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Author: Natacha Ricq
Publisher:
ISBN:
Category :
Languages : fr
Pages : 258
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Book Description
LE PROCEDE D'OXYDATION HYDROTHERMALE (OHT) CONSISTE A MINERALISER LA MATIERE ORGANIQUE EN PRESENCE D'EAU ET D'UN OXYDANT, A HAUTE PRESSION ET HAUTE TEMPERATURE, ET IL A POUR PRINCIPAL AVANTAGE DE PRODUIRE DES EFFLUENTS GAZEUX PROPRES ET DES EFFLUENTS LIQUIDES BIODEGRADABLES. CETTE TECHNOLOGIE REPRESENTE UNE ALTERNATIVE INTERESSANTE A L'INCINERATION ET AU TRAITEMENT BIOLOGIQUE POUR DES DECHETS DILUES OU TOXIQUES, ET S'ADAPTE PARTICULIEREMENT AU TRAITEMENT DES BOUES DE STATIONS D'EPURATION URBAINES. CE TRAVAIL A DONC CONSISTE DANS UN PREMIER TEMPS A OPTIMISER LE RENDEMENT DE DEGRADATION SUR UNE BOUE SECONDAIRE BIOLOGIQUE. DANS UN DEUXIEME TEMPS, UNE ETUDE A ETE MENEE SUR LES SOUS-PRODUITS DE DEGRADATION ET SUR LE MECANISME REACTIONNEL A PARTIR D'UN COMPOSE MODELE : LA CELLULOSE. UN PLAN SIMPLEX A QUATRE PARAMETRES (TEMPERATURE, PRESSION D'AIR INJECTE, TEMPS DE SEJOUR ET CONCENTRATION EN DCO) A PERMIS D'OPTIMISER LE RENDEMENT DE DEGRADATION D'UNE BOUE ACTIVEE ET A DONNE D'EXCELLENTS RESULTATS. LE RENDEMENT MAXIMAL OBTENU SUR LE COT EST SUPERIEUR A 80% ET LA CARACTERISATION DES EFFLUENTS LIQUIDE ET SOLIDE OBTENUS APRES TRAITEMENT PROUVE L'EFFICACITE DU PROCEDE. CONCERNANT LA DEGRADATION DE LA CELLULOSE, CE TRAVAIL A MONTRE SA VALIDITE EN TANT QUE COMPOSE MODELE REPRESENTATIF DE LA BOUE ACTIVEE. LES RESULTATS CONFIRMENT L'INTERET DE TRAVAILLER A LA TEMPERATURE OPTIMALE DE 330\C. DEUX SOUS-PRODUITS MAJORITAIRES ONT ETE IDENTIFIES A CETTE TEMPERATURE ET AVANT L'INJECTION D'OXYDANT : LES ACIDES 4-OXO PENTANOIQUE ET 3-OXO BUTANOIQUE. AU NIVEAU DU MECANISME, LES RADICAUX HO O PARTICIPENT A LA PHASE D'INITIATION DE LA DEGRADATION THERMIQUE DE LA CELLULOSE, ET DE SON OXYDATION HYDROTHERMALE. LE PEROXYDE D'HYDROGENE INTERVIENT DANS LA
Author: Natacha Ricq
Publisher:
ISBN:
Category :
Languages : fr
Pages : 258
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Book Description
LE PROCEDE D'OXYDATION HYDROTHERMALE (OHT) CONSISTE A MINERALISER LA MATIERE ORGANIQUE EN PRESENCE D'EAU ET D'UN OXYDANT, A HAUTE PRESSION ET HAUTE TEMPERATURE, ET IL A POUR PRINCIPAL AVANTAGE DE PRODUIRE DES EFFLUENTS GAZEUX PROPRES ET DES EFFLUENTS LIQUIDES BIODEGRADABLES. CETTE TECHNOLOGIE REPRESENTE UNE ALTERNATIVE INTERESSANTE A L'INCINERATION ET AU TRAITEMENT BIOLOGIQUE POUR DES DECHETS DILUES OU TOXIQUES, ET S'ADAPTE PARTICULIEREMENT AU TRAITEMENT DES BOUES DE STATIONS D'EPURATION URBAINES. CE TRAVAIL A DONC CONSISTE DANS UN PREMIER TEMPS A OPTIMISER LE RENDEMENT DE DEGRADATION SUR UNE BOUE SECONDAIRE BIOLOGIQUE. DANS UN DEUXIEME TEMPS, UNE ETUDE A ETE MENEE SUR LES SOUS-PRODUITS DE DEGRADATION ET SUR LE MECANISME REACTIONNEL A PARTIR D'UN COMPOSE MODELE : LA CELLULOSE. UN PLAN SIMPLEX A QUATRE PARAMETRES (TEMPERATURE, PRESSION D'AIR INJECTE, TEMPS DE SEJOUR ET CONCENTRATION EN DCO) A PERMIS D'OPTIMISER LE RENDEMENT DE DEGRADATION D'UNE BOUE ACTIVEE ET A DONNE D'EXCELLENTS RESULTATS. LE RENDEMENT MAXIMAL OBTENU SUR LE COT EST SUPERIEUR A 80% ET LA CARACTERISATION DES EFFLUENTS LIQUIDE ET SOLIDE OBTENUS APRES TRAITEMENT PROUVE L'EFFICACITE DU PROCEDE. CONCERNANT LA DEGRADATION DE LA CELLULOSE, CE TRAVAIL A MONTRE SA VALIDITE EN TANT QUE COMPOSE MODELE REPRESENTATIF DE LA BOUE ACTIVEE. LES RESULTATS CONFIRMENT L'INTERET DE TRAVAILLER A LA TEMPERATURE OPTIMALE DE 330\C. DEUX SOUS-PRODUITS MAJORITAIRES ONT ETE IDENTIFIES A CETTE TEMPERATURE ET AVANT L'INJECTION D'OXYDANT : LES ACIDES 4-OXO PENTANOIQUE ET 3-OXO BUTANOIQUE. AU NIVEAU DU MECANISME, LES RADICAUX HO O PARTICIPENT A LA PHASE D'INITIATION DE LA DEGRADATION THERMIQUE DE LA CELLULOSE, ET DE SON OXYDATION HYDROTHERMALE. LE PEROXYDE D'HYDROGENE INTERVIENT DANS LA
Author: María del Carmen Alonso San José
Publisher:
ISBN:
Category :
Languages : fr
Pages : 126
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Book Description
Author: Simon Parsons
Publisher: IWA Publishing
ISBN: 1843390175
Category : Science
Languages : en
Pages : 370
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Book Description
The suitability of Advanced Oxidation Processes (AOPs) for pollutant degradation was recognised in the early 1970s and much research and development work has been undertaken to commercialise some of these processes. AOPs have shown great potential in treating pollutants at both low and high concentrations and have found applications as diverse as ground water treatment, municipal wastewater sludge destruction and VOCs control. Advanced Oxidation Processes for Water and Wastewater Treatment is an overview of the advanced oxidation processes currently used or proposed for the remediation of water, wastewater, odours and sludge. The book contains two opening chapters which present introductions to advanced oxidation processes and a background to UV photolysis, seven chapters focusing on individual advanced oxidation processes and, finally, three chapters concentrating on selected applications of advanced oxidation processes. Advanced Oxidation Processes for Water and Wastewater Treatment will be invaluable to readers interested in water and wastewater treatment processes, including professionals and suppliers, as well as students and academics studying in this area. Dr Simon Parsons is a Senior Lecturer in Water Sciences at Cranfield University with ten years' experience of industrial and academic research and development.
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.
Author: Michael A. Borowitzka
Publisher: Springer
ISBN: 3319249452
Category : Science
Languages : en
Pages : 673
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Book Description
This book covers the state-of-the-art of microalgae physiology and biochemistry (and the several –omics). It serves as a key reference work for those working with microalgae, whether in the lab, the field, or for commercial applications. It is aimed at new entrants into the field (i.e. PhD students) as well as experienced practitioners. It has been over 40 years since the publication of a book on algal physiology. Apart from reviews and chapters no other comprehensive book on this topic has been published. Research on microalgae has expanded enormously since then, as has the commercial exploitation of microalgae. This volume thoroughly deals with the most critical physiological and biochemical processes governing algal growth and production.
Author: J. Mata-Alvarez
Publisher: IWA Publishing
ISBN: 1900222140
Category : Science
Languages : en
Pages : 292
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Book Description
Biomethanization of the Organic Fraction of Municipal Solid Wastes is a comprehensive introduction to both the fundamentals and the more practical aspects of the anaerobic digestion of organic solid wastes, particularly those derived from households, that is, the organic fraction of municipal solid wastes (OFMSW). It can be used as a textbook for specialized courses and also as a guide for practitioners. In the first part, the book covers the relevant aspects of anaerobic digestion (AD) of organic wastes. The fundamentals and kinetic aspects of AD are reviewed with particular emphasis on the aspects related to solid wastes. This introduction is necessary to have a comprehensive view of the AD process and to understand the practical principles as well as the origin of possible problems arising from the management of the process. Chapter 2 emphasizes the role of kinetics in designing the reactor, paying special attention to existing models, particularly the dynamic ones. Through this introduction, it is intended to facilitate the technology transfer from laboratory or pilot plant experiences to full-scale process, in order to implement improvements in current digesters. Laboratory methods are described for the analysis and optimization of reactor performance, such as methanogenic activity tests or experimental evaluation of the biodegradation kinetics of solid organic waste. The different reaction patterns applied to industrial reactors are outlined. Industrial reactors are classified in accordance with the system they use, pointing out advantages and limitations. Co-digestion, enabling the co-treatment of organic wastes of different origin in a more economically feasible way, is described in detail. Examples of co-digestion are given, with OFMSW as a base-substrate. Finally, full-scale co-digestion plants are discussed. Various types (mechanical, biological, physico-chemical) of pre-treatment to increase the biodegradability, and thus the yields of the process, are reviewed in detail. The use of the fermentation products of anaerobic digesters for biological nutrient removal processes in wastewater treatment plants is described. This constitutes an example of integrated waste management, a field in which both economic and technical advances can be achieved. Balances are given to justify the approach, and a full-scale case study is presented. The important topic of economics and the ecological advantages of the process are emphasized. The use of compost, the integration with composting technology, and advantages over other technologies are detailed in the framework of an environmental impact assessment of biowaste treatment. Finally, the anaerobic digestion of MSW in landfills is reviewed in detail, with emphasis on landfill process enhancement and strategies for its application.
Author: Dr. Arup Roy
Publisher: IWA Publishing
ISBN: 1780406878
Category : Science
Languages : en
Pages : 182
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Book Description
Nanotechnology in Industrial Wastewater Treatment is a state of the art reference book. The book is particularly useful for wastewater technology development laboratories and organizations. All professional and academic areas connected with environmental engineering, nanotechnology based wastewater treatment and related product design are incorporated and provide an essentialresource. The book describes the application and synthesis of Ca-based and magnetic nano-materials and their potential application for removal/treatment of heavy metals from wastewater. Nanotechnology in Industrial Wastewater Treatment discusses the rapid wastewater treatment methods using Ca-based nanomaterials and magnetic nanomaterials. This is an emerging area of new science and technology in wastewater treatment. The main audiences for the book are water industry professionals, research scholars and students in the area of Environmental Engineering and Nanotechnology. Authors: Dr. Arup Roy Department of Mining Engineering, Geo-Environmental Lab., Indian Institute of Technology, Kharagpur,India; and Professor Jayanta Bhattacharya, Department of Mining Engineering, Geo-Environmental Lab., Indian Institute of Technology, Kharagpur, India.
Author: France. Commissariat à l'énergie atomique (CEA)
Publisher: Le Moniteur Editions
ISBN:
Category : Science
Languages : en
Pages : 160
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Book Description
Author: Perrin Walker
Publisher: CRC Press
ISBN: 9781439822531
Category : Science
Languages : en
Pages : 1434
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Book Description
This publication presents cleaning and etching solutions, their applications, and results on inorganic materials. It is a comprehensive collection of etching and cleaning solutions in a single source. Chemical formulas are presented in one of three standard formats - general, electrolytic or ionized gas formats - to insure inclusion of all necessary operational data as shown in references that accompany each numbered formula. The book describes other applications of specific solutions, including their use on other metals or metallic compounds. Physical properties, association of natural and man-made minerals, and materials are shown in relationship to crystal structure, special processing techniques and solid state devices and assemblies fabricated. This publication also presents a number of organic materials which are widely used in handling and general processing...waxes, plastics, and lacquers for example. It is useful to individuals involved in study, development, and processing of metals and metallic compounds. It is invaluable for readers from the college level to industrial R & D and full-scale device fabrication, testing and sales. Scientific disciplines, work areas and individuals with great interest include: chemistry, physics, metallurgy, geology, solid state, ceramic and glass, research libraries, individuals dealing with chemical processing of inorganic materials, societies and schools.
Author: K. Byrappa
Publisher: William Andrew
ISBN: 1437778364
Category : Science
Languages : en
Pages : 796
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Book Description
Quartz, zeolites, gemstones, perovskite type oxides, ferrite, carbon allotropes, complex coordinated compounds and many more -- all products now being produced using hydrothermal technology. Handbook of Hydrothermal Technology brings together the latest techniques in this rapidly advancing field in one exceptionally useful, long-needed volume.The handbook provides a single source for understanding how aqueous solvents or mineralizers work under temperature and pressure to dissolve and recrystallize normally insoluble materials, and decompose or recycle any waste material. The result, as the authors show in the book, is technologically the most efficient method in crystal growth, materials processing, and waste treatment. The book gives scientists and technologists an overview of the entire subject including: À Evolution of the technology from geology to widespread industrial use. À Descriptions of equipment used in the process and how it works.À Problems involved with the growth of crystals, processing of technological materials, environmental and safety issues.À Analysis of the direction of today's technology. In addition, readers get a close look at the hydrothermal synthesis of zeolites, fluorides, sulfides, tungstates, and molybdates, as well as native elements and simple oxides. Delving into the commercial production of various types, the authors clarify the effects of temperature, pressure, solvents, and various other chemical components on the hydrothermal processes. - Gives an overview of the evolution of Hydrothermal Technology from geology to widespread industrial use - Describes the equipment used in the process and how it works - Discusses problems involved with the growth of crystals, processing of technological materials, and environmental and safety issues
