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Author : Michel Rubaud
Publisher :
ISBN 13 :
Total Pages : 22 pages
Book Rating : 4.:/5 (618 download)
Download or read book Recyclage et valorisation des dechets des materiaux mineraux utilises dans la construction written by Michel Rubaud and published by . This book was released on 1994 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 34 pages
Book Rating : 4.:/5 (428 download)
Download or read book Directives pour la valorisation des déchets de chantier minéraux written by and published by . This book was released on 2006 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : PASCAL.. MULLER
Publisher :
ISBN 13 :
Total Pages : 213 pages
Book Rating : 4.:/5 (49 download)
Download or read book GESTION DES DECHETS MINERAUX INDUSTRIELS written by PASCAL.. MULLER and published by . This book was released on 1997 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt: LA GESTION ACTUELLE DES EFFLUENTS LIQUIDES CONTENANT DES METAUX LOURDS PASSE PAR DES TRAITEMENTS QUI CONDUISENT A L'OBTENTION DE BOUES D'HYDROXYDES METALLIQUES DONT LA MISE EN DECHARGE POSE UN PROBLEME DE COUT ET DE CAPACITE D'ACCUEIL DES SITES DE STOCKAGE. LA RECHERCHE DE NOUVELLES VOIES DE TRAITEMENT DE CES DECHETS MINERAUX, PRINCIPALEMENT CEUX CHARGES EN FER ET EN ZINC, DOIT PERMETTRE, PAR DES OPERATIONS D'INERTAGE CHIMIQUE ET DE VALORISATION MATIERE, DE LIMITER VOIR D'EVITER LA MISE EN DECHARGE. LEUR PRINCIPE REPOSE SUR UNE SELECTIVITE DE LA REACTIVITE CHIMIQUE DES ESPECES METALLIQUES PRESENTES. LA PREMIERE VOIE ENVISAGEE CORRESPOND A UNE RECHERCHE DE STABILISATION CHIMIQUE SOUS FORME DE SULFURE INSOLUBLE DES FORMES MINERALOGIQUES DU ZINC PRESENTS DANS LES BOUES D'HYDROXYDES METALLIQUES EN METTANT A PROFIT LA REACTIVITE DE SOLUTIONS DE POLYSULFURES. LE PROCEDE APPLIQUE A DES BOUES SYNTHETIQUES PUIS INDUSTRIELLES DEMONTRE QUE LE DECHET PEUT ETRE INERTE A TEMPERATURE AMBIANTE ET POUR DES TEMPS DE TRAITEMENT COMPATIBLES AVEC LES IMPERATIFS INDUSTRIELS. UN SECOND PROCEDE PERMET LA DETOXICATION DU DECHET PAR EXTRACTION DES ELEMENTS POLLUANTS ET LE RECYCLAGE DES PRODUITS OBTENUS EN VU D'UNE VALORISATION MATIERE. L'UTILISATION DE LIGANDS MINERAUX COMME LES THIOSULFATES ET DE LIGANDS ORGANIQUES DE LA FAMILLE DES POLYETHYLENE-POLYAMINES PERMET L'OBTENTION DE REACTIFS LIXIVIANTS CONJUGUANT EFFET DE PH ET DE COMPLEXATION. LA SOLUBILITE IMPORTANTE DES FORMES ZNO ET ZN(OH)#2 DANS CES MILIEUX PERMET D'ENVISAGER UN TRAITEMENT SIMILAIRE SUR LES BOUES D'HYDROXYDES. UNE ETUDE CINETIQUE DE LA LIXIVIATION MONTRE QU'IL EST POSSIBLE D'EXTRAIRE DANS DES CONDITIONS ECONOMIQUES ET TECHNOLOGIQUES ACCEPTABLES LA QUASI-TOTALITE DU ZINC PRESENT DANS LE SOLIDE SANS ENTRAINEMENT DE FER. LA DERNIERE VOIE ETUDIEE PROPOSE DE MENER DES OPERATIONS DE PRECIPITATION SELECTIVE DES CATIONS METALLIQUES PRESENTS DANS L'EFFLUENT, EN AMONT DES TRAITEMENTS PHYSICO-CHIMIQUES CLASSIQUES. LES PROPRIETES OXYDOREDUCTRICES ET SULFURANTES DES POLYSULFURES PERMETTENT DE PRECIPITER, DANS DES SOLUTIONS MIXTES DE FER-ZINC-NICKEL, LE SULFURE DE ZINC OU DE NICKEL SANS ENTRAINER LA PRECIPITATION DU FER. CE TYPE DE PROTOCOLE APPLIQUE A DES EFFLUENTS INDUSTRIELS CONDUIT A LA RECUPERATION DES SULFURES DES METAUX LOURDS AVANT LA PRECIPITATION DES HYDROXYDES DE FER. LES RESIDUS SULFURES AINSI QUE LES HYDROXYDES DE FER POURRAIENT ETRE REORIENTES VERS DES FILIERES DE VALORISATION OU DE RECYCLAGE.
Author : Pascal Muller
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (1 download)
Download or read book Gestion des déchets minéraux industriels written by Pascal Muller and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: La gestion actuelle des effluents liquides contenant des métaux lourds passe par des traitements qui conduisent à l'obtention de boues d'hydroxydes métalliques dont la mise en décharge pose un problème de cout et de capacité d'accueil des sites de stockage. La recherche de nouvelles voies de traitement de ces déchets minéraux, principalement ceux charges en fer et en zinc, doit permettre, par des opérations d'inertage chimique et de valorisation matière, de limiter voir d'éviter la mise en décharge. Leur principe repose sur une sélectivité de la réactivité chimique des espèces métalliques présentes. La première voie envisagée correspond à une recherche de stabilisation chimique sous forme de sulfure insoluble des formes minéralogiques du zinc présents dans les boues d'hydroxydes métalliques en mettant à profit la réactivité de solutions de polysulfures. Le procédé appliqué à des boues synthétiques puis industrielles démontre que le déchet peut être inerte à température ambiante et pour des temps de traitement compatibles avec les impératifs industriels. Un second procédé permet la détoxication du déchet par extraction des éléments polluants et le recyclage des produits obtenus en vue d'une valorisation matière. L'utilisation de ligands minéraux comme les thiosulfates et de ligands organiques de la famille des polyéthylène-polyamines permet l'obtention de réactifs lixiviants conjuguant effet de pH et de complexation. La solubilité importante des formes ZnO et Zn(OH)2 dans ces milieux permet d'envisager un traitement similaire sur les boues d'hydroxydes. Une étude cinétique de la lixiviation montre qu'il est possible d'extraire dans des conditions économiques et technologiques acceptables la quasi-totalité du zinc présent dans le solide sans entrainement de fer. La dernière voie étudiée propose de mener des opérations de précipitation sélective des cations métalliques présents dans l'effluent, en amont des traitements physico-chimiques classiques. Les propriétés oxydoréductrices et sulfurantes des polysulfures permettent de précipiter, dans des solutions mixtes de fer-zinc-nickel, le sulfure de zinc ou de nickel sans entrainer la précipitation du fer. Ce type de protocole appliqué à des effluents industriels conduit à la récupération des sulfures des métaux lourds avant la précipitation des hydroxydes de fer. Les résidus sulfures ainsi que les hydroxydes de fer pourraient être réorientés vers des filières de valorisation ou de recyclage.
Author : Linda Strande
Publisher : IWA Publishing
ISBN 13 : 1780404735
Total Pages : 428 pages
Book Rating : 4.7/5 (84 download)
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.
Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309112826
Total Pages : 263 pages
Book Rating : 4.3/5 (91 download)
Download or read book Minerals, Critical Minerals, and the U.S. Economy written by National Research Council and published by National Academies Press. This book was released on 2008-03-11 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: Minerals are part of virtually every product we use. Common examples include copper used in electrical wiring and titanium used to make airplane frames and paint pigments. The Information Age has ushered in a number of new mineral uses in a number of products including cell phones (e.g., tantalum) and liquid crystal displays (e.g., indium). For some minerals, such as the platinum group metals used to make cataytic converters in cars, there is no substitute. If the supply of any given mineral were to become restricted, consumers and sectors of the U.S. economy could be significantly affected. Risks to minerals supplies can include a sudden increase in demand or the possibility that natural ores can be exhausted or become too difficult to extract. Minerals are more vulnerable to supply restrictions if they come from a limited number of mines, mining companies, or nations. Baseline information on minerals is currently collected at the federal level, but no established methodology has existed to identify potentially critical minerals. This book develops such a methodology and suggests an enhanced federal initiative to collect and analyze the additional data needed to support this type of tool.
Author :
Publisher : UN
ISBN 13 : 9789280732672
Total Pages : 0 pages
Book Rating : 4.7/5 (326 download)
Download or read book Metal Recycling written by and published by UN. This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal recycling is a complex business that is becoming increasingly difficult! Recycling started long ago, when people realized that it was more resource- and cost-efficient than just throwing away the resources and starting all over again. In this report, we discuss how to increase metal-recycling rates - and thus resource efficiency - from both quantity and quality viewpoints. The discussion is based on data about recycling input, and the technological infrastructure and worldwide economic realities of recycling. Decision-makers set increasingly ambitious targets for recycling, but far too much valuable metal today is lost because of the imperfect collection of end-of-life (EoL) products, improper practices, or structural deficiencies within the recycling chain, which hinder achieving our goals of high resource efficiency and resource security, and of better recycling rates.
Author : Ahmed Belasri
Publisher : Springer Nature
ISBN 13 : 9811554447
Total Pages : 659 pages
Book Rating : 4.8/5 (115 download)
Download or read book ICREEC 2019 written by Ahmed Belasri and published by Springer Nature. This book was released on 2020-06-10 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights peer reviewed articles from the 1st International Conference on Renewable Energy and Energy Conversion, ICREEC 2019, held at Oran in Algeria. It presents recent advances, brings together researchers and professionals in the area and presents a platform to exchange ideas and establish opportunities for a sustainable future. Topics covered in this proceedings, but not limited to, are photovoltaic systems, bioenergy, laser and plasma technology, fluid and flow for energy, software for energy and impact of energy on the environment.
Author : Nik Heynen
Publisher : Routledge
ISBN 13 : 1134206461
Total Pages : 292 pages
Book Rating : 4.1/5 (342 download)
Download or read book In the Nature of Cities written by Nik Heynen and published by Routledge. This book was released on 2006-03-23 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: The social and material production of urban nature has recently emerged as an important area in urban studies, human/environmental interactions and social studies. This has been prompted by the recognition that the material conditions that comprise urban environments are not independent from social, political, and economic processes, or from the cultural construction of what constitutes the ‘urban’ or the ‘natural’. Through both theoretical and empirical analysis, this groundbreaking collection offers an integrated and relational approach to untangling the interconnected processes involved in forming urban landscapes. The essays in this book attest that the re-entry of the ecological agenda into urban theory is vital both in terms of understanding contemporary urbanization processes, and of engaging in a meaningful environmental politics. They debate the central themes of whose nature is, or becomes, urbanized, and the uneven power relations through which this socio-metabolic transformation takes place. Including urban case studies, international research and contributions from prominent urban scholars, this volume will enable students, scholars and researchers of geographical, environmental and urban studies to better understand how interrelated, everyday economic, political and cultural processes form and transform urban environments.
Author : Stuart Hill
Publisher : Birkhäuser
ISBN 13 : 3034863101
Total Pages : 364 pages
Book Rating : 4.0/5 (348 download)
Download or read book Basic Technics in Ecological Farming / Techniques de Base en Agriculture Biologique / Grundsätzliche Verfahren der ökologischen Landwirtschaft / Le Maintien de la Fertilité des Sols / The Maintenance of Soil Fertility / Die Erhaltung der Bodenfruchtbarkeit written by Stuart Hill and published by Birkhäuser. This book was released on 2013-12-14 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : R. M. Harrison
Publisher : Royal Society of Chemistry
ISBN 13 : 1788012410
Total Pages : 208 pages
Book Rating : 4.7/5 (88 download)
Download or read book Plastics and the Environment written by R. M. Harrison and published by Royal Society of Chemistry. This book was released on 2018-11-20 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the role of plastics in society and examines the environmental impact of different types of plastics.
Author : P. L'Hermite
Publisher : Springer
ISBN 13 : 9789027712943
Total Pages : 0 pages
Book Rating : 4.7/5 (129 download)
Download or read book Characterization, Treatment and Use of Sewage Sludge written by P. L'Hermite and published by Springer. This book was released on 1981-05-31 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the Second European Symposium held in Vienna, Austria, 21-23 October, 1980
Author : Willem Willems
Publisher :
ISBN 13 : 9789088903861
Total Pages : 434 pages
Book Rating : 4.9/5 (38 download)
Download or read book Water & Heritage written by Willem Willems and published by . This book was released on 2017-01-15 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water is vital for life, and its availability has been a concern for mankind throughout the ages. Its presence has always been ascertained in a variety of ways and the development of human society everywhere is connected with various forms of water management. Man also needed to manage water to find protection from its dangers and the need for that is increasing. In the coming decades, the impact of climate change is expected to intensify floods and droughts, affect groundwater resources, raise sea levels, increase pollution and enhance the frequency and magnitude of disasters. Societies around the world are challenged to adapt to these threats to ensure water security, economic prosperity and environmental and cultural sustainability. This book deals with the heritage of water management and the use that was made of water, as well as the impact of water management on heritage. An example of the former may be an ancient irrigation system in the Filipines or in the Middle East that still functions today, while the latter may reflect the importance of maintaining groundwater levels for the preservation of organic remains on archaeological sites or of wooden piles underneath standing buildings. In either case the papers in this book reflect the dynamic nature of water, and hence the equally dynamic relation between water management and heritage. This publication follows up on a Heritage and Water conference in Amsterdam, the first of its kind. Its main purpose is to credibly present the importance and value of heritage and historical experience for water and sustainable development, and vice versa, present the importance of water management for the protection of heritage. It presents evolving insights and concepts about Water and about Heritage from a variety of disciplines, policy and public perspectives illustrated with cases studies and aims to connect decision makers with experts such as engineers, archaeologists, historians, geographers, ecologist and landscape architects
Author : Food and Agriculture Organization of the United Nations
Publisher : Food & Agriculture Org.
ISBN 13 : 9789251039809
Total Pages : 40 pages
Book Rating : 4.0/5 (398 download)
Download or read book Risk Management and Food Safety written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 1997 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Risk analysis is widely recognised as the fundamental methodology underlying the development of food safety standards. As recognised in the 1995 consultation, risk analysis is composed of three separate but integrated elements, namely risk assessment, risk management and risk communication. That consultation recognised risk communication as an interactive process of exchange of information and opinion on risk among risk assessors, risk managers, and other interested parties. Risk management is defined within Codex as the process of weighing policy alternatives in the light of the results of risk assessment and, if required, selecting and implementing appropriate control options, including regulatory measures. The outcome of the risk management process, as undertaken by Committees within the Codex Alimentarius system, is the development of standards, guidelines and other recommendations for food safety, m the national situation it is likely that different risk management decisions could be made according to different criteria and different ranges of risk management options. The overall objective of Codex is to ensure consumer protection and to facilitate international trade.
Author : Food and Agriculture Organization of the United Nations
Publisher : Food & Agriculture Org.
ISBN 13 : 9789251045411
Total Pages : 20 pages
Book Rating : 4.0/5 (454 download)
Download or read book What is the Code of Conduct for Responsible Fisheries? written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2001 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: The actual Code of conduct is also available (1996) (ISBN 9251038341).
Author : R. Kuehr
Publisher : Springer Science & Business Media
ISBN 13 : 9401000336
Total Pages : 306 pages
Book Rating : 4.4/5 (1 download)
Download or read book Computers and the Environment: Understanding and Managing their Impacts written by R. Kuehr and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: Personal computers have made life convenient in many ways, but what about their impacts on the environment due to production, use and disposal? Manufacturing computers requires prodigious quantities of fossil fuels, toxic chemicals and water. Rapid improvements in performance mean we often buy a new machine every 1-3 years, which adds up to mountains of waste computers. How should societies respond to manage these environmental impacts? This volume addresses the environmental impacts and management of computers through a set of analyses on issues ranging from environmental assessment, technologies for recycling, consumer behaviour, strategies of computer manufacturing firms, and government policies. One conclusion is that extending the lifespan of computers (e.g. through reselling) is an environmentally and economically effective strategy that deserves more attention from governments, firms and the general public.
Author : Sabu Thomas
Publisher : Springer Nature
ISBN 13 : 9811596433
Total Pages : 621 pages
Book Rating : 4.8/5 (115 download)
Download or read book Green Composites written by Sabu Thomas and published by Springer Nature. This book was released on 2021-01-18 with total page 621 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents important developments in green chemistry, with a particular focus on composite materials chemistry. In recent years, natural polymers have generated much interest due to their unique morphology and physical properties. The book gives an introductory overview of green composites, and discusses their emerging interdisciplinary applications in various contemporary fields. The chapters, written by leading experts from industry and academia, cover different aspects of biodegradable green composites and natural polymers including their processing, manufacturing, properties, and applications. This book will be a valuable reference for beginners, researchers as well as industry professionals interested in biodegradable composites.
