Biological Approaches In Dye Containing Wastewater

The textile industry segment has been continuously expanding and it is reported that the global market was US$1000 billion in 2020. Aside from the fact that textile industry could be profitable and offers several advantages for human life, this industry produces wastewater containing many harmful substances in the form of organic and inorganic moieties. Textile wastewater can lead to serious environmental problems if discharged without treatment. In this first volume of the application of biological mechanisms, processes and units are reviewed in terms of dye degradation and removal. The role of biodegradation, bioaccumulation and biosorption in bio-decolorization are discussed. The book starts with highlighting the fundamentals of aerobic and anaerobic mechanisms having different configurations. The moving bed bioreactor (MBBR), up-flow anaerobic sludge blanket reactors, sequential aerobic/anaerobic batch reactors, membrane bioreactor, etc are also covered in this edition.

This Volume 2 contains essential contributions highlighting the use of biotechnology in dye removal. It begins with an overview of activated sludge process for dye removal along with its limitation is carried out and describes the fundamental concepts of dye-containing textile wastewater treatments, particularly microbial and enzymatic approaches, including the most usual textile wastewater treatments and their trends. It discusses the role microbial biofilms play when employed in the integrated treatment system for effective detoxification, degradation and complete mineralization of pollutants in dye waste effluents. It assesses the most recent advances in the biotransformation of synthetic dyes from wastewater, especially anthraquinone-typed dyes. Phycoremediation as an emerging and efficient technology in dye removal, remediation strategies used by microalgae, and the role of fungi in the dye removal are presented.

Recent Advances in Decolorization and Degradation of Dyes in Textile Effluent by Biological Approaches outlines various eco-friendly, cost effective methods for removal of toxic textile dyes. Large amounts of dye are unbound and released into the environment due to inefficient dyeing processes. The release of wastewater containing dye into the environment has several adverse effects as it is toxic, mutagenic and has other undesirable effects on living organisms. Hence, it is necessary to remove these dyes from industrial effluents to have a sustainable environment. This book deals with conventional as well as advanced effective treatment methods for the removal of dyes in order to increase the domain knowledge of readers. Salient features: Describes physico-chemical characteristics of textile effluent, dye classes and toxicity of dyes commonly used in the textile industry Assembles effective approaches which are used to remove dyes from textile effluent prior to their release into the environment Presents several advanced approaches such as genetic engineering, nanotechnology, immobilized cells or enzymes, biofilms and microbial fuel cells, etc. for the removal of dyes.

The book presents a sequential approach for the treatment of dye wastewater, presenting state-of-the-art techniques based on recent findings. The release of these dyes into the environment is a major threat due to their toxicity, mutagenicity and carcinogenicity and their biotransformation products. It has been at least two decades since researchers have been trying to find interactions between dye molecules and water media, and find new purification methods. This book plays an important role in this field by highlighting the cutting edge results in dye removal and remediation, and discusses in detail the application of various physical, chemical, and biological techniques for the removal of pollutants from water.

This book highlights recent findings of membrane - based dye removal methods along with the application of photocatalytic, nanofiltration and ultrafiltration membrane including membrane – based fibers, metal-organic frameworks, polyethersulfone, ceramic, etc. Among water and wastewater pollutants, dyes have been normally observed and detected in various aquatic solutions, including rivers and lakes. Aesthetic pollution, toxicity, persistent, and carcinogenicity are some of the adverse effects of dyes entering the ecosystem. Although dyes have brought a colourful world, their presence in the environment are responsible for adverse effects on the planet. Diverse physical, chemical and biological methods are available to treat dye contaminated water. This book presents membrane separation technology that has been developed in the past decade to treat different wastewaters, and owning to its effective performance, has garnered the attention of academia and industry alike.

This book highlights novel materials for dye-containing wastewater treatment and presents an up-to-date information on dye degradation/adsorption using new promising materials such as nanocomposites. Development of various industrial sectors, including textile, food, paper, leather, rubber, cosmetic and printing has led to generation of wastewater which contain dye molecules as well as other inorganic and organic compounds. Considering serious health hazards and environmental damage associated with dyes in the environment, researchers and professionals have been attempting to find the most effective methods of treatment. Of late, various composites have received wide attention due to their outstanding properties in wastewater treatment, that are presented in this book.

This book details microbial remediation of azo dyes from wastewater including information on existing methods and technologies, their graduation, the emergence of new technologies, industrial practices, and real-case studies. Emphasis is placed on industrial applications and the elimination of toxic pollutants from wastewater through bacterial approach. Specific aspects discussed include effective separation through new adsorbents / newcomers, ion exchange process, coagulation / formulations, separations, and biological methods from wastewater. This book explains a paradigm shift towards the recovery of materials and energy from azo dye containing wastewater. Features: Provides information on the topic of prokaryotic-based technologies for azo dye degradation in wastewater treatment plant. Describes microbial enzymes and their role in bioremediation of environmental pollutants. Covers industrial acid mine tailing wastes, plastic wastes, distillery, and pulp paper industry effluent. Discusses critical insight into limitations of related technologies. Explains concepts through illustrations, figures, tables, and trivia boxes. This book aims at Researchers, Professionals, Graduate Students in Bioremediation and Environmental Protection, Waste Management, Applied Microbiology, Botany and Plant Biotechnology.

During the dyeing process, losses of colorants to the water sources can be toxic and mutagenic and also decreases light penetration and photosynthesis activity. In recent years, since textile industry can generate large volumes of effluents, textile wastewater treatments have received considerable attention. The aim of this book is to look into textile wastewater treatments shortly. It is designed for readers who study on textile dyeing effluent. I would like to record my sincere thanks to authors for their contributions.