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Book Description
CETTE RECHERCHE S'INSCRIT DANS LA PROBLEMATIQUE GENERALE DE L'EVALUATION ENVIRONNEMENTALE DES DECHETS STABILISES ET EST CONSACREE A L'ETUDE DES TRANSFERTS DE POLLUANTS DES DECHETS SOLIDIFIES AU CONTACT DE L'EAU ET AU DEVELOPPEMENT D'UN MODELE D'INTERPRETATION ET DE SIMULATION. LE COMPORTEMENT A LA LIXIVIATION DE POLLUANTS (PLOMB ET ARSENIC) SOLIDIFIES DANS UNE MATRICE CIMENT (CPA) A ETE ETUDIE EN RELATION AVEC DIFFERENTS CONTEXTES. LE CONTROLE DU RELARGAGE PAR LA SOLUBILITE DES ESPECES DANS LE CONTEXTE CHIMIQUE DE L'EAU DES PORES DE LA MATRICE CIMENT ET PAR L'EVOLUTION DU PH A L'INTERIEUR DE LA MATRICE (NOTAMMENT A L'INTERFACE SOLIDE-LIQUIDE) A ETE MONTRE ET LA NECESSITE DU COUPLAGE CHIMIE/TRANSPORT POUR LES ESPECES SENSIBLES AU CONTEXTE PHYSICO-CHIMIQUE CONFIRMEE. UN MODELE DE TRANSFERT DE MATIERE COUPLANT DISSOLUTION ET DIFFUSION A ETE DEVELOPPE POUR DECRIRE LE RELARGAGE DES ESPECES SOLUBLES CONTENUES DANS UN MILIEU SOLIDE POREUX EN CONTACT AVEC L'EAU ET APPLIQUE PLUS PARTICULIEREMENT AU CAS D'UN MILIEU POREUX CONTENANT DE L'HYDROXYDE DE CALCIUM ET DE L'HYDROXYDE DE PLOMB (CAS TYPIQUE D'UN DECHET SOLIDIFIE A BASE DE CIMENT PORTLAND CONTENANT DU PLOMB). POUR VALIDER CE MODELE UNE DEMARCHE EXPERIMENTALE CONSISTANT A ETUDIER LA LIXIVIATION D'UN MILIEU POREUX CREE ARTIFICIELLEMENT POUR UNE BONNE CONNAISSANCE ET UN BON CONTROLE DU MILIEU D'ETUDE A ETE DEVELOPPEE. CE MILIEU EST OBTENU PAR FRITTAGE D'UN MELANGE DE POUDRE DE VERRE (SQUELETTE DE LA MATRICE) ET D'HYDROXYDE DE CALCIUM AUQUEL LES POLLUANTS SONT AJOUTES. APPLIQUE AU CAS DE LA LIXIVIATION A L'EAU DEMINERALISEE DES MATRICES CIMENT CONTENANT DU PLOMB, LE MODELE A PERMIS DE MONTRER QUE LE RELARGAGE DU PLOMB SEMBLE REGI PAR UN PHENOMENE DE SOLUBILISATION A L'INTERFACE SOLIDE LIQUIDE. DANS CE CAS UN MODELE PRENANT EN COMPTE L'EVOLUTION DU PH A L'INTERFACE ET LA SOLUBILITE VARIABLE EN FONCTION DE CE PH PERMET DE RENDRE QUALITATIVEMENT COMPTE DES PHENOMENES
Book Description
CETTE RECHERCHE S'INSCRIT DANS LA PROBLEMATIQUE GENERALE DE L'EVALUATION ENVIRONNEMENTALE DES DECHETS STABILISES ET EST CONSACREE A L'ETUDE DES TRANSFERTS DE POLLUANTS DES DECHETS SOLIDIFIES AU CONTACT DE L'EAU ET AU DEVELOPPEMENT D'UN MODELE D'INTERPRETATION ET DE SIMULATION. LE COMPORTEMENT A LA LIXIVIATION DE POLLUANTS (PLOMB ET ARSENIC) SOLIDIFIES DANS UNE MATRICE CIMENT (CPA) A ETE ETUDIE EN RELATION AVEC DIFFERENTS CONTEXTES. LE CONTROLE DU RELARGAGE PAR LA SOLUBILITE DES ESPECES DANS LE CONTEXTE CHIMIQUE DE L'EAU DES PORES DE LA MATRICE CIMENT ET PAR L'EVOLUTION DU PH A L'INTERIEUR DE LA MATRICE (NOTAMMENT A L'INTERFACE SOLIDE-LIQUIDE) A ETE MONTRE ET LA NECESSITE DU COUPLAGE CHIMIE/TRANSPORT POUR LES ESPECES SENSIBLES AU CONTEXTE PHYSICO-CHIMIQUE CONFIRMEE. UN MODELE DE TRANSFERT DE MATIERE COUPLANT DISSOLUTION ET DIFFUSION A ETE DEVELOPPE POUR DECRIRE LE RELARGAGE DES ESPECES SOLUBLES CONTENUES DANS UN MILIEU SOLIDE POREUX EN CONTACT AVEC L'EAU ET APPLIQUE PLUS PARTICULIEREMENT AU CAS D'UN MILIEU POREUX CONTENANT DE L'HYDROXYDE DE CALCIUM ET DE L'HYDROXYDE DE PLOMB (CAS TYPIQUE D'UN DECHET SOLIDIFIE A BASE DE CIMENT PORTLAND CONTENANT DU PLOMB). POUR VALIDER CE MODELE UNE DEMARCHE EXPERIMENTALE CONSISTANT A ETUDIER LA LIXIVIATION D'UN MILIEU POREUX CREE ARTIFICIELLEMENT POUR UNE BONNE CONNAISSANCE ET UN BON CONTROLE DU MILIEU D'ETUDE A ETE DEVELOPPEE. CE MILIEU EST OBTENU PAR FRITTAGE D'UN MELANGE DE POUDRE DE VERRE (SQUELETTE DE LA MATRICE) ET D'HYDROXYDE DE CALCIUM AUQUEL LES POLLUANTS SONT AJOUTES. APPLIQUE AU CAS DE LA LIXIVIATION A L'EAU DEMINERALISEE DES MATRICES CIMENT CONTENANT DU PLOMB, LE MODELE A PERMIS DE MONTRER QUE LE RELARGAGE DU PLOMB SEMBLE REGI PAR UN PHENOMENE DE SOLUBILISATION A L'INTERFACE SOLIDE LIQUIDE. DANS CE CAS UN MODELE PRENANT EN COMPTE L'EVOLUTION DU PH A L'INTERFACE ET LA SOLUBILITE VARIABLE EN FONCTION DE CE PH PERMET DE RENDRE QUALITATIVEMENT COMPTE DES PHENOMENES
Author: G.J. Senden Publisher: Elsevier ISBN: 0080543669 Category : Technology & Engineering Languages : en Pages : 903
Book Description
This book presents the proceedings of the 3rd International Conference on Waste Materials in Construction, held in June 1997. The papers presented give the state of the art on leaching of materials and products, demonstration projects and product development. Results of workshops on immobilisation and quality control are also presented. A good overview of the latest results on the application of various materials in construction, based on both technical and environmental data, is provided. The book provides a unique opportunity for environmental researchers, environmental consultants, policy-makers, and those involved in the construction industry to gain the latest information on the subject.
Author: L. Heasman Publisher: Elsevier ISBN: 0080533302 Category : Technology & Engineering Languages : en Pages : 293
Book Description
This is a unique compilation on the use of leaching/extraction methods in different fields. The use of leaching test methods is increasing in various areas including: waste treatment and disposal; incineration of waste; soil clean-up and reuse of cleaned soil; sludge treatment. This has led to (and may increasingly lead to) the development of a large number of very similar tests in these different fields. However, these developments are taking place with no clear understanding of their mutual relationships. In view of these developments, efforts are needed to harmonize the leaching procedures that could be adapted for different matrices, as well as validate the use of existing tests in other fields. The development of a wide variety of leaching/extraction tests for different matrices is undesirable from a regulatory point of view and undesirable for industry. Clarity in testing is crucial in producer-consumer relations. This collective document will assist in improving the understanding of leaching from a variety of sources and will, where appropriate, help to bring together the approaches used in different technical fields and in different countries.
Author: Linda Strande Publisher: IWA Publishing ISBN: 1780404735 Category : Technology & Engineering Languages : en Pages : 428
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.
Author: Zdenek Bittnar Publisher: Springer Science & Business Media ISBN: 3642009808 Category : Technology & Engineering Languages : en Pages : 432
Book Description
The 3rd International Symposium on Nanotechnology in Construction (NICOM 3) follows the highly successful NICOM 1 (Paisley, UK 2003) and NICOM 2 (Bilbao, Spain 2005) Symposia. The NICOM3 symposium was held in Prague, Czech Republic from May 31 to June 2, 2009 under the auspices of the Czech Technical University in Prague. It was a cross-disciplinary event, bringing together R&D experts and users from different fields all with interest in nanotechnology and construction. The conference was aimed at: Understanding of internal structures of existing construction materials at nano-scale Modification at nano-scale of existing construction materials. Production and properties of nanoparticulate materials, nanotubes and novel polymers. Modeling and simulation of nanostructures. Instrumentation, techniques and metrology at nano-scale. Health and safety issues and environmental impacts related to nanotechnology during research, manufacture and product use. Review of current legislation. Societal and commercial impacts of nanotechnology in construction, their predictions and analysis.
Author: Th.G. Aalbers Publisher: Elsevier ISBN: 008087519X Category : Technology & Engineering Languages : en Pages : 1005
Book Description
The concept of Sustainable Development, implicating the protection of soil and groundwater, the limitation of waste production and the re-use of soild waste materials is still the leading theme of WASCON '94. Although it is clearly recognized in most countries that products derived from solid waste materials can be applied as construction materials, research is still needed to assess various environmental problems.
Author: International Atomic Energy Agency Publisher: International Atomic Energy Agency ISBN: 9789201063205 Category : Technology & Engineering Languages : en Pages : 72
Book Description
This publication results from a technical meeting on phenomenology and technologies relevant to in-vessel melt retention (IVMR) and ex-vessel corium cooling (EVCC). The purpose of the publication is to capture the state of knowledge, at the time of that meeting, related to phenomenology and technologies as well as the challenges and pending issues relevant to IVMR and EVCC for water cooled reactors by summarizing the information provided by the meeting participants in a form useful to practitioners in Member States.
Author: David M. Robbins Publisher: IWA Publishing ISBN: 178040476X Category : Science Languages : en Pages : 148
Book Description
This is a practical handbook providing a step-by-step approach to the techniques used for characterizing wastewater sources and investigating sites where collection, treatment and reuse/disposal technologies will be installed. It is intended to help enable local implementation of on-site and decentralized wastewater management system (DWMS)for wide scale use in development settings. How to Design Wastewater Systems for Local Conditions in Developing Countries helps local service providers and regulatory officials make informed decisions through the use of tools, checklists and case studies. It includes a link to a web based community of on-site and decentralized wastewater professionals, which contains related tools and case studies. This handbook serves as a reference for training classes, certification programs, and higher education programs in civil and sanitary engineering. There is an increasing interest on the part of local government officials and private sector service providers to implement wastewater treatment systems to solve sanitation problems. The model presented in this handbook promotes activities that first generate data related to source and site conditions that represent critical inputs, and then applies this information to the technology selection process. Matching the most appropriate technologies to the specific needs of the wastewater project is the key that leads to long term sustainability. How to Design Wastewater Systems for Local Conditions in Developing Countries is an invaluable resource for public sector decision makers and private sector service providers in developing countries. It is also a useful text for students at engineering colleges in developing countries interested in taking a class that teaches the methods of decentralized wastewater management system (DWMS) development.
Author: FLORENCE.. SANCHEZ
Author: FLORENCE.. SANCHEZ
Author: G.J. Senden
Author: L. Heasman
Author: Linda Strande
Author: Zdenek Bittnar
Author: 
Author: Th.G. Aalbers
Author: International Atomic Energy Agency
Author: 
Author: David M. Robbins