ETUDE DE LA BIODEGRADATION SELECTIVE DE PHENOLS CHLORES. CORRELATION AVEC LES PROPRIETES PHYSICO-CHIMIQUES PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download ETUDE DE LA BIODEGRADATION SELECTIVE DE PHENOLS CHLORES. CORRELATION AVEC LES PROPRIETES PHYSICO-CHIMIQUES PDF full book. Access full book title ETUDE DE LA BIODEGRADATION SELECTIVE DE PHENOLS CHLORES. CORRELATION AVEC LES PROPRIETES PHYSICO-CHIMIQUES by PATRICIA.. OLGUIN LORA. Download full books in PDF and EPUB format.
Book Description
CE TRAVAIL SE SITUE DANS LE DOMAINE DE L'IMPACT DES MOLECULES XENOBIOTIQUES CHLORES SUR LES BIOMASSES MICROBIENNES ADAPTEES A LEUR BIODEGRADATION. LORSQUE NOUS PRENONS EN CONSIDERATION L'ACTIVITE INITIALE DE BIODEGRADATION, LES CONSTANTES DE VITESSE ET D'EQUILIBRE SONT PARFAITEMENT DETERMINEES PAR DES MODELES BASEES EXCLUSIVEMENT SUR LE PARAMETRE CONCENTRATION EN SUBSTRAT. A LA SUITE DE CETTE PHASE INITIALE, LE PROCESSUS DE LA BIODEGRADATION N'EST PLUS EXPLIQUE PAR LE MODELE ET SE TRADUIT PAR L'APPARITION D'UN DEFICIT DU BILAN DES IONS CHLORURE RELARGUES ET PAR L'ACCUMULATION DE METABOLITES INTERMEDIAIRES. CETTE NOUVELLE LIMITATION TRADUIT UNE PHASE D'ADAPTATION TRANSITOIRE FONCTION DE LA CONCENTRATION ET DE LA NATURE DE CE SUBSTRAT. DANS UN DEUXIEME TEMPS, NOUS AVONS MONTRE QUE LES CONSTANTES CINETIQUES DE CETTE ACTIVITE PEUVENT ETRE EXPLIQUEES PAR LA CONJONCTION DE PLUSIEURS PROPRIETES PHYSICO-CHIMIQUES. CES CORRELATIONS SONT ESSENTIELLEMENT ETABLIES SUR LA BASE DES PROPRIETES DE DIFFUSION DES CHLOROPHENOLS DANS LES MEMBRANES (K O W, PK A) ET SUR LA BASE DES CONFIGURATIONS CHIMIQUES FAISANT INTERVENIR LE NOMBRE DE SUBSTITUANTS CHLORES EN POSITION ORTHO. L'ADAPTATION PROGRESSIVE D'UNE BIOMASSE AU 2,4,6-TCP EN BIOREACTEUR CONTINU S'AVERE EFFICACE ASSOCIEE A L'APPORT D'UNE SOURCE D'ENERGIE TELLE QUE LE PHENOL. EN TANT QUE CO-SUBSTRAT, LE 2,4-DCP N'APPORTE PAS D'AMELIORATION DE L'ADAPTATION DE LA BIODEGRADATION DU 2,4,6-TCP, MAIS AU CONTRAIRE NUIT AUX PERFORMANCES DU BIOREACTEUR. CETTE PHASE D'ADAPTATION MODIFIE DE MANIERE PROFONDE LES CARACTERISTIQUES DE LA BIOMASSE ADAPTEE AU PHENOL.
Book Description
CE TRAVAIL SE SITUE DANS LE DOMAINE DE L'IMPACT DES MOLECULES XENOBIOTIQUES CHLORES SUR LES BIOMASSES MICROBIENNES ADAPTEES A LEUR BIODEGRADATION. LORSQUE NOUS PRENONS EN CONSIDERATION L'ACTIVITE INITIALE DE BIODEGRADATION, LES CONSTANTES DE VITESSE ET D'EQUILIBRE SONT PARFAITEMENT DETERMINEES PAR DES MODELES BASEES EXCLUSIVEMENT SUR LE PARAMETRE CONCENTRATION EN SUBSTRAT. A LA SUITE DE CETTE PHASE INITIALE, LE PROCESSUS DE LA BIODEGRADATION N'EST PLUS EXPLIQUE PAR LE MODELE ET SE TRADUIT PAR L'APPARITION D'UN DEFICIT DU BILAN DES IONS CHLORURE RELARGUES ET PAR L'ACCUMULATION DE METABOLITES INTERMEDIAIRES. CETTE NOUVELLE LIMITATION TRADUIT UNE PHASE D'ADAPTATION TRANSITOIRE FONCTION DE LA CONCENTRATION ET DE LA NATURE DE CE SUBSTRAT. DANS UN DEUXIEME TEMPS, NOUS AVONS MONTRE QUE LES CONSTANTES CINETIQUES DE CETTE ACTIVITE PEUVENT ETRE EXPLIQUEES PAR LA CONJONCTION DE PLUSIEURS PROPRIETES PHYSICO-CHIMIQUES. CES CORRELATIONS SONT ESSENTIELLEMENT ETABLIES SUR LA BASE DES PROPRIETES DE DIFFUSION DES CHLOROPHENOLS DANS LES MEMBRANES (K O W, PK A) ET SUR LA BASE DES CONFIGURATIONS CHIMIQUES FAISANT INTERVENIR LE NOMBRE DE SUBSTITUANTS CHLORES EN POSITION ORTHO. L'ADAPTATION PROGRESSIVE D'UNE BIOMASSE AU 2,4,6-TCP EN BIOREACTEUR CONTINU S'AVERE EFFICACE ASSOCIEE A L'APPORT D'UNE SOURCE D'ENERGIE TELLE QUE LE PHENOL. EN TANT QUE CO-SUBSTRAT, LE 2,4-DCP N'APPORTE PAS D'AMELIORATION DE L'ADAPTATION DE LA BIODEGRADATION DU 2,4,6-TCP, MAIS AU CONTRAIRE NUIT AUX PERFORMANCES DU BIOREACTEUR. CETTE PHASE D'ADAPTATION MODIFIE DE MANIERE PROFONDE LES CARACTERISTIQUES DE LA BIOMASSE ADAPTEE AU PHENOL.
Author: G. Buitron Publisher: IWA Publishing (International Water Assoc) ISBN: Category : Science Languages : en Pages : 452
Book Description
Efficient non-polluting use of resources by the chemical industries requires an integrated and cost effective approach that is both holistic and multimedia. Beneficial present and future resource use should be preserved with a focus on public health and environmental protection. These proceedings contain 59 papers selected both from the oral and poster presentations, representing the best contributions to a conference with the specific aim of evaluating technologies and sharing experiences for minimization and end of pipe treatment of wastes in the chemical/petrochemical industries. This distinctive multidimensional perspective is reflected in the topics covered: wastewater minimization and management; water and wastewater characterisation; physicochemical, aerobic, anaerobic and combined wastewater treatment processes; textile waste treatment; site restoration; and volatile organic compounds treatment. Attention is given to the interaction between source control and end of pipe treatment, where changes in the first often influence the performance of the second. Owing to increasingly stringent effluent requirements including toxicity limits and ecotoxicological concerns, source control is the preferred option for waste management. The opportunities for research and improvements in practical application, as well as the need of enhanced international cooperation between disciplines, are critical to addressing current multifaceted concerns and feature strongly in the high-quality work assembled here.
Author: G. Angeletti Publisher: Springer Science & Business Media ISBN: 9401133565 Category : Technology & Engineering Languages : en Pages : 545
Book Description
More than 10 years after the "First European Symposium on Organic Micropollutants in the Aquatic Environment", the "Sixth Symposium" was held in Lisbon (Portugal) from 22 to 24 May 1990. The Symposium was organised within the framework of the Concerted Action COST 641 * which is included in the Fourth R&D Programme on the Environment of the Commission of the European Communities expiring at the end of 1990. After restructuring the Concerted Action in 1984, particular attention has been devoted to fate and transformation of organic micropollutants in the aquatic environment. Therefore, a major aim of the Symposium was to review current studies and progress in these areas, besides more general aspects related to analytical methodologies and behaviour of pollutants during water treatment processes. This volume contains the plenary papers presented in the following sessions at the Symposium: - Multidisciplinary studies - Partitioning of organic micropollutants in the aquatic environment - Novel analytical techniques in environmental chemistry - Monitoring micropollutant - Degradation of organic micropollutants during field conditions - Reclamation of polluted ground water - Chemical and photochemical oxidation - Future of environmental chemistry. In addition, extended versions of posters are included, covering the four topics which are dealt within the four Working Parties forming the structure of the Concerted Action: 1. Analytical methodologies 2. Transport and distribution 3. Transformation reactions 4. Water treatment. We believe that the Proceedings give a good overview of current activities in these fields of research in Europe.
Author: S. Roussos Publisher: Springer Science & Business Media ISBN: 9401706611 Category : Technology & Engineering Languages : en Pages : 641
Book Description
G.HAINNAUX Departement Milieu et Activites Agricoles, Centre ORSTOM, 911 Avenue d' Agropolis, B.P. 5045, 34032 Montpellier Cedex , France. Solid state fermentation, popularly abbreviated as SSF, is currently investigated by many groups throughout the world. The study of this technique was largely neglected in the past in European and Western countries and there is now a high demand for SSF, meaning in food, environment, agricultural, phannaceutical and many other biotechnological applications. It gives me satisfaction to note that the importance of this technique was realised at my department way back in 1975 since then, our team has put concentrated efforts on developing this technique. xvii Foreword Advances in Solid State Fermentation Foreword M. PUYGRENIER Agropolis Valorisation, Avenue d' Agropolis, 34394 Montpellier Cedex 5, France. On the name of the Scientific Community, I would like to express the wish that this International Symposium on SSF should be successful. Solid State Fermentation is part of biotechnology research. It consists on seeding solid culture medium with bacteria or fungi (filamentous or higher) and on producing, in this medium (solid components and exudates) metabolites and high value products. In fact, this process is very old. In older industries such the food and agricultural, this technique has been extensively used. An example of this is the production of pork sausages and Roquefort cheese. Pharmaceutical industry could make extensive use of SSF in the production of secondary metabolites of many kinds and development in this direction is soon expected.
Author: Roman Réh Publisher: Mdpi AG ISBN: 9783036517926 Category : Technology & Engineering Languages : en Pages : 168
Book Description
This Special Issue of Polymers is a collection of 11 original high-quality scientific contributions on basic and applied research in the field of wood science and technology, and provides good examples of the recent challenges related to the production and application of wood and wood-based materials. The Special Issue includes individual papers concerned with the enhancement of the performance and technological properties of wood composites, above all plywood, as well as with the ignition and combustion of wood and wood composites in monitoring and evaluating these processes on state-of-the-art equipment, and monitoring chemical changes in wood and wood adhesives and composites. The topic of the Special Issue has clearly resonated with the world's scientific community and the responses have come from traditionally strong wood research centers in Europe and Asia.
Author: James E. Mark Publisher: Oxford University Press, USA ISBN: 9780195181012 Category : Reference Languages : en Pages : 1250
Book Description
This new edition includes better values of properties already reported, properties not reported in time for the earlier edition, and entirely new properties becoming important for modern polymer applications. It also contains 217 total polymers, 20 of which are all-new, particularly in high-technology areas such as eletrical conductivity, non-linear optical properties, microlithography, nanophotonics, and electroluminescences. Examples of specific polymers include silsesquoxane ladder polymers, 'foldamer' self-assembling polymers, and block copolymers that phase separate into 'mushrooms', ellipsoids, and sheets with on surface radically different in properties from the other.
Author: Hatice Atacag Erkurt Publisher: Springer Science & Business Media ISBN: 3642118461 Category : Science Languages : en Pages : 221
Book Description
Azo dyes play an important role as coloring agents in the textile, food, and pharmaceutical industry. Due to the toxicity, mutagenicity and carcinogenicity of azo dyes and their breakdown products, their removal from industrial wastewaters has been an urgent challenge. Promising and cost-effective methods are based on their biodegradation, which is treated in this volume. The topics presented by experts in the field include: the classification of azo dyes; toxicity caused by azo dyes; aerobic and anaerobic azo dye biodegradation mechanisms; the role of bacteria, fungi, algae and their enzymes in biodegradation; the impact of redox mediators on azo dye reduction; the integration of biological with physical and chemical processes; the biotransformation of aromatic amines; reactor modelling for azo dye conversion; the biodegradation of azo dyes by immobilized bacteria and fungi; and factors affecting the complete mineralization of azo dyes.
Author: Publisher: Elsevier ISBN: 012408107X Category : Science Languages : en Pages : 593
Book Description
Advances in Botanical Research publishes in-depth and up-to-date reviews on a wide range of topics in plant sciences. The series features several reviews by recognized experts on all aspects of plant genetics, biochemistry, cell biology, molecular biology, physiology and ecology. This thematic volume, number 71, features reviews on sea plants. Its chapters cover topics such as the role of algae in sustainability; the status of kelp exploitation and marine agronomy; potential applications for enzymatic recovery of metabolites from seaweeds; and many more. - Publishes in-depth and up-to-date reviews on a wide range of topics in plant sciences - Features a wide range of reviews by recognized experts on all aspects of plant genetics, biochemistry, cell biology, molecular biology, physiology, and ecology - Volume features reviews on sea plants
Author: PATRICIA.. OLGUIN LORA
Author: PATRICIA.. OLGUIN LORA
Author: G. Buitron
Author: G. Angeletti
Author: S. Roussos
Author: P. L'Hermite
Author: Hans Georg Wiedemann
Author: Roman Réh
Author: James E. Mark
Author: Hatice Atacag Erkurt
Author: