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Packed towers --- Colonnes à garnissage --- Columns, Packed --- Towers, Packed --- Chemical engineering --- Diffusion --- Equipment and supplies --- Packed towers. --- Colonnes à garnissage.
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The rising trend towards the operation of packed towers in separation processes was initiated after the energy crisis in the seventies. This book is the first of its kind which treats all the important theoretical and practical aspects for the calculation, design and operation of these packed towers.The main applications of packed towers are in the separation of gas-liquid or vapour-liquid systems. This book considers all features of packed towers for industrial separation plants that can be used in process and environmental technology. It includes a comprehensive treatment of packed-bed technology and the advantages of packed towers, such as the application of improved methods for energy saving purposes, environmental protection measures and the revamping of existing plants, are clearly outlined.The methods presented are based on sound physical and mathematical modelling, the validity of which have been confirmed by numerous experimental investigations performed in laboratories and pilot plants and then scaled up to meet practical, industrial requirements.
Packed towers --- Colonnes à garnissage --- Packed towers. --- Colonnes à garnissage --- Separation (Technology) --- Colonnes à garnissage. --- Séparation (technologie) --- Colonnes à garnissage. --- Séparation (technologie)
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Extraction (Chemistry) --- Chemistry, Technical --- Diffusion --- Packed towers --- Separation (Technology) --- Solution (Chemistry)
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Extraction (Chemistry) --- Chemistry, Technical --- Diffusion --- Packed towers --- Separation (Technology) --- Solution (Chemistry)
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"Intensification of Sorption Processes: Active and Passive Mechanisms introduces a number of selected, advanced topics in sorption processes/process intensification, covering both theoretical and applicable aspects. The first part of the book is devoted to the study of sorption processes based on active mechanisms, including ultrasonic, microwave, high-gravity, electrical and magnetic fields, while the second part covers passive mechanisms like nanostructures and nanofluids, membrane, supercritical fluids and sorption processes based on geometry design and equipment structure. The focus of the book is on key aspects of novel process intensification technologies (processes and equipment), i.e., absorption and adsorption, working principles, and design and applications."--
Absorption. --- Adsorption. --- Separation (Technology) --- Surface chemistry --- Sorption --- Chemistry, Physical and theoretical --- Packed towers
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Micro-extraction techniques in sample preparation are gaining interest among analytical chemists as they comply with green analytical chemistry demands and ensure environmental protection and public safety. Savings in cost and time are considered as valuable benefits by using novel micro-extraction approaches in sample handling. Selectivity, sensitivity and lower detection limits are also included among the performance characteristics required to meet the legislation criteria. The target of this special issue is to present the state of art in microextraction sample preparation techniques. Modern, simple and efficient methods for preconcentration and separation are described for different analytes isolated from various matrices.
Extraction (Chemistry) --- Chemistry, Technical --- Diffusion --- Packed towers --- Separation (Technology) --- Solution (Chemistry)
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Bioanalysis of endogenous substances, metabolites, and contaminants poisons is important in analyses of biological functions, metabolomics, forensic toxicology, patient diagnosis and biomonitoring of human exposure to hazardous chemicals. In these analyses, methods of sample preparation are essential for the isolation and concentration of target analytes from complex biological matrices. These processes, however, are time-consuming, labor-intensive and error-prone, and markedly influence the reliability and accuracy of determining target analytes. Thus, efficient sample preparation techniques and their integration with analytical methods have become significant. Solid-phase microextraction (SPME) is a simple and convenient sample preparation technique that has enabled automation, miniaturization, high-throughput performance, and online coupling with analytical instruments. Moreover, SPME has reduced analysis times, as well as solvent and disposal costs. This book consists of 14 original, peer-reviewed papers for the Special Issue in the MDPI journal Molecules. The topics covered include headspace fiber SPME (HS-SPME) gas chromatography-mass spectrometry (GC-MS), HS-in-needle microextraction GC-MS, thin film SPME liquid chromatography-tandem mass spectrometry (LC-MS/MS), magnetic solid phase extraction LC-MS/MS, in-tube SPME LC-MS/MS and in-tube SPME LC-UV. Samples analyzed include plant-derived volatile organic compounds; body odor; metabolites in urine, plasma and saliva sample; and biomarkers of tobacco smoke exposure in hair and environmental estrogens.
Extraction (Chemistry) --- Chemistry, Technical --- Diffusion --- Packed towers --- Separation (Technology) --- Solution (Chemistry)
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Diffusion. --- Gases --- Liquids --- Physics --- Separation (Technology) --- Solution (Chemistry) --- Solutions, Solid --- Matter --- Packed towers --- Semiconductor doping --- Diffusion --- Properties
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The relatively new technique of solid phase microextraction (SPME) is an important tool to prepare samples both in the lab and on-site. SPME is a ""green"" technology because it eliminates organic solvents from analytical laboratory and can be used in environmental, food and fragrance, and forensic and drug analysis. This handbook offers a thorough background of the theory and practical implementation of SPME. SPME protocols are presented outlining each stage of the method and providing useful tips and potential pitfalls. In addition, devices and fiber coatings, automated SPME systems, SPME
Extraction (Chemistry) --- Chemistry, Analytic --- Technique. --- Analysis, Chemical --- Analytic chemistry --- Chemical analysis --- Chemistry --- Chemistry, Technical --- Diffusion --- Packed towers --- Separation (Technology) --- Solution (Chemistry)
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