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Author : UNESCO
Publisher : UNESCO Publishing
ISBN 13 : 9231005405
Total Pages : 893 pages
Book Rating : 4.2/5 (31 download)
Download or read book River Culture written by UNESCO and published by UNESCO Publishing. This book was released on 2023-01-05 with total page 893 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James R. Mihelcic
Publisher : John Wiley & Sons
ISBN 13 : 1118741498
Total Pages : 706 pages
Book Rating : 4.1/5 (187 download)
Download or read book Environmental Engineering written by James R. Mihelcic and published by John Wiley & Sons. This book was released on 2014-01-13 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental Engineering: Fundamentals, Sustainability, Design presents civil engineers with an introduction to chemistry and biology, through a mass and energy balance approach. ABET required topics of emerging importance, such as sustainable and global engineering are also covered. Problems, similar to those on the FE and PE exams, are integrated at the end of each chapter. Aligned with the National Academy of Engineering’s focus on managing carbon and nitrogen, the 2nd edition now includes a section on advanced technologies to more effectively reclaim nitrogen and phosphorous. Additionally, readers have immediate access to web modules, which address a specific topic, such as water and wastewater treatment. These modules include media rich content such as animations, audio, video and interactive problem solving, as well as links to explorations. Civil engineers will gain a global perspective, developing into innovative leaders in sustainable development.
Author : D.R. Karsa
Publisher : Springer Science & Business Media
ISBN 13 : 0751402060
Total Pages : 278 pages
Book Rating : 4.7/5 (514 download)
Download or read book Biodegradability of Surfactants written by D.R. Karsa and published by Springer Science & Business Media. This book was released on 1994-12-31 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: The awareness and development of 'biodegradable' surfactants pre-dates current pressures by the environmental movement by nearly three decades, wherein a responsible industry mutually agreed to replace 'hard', non-biodegradable com ponents of household detergents by 'soft', biodegradable alternatives, without course to legislation. The only requirement at that time was for surfactants used in detergents to exhibit a 'primary biodegradability' in excess of 80%; this referring to the disap pearance or removal from solution of the intact surface active material as de tected by specified analytical techniques. This proved useful, as observed environmental impacts of surfactants, e.g. visible foam on rivers, are associated with the intact molecule. Test methods for 'primary biodegradability' were eventually enshrined in EU legislation for nonionic surfactants (Directive 821242/EEC, amended 73/404IEEC) and for anionic surfactants (Directive 8212431EEC, amended 73/405IEEC). No approved test methods and resultant legislation have been developed for cationic and amphoteric surfactants to date. The environmental classification of chemical substances, which of course includes surfactants, and associated risk assessment utilises a second criterion 'ready biodegradability'. This may be assessed by a number of methods which monitor oxygen uptake (BOD), carbon dioxide production or removal of dis solved organic carbon (DOC). Some surfactants which comply with the above Detergents Directive are borderline when it comes to 'ready biodegradability'.
Author :
Publisher :
ISBN 13 :
Total Pages : 352 pages
Book Rating : 4.E/5 ( download)
Download or read book EPA-600/3 written by and published by . This book was released on 1981 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sylvia S. Talmage
Publisher : CRC Press
ISBN 13 : 0429610629
Total Pages : 387 pages
Book Rating : 4.4/5 (296 download)
Download or read book Environmental and Human Safety of Major Surfactants written by Sylvia S. Talmage and published by CRC Press. This book was released on 2020-04-08 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book summarizes and reviews the environmental and human safety of two classes of nonionic surfactants-alcohol ethoxylates (AE) and alkylphenol ethoxylates (APE). This unique resource contains critical data from published sources as well as from unpublished studies submitted by Soap and Detergent Association member companies. It reviews information on product chemistry and analysis, biodegradation, environmental levels (including fate and distribution), aquatic toxicity, and human safety. Recently developed analytical techniques for the extraction, separation, detection, and measurement of nonionic surfactants and their metabolites in environmental samples are described. Results of biodegradation studies performed with a variety of test systems are tabulated, as are results of field studies at wastewater treatment plants. Reported comparisons of environmental levels with results of acute and chronic aquatic toxicity tests are provided. The information on the toxicity and irritation potential of AE and APE surfactants includes data from in vitro, mammalian, and human studies.
Author : James R. Mihelcic
Publisher : John Wiley & Sons
ISBN 13 :
Total Pages : 362 pages
Book Rating : 4.3/5 (91 download)
Download or read book Fundamentals of Environmental Engineering written by James R. Mihelcic and published by John Wiley & Sons. This book was released on 1999-01-04 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamentals of Environmental Engineering is the outgrowth of a team-taught course at Michigan Technological University which provides a bridge for a student to move from their basic science and math courses to their introductory and upper level environmental engineering courses which apply those fundamentals to local and global environmental problems. Fundamentals of Environmental Engineering presents those required fundamentals along with close to one hundred applications for a diverse set of relevant environmental situations including multimedia issues encompassing engineered treatment and chemical fate and transport in air, water, and soil. This text is not just intended for students majoring in civil, environmental engineering or environmental science, but for students from a wide variety of disciplines who may work on environmental problems or incorporate environmental concerns into their specialty.
Author : University of California, San Francisco. Radiological Laboratory
Publisher :
ISBN 13 :
Total Pages : 158 pages
Book Rating : 4.3/5 (91 download)
Download or read book Progress Report for Period Ending ... written by University of California, San Francisco. Radiological Laboratory and published by . This book was released on 1962-09 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jürgen Falbe
Publisher : Springer Science & Business Media
ISBN 13 : 3642715451
Total Pages : 568 pages
Book Rating : 4.6/5 (427 download)
Download or read book Surfactants in Consumer Products written by Jürgen Falbe and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: In to days market, custom formulated surfactants are offered for a wide range of applications. The need for surfactants in detergents, cleaning agents, cosmetics & toiletries is second only to an expanding demand in industrial applications. But even within the non-industrial areas the demands have undergone significant changes in recent years. For example, washing and cleaning temperatures have substantially decreased with increased energy conservation attitudes, and more stringent regulatory requirements in the area of ecology and toxicology are leading to new product profiles. New manufacturing technologies and an increased utilization of natural raw materials also factor into this continuing evolution. These changes and trends have been described in numerous publications. However, a summary and survey of these developments is currently missing. The book presented here "Surfactants in Consumer Products" is intended to close this gap. The editor and authors dedicate this work to Dr. Dr. h.c. Konrad Henkel on the occasion of his 70th birthday. Dr. Henkel, himself a scientist and industrialist, contributed signifi cantly to developments in the surfactant field. In the nineteen-fifties, he initiated the change from soap based detergents to synthetic detergents within Henkel. At the same time, dishwashing detergents utilizing various synthetic surfactants were also developed, and became the basis for modem manual and mechanical dishwashing.
Author :
Publisher :
ISBN 13 :
Total Pages : 190 pages
Book Rating : 4.E/5 ( download)
Download or read book EPA-660/3 written by and published by . This book was released on 1973-07 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 120 pages
Book Rating : 4.:/5 (31 download)
Download or read book Nearshore Areas of the Great Lakes, 2009 written by and published by . This book was released on 2009 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Nancy H. Hensel
Publisher : Springer Nature
ISBN 13 : 3030535592
Total Pages : 330 pages
Book Rating : 4.0/5 (35 download)
Download or read book International Perspectives on Undergraduate Research written by Nancy H. Hensel and published by Springer Nature. This book was released on 2020-12-21 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edited volume explores how undergraduate research and research-based teaching is being implemented in countries around the world. Leading educators come together to discuss commonly accepted definitions of undergraduate research, country-specific models and partnerships for student research, university policies and practices to support faculty and staff who engage students in research, and available assessment data that supports the effectiveness of undergraduate research as a means to increase student engagement and academic achievement. As undergraduate research has spread around the world, professors, administrators, and policymakers benefit by learning about other approaches and models of undergraduate research.
Author : Peter E. T. Douben
Publisher : John Wiley & Sons
ISBN 13 : 047086429X
Total Pages : 404 pages
Book Rating : 4.4/5 (78 download)
Download or read book PAHs written by Peter E. T. Douben and published by John Wiley & Sons. This book was released on 2003-07-25 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polycyclic aromatic hydrocarbons (PAHs), or polyarenes, are one of the largest and most structurally diverse class of organic molecules known. High percentages of polyarenes, representing a wide range of molecular sizes and structural types, are present in coal tars and petroleum residues. The major sources of PAHs are crude oil, coal and oil shale. The fuels produced from these fossil sources constitute the primary source of energy for the industrial nations of the world, and the petrochemicals from these raw materials are the basis of the synthetic fibre and plastics industries. PAHs are however, widespread pollutants and their impact on the environment and human health must be monitored and controlled. This book will review and assess our scientific understanding of the ecological exposure and effects PAHs have in different environments and habitats. It will accomplish this by taking the recipients of the pollution in the environment as starting points and working its way back through pathways to access what is required for our understanding of effects and rationale for control. Although this book will concentrate on ecological exposure of PAHs, the general impacts of PAHs on human populations will be touched upon. It is thought to be the first book to focus on the ecological aspects of PAHs.
Author : Environmental Research Laboratory (Duluth, Minn.)
Publisher :
ISBN 13 :
Total Pages : 230 pages
Book Rating : 4.:/5 (319 download)
Download or read book A National Compendium of Freshwater Fish and Water Temperature Data written by Environmental Research Laboratory (Duluth, Minn.) and published by . This book was released on 1979 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : M. Munawar
Publisher : Aquatic Ecosystem Health & Mgmt Soc
ISBN 13 : 9788178985923
Total Pages : 0 pages
Book Rating : 4.9/5 (859 download)
Download or read book State of Lake Superior written by M. Munawar and published by Aquatic Ecosystem Health & Mgmt Soc. This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lake Superior is the largest ultra-oligotrophic freshwater lake in the world. This book includes 18 peer-reviewed papers that provide data and information about the physical, chemical, and biological regimes of this colossal lake. The information contained in the book is a landmark contribution to the science of the large lakes and marks the culmination of a dream to produce high quality, peer-reviewed books on each of the Laurentian Great Lakes.
Author : James D. McKinney
Publisher : Butterworth-Heinemann
ISBN 13 :
Total Pages : 680 pages
Book Rating : 4.:/5 (3 download)
Download or read book Environmental Health Chemistry written by James D. McKinney and published by Butterworth-Heinemann. This book was released on 1981 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Greg L. Larson
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.3/5 (121 download)
Download or read book Benthic Macroinvertebrate Community Structure in Relation to Water Quality and Habitat in the Upper Pecos River, Texas written by Greg L. Larson and published by . This book was released on 1996 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Paul Alan Cox
Publisher : W H Freeman & Company
ISBN 13 : 9780716735632
Total Pages : 238 pages
Book Rating : 4.7/5 (356 download)
Download or read book Nafanua written by Paul Alan Cox and published by W H Freeman & Company. This book was released on 1999 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: Paul Cox describes his research and adventures in Samoa, work that led to him being hailed by TIME magazine as a hero of medicine and awarded the Goldman Environmental Prize. Working closely with the native healers, Cox studied traditional rainforest remedies and is credited with finding natural drugs that can be used in treating AIDS, discovering a rare species of flying fox, launching an international campaign to save a 30,000-acre rainforest and helping to rebuild a village destroyed by a hurricane. Cox's respect for the traditional villagers and his excitement and perseverance make Nafunua a story of scientific and personal discovery.
