Microbial Biofilms In Bioremediation And Wastewater Treatment

Biofilms represent the natural living style of microbial communities and play a pivotal role in biogeochemical cycles and natural attenuation. Biofilms can be engineered for biodegradation and biotransformation of organic and inorganic contaminants, for both in situ bioremediation and ex situ treatment in bioreactors. This book focuses on microbial biofilms and their potential technological applications for sustainable development. It covers recent advances in biofilm technologies for contaminant remediation coupled to recovery of resources and serves as a complete reference on the science and technology behind biofilm mediated bioremediation and wastewater treatment.

The central theme of the book is the flow of information from experimental approaches in biofilm research to simulation and modeling of complex wastewater systems. Probably the greatest challenge in wastewater research lies in using the methods and the results obtained in one scientific discipline to design intelligent experiments in other disciplines, and eventually to improve the knowledge base the practitioner needs to run wastewater treatment plants. The purpose of Biofilms in Wastewater Treatment is to provide engineers with the knowledge needed to apply the new insights gained by researchers. The authors provide an authoritative insight into the function of biofilms on a technical and on a lab-scale, cover some of the exciting new basic microbiological and wastewater engineering research involving molecular biology techniques and microscopy, and discuss recent attempts to predict the development of biofilms. This book is divided into 3 sections: Modeling and Simulation; Architecture, Population Structure and Function; and From Fundamentals to Practical Application, which all start with a scientific question. Individual chapters attempt to answer the question and present different angles of looking at problems. In addition there is an extensive glossary to familiarize the non-expert with unfamiliar terminology used by microbiologists and computational scientists. The colour plate section of this book can be downloaded by clicking here. (PDF Format 1 MB)

Pollutants are increasing day by day in the environment due to human interference. Thus, it has become necessary to find solutions to clean up these hazardous pollutants to improve human, animal, and plant health. Microbial Biotechnology in Environmental Monitoring and Cleanup is a critical scholarly resource that examines the toxic hazardous substances and their impact on the environment. Featuring coverage on a broad range of topics such as pollution of microorganisms, phytoremediation, and bioremediation, this book is geared towards academics, professionals, graduate students, and practitioners interested in emerging techniques for environmental decontamination.

Biofilms are the default mode-of-life for many bacterial species. The three-dimensional structure of the biofilm provides the associated microbial communities with additional protection from predation, toxic substances and physical perturbation. The variety of microniches provided by the biofilm also promotes a huge diversity of microbial life and metabolic potential. These complex and highly structured communities help to maintain the health of soils and waters. Current applications of biofilms include the degradation of toxic substances in soil and water, the commercial production of chemicals, and the generation of electricity. However, biofilm-based infections cause harm to millions of humans annually. In addition, biofilms can affect the quality and yield of crops and cause biofouling and microbially-induced corrosion. In this book, leading scientists provide an up-to-date review of the latest scientific research on these fascinating microbial communities and predict future trends and growth areas in biofilm-related research. Under the expert guidance of the editors Gavin Lear and Gillian Lewis, authors from around the world have contributed critical reviews on the most topical aspects of current biofilm research. Subjects covered include quorum sensing and social interactions in microbial biofilms, biofilms in disease, plant-associated biofilms, biofilms in the soil, applications in bioremediation, biofilms in wastewater treatment, corrosion and fouling, aquatic biofilms, microbial fuel cells, and catalytic biofilms. The book is essential for everyone interested in biofilms and their applications. It is also highly recommended for environmental microbiologists, soil scientists, medical microbiologists, bioremediation experts and microbiologists working in biocorrosion, biofouling, biodegradation, water microbiology, quorum sensing and many other areas.

The abundance of organic pollutants found in wastewater affect urban surface waters. Traditional wastewater management technologies focus on the removal of suspended solids, nutrients and bacteria, however, new pollutants such as synthetic or naturally occurring chemicals are often not monitored in the environment despite having the potential to enter the environment and cause adverse ecological and human health effects. Collectively referred to as "emerging contaminants," they are mostly derived from domestic activities and occur in trace concentrations ranging from pico to micrograms per liter. Environmental contaminants are resistant to conventional wastewater treatment processes and most of them remain unaffected, causing contamination of receiving water. This in turn leads to the need for advanced wastewater treatment processes capable of removing environmental contaminants to ensure safe fresh water sources. This book provides an up-to-date overview of the current bioremediation strategies, including their limitations, challenges and their potential application to remove environmental pollutants. It also introduces the latest trends and advances in environmental bioremediation, and presents the state-of-the-art in biological and chemical wastewater treatment processes. As such, it will appeal to researchers and policy-makers, as well as undergraduate and graduate environmental sciences students.

This title includes a number of Open Access chapters. The quantity and quality of waste generated and discharged into natural water bodies is a topic of serious concern. Consequently, there is a need for different strategies to address wastewater treatment and subsequent reuse, especially in arid and semi-arid areas where water shortages are the rule. Biological treatment processes constitute crucial tools in the biodegradation of organic matter, transformation of toxic compounds into harmless products, and nutrient removal in wastewater microbiology. Edited by a professor of genetics and microbiology with extensive research, this compendium provides an overview of the most current research into many facets of wastewater bioremediation. The book is broken into three sections: microbial communities for wastewater treatment, environmental factors, and treatments. It provides discussions on biological treatment processes for different types of wastewater, such as municipal wastewater and wastewater from tanneries; how environmental factors such as season dynamics affect the diversity of bacteria; and applications and treatment. The range of topics presented will be valuable for biological engineers and others involved with wastewater management. Researchers will find a wealth of studies that will prove fruitful for future investigation.

Biofilms are of great practical importance for beneficial technologies such as water and wastewater treatment and bioremediation of groundwater and soil. In other settings biofilms cause severe problems, for example in 65% of bacterial infections currently treated by clinicians (particularly those associated with prosthetics and implants), accelerated corrosion in industrial systems, oil souring and biofouling. Until recently, the structure and function of biofilms could only be inferred from gross measures of biomass and metabolic activity. This limitation meant that investigators involved in biofilm research and application had only a crude understanding of the microbial ecology, physical structure and chemical characteristics of biofilms. Consequently, opportunities for the exploitation and control of biofilms were very limited. The past decade has witnessed the development of several new techniques to elucidate the structure and function of biofilms. Examples include: the use of molecular probes that identify different microbes in complex communities as well as their metabolic functions; the use of microsensors that show concentration gradients of key nutrients and chemicals; the use of confocal laser scanning microscopy to describe the physical structure of biofilms and the development of a new generation of mathematical models that allow for the prediction of biofilm structure and function. However, much progress remains to be made in efforts to understand, control and exploit biofilms. This timely book will introduce its readers to the structure and function of biofilms at a fundamental level as determined during the past decade of research, including: Extracellular polymers as the biofilm matrix; Biofilm phenotype (differential gene expression, interspecies signalling); Biofilm ecology; Biofilm monitoring; Resistance of biofilms to antimicrobial agents and Biofilm abatement. Biofilms in Medicine, Industry and Environmental Technology offers a holistic and multi-disciplinary description of the topic, including biofilm formation and composition, but also biofilm monitoring, disinfection and control. All these aspects are presented from three points of views: medical, industrial and environmental biotechnological in a compact, easy to read format.

Microbial biofilms have both positive and negative effects. This book considers new ways of controlling environmental microbial biofilm such as using phages, nanotechnology, and newly discovered microbial enzymes. A team of contributors shares current, relevant and original research to add weight and recognition to the book. Also, each chapter provides enlightening and relevant tabular information, charts, and illustrations. The book is, therefore, informative, precise, useful and easily digested by users.