
Microplastics
Description
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The first part of the book provides an overview of plastics types, how they are released to the environment, and how they interact with organisms. This part also provides a background for several salient aspects of microplastics hazards (e.g., attachment of toxic chemicals, toxicity to organisms). Special attention will be paid to how microplastics decompose in the environment (which is significant in terms of mobility of toxicity). Subsequent chapters address how to sample and identify microplastics. The second part of the book examines technologies for removal of microplastics from water, wastewater, and soil. Biological, chemical, and physical technologies are presented--technologies that can destroy minute plastics or convert them into benign products. Theory of operation, practical considerations, and possible environmental impacts of their use are discussed.
Key aspects include:
* technologies available for removal of microplastics from wastewater and surface water;
* how various toxins which are sorbed to microplastics adversely affect wastewater treatment processes;
* technologies at the pilot- and field stage for removal of microplastics from sediment; and
* the distribution of microplastics in the atmosphere.
Written by John Pichtel, author of the acclaimed Fundamentals of Site Remediation, and Mathew Simpson.
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Persons
Mathew Simpson is a PhD candidate in environment, geology and natural resources at Ball State University. His research focuses on the characterization and ecotoxicology of microplastics in freshwater ecosystems. Mr. Simpson has experience in water-quality studies developing water, sanitation, and hygiene programs and in phase 1 and 2 environmental site assessments.
Content
- Cover
- Half Title
- Series Page
- Title Page
- Copyright Page
- Contents
- Preface
- Acknowledgments
- Part I: Characterization of Microplastics
- Chapter 1: Introduction
- Background
- The Plastics Waste Problem
- Management of Plastic Waste
- Microplastics
- Size Ranges of MPs
- Morphology of MPs
- Hazards of MPs
- The Food Web
- Hazards and Humans
- MPs Sorb and Transport Contaminants
- Closing Statements
- References
- Chapter 2: Polymer Chemistry and Properties
- Introduction
- Classification of Polymers
- Thermoplastics and Thermosets
- Elastomers
- Polymerization Method
- Chain Type
- Copolymer Blends
- Crystallinity
- Additives
- Plasticizers
- Flame Retardants
- Antioxidants
- Heat Stabilizers
- Curing Agents
- Slip and Antiblocking Agents
- Antistatic Agents
- Biocides
- Colorants
- Unreacted Monomers and Oligomers
- Closing Statements
- References
- Chapter 3: Microplastic Types
- Introduction
- Primary MPs
- Nurdles
- Microbeads
- Composition
- Implications
- Secondary MPs
- Conversion of Macroplastics to Secondary MPs
- Photodegradation
- Air Pollution
- Hydrolysis
- Thermal
- Mechanical
- Microbial
- Important Secondary MPs
- Tire and Road Wear Particles
- Particulates from Tire Wear
- Plastics in Road Construction
- Road-Marking Materials
- Thermoplastic Road-Marking Paint
- Water-Based Paints
- Solvent-Based Paints
- Two-Component Paints
- Road-Marking Tape
- Hazardous Substances in Road-Marking Products
- Microfibers
- Manufacture
- Washing
- Disposal
- Implications
- Closing Statements
- References
- Chapter 4: Distribution of Microplastics in the Biosphere
- Introduction
- MPs in Marine Ecosystems
- Beaches
- MPs in Freshwater Ecosystems
- MPs in Terrestrial Ecosystems
- Closing Statements
- References
- Chapter 5: Interactions of Contaminants with Microplastics
- Introduction
- Sorption of Heavy Metals to MPs
- Mechanisms: Factors Affecting Metal Sorption by MPs
- Polymer Type
- Metals Involved
- Solution pH
- Dissolved Organic Matter
- Contribution of Biofilms
- Extent of Particle Weathering
- Sorption of Persistent Organic Pollutants to MPs
- Mechanisms of Hydrocarbon Sorption
- Sorption of Radionuclides to MPs
- Sorption of Antibiotics
- Sorption of Microorganisms to MPs
- Sorption of Pathogenic Microorganisms
- Sorption of Drug-Resistant Bacteria
- Implications: The Vector Capabilities of MPs
- Closing Statements
- References
- Chapter 6: Collection, Identification, and Quantification of Microplastics
- Introduction
- Field Sampling
- Sampling in Water
- Sampling Sediment and Soil
- Collection of Atmospheric Samples
- Separation of MPs from Environmental Media
- Flotation/Density Separation
- Sieving and Filtration
- Sample Processing: Removal of Residual Organic Matter
- Visual Sorting of MPs
- Analytical Techniques for Polymer Identification
- FTIR Spectroscopy
- Raman Spectroscopy
- Pyrolysis-GC/MS
- Electron Microscopy
- Fluorescence
- Quality Control
- Closing Statements
- References
- Part II: Separation of Microplastics from Water and Sediment
- Chapter 7: Removal of Microplastics from Wastewater
- Introduction
- Unit Operations at WWTPs
- MP Removal during Pretreatment
- Screening
- Grit Chamber
- MP Removal in Primary Treatment
- Flotation
- MP Removal in Secondary Treatment
- MP Removal in the Activated Sludge Process
- MP Removal in Biofilm-Related Process
- Membrane Bioreactors
- MP Removal in Tertiary Treatment
- Rapid Sand Filtration
- Dissolved Air Flotation
- Reverse Osmosis
- Coagulation
- Closing Statements
- References
- Chapter 8: Recovery of Microplastics from Sediment
- Introduction
- Practical Issues in Particle Separation
- Density Separation
- Separation Solutions
- Technologies for Density Separation
- Practical Issues with Density Separation
- Elutriation
- Froth Flotation
- The Reactor Vessel
- Relevant Particle Properties
- Flotation Reagents
- Collectors
- Frothers
- Jigging
- Design and Operation of the Jigging Vessel
- The Jigging Cycle
- Feed Characteristics
- Particle Density
- Particle Size
- Particle Shape
- Bed Depth and Feed Rate
- Jigs for Plastic-Plastic Separation
- Electrostatic Separation
- Closing Statements
- References
- Part III: Decomposition of Microplastics
- Chapter 9: Chemical Technologies for Microplastic Destruction
- Introduction
- Advanced Oxidation Processes
- Ozone and Ozone AOPs
- O3/H2O
- O3/UV
- Ozone and Microplastics
- The Fenton Reaction and Fenton-Related AOPs
- The Fenton Reactor
- The Photo-Fenton Process
- Homogeneous Photoelectro-Fenton Process
- Fenton and Microplastics
- Wet Air Oxidation
- The WAO Reactor
- Closing Statements
- References
- Chapter 10: Heterogeneous Photocatalytic Oxidation
- Introduction
- Photocatalysis on Microplastics-Mechanisms
- Photocatalysis on Microplastics-Applications
- Titanium Dioxide
- Zinc Oxide
- Other Catalysts
- Photocatalytic Reactors
- Closing Statements
- References
- Chapter 11: Decomposition by Microorganisms
- Introduction
- General Process
- Bacterial-Directed MP Degradation
- New Functional Groups and Intermediates
- Bacterial Consortia
- Fungal-Mediated MP/Plastic Degradation
- Other Microbial Types
- Factors Affecting Microbial-Mediated Degradation of MPs/Plastics
- Polymer Properties
- Environmental Factors
- Temperature
- Oxygen
- pH
- Nutrients
- Organism-Related Factors
- The Significance of Biofilms
- MPs Degradation Using Bioreactor Technology
- Pretreatment of the MP Feedstock
- The Bioreactor
- Continuous Stirred Tank Bioreactor
- Anaerobic Phase
- Other Innovative Biological Technologies
- Closing Statements
- References
- Chapter 12: Final Remarks
- References
- Acronyms Used in This Book
- Glossary of Terms
- Index
- About the Authors
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