of limestone blocks to rockfill.
These carbonate mountains occupying a peridiapiric position are formed mainly by carbonate rocks of jurassic age. The formations of these massifs show traces of several tectonic events (fracturing, grinding, rebound layers in the vertical).
The intense fracturing of the carbonate rocks greatly promoted the circulation of fluids and led the development of dissolution phenomena of karst, dolomitization, silicification and mineralization.
The ore bodies form the ore deposits of study area have variable morphologies and volumes. However, cluster and lode are the most common.
Mineralization of carbonate masses of the region of Sidi Marouf is composed mainly of iron oxides and hydroxides (hematite, goethite and limonite), plus a barium-copper mineralization.
The geological and gîtological data of mineralizations hosted in carbonate mountains formations in the region of Sidi Marouf reveal a set up of these mineralizations by hydrothermal solutions.
Diplôme : Magistère En ligne : ../theses/sc-terre/BEN6899.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10230 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité BEN/6899 BEN/6899 Thèse Bibliothèque principale Thèses Disponible
Titre : Degradation photochimique des colorants cationiques sur des supports inorganiques chromophores en solution aqueuse Type de document : texte imprimé Auteurs : Karima Benhamouda, Auteur ; Tahar Sehili, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2017 Importance : 184 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ChimieTags : Acide oxalique oxyde de fer naturel minéralisation colorants Oxalic acid photo-like- Fenton natural oxide iron mineralization dyes حمض الأكساليك فانتون الضوئي أكسيدالحدیدالطبيعي تمعدن ملون Index. décimale : 540 Chimie et sciences connexes Résumé : The main objective of this study is to test the effectiveness of a natural miniral through
the study of the elimination of two polluting models "methylene blue and rhodamine B" in
aqueous solution.
In a homogeneous phase, various methods have been established to degrade the both
dyes; direct photolysis, photo-oxidation with hydrogen peroxide and persulfate as well as by
the Fenton reagent and photo-Fenton. The results showed that the photo-Fenton process at
254 nm is the most efficient.
The analyses by XRD, IR, Raman and X-ray fluorescence of the natural mineral,
which comes from Souk-Ehres North-East of Algeria, confirmed that this mineral consists of
89 % of hematite, this high content of iron lead us to use this support as a catalyst (source of
iron ions) to create the photo-Fenton-like process in the presence of carboxylic acids.
Among the carboxylic acids studied, oxalic acid is the most effective for the
dissolution of natural iron oxide, therefore for the photodegradation of the MB and RhB.
Indeed, under irradiation, oxalic acid forms a complex with iron oxide and leads to the release
of Fe(III) ions. In solution and by the photoreduction reaction, the Fe(III) ions are transformed
into Fe(II) and leads to the formation of hydrogen peroxide launching a photo-Fenton
reaction, leading to the formation of hydroxyl radicals.
The study of the influence of several physico-chemicals parameters (effect of acid
concentration, temperature, O2, pH, nature of radiation ...) on the efficiency of NIO/OA/UV
process yielded to the determination of optimal conditions for the dyes removal. The
abatement rates of COD for MB and RhB by this process were very reasonable, confirming
the effectiveness of the NIO in the treatments of wastewaters.
The use of natural iron in the presence of oxalic acid under solar irradiation reduces
energy costs, and required time for a total elimination of dyes.Diplôme : Doctorat En ligne : ../theses/chimie/BEN7114.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10487 Degradation photochimique des colorants cationiques sur des supports inorganiques chromophores en solution aqueuse [texte imprimé] / Karima Benhamouda, Auteur ; Tahar Sehili, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2017 . - 184 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ChimieTags : Acide oxalique oxyde de fer naturel minéralisation colorants Oxalic acid photo-like- Fenton natural oxide iron mineralization dyes حمض الأكساليك فانتون الضوئي أكسيدالحدیدالطبيعي تمعدن ملون Index. décimale : 540 Chimie et sciences connexes Résumé : The main objective of this study is to test the effectiveness of a natural miniral through
the study of the elimination of two polluting models "methylene blue and rhodamine B" in
aqueous solution.
In a homogeneous phase, various methods have been established to degrade the both
dyes; direct photolysis, photo-oxidation with hydrogen peroxide and persulfate as well as by
the Fenton reagent and photo-Fenton. The results showed that the photo-Fenton process at
254 nm is the most efficient.
The analyses by XRD, IR, Raman and X-ray fluorescence of the natural mineral,
which comes from Souk-Ehres North-East of Algeria, confirmed that this mineral consists of
89 % of hematite, this high content of iron lead us to use this support as a catalyst (source of
iron ions) to create the photo-Fenton-like process in the presence of carboxylic acids.
Among the carboxylic acids studied, oxalic acid is the most effective for the
dissolution of natural iron oxide, therefore for the photodegradation of the MB and RhB.
Indeed, under irradiation, oxalic acid forms a complex with iron oxide and leads to the release
of Fe(III) ions. In solution and by the photoreduction reaction, the Fe(III) ions are transformed
into Fe(II) and leads to the formation of hydrogen peroxide launching a photo-Fenton
reaction, leading to the formation of hydroxyl radicals.
The study of the influence of several physico-chemicals parameters (effect of acid
concentration, temperature, O2, pH, nature of radiation ...) on the efficiency of NIO/OA/UV
process yielded to the determination of optimal conditions for the dyes removal. The
abatement rates of COD for MB and RhB by this process were very reasonable, confirming
the effectiveness of the NIO in the treatments of wastewaters.
The use of natural iron in the presence of oxalic acid under solar irradiation reduces
energy costs, and required time for a total elimination of dyes.Diplôme : Doctorat En ligne : ../theses/chimie/BEN7114.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10487 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité BEN/7114 BEN/7114 Thèse Bibliothèque principale Thèses Disponible
