Contribution des colloïdes à la mobilité des contaminants (Pb, As et Sb) PDF Download

Author: Bo Hu
Publisher:
ISBN:
Category :
Languages : fr
Pages : 242

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La problématique de l’évolution des anthroposols développés sur résidus miniers revêt un intérêt majeur pour évaluer les risques de transfert de pollution métallique et métalloïde et de contamination de l’environnement. Cette étude a pour objectif de caractériser la contribution des colloïdes à la mobilité du plomb, de l’arsenic et de l’antimoine dans un anthroposol développé en région Limousin (France) sur des résidus miniers issus d’une ancienne mine d’or. Pour cela, deux méthodologies différentes mais complémentaires ont été appliquées : une étude spatio-temporelle in situ et des tests de lixiviation en laboratoire. L’étude in situ a révélé des fluctuations des paramètres physico-chimiques et chimiques des solutions de sol en fonction de la profondeur et au cours du temps. Il a été observé un comportement différent à l’échelle du profil de sol de Pb par rapport à As et Sb, malgré la ressemblance géochimique entre As et Sb. Ces comportements peuvent être expliqués par la nature différente de leurs phases porteuses, ainsi que par les différences de réactivité au cours de la pédogenèse. Dans les solutions de sol, ces phases sont infra micrométriques et/ou nanométriques et leur mobilité est dépendante des conditions physico-chimiques du milieu ainsi que des caractéristiques de la matière organique du sol. Ces résultats montrent l’importance de comprendre, à l’aide d’un suivi in situ, la mobilité des métaux et métalloïdes dans des milieux complexes et riches en matière organique afin d’évaluer le risque de pollution lié aux sites et sols pollués. Les tests de lixiviations ont non seulement partiellement reproduit l’étude in situ, mais ils ont pu aussi prévoir sur le long terme à la fois la nature des matières organiques lixiviées et une contribution plus importante des colloïdes sur la mobilité des métaux et métalloïdes dans le sol. La complémentarité des tests de lixiviation en laboratoire vis-à-vis de l’étude in situ a été avérée.

Author: William J. Mitsch
Publisher: John Wiley & Sons
ISBN: 9780471332640
Category : Technology & Engineering
Languages : en
Pages : 428

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Completely updated to keep pace with current technology. * Provides a firm grounding the fundamentals, theory, and latest techniques. * Includes completely updated case studies.

Author: Jacques Berthelin
Publisher: Springer
ISBN: 9781461371205
Category : Science
Languages : en
Pages : 0

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The Working Group M.O. (Interactions of soil minerals with organic components and microorganisms) (WGMO) of the International Soil Science Society (ISSS) was founded in 1990 at the 14th World Congress of Soil Science (Kyoto, Japan), with Professor P.M. Huang being the Chairman. Since then, the Working Group M.O. has served as a forum to bring together soil chemists, soil mineralogists, soil microbiologists, soil biochemists, soil physi cists and environmental, ecological, and health scientists. The objective of the Working Group M.O. is to promote research, teaching, and also the exchange of technology concerning the knowledge and the impact of the interactions between minerals-organics and microorganisms on environmental quality, agricultural sustainability, and ecosystem "health". This group is first a scientific group as defined just previously, but it also intends to develop exchange and transfer between scientists and engineers. The first International Meeting organized by Professor P. M. Huang, was held in Edmonton, Canada, in August 1992, where 87 papers were presented by scientists from 20 countries. Following this meeting, a two volume book was edited by P. M. Huang, J. Berthelin, J.-M. Bollag, W. B. McGill, and A. L. Page, entitled "Environmental impact of soil component interaction" : Volume I "Natural and anthropogenic organic-volume II "Metals, other inorganic and microbial activities", and published by c.R.C. Lewis Pub lishers (1995).

Author: M.L. Rooney
Publisher: Springer Science & Business Media
ISBN: 1461521750
Category : Technology & Engineering
Languages : en
Pages : 272

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Food packaging materials have traditionally been chosen to avoid unwanted interactions with the food. During the past two decades a wide variety of packaging materials have been devised or developed to interact with the food. These packaging materials, which are designed to perform some desired role other than to provide an inert barrier to outside influences, are termed 'active packaging'. The benefits of active packaging are based on both chemical and physical effects. Active packaging concepts have often been presented to the food industry with few supporting results of background research. This manner of introduction has led to substantial uncertainty by potential users because claims have sometimes been based on extrapolation from what little proven information is available. The forms of active packaging have been chosen to respond to various food properties which are often unrelated to one another. For instance many packaging requirements for post harvest horticultural produce are quite different from those for most processed foods. The object of this book is to introduce and consolidate information upon which active packaging concepts are based. Scientists, technologists, students and regulators will find here the basis of those active packaging materials, which are either commercial or proposed. The book should assist the inquirer to understand how other concepts might be applied or where they should be rejected.

Author: Eric Lichtfouse
Publisher: Springer Science & Business Media
ISBN: 331902387X
Category : Science
Languages : en
Pages : 551

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Book Description
Pollution has no borders. This popular 70’s saying from early ecologists is surprisingly still true nowadays despite overwhelming scientific evidence and public awareness of the occurrence of artificial toxic substances in water, food, air, living organisms and the environment. This book presents advanced reviews on pollutant occurrence, transfer, toxicity and remediation. The chapter on school air quality by Dambruoso et al. highlights the overlooked health issue of airborne pollutants in buildings. Children are particularly threatened because they spend 90% of their time indoors, even in summer. The chapter on industrial wastewater pollutants by Dsikowitzky and Schwarzbauer reviews pollutants from textile, petrochemical, paper, tire, chemical and pharmaceutical plants. The authors describe advanced analytical methods and ecotoxicity tests. Industrial pollutants include dioxins and furans that are also reviewed in the chapter by Mudhoo et al. The chapter on fly ash by Gianoncelli et al. presents many techniques to treat fly ash and, in turn, decrease pollutant concentrations. The authors also explain that fly ash can be recycled in agriculture, buildings and geopolymers. The chapter on antifouling paints used for ship protection, by Sousa et al., highlights the occurrence of toxic organotins in human organs such as heart, liver and breast milk. The chapter on surfactants by Rebello et al. focuses on safety concerns for humans and the ecosystems. Remediation techniques and green surfactants are presented. The chapters on toxic metals by Nava-Ruíz and Méndez-Armenta, Abarikwu and Ristić et al. describe sources, monitoring and diseases induced by lead, mercury, cadmium and thallium. The chapter on carcinogenic nitrosamines by Li et al. presents techniques and materials such as zeolites to remediate liquids and smoke containing nitrosamines.

Author: D. Liebermann-Meffert
Publisher: Springer Science & Business Media
ISBN: 3662023741
Category : Medical
Languages : en
Pages : 384

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Book Description
Since RUTHERFORD MORISON left us with the concept of the Omentum being the 'abdominal policeman', clinicians have tacitly assumed that they know sufficient about the structure and function of this organ. However interest in the omentum and its relationship to clinical surgery has recently been develop ing. This book examines all aspects with special reference to surgery and should provide a welcome impetus in research and clinical practice. The editors and contributors have produced a book which is comprehensive and well illustrated and contains detailed refer ences to the important original sources - so essential in a work of this nature. It is written for those who wish to share the delight of acquiring knowledge - even about a comparatively humble organ - as well as for practical surgeons. Both will find ample information to arouse their interest and expand their surgical horizons in exciting ways of which they will almost certainly not have dreamt. I welcome a book of this calibre on a subject which deserves our increasing interest. I delight in the fact that it is dedicated to my friend and colleague MARTIN ALLGOWER.

Author: Ahmed Belasri
Publisher: Springer Nature
ISBN: 9811554447
Category : Technology & Engineering
Languages : en
Pages : 659

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Book Description
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: David A. Atwood
Publisher: John Wiley & Sons
ISBN: 1118632699
Category : Science
Languages : en
Pages : 546

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Book Description
Nuclear energy is the one energy source that could meet the world's growing energy needs and provide a smooth transition from fossil fuels to renewable energy in the coming decades and centuries. It is becoming abundantly clear that an increase in nuclear energy capacity will, and probably must, take place. However, nuclear energy and the use of radionuclides for civilian and military purposes lead to extremely long-lived waste that is costly and highly problematic to deal with. Therefore, it is critically important ot understand the environmental implications of radionuclides for ecosystems and human health if nuclear energy is to be used to avoid the impending global energy crisis. The present volume of the EIC Books series addresses this critical need by providing fundamental information on environmentally significant radionuclides. The content of this book was developed in collaboration with many of the authors of the chapters. Given the enormity of the subject the Editor and the Authors had to be judicious in selecting the chapters that would appropriately encompass and describe the primary topics, particularly those that are of importance to the health of ecosystems and humans. The resulting chapters were chosen to provide this information in a book of useful and appropriate length. Each chapter provides fundamental information on the chemistry of the radionuclides, their occurrence and movement in the enivornment, separation and analyses, and the technologies needed for their remediation and mitigation. The chapters are structured with a common, systematic format in order to facilitate comparions between elements and groups of elements. About EIC Books The Encyclopedia of Inorganic Chemistry (EIC) has proved to be one of the defining standards in inorganic chemistry, and most chemistry libraries around the world have access either to the first of second print editon, or to the online version. Many readers, however, prefer to have more concise thematic volumes, targeted to their specific area of interest. This feedback from EIC readers has encouraged the Editors to plan a series of EIC Books, focusing on topics of current interest. They will appear on a regular basis, and will feature leading scholars in their fields. Like the Encyclopedia, EIC Books aims to provide both the starting research student and the confirmed research worker with a critical distillation of the leading concepts in inorganic and bioinorganic chemistry, and provide a structured entry into the fields covered. This volume is also available as part of Encyclopedia of Inorganic Chemistry, 5 Volume Set. This set combines all volumes published as EIC Books from 2007 to 2010, representing areas of key developments in the field of inorganic chemistry published in the Encyclopedia of Inorganic Chemistry. Find out more.

Author:
Publisher:
ISBN:
Category : Hazardous waste site remediation
Languages : en
Pages : 176

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Author: George R. Gobran
Publisher: CRC Press
ISBN: 1420039997
Category : Science
Languages : en
Pages : 338

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The first book devoted to the complex interactions between trace elements, soils, plants, and microorganisms in the rhizosphere, Trace Elements in the Rhizosphere brings together the experimental, investigative, and modeling branches of rhizosphere research. Written by an international team of authors, it provides a comprehensive overview of the me