Modélisation et évaluation des équilibres de complexation entre la matière organique naturelle, les métaux traces et le proton

Modélisation et évaluation des équilibres de complexation entre la matière organique naturelle, les métaux traces et le proton PDF Author: Cédric Garnier
Publisher:
ISBN:
Category :
Languages : fr
Pages : 200

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Book Description
Une méthode d’analyse et de modélisation des propriétés de complexation et d’acidité de la MON a été mise au point, en représentant ses interactions par des paramètres fiables, et en s’affranchissant de la structure exacte des composés organiques la constituant. Les propriétés de la MON ont été modélisées à l’aide de quasi-particules reproduisant ses interactions non-spécifiques et spécifiques. Un logiciel d’optimisation de paramètres de complexation a été développé: PROSECE. Couplé à une nouvelle technique d’ajouts logarithmiques, il s’est montré nettement plus approprié que les autres traitements de données. Les interactions MON-proton et MON-métaux traces ont été analysées respectivement par titration acido-basique, et par titration logarithmique et mesure par DPASV. Le modèle chimique développé, associé aux techniques analytiques et à l’utilisation de PROSECE ont permis d’étudier les propriétés de complexation et d’acidité de différentes MON d’origines variées

Rates of Soil Chemical Processes

Rates of Soil Chemical Processes PDF Author: Donald L. Sparks
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 328

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Book Description
Kinetics of soil chemical reactions. Methods of obtaining and analyzin kinetic data. Relaxation methods for studying kinetics of soil chemical phenomena. Kinetics of ion sorptionon humic substances. Kinetics of sorption/desorption processes in soils. Modelling nonequilibrium reactions of inorganic solutes in soil columns. Sorption kinetics of organic chemicals: methods, models, and mechanisms.

ICREEC 2019

ICREEC 2019 PDF 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.

Faecal Sludge Management

Faecal Sludge Management PDF Author: Linda Strande
Publisher: IWA Publishing
ISBN: 1780404735
Category : Technology & Engineering
Languages : en
Pages : 428

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Book Description
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.

Plants that Hyperaccumulate Heavy Metals

Plants that Hyperaccumulate Heavy Metals PDF Author: R. R. Brooks
Publisher: Cabi
ISBN:
Category : Science
Languages : en
Pages : 400

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Book Description
1. General introduction, R.R. Brooks; 2. Phytochemistry of hyperaccumulators, R.R. Brooks; 3. Geobotany and hyperaccumulators, R.R. Brooks; 4. Biogeochemistry and hyperaccumulators, R.R. Brooks; 5. Seaweeds as hyperaccumulators, C.E. Dunn; 6. Hyperaccumulation of metals by prokaryotic microorganisms including blue-green algae (cyanobacteria), T.J. Beveridge; 7. Phytoarcheology and hyperaccumulators, R.R. Brooks; 8. Hyperaccumulation as a plant defensive strategy, R.S. Boyd; 9. Aquatic phytoremediation by accumulator plants, R.R. Brooks and B.H. Robinson; 10. Revegetation and stabilisation of mine dumps and other degraded terrain, R.R. Brooks, A. Chiarucci and T. Jaffre; 11. Fertilisation of hyperaccumulators to enhance their potential for phytoremediation and phytomining, F.A. Bennett, E.K. Tyler, R.R. Brooks, P.E.H. Gregg and R.B. Stewart; 12. Phytoextraction for soil remediation, S.P. McGrath; 13. Phytoremediation by volatilisation, R.R. Brooks 14. A pioneering study of the potential of phytomining for nickel, L.J. Nicks and M.F. Chambers; 15. The potential use of hyperaccumulators and other plants for phytomining, R.R. Brooks and B.H. Robinson.

Electron Spin Resonance (ESR) Applications in Organic and Bioorganic Materials

Electron Spin Resonance (ESR) Applications in Organic and Bioorganic Materials PDF Author: B. Catoire
Publisher: Springer
ISBN:
Category : Medical
Languages : en
Pages : 328

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Book Description
"Publication partially sponsored by MRT (French Ministry of Research and Technology."

Model Cellulosic Surfaces

Model Cellulosic Surfaces PDF Author: Maren Roman
Publisher: OUP USA
ISBN: 9780841269651
Category : Science
Languages : en
Pages : 0

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Book Description
This book provides an overview of the different methods of model cellulosic surface preparation and presents recent studies on the properties of these surfaces. The topics covered are considered relatively new and would serve as the launch pad for further research in this area.

Scientific Basis for Nuclear Waste Management XXII: Volume 556

Scientific Basis for Nuclear Waste Management XXII: Volume 556 PDF Author: David J. Wronkiewicz
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 1370

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Book Description
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.

Uranium-series Geochemistry

Uranium-series Geochemistry PDF Author: Bernard Bourdon
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 1501509306
Category : Science
Languages : en
Pages : 676

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Book Description
Volume 52 of Reviews in Mineralogy and Geochemistry updates our knowledge of U-series geochemistry, offer an opportunity for non-specialists to understand its basic principles, and give us a view of the future of this active field of research. In this volume, for the first time, all the methods for determining the uranium and thorium decay chain nuclides in Earth materials are discussed. It was prepared in advance of a two-day short course (April 3-4, 2003) on U-series geochemistry, jointly sponsored by GS and MSA and presented in Paris, France prior to the joint EGS/AGU/EUG meeting in Nice.

Interactions at the Soil Colloid

Interactions at the Soil Colloid PDF Author: G.H. Bolt
Publisher: Springer Science & Business Media
ISBN: 9401719098
Category : Nature
Languages : en
Pages : 605

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Book Description
About 20 years ago the emphasis in soil chemistry research switched from studies of problems related to scarcities of plant nutrients to those arising from soil pollutants. The new problems have come about because of the excessive uses of fertilizers, the inputs from farm and industrial wastes, the widespread applications of anthropogenie xenobiotic chemicals, and the deterioration of soil structure resulting from certain modern agriculture practises. The International Society of Soil Science (ISSS) recognized these problems and challenges. A provisional Working Group was set up in 1978 to focus attention on soil colloids with a view to understanding better the interactions wh ich take place at their surfaces. It was recognized that these interactions are fundamental to problems of soil fertility, as weIl as to those of soil pollution. After the group had received the official support of ISSS at its 12th International Congress in New Delhi in 1982 it set as its priority the assembling and evaluation of information, relevant to the soil and environmental sciences, concerning the composition and structure of soil colloids. Prior to that aseries of Position Papers were published in the Bulletin of the International Society of Soil Science (Vol. 61, 1981) outlining the state of knowledge about the composition and properties of soil colloids.