Download or read book Conception et mise en place d un proc d automatis d oxydation par voie humide en catalyse h t rog ne OVHC written by Alexis El Khoury and published by . This book was released on 2008 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'identification dans l'eau de produits organiques réfractaires, non biodégradables et toxiques, provenant de l'industrie chimique et pétrochimique, a défié les techniques conventionnelles de traitement des effluents aqueux tels que l'incinération ou l'abattement biologique. Le développement de technologies alternatives permettant de traiter efficacement ces contaminants s'est avéré nécessaire. Parmi les procédés de traitement développés, l'Oxydation par Voie Humide (OVH) se présente comme une technologie destructive basée sur l'oxydation en phase aqueuse des polluants organiques ou inorganiques, en utilisant de l'oxygène moléculaire ou de l'air comme source d'oxydant. Généralement, le polluant n'est pas complètement éliminé mais partiellement converti, selon un mécanisme radicalaire, en plusieurs intermédiaires de toxicité significativement réduite. L'OVH à l'oxygène ou à l'air peut être non catalysée ou effectuée en présence de catalyseur homogène ou hétérogène. Dans le cadre de cette étude, l'OVH est effectuée en présence d'un catalyseur (à base de ruthénium et de cérium) déposé sur un support solide (billes d'alumine) afin de traiter des déchets organiques persistants en phase aqueuse dans des conditions de pression et température nettement plus douces que l'OVH simple. L'essentiel du travail réside dans la conception et la commande du procédé d'OVHC : notamment la régulation de la température du réacteur à lit fixe gaz/liquide/solide, le contrôle de sa pression et son maintien en régime stationnaire par le contrôle de la sortie liquide du procédé. Dans cette optique, la conduite du système développé est assurée par un ensemble de modules intelligents permettant la commande de la partie opérative du procédé. Le pilotage à distance du système est rendu possible grâce au développement d'une interface numérique de supervision répondant aux aspects ergonomiques et techniques requis pour le maintien de la bonne conduite et de la sécurité de l'installation.

Download or read book Oxydation en voie humide de la pollution organique aqueuse r fractaire par le peroxyde d hydrog ne temp rature lev e Etude de nouveaux catalyseurs written by Magali Falcon and published by . This book was released on 1995 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'OXYDATION EN PHASE AQUEUSE DE COMPOSES ORGANIQUES PAR LE PEROXYDE D'HYDROGENE CATALYSEE PAR LES SELS DE FER (REACTIF DE FENTON), EXPLOITEE A LA TEMPERATURE DE 120C ENVIRON (PROCEDE WPO#) CONDUIT A UNE ELIMINATION SATISFAISANTE DE LA MATIERE ORGANIQUE, MAIS MALGRE TOUT LIMITEE PAR L'ACCUMULATION D'ACIDES CARBOXYLIQUES REFRACTAIRES (ACETIQUE, OXALIQUE,). LE SYSTEME CATALYTIQUE FE/CU/MN, UTILISE EN REMPLACEMENT DU FER CONDUIT A UNE OXYDATION QUASI-TOTALE DES DITS ACIDES, DANS DES CONDITIONS OPERATOIRES (100C) MOINS CONTRAIGNANTES QUE CELLES DU PROCEDE CLASSIQUE. L'ASSOCIATION DES TROIS SELS CONDUIT A UNE ACTIVITE CATALYTIQUE SUPERIEURE A CELLE OBSERVEE POUR CHACUN DES SELS ISOLES. CE PHENOMENE MARQUE DE SYNERGIE APPARENTE S'EXPLIQUE PAR L'INTERACTION DES ESPECES FE ET CU LORS DE LA DECOMPOSITION DU PEROXYDE. IL S'EXPLIQUE AUSSI PAR LE ROLE SPECIFIQUE DE CHAQUE SEL SUR L'OXYDATION DE CHAQUE ACIDE CARBOXYLIQUE: ROLE SPECIFIQUE DE CU DANS LE CAS DE L'ACIDE ACETIQUE ET SURTOUT ROLE DE MN DANS LE CAS DE L'ACIDE OXALIQUE OU SEMBLE INTERVENIR UN MECANISME NON RADICALAIRE. CE NOUVEAU PROCEDE CATALYSE PAR LE TRIO CATALYTIQUE FE/CU/MN A PU ETRE UTILISE AVEC SUCCES POUR LE TRAITEMENT COMPLET DE POLLUTIONS ORGANIQUES INDUSTRIELLES AQUEUSES REFRACTAIRES AU PROCEDE CLASSIQUE WPO#. ENFIN, LE PROBLEME DE LA SEPARATION DES SELS DE METAUX APRES REACTION EST ABORDE. LES RESULTATS DE CE TRAVAIL RENFORCENT LES POTENTIALITES D'UTILISATION DU PEROXYDE D'HYDROGENE DANS LE TRAITEMENT DES EFFLUENTS INDUSTRIELS ORGANIQUES AQUEUX

Download or read book Biodiesel Production written by Biodiesel Production Technologies Challenges and Future Prospects Task Committee and published by . This book was released on 2019 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biodiesel Production: Technologies, Challenges, and Future Prospects provides in-depth information on fundamentals, approaches, technologies, source materials and associated socio-economic and political impacts of biodiesel production.

Download or read book Agrochimica written by International Atomic Energy Agency and published by . This book was released on 1977 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic matter and soil productivity; Turnover of plant residues; Mineralization of organic compounds; Dynamics of organic forms of nitrogen; Nitrogen economy; Biodegradation of organic matter; Biochemical transformation of organic matter; Bitumens in soil organic matter; Characterization of humic acids; Carbon dating; Modern techniques and their implact on soil organic matter research; Sludge; Soil organic matter components and plant metabolism; Interaction between agrochemicals and organic matter; Peat.

Download or read book Food Chemistry Research Developments written by Konstantinos N. Papadopoulos and published by Nova Publishers. This book was released on 2008 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Food chemistry is the study of chemical processes and interactions of all biological and non-biological components of foods. The biological substances include such items as meat, poultry, lettuce, beer, and milk as examples. It is similar to biochemistry in its main components such as carbohydrates, lipids, and protein, but it also includes areas such as water, vitamins, minerals, enzymes, food additives, flavours, and colours. This discipline also encompasses how products change under certain food processing techniques and ways either to enhance or to prevent them from happening. An example of enhancing a process would be to encourage fermentation of dairy products with lactic acid; an example of a preventing process would be stopping the Maillard reaction on the surface of freshly cut Red Delicious apples whether by hand or mechanical methods. This book presents the recent research from around the world in this field.

Download or read book Probiotic Bacteria written by J. Paulo Sousa e Silva and published by CRC Press. This book was released on 2014-04-02 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: Complied by an expert editorial team with noteworthy and remarkable experience, this book covers technological aspects related to probiotics, not only in terms of delivery modes but also in terms of protection technologies. It includes discussions of their therapeutic and physiologic implications and benefits, and provides a contemporary update and a holistic review of the topic. It focuses on the technological aspects of probiotic products, brings together the information needed for their successful development, and examines the international picture regarding regulatory issues.

Download or read book Biodiesel Production Technologies written by Satish Kumar Mehla and published by Pointer Publishers. This book was released on 2007 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: India Is Major Importer In The Global Oil Market And Any Fluctuation In The Price Of The Oil Would Affect Its Economy. Therefore Alternative Source Of Fuel Is Necessary To Meet Our Oil Demands. India Has Large Scope Of Biodiesel Due To The Large Scale Of Biomass Availability. As Per Conditions Of India Only Seeds Containing Non-Edible Oil Can Be Considered For Biodiesel. The Biodiesel Having The Advantage Of Being Potential Renewable Source Of Energy Is Known To Be Non-Toxic, Eco Friendly, Easy To Store And To Transport, And Has Better Lubricity Properties. The Book Deals With Various Technologies For Production Of Biodiesel. Characterization Of Vegetable Oils & Waste Vegetable Oils, Rate Equation For Biodiesel Production Reaction, Anaerobic Reactors For Production Of Biogas And Biohydrogen, Kinetics Of Generation Of Power Coupled With Reduction In Bod In Effluents Using Microbial Fuel Cell And Micellar Spectrophotometric Determination Of Metal Ions In Samples Of Biodiesel Are Other Major Themes Of This Book. The Book Will Be Handy Reference For Students, Academicians, Researchers Biotechnologists, Chemical And Bio-Engineers.

Download or read book Confronting Poverty in Iraq written by World Bank and published by World Bank Publications. This book was released on 2011-01-10 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report provides the most comprehensive and rigorous analysis of Iraqi income and expenditure in several decades. The report makes extensive use of the Iraq Household Socio-Economic Survey, the first nationwide income and expenditure survey since 1988. IHSES data is complemented income and expenditure data from a wide range of other measures of living standards, allowing us to analyze living standards in a holistic way. The analysis presented here was performed with two main goals first, to inform the Government s Poverty Reduction Strategy; and second, to serve as a baseline for future assessments of changes in living standards and the identification of critical issues for deeper examination. Iraqi living standards have two unusual characteristics. First, they have fallen over the past generation. Second, they feature surprisingly little inequality. These characteristics are both rooted in Iraq s recent history of authoritarian government, war, military occupation, insurgency, and civil strife leading to infrastructure destruction and population displacement. There have been few opportunities for individuals to prosper from professional or entrepreneurial activities. Decades of neglected investment have resulted in deterioration of social services and economic infrastructure. Consequently, individuals have lacked capabilities to prosper and an investment climate conducive to prosperity. School enrollment and life expectancy have declined. Extremely low returns to education reflect the combination of poor educational quality and lack of employment opportunities. In terms of economic infrastructure, access to reliable electricity and water, and even access to paved roads are low, are further reflections of decades of neglect. While the upper end of the distribution has been pulled down by a lack of opportunities, the lower end has been supported by direct government provision of food. The Public Distribution System (PDS) provides 85 percent of food needs. While PDS has been useful as a safety net for the poor and the vulnerable, the system is expensive, inefficient, and fiscally risky. Indeed, PDS food rations account for a far greater share of public spending than does education or health. Going forward, Iraq faces two main challenges. First, although Iraq does not have to develop from scratch, it faces a formidable challenge in re-development. Second, a shift by the Government is required from direct provision of basic subsistence toward investment in human capacities. The Government can provide an enabling environment through investments in economic infrastructure and services to business and citizens, thus allowing the population to make productive use of education and their own labor. Both challenges are now being taken up by the Poverty Reduction Strategy, which articulates a detailed set of required actions and outlines priorities for government spending.

Download or read book Conceptual Modeling for Traditional and Spatio Temporal Applications written by Christine Parent and published by Springer Science & Business Media. This book was released on 2006-09-02 with total page 475 pages. Available in PDF, EPUB and Kindle. Book excerpt: From environmental management to land planning and geo-marketing, the number of application domains that may greatly benefit from using data enriched with spatio-temporal features is expanding very rapidly. This book shows that a conceptual design approach for spatio-temporal databases is both feasible and easy to apprehend. While providing a firm basis through extensive discussion of traditional data modeling concepts, the major focus of the book is on modeling spatial and temporal information.

Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer. This book was released on 1976 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and dis· seminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) *at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the ac· tivity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volume were handled by an international publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 20 (thesis year 1975) a total of 10,374 theses titles from 28 Canadian and 239 United States universities. We are sure that this broader base for theses titles reported will greatly enhance the value of this important annual reference work. The organization of Volume 20 is identical to that of past years. It consists of theses titles arranged by discipline and by university within each discipline.