Автор: Rosa M. Laursen Название: Malachite Green: Properties and Uses ISBN: 1536178004 ISBN-13(EAN): 9781536178005 Издательство: Nova Science Рейтинг: Цена: 89750.00 T Наличие на складе: Невозможна поставка. Описание: Malachite green is a green, crystalline, water soluble, triphenyl methylene chloride salt with several sources, including the dye industry, textile industry, medical fields and aquatic life. Its leuco form is electrically neutral and undergoes photoionization that yields the cationic form of malachite green. This reaction provides desirable features that can be used to control the molecular properties via electrostatic interaction/repulsion. The usage of malachite green was banned worldwide by the Food and Drug Administration in 2002, however it is still used in some places due to its low cost and the lack of suitable alternatives. As such, the removal of malachite green by using Kocuria marina DAGII cells in a fixed-bed column is discussed. In recent years, the use of microbial biomass for the decolorization and degradation of textile industry wastewater has become a promising alternative due to its eco-friendliness and low cost, where selected bacteria, algae, yeast and fungi are used to replace existing treatment processes.
Автор: Calvin Roberson Название: Cellulose Acetate: Properties, Uses and Preparation ISBN: 1536147044 ISBN-13(EAN): 9781536147049 Издательство: Nova Science Рейтинг: Цена: 215410.00 T Наличие на складе: Невозможна поставка. Описание: Cellulose Acetate: Properties, Uses and Preparation presents data on thermodynamic characteristics (heat capacity, enthalpy, entropy, and Gibbs function) from 4 to 580 K cellulose acetates and cellulose nitrates, as well as the major plasticizers for these polymers, the temperatures of their relaxation and phase transitions, the effect of plasticizers on these characteristics of cellulose acetate and cellulose nitrate and the solubility of plasticizers in polymers. Cellulose diacetate has been used in the design of sorption matrices for the fluorescent analysis of polyaromatic and heterocyclic compounds. Thus, the physicochemical properties of cellulose diacetate solutions in a binary acetone-water solvent were analyzed along with the morphological, surface-energy, physicochemical and physicomechanical characteristics of film matrices in comparison with fiber ones. Additionally, the authors examine how the growth of CO2 emissions efforts led to the necessity for green material solutions that fit into a sustainable development policy and low environmental impact. The major barriers to produce cellulose-based products from agricultural residues are the heterogeneity of the raw material, the experimental conditions reproducibility, the heterogeneous phase of the synthesis reaction, the difficulty of purification, the effluent disposal, and the control of the product quality. In the closing study, the authors provide a comprehensive review of electrospun nanofibres from different types of polymers with synthesized montmorillonite clays. Loading activated natural bentonite clay into any type of polymer can improve the adsorption property of electrospun nanofibres, but the bentonite clay must be well dispersed, suspended and loaded to achieve any benefit. This study may pave the way for further use of electrospun nanofibres loaded with clay in a wide variety of environmental and medical applications.
Автор: Oleksandr Tkach, Paula Vilarinho Название: Strontium Titanate: Synthesis, Properties and Uses ISBN: 1536154377 ISBN-13(EAN): 9781536154375 Издательство: Nova Science Рейтинг: Цена: 215410.00 T Наличие на складе: Невозможна поставка. Описание: Strontium titanate (STO) is a classical high-permittivity perovskite material known since the 1940s. Although incipient ferroelectric behaviour of SrTiO3 was thoroughly studied during several decades, many new physical phenomena in STO and its solid solutions have been predicted theoretically and observed experimentally in past few years. The obtained results were successfully applied for the development of modern electronic devices on the basis of macroscopic and nanostructured samples. Besides the incipient ferroelectricity, properties of STO include a structural phase transition, semiconductivity, superconductivity, and thermoelectricity, among others. This book provides the latest information on the developments of field preparation, characterization, and application of STO and the materials based on it, with perspectives on future research. It collects the contributions of several established researchers from around the world on the fundamental mechanisms, processing, and possible uses for STO-based materials in the form of single crystals, thin films, and ceramics. This book covers a broad range of topics related to STO and materials based on it, including an overview of lattice dynamics and magnetic resonance characterization, Sr/Ti ratio, and stress induced modification of the properties, modelling, and simulation of improper ferroelectricity and multiferroic phases, dielectric responses and thermoelectric performance for tunable devices, and energy harvesting applications, respectively.
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