für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray In this book Sweetening of natural gas is discussed with the help of literature survey and calculations. Different processes, commonly used in industries are compared. Different methods for calculation water contents in Natural Gas are also given in this book. A brief method for designing absorber with stage to stage calculation is also given. Optimization for sweetening process is discussed in detail. Process designers and Chemical engineers will find this book a valuable guide to gas sweetening, both in terms of its application to efficient and cost effective operations. It will prove particularly useful to readers who want a `quick reference` guide to natural gas sweetening operations and procedures as well as those readers who wish to increase their knowledge of best practices. ····· 1036121530
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Emulsion polymerization below critical micellar concentration is a hidden and visionary area of polymer science and chemical engineering. An analysis is done between styrene and vinyl acetate. Various variables like initiator concentration , surfactant concentration and agitator speeds are investigated. A deep understanding of emulsion polymerization and polymer science will mesmerize the readers interested in details. ····· 1036121039
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The potential use of raw and activated phillipsite as well as calcium chloride salt for separating the ethanol water azeotropic mixture in the adsorptive distillation process was assessed in this book 4A molecular sieves was taken as a reference adsorbent to which the water adsorption on selected materials was compared. The breakthrough curves of water sorption on these adsorbents showed that the treatment of phillipsite with 1M calcium chloride (1M-phillipsite) produced the best separation of the ethanol water azeotropic mixture, where the breakthrough time is about 55 mins which is almost similar to the molecular sieves (57 mins). ····· 1036120745
····· lezzter Preis 68.00€ ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Environmental Chemistry and Toxicology is an emergent course in Ethiopia. It has great role in mitigating solution for different environmental stresses. All human activities irrespective of the scope and severeness have an impact in soil, air, water and life of the receiving bodies. Thus, the main focus of this book is to study the fate of chemical pollutants in the environment. This book comprises five chapters such as, Introduction to Environmental Chemistry, Aquatic Chemistry and Water pollution, Atmospheric Chemistry and Air pollution, Soil Chemistry and Pollution and Environmental Toxicity and Toxicology. The overall goal of this book is to gain an understanding of the fundamental chemical processes that are central to a range of important Environmental problems and to utilize this knowledge in making critical evaluations of these problems. ····· 1036120446
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Coagulation flocculation is well established waste water treatment process since many decades. In this present study, experimental investigations using jar tests were validated with response surface methodology (RSM) and Artificial Neural Network (ANN). RSM was applied to optimize the effects of processing parameters on the yield of BOD and COD removal and a computer-stimulated artificial neural network (ANN) model was developed to get a good correlation between the input variables and the output parameter. This book, therefore, provides a novel approach for optimizing the process parameters during coagulation-flocculation process using the statistical tools where dairy whey treatment has been achieved in a user friendly way. Moreover this particular approach can be implemented across the globe for all dairy industries (irrespective of their sizes) as that will definitely help the engineers/users in the dairy waste water treatment by optimizing the process variables of the experimental conditions while minimizing the number of required experiments. ····· 1036119953
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This book has four chapters which includes the fundamental concept of nanotechnology and its role in biological sciences as termed as bionanotechnology. This book also includes the environmental implications of nanotechnology as its green & eco-friendly aspect and its applications in daily uses. Thus, this is excellent combo of introduction and application of nanotechnology in biological sciences. Nanotechnology, itself is a new advance chemical technology according to the present scenario which has couple of applications in all fields of sciences including biotechnology as well. It has also role in clinical sciences in which this technology is very popular in diagnosis of various diseases, immune and drug therapy. This book is dedicated to All mighty and my parents, ` Father, late Mr.Ram Kumar Sharma & Mother, Mrs. Sushila Sharma. ····· 1036119874
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Recycling of waste PE plastic converts them from one form to other which remains in environment and creates the environmental pollution . Major attention of this work is given for the conversion of waste PE plastic to other products, which will not create pollution in the environment. The conversion is done with eco-friendly method. Pyrolysis (thermal cracking) of plastic waste is possible to obtain a mixture of hydrocarbons, working at atmospheric pressure and moderate temperatures.Pyrolysis by Chemical Vapour Deposition (CVD) yields relatively narrow molecular weight distribution of hydrocarbons and can improve the selectivity in products obtained. Thus, the CVD pyrolysis is an environmentally friendly process, which is economically viable too. ····· 1036119306
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Hydrodynamic parameters have an important role in the flotation process. In this research, the effect of hydrodynamic parameters in the coarse particles flotation is investigated according to items below: (1) The effect of operational flotation parameters in the bubble size and rise velocity (2) The effect of dimensionless hydrodynamic parameters in the coarse particles flotation (Reynolds, Froude and Weber numbers) (3) The effect of air flow rate in the coarse particles flotation (4) The effect of bubble-particle interactions in the coarse particles flotation (bubble-particle collision and attachment probabilities) (5) The effect of type and dosage of frothers in the coarse particles flotation (6) The effect of cell geometry in the coarse particles flotation ····· 1036119142
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Due to global environmental concerns and energy insecurity, there is emergent interest to find out sustainable and clean energy source with minimal or zero use of hydrocarbons.Electricity can be produced in different types of power plant systems, batteries or fuel cells.Bacteria can be used to catalyze the conversion of organic matter into electricity. There are multiple physical, chemical and biological factors that interact and play a role in determining microbial fuel cell performance. Modeling of a microbial fuel cell system is a valuable tool for investigating system parameters with reduced time and money, as models can be easily modified to simulate various configurations and operating conditions.In this study, the model formulation is simplified with lump parameters of the fuel oxidation. The anodic chamber of a microbial fuel cell operates at anaerobic conditions. Model calculations evaluate the effect of different substrate utilization yields, standard potential of the redox mediator, ratio of suspended to biofilm cells, initial substrate and mediator concentrations, mediator diffusivity, mass transfer boundary layer, external load resistance etc. ····· 1036119024
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Neural networks and fuzzy logic have some common features such as distributed representation of knowledge, ability to handle data with uncertainty and imprecision etc. Fuzzy logic has tolerance for imprecision of data, while neural networks have tolerance for noisy data. A neural network s learning capability provides a good way to adjust expert s knowledge and it automatically generates additional fuzzy rules and membership functions to meet certain specifications. This reduces the design time and cost. On the other hand, the fuzzy logic approach enhances the generalization capability of a neural network by providing more reliable output when extrapolation is needed beyond the limits of the training data. To simplify the design and optimization of fuzzy models, process learning techniques derived from neural networks (so called neuro-fuzzy approaches) can be used.Different architectures of neuro-fuzzy systems have been discussed by a number of researchers. In this research, neuro-fuzzy system networks are deployed and used for the dynamic modeling of a nonlinear MIMO system (heat recovery steam generator (HRSG)) and a permeability prediction process. ····· 1036118802
für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Pervaporation is a membrane process with proven potential in separation of volatile and organic mixtures. Among various polymers and solvent pervaporation cases, two polymers and their blends with another hydrophile polymer were studied for two pervaporation separations. Poly(lactic acid) (PLA) and cardo poly(ether ether ketone) (PEEKWC), two polymers with no pervaporation study history, were used to prepare dry-cast dense membranes using chloroform as the solvent. Pervaporation separation of methanol/MTBE, ethanol/ETBE, and ethanol/cyclohexane was investigated using prepared membranes. The effect of several operating conditions, namely concentration, temperature and flow rate on the pervaporation performance was studied. The mechanical properties and swelling behavior of the membranes were investigated in different feed concentrations. The obtained results could be interesting to the researchers in pervaporation field. ····· 1036118508
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Reactive dyes containing diazo bonds are more resistant to anaerobic reduction in comparison to monoazo dyes. Reactive Yellow-145 (RY-145) which is used as a model dye is a diazo dye having -SO3H group in its structure. A novel bacterial consortium was isolated from the soil samples of a local dye manufacturing unit at Ahmedabad, Gujarat, India. This culture was used for decolorization parametric study of RY-145 under various operating conditions. The consortium was successfully able to decolorize, 300 mg l-1 of selected dye up to 97% within 11 h under static facultative conditions at pH 7.0 and 37°C temperature. The UV - Visible Spectroscopic analysis results indicate the decolorization of dye. The HPLC and FTIR results confirm degradation of RY-145 into smaller compounds. For the commercial viability, combination of specially prepared synthetic medium and extract of agriculture waste is used as a growth medium for consortium in place of nutrient broth. COD reduction of nearly 70% is achieved for 20 times diluted industrial wastewater. Specially designed continuous column reactor (PMSCCR) has also been used for batch and continuous study of decolorization of RY-145. ····· 1036118293
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Over the last few years, biomedical engineering had a rapid progress on fabricating more precise and accurate biosensors, joining these results with a decrease in analysis costs. Electrochemiluminescence is a reliable and low-cost technique for the sensing of biomolecules, such as DNA and proteins. The scope of this book is to engineer this powerful method in order to design more sensitive biosensors. After an overview about the most common electrochemical techniques, the author presents a novel approach that involves carbon nanotubes to increase the sensitivity. This approach leads to a future miniaturization in order to build an integrated biosensor. This book could be useful to analyze thoroughly electrochemiluminescence aspects and to get new ideas for developing next generation biosensors. ····· 1036118218
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Rassmotreny metody ochistki i vodopodgotovki pit`evoy vody. Proveden sravnitel`nyy analiz metodov okislenie primesey vody ozonom, khlorom i dioksidom khlora i pokazano, chto naibolee effektiven i bezopasen v primenenie yavlyaetsya ozon. Na osnovanii provedennogo issledovaniya kachestva vody s pomoshch`yu metodov mass-spektrometrii i zhidkostnoy khromatografii sdelan vyvod o tom, chto voda pit`evaya, postupayushchaya v nashi kvartiry trebuet dopolnitel`noy ochistki. Ustanovleno, chto naibolee effektivnaya ochistka dostigaetsya metodami obrabotkoy ozonom s absorbtsiey na ugol`nykh fil`trakh i posleduyushchim zamorazhivaniem vody i ottaivaniem ee. Predlozheny naibolee effektivnye usloviya zamorazhivaniya vody. Kachestvo poluchaemoy vody sootvetstvuet mirovym standartam dlya pit`evoy vody: ona ne soderzhit khlororganicheskie veshchestva i opasnye mikroelementy: As, Cd, Ni, Cr, Pb, Se, V, Tl, U, Th, a takzhe Fe, Al. Kniga prednaznachena dlya nauchnykh i inzhenerno-tekhnicheskikh rabotnikov, studentov i aspirantov, zanimayushchikhsya voprosami ekologii i vodopodgotovki. Krome togo, budet polezna vsem, kto zhelaet pit` chistuyu pit`evuyu vodu. ····· 103614916
für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Carotenoid formulation is of great interest for the pharmaceutical and food industry. A proper formulation and particle size is essential to obtain high colorant activity. Thus, a suitable technology to produce particles from these natural substances must be used to avoid the degradation and loss of commercial value of the colorants. Supercritical fluid precipitation processes are an excellent alternative to formulate carotenoids, especially supercritical antisolvent processes, which are the main topic of this thesis. Also, a novel method, the Supercritical Fluid Extraction of Emulsions (SFEE) is presented and the fundamentals of this process are evaluated with the aid of a mathematical model. ····· 103613769
für 35.91€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The increasing concerns about climate change and global warming has increase the interest in reducing the emissions of greenhouse gases. Thus, the chemical absorption of carbon dioxide by aqueous amine solutions has been investigated over the last decades. In the carbon dioxide absorption tests performed in a pilot unit, the following aqueous amine solutions with a concentration of 10 % by weight were tested: diethylamine, monoethanolamine, piperazine and ethanolamine. The tests were performed with an absorption time of 240 minutes. The obtained results for the tested aqueous amine solutions were: 0.492 mol CO2/mol amine for the diethylamine aqueous solution, 0.409 mol CO2/mol amine for the MEA aqueous solution, 0.395 mol CO2/mol amine for the PZ aqueous solution and 0.321 mol CO2/mol amine for the EDA aqueous solution. A cost analysis was performed in other to see which one of the amines was the most economical solvent. After analyzing the carbon dioxide loading capacity and the price per liter for each one of the amine, it was concluded that DEA was the most economical solvent, with a loading capacity of 0.982 mol CO2/mol amine and a cost of 25.70 EUR/L. ····· 103613179
für 88.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray El impacto medioambiental de los productos de la combustión de motores diesel puede minimizarse evaluando la influencia que en el proceso de formación del material particulado (MPD) tienen las condiciones de operación del motor y la formulación del combustible. Este material está constituido por una fracción soluble (SOF) formada por hidrocarburos resultantes de la combustión incompleta del combustible o procedentes del aceite lubricante y otra insoluble (ISF) formada por una fracción orgánica (hollín) y otra inorgánica compuesta mayoritariamente por sulfatos, nitratos y agua. Los resultados corroboran el efecto negativo de los hidrocarburos aromáticos del combustible sobre la formación del ISF y la gran contribución del aceite lubricante a la SOF. Los estudios de adsorción realizados con el ISF obtenido en los modos de operación de bajo y alto grado de carga, muestran que este material adsorbe más SOF en condiciones urbanas por su mayor área superficial y menor tamaño. El modelo cinético permitió deducir que el C2H2 es la especie pirolítica más importante y la responsable del MPD formado y que los compuestos poliaromáticos favorecen su formación a altas concentraciones de C2H2. ····· 103613058
für 35.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray El manejo de la energía siempre ha sido determinante en el desarrollo tecnológico y científico de las culturas sin embargo, el uso desmesurado de los recursos fósiles y minerales ha generado un desequilibrio natural que conduce a una escasez definitiva de energía. Este libro presenta al biodiesel obtenido de aceite de ricino como una alternativa energética sustentable. El proceso de producción obtenido a 26°C implica un alto ahorro energético-económico por no requerir un sistema de intercambio de calor en el reactor. Resonancia magnética nuclear de protón (RMN-1H) es utilizada para determinar la cinética de la reacción. Finalmente, la incorporación de una nueva metodología de refinación de glicerina que satisface los estándares USP, sustituyendo la destilación fraccionada utilizada en los actuales procesos industriales por un solo lavado con acetona, incrementa sustancialmente la rentabilidad y calidad del proceso. Científicos, pequeños, medianos y grandes productores de biodiesel pueden beneficiarse con el escalamiento de los resultados aquí publicados 164 kg/día de biodiesel y 16kg/día de glicerol pueden producirse mediante dos lotes/día en un reactor intermitente de 122.26 L ····· 103612967
für 50.31€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Durante una revisión de este texto un maestro sobre el tema señaló que el libro era un `peligro` para los estudiantes puesto que su principal defecto era que es `demasiado ordenado`. Tomando en consideración que el orden no es un defecto presento al amable lector este documento y espero llegue a considerar que las ideas en él están efectivamente ordenadas. No obstante, debo hacer una advertencia al estudiante: este texto debe verse como una guía y motivación. Dado que los problemas en este texto se resuelven paso por paso no piense que con solo verlos ya aprendió. El aprendizaje significativo se presenta cuando el alumno busca, lee, comprende, practica y aplica los conocimientos en la solución de problemas en la vida real. ····· 103612878
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray La contaminación atmosférica supone importantes riesgos para la salud humana y el medio ambiente. Entre los contaminantes regulados en inmisión en Europa se encuentra el benceno, cuyas medidas resultan de gran importancia por ser un carcinógeno humano. Para la adecuada gestión de la calidad del aire es indispensable el correcto funcionamiento de los equipos de medida de benceno en aire. En este sentido, la Directiva 2008/50/CE establece como método de referencia la Norma EN 14662, que evalúa una serie de características de funcionamiento de los equipos, asegurando así la calidad de los datos. Al conjunto de todas las pruebas que la norma expone (Ensayos de Laboratorio, de Campo y Cálculo de la Incertidumbre expandida) se le denomina Ensayo de Aprobación de Tipo. Los analizadores empleados en la UE a partir del 11/06/2013 deben ser de Tipo Aprobado. En este libro se somete un analizador de medida de benceno por cromatografía de gases, comúnmente utilizado en las estaciones de vigilancia ambiental, a las pruebas de laboratorio. Además, se discute y se proponen posibles modificaciones a los ensayos descritos con el fin de complementar el estudio de la idoneidad del analizador. ····· 103612528
für 35.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray La presente investigación genera un nuevo conocimiento en la medición de un pH, con una técnica novedosa a través de un sistema optoelectrónico que se aplica particularmente a sensores de película delgada, obtenidos por Sol-Gel. Estos sensores de matriz cristalina de SiO están dopados con indicadores orgánicos de acides. El sistema optoelectrónico de medida de pH entrega un dato numérico exacto del nivel de acidez del ambiente al cual el sensor esta sometido, estimando el cambio del color de la pelicula delgada. Se entrega a consideración de la comunidad científica un sistema de medida de pH en películas delgadas basado en métodos optoelectrónicos, instrumento innovador que es una alternativa al conocido método de medición con papel indicador, que permitirá monitorear con rapidez el nivel de pH en aplicaciones ambientales, cuidado de piezas de museos o archivos históricos y control de ambientes gaseoses húmedos entre otros. ····· 103611756
für 26.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray La operación unitaria de la evaporación es muy empleada en los procesos que se llevan a cabo en la industria química. En este libro se presentan los conceptos principales. El libro presenta además una serie de problemas de aplicación que se resuelven paso a paso. El sistema empleado para los cálculos es el MKS de ingeniería. El libro puede ser utilizado tanto por los estudiantes de las carreras relacionadas con la tecnología química, como por los profesionistas que deseen recordar los conocimientos básicos sobre la evaporación. ····· 103611436· 1 · ::::: · 6 ·· 7 ·· 8 ·· 9 ·· 10 ·· 11 ·· 12 · ::::: · 13 ·
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