Download or read book Etude du comportement de l lectrode de fer en milieu alcalin written by Claude Chanson and published by . This book was released on 1986 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'INFLUENCE DES IONS SULFURE SUR LE PROCESSUS D'OXYDO-REDUCTION DU FER EN MILIEU ALCALIN A ETE ETUDIEE DANS LE BUT DE COMPRENDRE LEUR ROLE BENEFIQUE, LORS DE LA DECHARGE A -20**(O)C DE L'ACCUMULATEUR NI-FE. MISE EN EVIDENCE DE 3 TYPES D'ACTIONS : 1) LES IONS SULFURES STABILISENT LES IONS FE**(2+) EN SOLUTION (EN FORMANT UN COMPLEXE), CE QUI FACILITE L'OXYDATION DU FER; 2) L'ADSORPTION DES IONS SULFURES A PARTIR DE SOLUTIONS DILUEES SUR L'ELECTRODE INDUIT UNE CATALYSE DE L'OXYDATION DU FER; 3) A CONCENTRATION PLUS ELEVEE (5.10**(-3)M) LES IONS SULFURES CONDUISENT A LA FORMATION DE FES

Download or read book Contribution l tude du comportement lectrochimique du fer en milieu tr s alcalin written by Jean Vergnolle and published by . This book was released on 1973 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Etude du comportement lectrochimique du syst me fer milieu hydrogenocarbonat written by Ghania Kouache-Nezzal and published by . This book was released on 1981 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: ETUDE, PAR VOLTAMMETRIE CYCLIQUE, DU COMPORTEMENT DU FER EN MILIEU LEGEREMENT BASIQUE AQUEUX CARBONATE. OBTENTION DE COURBES TRES DIFFERENTES SELON QUE LES SOLUTIONS SONT SOUMISES A UN BARBOTAGE D'AZOTE OU DE GAZ CARBONIQUE, EN RAISON DE PRECIPITATION DE COMPOSES SUR L'ELECTRODE. CES DIFFERENCES APPARENTES DISPARAISSENT PAR ANALYSE DES COURBES D'IMPEDANCEMETRIE. CONCLUSIONS SUR LA COMPLEXITE DES MECANISMES DE DISSOLUTION DU FER EN MILIEU CARBONE

Download or read book COMPORTEMENT CINETIQUE DE L ELECTRODE DE ZINC EN MILIEU ALCALIN written by BOUALEM.. SAIDANI and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: INFLUENCE DE LA POLARISATION ET DE L'ELECTROLYTE SUR LA DISSOLUTION D'UNE ELECTRODE EN ZINC. ETUDES THEORIQUE ET EXPERIMENTALE

Download or read book tude exp rimentale de la production de fer lectrolytique en milieu alcalin written by Antoine Allanore and published by . This book was released on 2007 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le fer est l'un des rares métaux qui ne soit pas produit industriellement par électrolyse. Pour aider au développement d'un tel procédé pour l'acier, l'électrolyse des oxydes de fer en milieu sodique est examinée, selon deux approches. La première démarche consiste en l'étude expérimentale du mécanisme réactionnel. L'électrochimie des ions indique qu'il est possible de produire du métal par électrodéposition en milieu alcalin. Parallèlement, l'étude de la réduction d'une particule d'oxyde hématite révèle qu'elle subit, lors de sa conversion en fer métallique, une transformation macroscopique en phase solide. Les analyses démontrent la formation de magnétite comme intermédiaire réactionnel. La seconde démarche est dédiée à la production du fer métallique, par électrolyse d'une suspension de particules d'oxyde dans diverses configurations de cellules. L'incidence des paramètres de procédé a été établie et permet de proposer des éléments de conception d'une cellule industrielle.

Download or read book Journal of Electroanalytical Chemistry written by and published by . This book was released on 1960 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Lake Pavin written by Télesphore Sime-Ngando and published by Springer. This book was released on 2018-07-07 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book represents the first multidisciplinary scientific work on a deep volcanic maar lake in comparison with other similar temperate lakes. The syntheses of the main characteristics of Lake Pavin are, for the first time, set in a firmer footing comparative approach, encompassing regional, national, European and international aquatic science contexts. It is a unique lake because of its permanently anoxic monimolimnion, and furthermore, because of its small surface area, its substantially low human influence, and by the fact that it does not have a river inflow. The book reflects the scientific research done on the general limnology, history, origin, volcanology and geological environment as well as on the geochemistry and biogeochemical cycles. Other chapters focus on the biology and microbial ecology whereas the sedimentology and paleolimnology are also given attention. This volume will be of special interest to researchers and advanced students, primarily in the fields of limnology, biogeochemistry, and aquatic ecology.

Download or read book Dictionary of Building and Civil Engineering written by Don Montague and published by Taylor & Francis. This book was released on 1996 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dual-language dictionary lists over 20,000 specialist terms in both French and English, covering architecture, building, engineering and property terms. It meets the needs of all building professionals working on projects overseas. It has been comprehensively researched and compiled to provide an invaluable reference source in an increasingly European marketplace.

Download or read book Pandex Current Index to Scientific and Technical Literature written by and published by . This book was released on 1971 with total page 1320 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book CJChE written by and published by . This book was released on 2004-08 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Canadian Journal of Chemistry written by and published by . This book was released on 1988 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Faecal Sludge Management written by Linda Strande and published by IWA Publishing. This book was released on 2014-08-15 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is estimated that literally billions of residents in urban and peri-urban areas of Africa, Asia, and Latin America are served by onsite sanitation systems (e.g. various types of latrines and septic tanks). Until recently, the management of faecal sludge from these onsite systems has been grossly neglected, partially as a result of them being considered temporary solutions until sewer-based systems could be implemented. However, the perception of onsite or decentralized sanitation technologies for urban areas is gradually changing, and is increasingly being considered as long-term, sustainable options in urban areas, especially in low- and middle-income countries that lack sewer infrastructures. This is the first book dedicated to faecal sludge management. It compiles the current state of knowledge of the rapidly evolving field of faecal sludge management, and presents an integrated approach that includes technology, management, and planning based on Sandecs 20 years of experience in the field. Faecal Sludge Management: Systems Approach for Implementation and Operation addresses the organization of the entire faecal sludge management service chain, from the collection and transport of sludge, and the current state of knowledge of treatment options, to the final end use or disposal of treated sludge. The book also presents important factors to consider when evaluating and upscaling new treatment technology options. The book is designed for undergraduate and graduate students, and engineers and practitioners in the field who have some basic knowledge of environmental and/or wastewater engineering.

Download or read book Scientific Basis for Nuclear Waste Management XXII Volume 556 written by David J. Wronkiewicz and published by . This book was released on 1999-11-24 with total page 1370 pages. Available in PDF, EPUB and Kindle. Book excerpt: Safe and effective management of nuclear waste provides a broad range of challenges for materials science. Waste processing, waste form and engineered barrier properties, interactions between engineered and geological systems, radiation effects, chemistry and transport of waste species, and long-term predictions of repository performance are just some of the scientific problems facing modern society. This book, the 22nd in a very successful series from MRS, offers an international and inter-disciplinary perspective on the issues, and features developments in both fundamental and applied areas. Topics include: development and characterization of ceramic waste forms; ceramic waste form corrosion; glass waste form processing; glass formulation, properties and structure; glass waste form corrosion; spent nuclear fuel; performance assessment; repository backfill; flow and transport; natural analogues; container corrosion; metal waste form corrosion; radionuclide speciation and solubility; radionuclide sorption; microbial effects; radiation effects; cement waste forms and waste treatment.

Download or read book Dissertation Abstracts International written by and published by . This book was released on 1992 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Comptes Rendus Proceedings written by International Committee of Electrochemical Thermodynamics and Kinetics and published by . This book was released on 1952 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biotransformation of Waste Biomass into High Value Biochemicals written by Satinder Kaur Brar and published by Springer Science & Business Media. This book was released on 2013-09-24 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: Agro-industrial wastes are end-products emerging after industrial processing operations and also from their treatment and disposal e.g. solid fruit wastes and sludge. The agro-industrial wastes are often present in multiphase and comprise multicomponent. Nevertheless, these wastes are a goldmine as they possess valuable organic matter which can be diverted towards high value products ranging from polymers to antibiotics to platform chemicals. There have been plenty of books published on bioenergy, enzymes and organic acids, among others. However, this emerging field of biochemical has not yet been covered so far which is an important entity of the biorefinery model from waste biomass and needs to be understood from fundamental, applied as well as commercial perspective which has been laid out in this book.

Download or read book Applied Mineralogy in the Mining Industry written by W. Petruk and published by Elsevier. This book was released on 2000-11-29 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt: Techniques of performing applied mineralogy investigations, and applications and capabilities of recently developed instruments for measuring mineral properties are explored in this book intended for practicing applied mineralogists, students in mineralogy and metallurgy, and mineral processing engineers. The benefits of applied mineralogy are presented by using in-depth applied mineralogy studies on base metal ores, gold ores, porphyry copper ores, iron ores and industrial minerals as examples. The chapter on base metal ores includes a discussion on the effects of liberation, particle sizes and surfaces coatings of Pb, Cu, Fe, Ca and So4- on the recoveries of sphalerite, galena and chalcopyrite. The chapter on gold discusses various methods of determining the quantities of gold in different minerals, including 'invisible' gold in pyrite and arsenopyrite, so that a balance of the distribution of gold among the minerals can be calculated. This book also discusses the roles of pyrite, oxygen, moisture and bacterial (thiobacillus ferrooxidans) on reactions that produce acidic drainage from tailings piles, and summarizes currently used and proposed methods of remediation of acidic drainage.