Adsorption, Aggregation and Structure Formation in Systems of Charged Particles
Adsorption, Aggregation and Structure Formation in Systems of Charged Particles

Author: Bhuvnesh Bharti

Publisher: Springer

Published: 2014-06-17

Total Pages: 155

ISBN-13: 3319077376

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This thesis presents studies on the interaction of soft materials like surfactants and proteins with hard silica nanomaterials. Due to its interdisciplinary nature it combines concepts from the fields of physical chemistry, nanoscience and materials science, yielding to fundamental insights into the structure-directing forces operating at the nano-scale. It is shown that the morphology of surfactant micellar aggregates adsorbed at the surface of nanoparticles and inside tubular nanopores can be tuned on demand by the co-adsorption of a surface modifier. The interaction of globular proteins with silica nanoparticles is dominated by electrostatic interactions and can be controlled by pH and ionic strength, while the bridging of nanoparticles by adsorbed protein molecules leads to large-scale hybrid aggregates of protein with the nanoparticles. Concepts emerging from the role of electrostatic interactions in the hetero-aggregation of nanoparticles with protein molecules are used for the co-assembly of charged microbeads into linear clusters and chains of controllable length.

Biophysical Chemistry of Fractal Structures and Processes in Environmental Systems
Biophysical Chemistry of Fractal Structures and Processes in Environmental Systems

Author: Nicola Senesi

Publisher: John Wiley & Sons

Published: 2008-09-15

Total Pages: 340

ISBN-13: 0470511192

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This book aims to provide the scientific community with a novel and valuable approach based on fractal geometry concepts on the important properties and processes of diverse environmental systems. The interpretation of complex environmental systems using modern fractal approaches is compared and contrasted with the more classical approaches. The book will provide the fundamental knowledge necessary for solving practical environmental problems. Furthermore, it examinea how the fractal approach has been applied in order to understand the structure and reactivity of natural, environmental systems including flocs, sediments, soils, microorganisms and humic substances.

Dyes and Photoactive Molecules in Microporous Systems
Dyes and Photoactive Molecules in Microporous Systems

Author: Virginia Martínez-Martínez

Publisher: Springer Nature

Published: 2020-12-15

Total Pages: 411

ISBN-13: 303056634X

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This book provides an overview of the design, synthesis, and characterization of different photoactive hybrid organic-inorganic materials, based on the combination of mainly organic molecules and inorganic nanostructures, tackling their uses in different scientific fields from photonics to biomedicine. There are many examples extensively describing how the confinement of organic compounds (i.e. chromophores, photochromic molecules or photoreactants), or other photoactive compounds (i.e.metal clusters) into several microporous systems can modulate the photophysical properties and photochemical reactions leading to interesting applications. Among (ordered)-hosts, different systems of diverse nature are widely used, such as the, the 1D- or 3D- channels of zeolitic frameworks, interlayer space of 2D-clays, the organic nanospace of curcubituril and cyclodextrins or the organo-inorganic porous crystalline MOFs systems. This volume highlights the advances of these photoactive materials and aims to be an inspiration for researchers working in materials science and photochemistry, including chemists, material engineers, physicists, biologists, and medical researchers.

Optimization of Micro Processes in Fine Particle Agglomeration by Pelleting Flocculation
Optimization of Micro Processes in Fine Particle Agglomeration by Pelleting Flocculation

Author: Benjamin Oyegbile

Publisher: CRC Press

Published: 2016-06-22

Total Pages: 130

ISBN-13: 1317371461

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Efficient particle separation in order to meet stringent regulatory standards represent one of the biggest challenges facing the process industry operators today. Emerging environmental problems such as climate change, population growth and natural resource depletion make it more compelling to undertake research into alternative phase separation techniques and optimization of existing ones. Meeting this challenge requires innovative, revolutionary and integrated approach in the design and optimization of various unit processes in fine particle separation. Flocculation is widely used as an effective phase separation technique across many process industries such as water and wastewater treatment and in minerals processing. In this work, a new pre-treatment technique was developed using a patented bench scale reactor unit as a technical proof of concept. Furthermore, the book provides a valuable insight into the hydrodynamics and fluid-particle interactions within the agglomeration units. The relatively high solids content of the stable pellets (approximately 30 %) and very low residual turbidity of the post-sedimentation supernatant (7 NTU) clearly demonstrate the potential of this technique. In addition to significantly improving the subsequent solid-liquid separation efficiency, this study also showed that the effluent can be recycled back into the sewer network or utilized for non-portable reuse. The findings obtained from this research will be extremely useful in the scaling up and optimization of the reactor system.

The Surface Chemistry of Natural Particles
The Surface Chemistry of Natural Particles

Author: Garrison Sposito

Publisher: Oxford University Press

Published: 2004-03-25

Total Pages: 256

ISBN-13: 0190283602

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This book covers the development of both experiment and theory in natural surface particle chemistry. It emphasizes insights gained over the past few years, and concentrates on molecular spectroscopy, kinetics, and equilibrium as they apply to natural particle surface reactions in aqueous media. The discussion, divided among five chapters, is complemented by lengthy annotations, reading suggestions, and end-of-chapter problem sets that require a critical reading of important technical journal articles.

Nanomaterials and Nanocomposites, Nanostructure Surfaces, and Their Applications
Nanomaterials and Nanocomposites, Nanostructure Surfaces, and Their Applications

Author: Olena Fesenko

Publisher: Springer Nature

Published: 2020-11-25

Total Pages: 763

ISBN-13: 3030519058

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This book highlights some of the latest advances in nanotechnology and nanomaterials from leading researchers in Ukraine, Europe and beyond. It features contributions presented at the 7th International Science and Practice Conference Nanotechnology and Nanomaterials (NANO2019), which was held on August 27–30, 2019 at Lviv Polytechnic National University, and was jointly organized by the Institute of Physics of the National Academy of Sciences of Ukraine, University of Tartu (Estonia), University of Turin (Italy), and Pierre and Marie Curie University (France). Internationally recognized experts from a wide range of universities and research institutions share their knowledge and key findings on material properties, behavior, and synthesis. This book’s companion volume also addresses topics such as nano-optics, energy storage, and biomedical applications.

Metal Oxide Nanoparticles
Metal Oxide Nanoparticles

Author: Oliver Diwald

Publisher: John Wiley & Sons

Published: 2021-09-10

Total Pages: 903

ISBN-13: 1119436761

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Ein umfassendes Referenzwerk für Chemiker und Industriefachleute zum Thema Nanopartikel Nanopartikel aus Metalloxid sind ein wesentlicher Bestandteil zahlreicher natürlicher und technologischer Prozesse ? von der Mineralumwandlung bis zur Elektronik. Darüber hinaus kommen Metalloxid-Nanopartikel in Pulverform im Maschinenbau, in der Elektronik und der Energietechnik zum Einsatz. Das Werk Metal Oxide Nanoparticles: Formation, Functional Properties and Interfaces stellt die wichtigsten Synthese- und Formulierungsansätze bei der Nutzung von Metalloxid-Nanopartikeln als Funktionsmaterialien vor. Es werden die üblichen Verarbeitungswege erklärt und die physikalischen und chemischen Eigenschaften der Partikel mithilfe von umfassenden und ergänzenden Charakterisierungsmethoden bewertet. Dieses Werk kann als Einführung in die Formulierung von Nanopartikeln, ihre Grenzflächenchemie und ihre funktionellen Eigenschaften im Nanobereich genutzt werden. Darüber hinaus dient es zum vertiefenden Verständnis, denn das Buch enthält detaillierte Angaben zu fortschrittlichen Methoden bei der physikalischen, chemischen, Oberflächen- und Grenzflächencharakterisierung von Metalloxid-Nanopartikeln in Pulvern und Dispersionen. *Erläuterung der Anwendung von Metalloxid-Nanopartikeln und der wirtschaftlichen Auswirkungen *Betrachtung der Partikelsynthese, einschließlich der Grundsätze ausgewählter Bottom-up-Strategien *Untersuchung der Formulierung von Nanopartikeln mit einer Auswahl von Verarbeitungs- und Anwendungswegen *Diskussion der Bedeutung von Partikeloberflächen und -grenzflächen für Strukturbildung, Stabilität und funktionelle Materialeigenschaften *Betrachtung der Charakterisierung von Metalloxid-Nanopartikeln auf verschiedenen Längenskalen In diesem Buch finden Forscher im akademischen Bereich, Chemiker in der Industrie und Doktoranden wichtige Erkenntnisse über die Synthese, Eigenschaften und Anwendungen von Metalloxid-Nanopartikeln.

Multi-Scale Biogeochemical Processes in Soil Ecosystems
Multi-Scale Biogeochemical Processes in Soil Ecosystems

Author: Yu Yang

Publisher: John Wiley & Sons

Published: 2022-03-23

Total Pages: 353

ISBN-13: 1119480477

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MULTI-SCALE BIOGEOCHEMICAL PROCESSES IN SOIL ECOSYSTEMS Provides a state-of-the-art overview of research in soil biogeochemical processes and strategies for greenhouse gas mitigation under climate change Food security and soil health for the rapidly growing human population are threatened by increased temperature and drought, soil erosion and soil quality degradation, and other problems caused by human activities and a changing climate. Because greenhouse gas emission is the primary driver of climate change, a complete understanding of the cycles of carbon and major nutritional elements is critical for developing innovative strategies to sustain agricultural development and environmental conservation. Multi-Scale Biogeochemical Processes in Soil Ecosystems: Critical Reactions and Resilience to Climate Changes is an up-to-date overview of recent research in soil biogeochemical processes and applications in ecosystem management. Organized into three parts, the text examines molecular-scale processes and critical reactions, presents ecosystem-scale studies of ecological hotspots, and discusses large-scale modeling and prediction of global biogeochemical cycles. Part of the Wiley - IUPAC Series on Biophysico-Chemical Processes in Environmental Systems, this authoritative volume: Provides readers with a systematic and interdisciplinary approach to sustainable agricultural development and management of soil ecosystems in a changing climate Features contributions from an international team of leading scientists Examines topics such as soil organic matter stabilization, soil biogeochemistry modeling, and soil responses to environmental changes Discusses strategies for mitigating greenhouse gas emission and improving soil health and ecosystems resilience Includes an introduction to working across scales to project soil biogeochemical responses to climatic change Multi-Scale Biogeochemical Processes in Soil Ecosystems: Critical Reactions and Resilience to Climate Changes is essential reading for scientists, engineers, agronomists, chemists, biologists, academic researchers, consultants, and other professionals whose work involves the nutrient cycle, ecosystem management, and climate change.

Revival: Environmental Particles (1993)
Revival: Environmental Particles (1993)

Author: Jacques Buffle

Publisher: CRC Press

Published: 2018-10-24

Total Pages: 331

ISBN-13: 1351270788

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Environmental Particles, Volume 2 presents a review of the sampling, characterization, and behavior of particles in air, water, sediments, and solids. The book analyzes the formation, aggregation, transport, and conversion of particles, and evaluates the capabilities of physical and chemical analytic methods. It also discusses physicochemical properties of environmental particles, their spectroscopic characterization and colloid chemical properties, and how they affect biochemical and toxicological processes. This book is an important reference for environmental chemists, limnologists, oceanographers, air and soil scientists, analytical chemists, environmental engineers, students, and more.