Download or read book Implication des microorganismes dans les processus de stockage g ologique du CO2 written by Sébastien Dupraz and published by . This book was released on 2008 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le premier acquis important de cette thèse est la construction et validation d'un système de circulation fermé nommé BCC (Biomineralization Control Cell). En plus de caractéristiques classiques d'un bioréacteur (compatibilité biologique, contrôle de la température et agitation, stérilisabilité), ce dispositif possède des modules permettant un suivi de la chimie du milieu (potentiel d'oxydo-réduction, pH, conductivité, mesures spectrophotométriques) ainsi qu'un système de percolation au travers d'une carotte de roche. Ce réacteur est une étape vers une modélisation analogique des interactions entre CO2 injecté et biosphère profonde. De plus, une nouvelle méthodologie de quantification des espèces réduites du soufre a été mise en place afin de pouvoir suivre plus efficacement les activités biologiques sulfato-réductrices. Dans ce contexte, quatre métabolismes intéressants dans une optique de bio-minéralisation ou d'assimilation biologique du CO2 ont été sélectionnés et testés : une souche uréolytique de référence carbonatogène et aérobie, Bacillus pasteurii, une bactérie sulfatoréductrice, Desulfovibrio longus, un consortium sulfato-réducteur (DVcons) et une bactérie homoacétogène, Acetobacterium carbinolicum. Le micro-organisme Bacillus pasteurii, choisi dans ce travail comme modèle de biominéralisation de carbonates, a permis de démontrer la faisabilité d'une modélisation analogique et numérique rigoureuse des processus biologiques de basification du milieu et de biominéralisation de carbonates dans des conditions physico-chimiques pertinentes pour un site de stockage de CO2, c'est à dire dans une eau reconstituée d'aquifère. Nous avons de plus démontré que la salinité jouait un rôle positif dans les capacités de piégeage minéral de CO2 par cette bactérie ; nous avons déterminé les limites du système en pression de CO2 et nous avons montré que les biocarbonates formés par nucléation sur des phosphates de calcium intra-cellulaires possédaient une signature reconnaissable en isotopes du carbone. Les souches de biosphère profonde étudiées (Desulfovibrio longus et Acetobacterium carbinolicum) ainsi que le consortium sulfato-réducteur promeuvent aussi des transformations de CO2 en carbonates solides bien réelles, mais beaucoup plus limitées. En revanche, inoculées dans l'eau d'aquifère reconstituée et associées à un flux de H2, Acetobacterium carbinolicum et le consortium sulfato-réducteur démontrent des possibilités importantes d'assimilation biologique du CO2 sous forme de biomasse cellulaire ou de polymères extracellulaires. Un sous produit intéressant de ces expériences a été de démontrer le très fort potentiel d'absorption de H2 par ces systèmes bactériens et la possibilité de le quantifier précisément. Le dispositif et la méthode mis au point ici pourront être adaptés à des études sur le devenir de H2 en sub-surface

Download or read book Impact d un stockage g ologique de CO2 sur les cosyst mes profonds des basaltes written by Paul Le Campion and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Les basaltes sont reconnus pour abriter des populations microbiennes diverses et actives lorsque les températures associées sont compatibles avec leur développement. Toutefois celles-ci sont rarement considérées dans la mise en oeuvre de technologies de capture et stockage du carbone (CCS), alors qu'elles peuvent potentiellement modifier les conditions physico-chimiques du stockage et donc le devenir en profondeur du gaz stocké. Ce travail de doctorat consiste en la réalisation du premier suivi de la diversité microbienne dans un aquifère basaltique profond sur le site pilote de stockage de CO2 d'Hellisheidi en Islande. Les communautés microbiennes ont été décrites avant l'injection puis elles ont été suivies au cours de deux injections successives de 174,6 t de CO2 pur et de 65 t de CO2 + H2S + 2. Avant les injections, la réalisation d'une phylogénie suggère que la plupart des microorganismes détectés sont endémiques de l'aquifère. Les métabolismes inférés aux différentes OTUs identifiées sont en accord avec la géochimie de l'eau, un résultat renforcé par une analyse statistique pointant un lien potentiel entre le système carbonaté et la structure des populations microbiennes. Au cours des injections, les analyses permettent de mettre en évidence des variations de composition des communautés microbiennes, celles-ci semblant n'être impactées que par l'injection de CO2 pur. On enregistre notam ment un « bloom » d'une séquence affiliée à une bactérie autotrophe réalisant l'oxydation du Fe(II), Sideroxydans lithotrophicus, qui actualise la question de savoir si une partie du CO2 injecté a été convertie en biomasse, offrant une voie alternative au stockage de CO2

Download or read book Sustainability written by Rao Y. Surampalli and published by John Wiley & Sons. This book was released on 2020-03-19 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive resource to sustainability and its application to the environmental, industrial, agricultural and food security sectors Sustainability fills a gap in the literature in order to provide an important guide to the fundamental knowledge and practical applications of sustainability in a wide variety of areas. The authors – noted experts who represent a number of sustainability fields – bring together in one comprehensive volume the broad range of topics including basic concepts, impact assessment, environmental and the socio-economic aspects of sustainability. In addition, the book covers applications of sustainability in environmental, industrial, agricultural and food security, as well as carbon cycle and infrastructural aspects. Sustainability addresses the challenges the global community is facing due to population growth, depletion of non-renewable resources of energy, environmental degradation, poverty, excessive generation of wastes and more. Throughout the book the authors discuss the economics, ecological, social, technological and systems perspectives of sustainability. This important resource: • Explores the fundamentals as well as the key concepts of sustainability; • Covers basic concepts, impact assessment, environmental and socio-economic aspects, applications of sustainability in environmental, industrial, agricultural and food security, carbon cycle and infrastructural aspects; • Argues the essentiality of sustainability in ensuring the propitious future of earth systems; and • Authored by experts from a range of various fields related to sustainability. Written for researchers and scientists, students and academics, Sustainability: Fundamentals and Applications is a comprehensive book that covers the basic knowledge of the topic combined with practical applications.

Download or read book Ecosystem Function in Heterogeneous Landscapes written by Gary M. Lovett and published by Springer Science & Business Media. This book was released on 2005-12-15 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: This groundbreaking work connects the knowledge of system function developed in ecosystem ecology with landscape ecology's knowledge of spatial structure. The book elucidates the challenges faced by ecosystem scientists working in spatially heterogeneous systems, relevant conceptual approaches used in other disciplines and in different ecosystem types, and the importance of spatial heterogeneity in conservation resource management.

Download or read book Brewing Yeast and Fermentation written by Christopher Boulton and published by John Wiley & Sons. This book was released on 2013-04-25 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now Available for the First Time in Paperback! This unique volume provides a definitive overview of modern and traditional brewing fermentation. Written by two experts with unrivalled experience from years with a leading international brewer, coverage includes all aspects of brewing fermentation together with the biochemistry, physiology and genetics of brewers' yeast. Brewing Yeast and Fermentation is unique in that brewing fermentation and yeast biotechnology are covered in detail from a commercial perspective. Now available for the first time in paperback, the book is aimed at commercial brewers and their ingredient and equipment suppliers (including packaging manufacturers). It is also an essential reference source for students on brewing courses and workers in research and academic institutions. Definitive reference work and practical guide for the industry. Highly commercially relevant yet academically rigorous. Authors from industry leading brewers.

Download or read book Jean Baptiste Say and Political Economy written by Jean-Baptiste Say and published by Taylor & Francis. This book was released on 2016-11-10 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jean-Baptiste Say (1767–1832) was one of the first great economists to have laid down the foundations of economic science. Author of the famous Treatise on Political Economy in 1803, which was revised and re-edited on several occasions, he published numerous other works including a voluminous Complete Course in Practical Political Economy in 1828–9. He also taught political economy successively from 1815 until his death in three Parisian establishments: the Athénée, the Conservatory of Arts and Trades, and the Collège de France. The texts in which Say exposes his approach to political economy have not been available in the English language until now except for the fourth edition of the ‘Preliminary Discourse’ which serves as an introduction to the Treatise. This book presents a translation which renders his works accessible to the English speaking world. For the first time, English readers will be able to become directly immersed in Say’s principal texts, where he develops his conception of political economy. Jean-Baptiste Say and Political Economy proposes a translation of a selection of eleven of Say’s texts. The first three are versions of the ‘Preliminary Discourse’ from the Treatise’s editions of 1803, 1814 and 1826 with the variations of the editions of 1817, 1819 and 1841. The following four texts are the opening discourses pronounced at the Conservatory in 1820 and 1828 and the Collège de France in 1831 and 1832. The eighth text is the ‘General Considerations’ which open the Complete Course in Practical Political Economy of 1828, with the variations of the 1840 re-edition. The final three texts are those Say devotes to ‘the progress of political economy’ in what is akin to a history of economic thought. This volume is of great importance to economic historians and people studying Jean-Baptiste Say, as well as those who are interested in economic theory and philosophy and political economy.

Download or read book Profile written by and published by . This book was released on 2001 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Invasive Species in the Pacific written by Greg Sherley and published by . This book was released on 2000 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Radiocarbon After Four Decades written by Ervin Taylor and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 611 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radiocarbon After Four Decades: An Interdisciplinary Perspective commemorates the 40th anniversary of radiocarbon dating. The volume presents discussions of every aspect of this dating technique, as well as chronicles of its development and views of future advancements and applications. All of the 64 authors played major roles in establishment, development or application of this revolutionary scientific tool. The 35 chapters provide a solid foundation in the essential topics of radiocarbon dating: Historical Perspectives; The Natural Carbon Cycle; Instrumentation and Sample Preparation; Hydrology; Old World Archaeology; New World Archaeology; Earth Sciences; and Biomedical Applications.

Download or read book Edible Caterpillars and Their Food Plants in Bas Congo written by Paul Latham and published by . This book was released on 2003 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Lessons from Amazonia written by Richard O. Bierregaard and published by Yale University Press. This book was released on 2001-12-11 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deforestation is occurring at an alarming rate in many parts of the world, causing destruction of natural habitat and fragmentation of what remains. Nowhere is this problem more pressing than in the Amazon rainforest, which is rapidly vanishing in the face of enormous pressure from humans to exploit it. This book presents the results of the longest-running and most comprehensive study of forest fragmentation ever undertaken, the Biological Dynamics of Forest Fragments Project (BDFFP) in central Amazonia, the only experimental study of tropical forest fragmentation in which baseline data are available before isolation from continuous forest took place.A joint project of Brazil’s National Institute for Research in Amazonia and the U.S. Smithsonian Institution, the BDFFP has investigated the many effects that habitat fragmentation has on plants, invertebrates, and vertebrates. The book provides an overview of the BDFFP, reports on its case studies, looks at forest ecology and tree genetics, and considers what issues are involved in establishing conservation and management guidelines.

Download or read book Application of Tracers in Arid Zone Hydrology written by Eilon M. Adar and published by . This book was released on 1995 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Current Developments in Biotechnology and Bioengineering written by Sunita Varjani and published by Elsevier. This book was released on 2020-03-04 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt: Current Developments in Biotechnology and Bioengineering: Emerging Organic Micropollutants summarizes the current knowledge of emerging organic micropollutants in wastewater and the possibilities of their removal/elimination. This book attempts a thorough and exhaustive discussion on ongoing research and future perspectives on advanced treatment methods and future directions to maintain and protect the environment through microbiological, nanotechnological, application of membrane technology, molecular biological and by policymaking means. In addition, the book includes the latest developments in biotechnology and bioengineering pertaining to various aspects in the field of emerging organic micropollutants, including their sources, health effects and environmental impacts. Includes testing methods for the analysis and characterization of emerging organic micropollutants in wastewater Discusses the environmental impact and health hazards of emerging organic micropollutants in wastewater Provides a useful guide to identify priority areas of research demand in the remediation/removal of emerging organic micropollutants

Download or read book The New View of the Earth written by Seiya Uyeda and published by W.H. Freeman. This book was released on 1978 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 Biodiversity in the Brazilian Amazon written by João Paulo Ribeiro Capobianco and published by . This book was released on 2004 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt: A situação socioambiental da Amazônia brasileira na virada do milênio. Resultado do esforço coletivo de cientistas, técnicos de órgãos públicos e de organizações não governamentais e lideranças do movimento social, esta obra traz 27 artigos de 47 autores, mais de uma centena de mapas temáticos, extensos bancos de dados e fotos de cinco renomados fotógrafos.

Download or read book Current Developments in Biotechnology and Bioengineering written by R. D. Tyagi and published by Elsevier. This book was released on 2020-04-15 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt: Current Developments in Biotechnology and Bioengineering: Environmental and Health Impact of Hospital Wastewater narrates the origin (history) of pharmaceuticals discoveries, hospital wastewater and its environmental and health impacts. It covers microbiology of hospital wastewater (pathogens, multi-drug resistance development, microbial evolution and impacts on humans, animals, fish), advanced treatment options (including biological, physical and chemical methods), and highlights aspects required during hospital wastewater treatment processes. This book provides an amalgamation of all recent scientific information on hospital wastewater which is not available in the current literature. Introduces physical, chemical and molecular testing methods for the analysis and characterization of hospital wastewater Discusses the environmental impact and health hazards of hospital wastewater Describes the microbiological aspects of the hospital wastewater, like microbial community, metagenomics, pathogens, VBNC and mechanism of antibiotic resistance development Explains hospital wastewater and its role in microbial evolution Highlights future treatment options, guidelines and drug disposal tactics