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"Phosphorus Environmental aspects"
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The devil's element : phosphorus and a world out of balance
The story of phosphorus spans the globe and vast tracts of human history. The race to mine phosphorus took people from the battlefields of Waterloo, which were looted for the bones of fallen soldiers, to the fabled guano islands off Peru, the Bone Valley of Florida, and the sand dunes of the Western Sahara. Over the past century, phosphorus has made farming vastly more productive, feeding the enormous increase in the human population. Yet, as the author harrowingly reports, our overreliance on this vital crop nutrient is causing toxic algae blooms and \"dead zones\" in waterways from the coasts of Florida to the Mississippi River basin to the Great Lakes and beyond. This book also explores the alarming reality that diminishing access to phosphorus poses a threat to the food system worldwide--which risks rising conflict and even war. -- Adapted from publisher's description.
Book
Phosphorus - Polluter and Resource of the Future - Removal and Recovery from Wastewater
Phosphorus has always been both a curse and a blessing. On the one hand, it is essential for all life forms and cannot be replaced by anything. On the other hand, wastewater treatment aims to minimize phosphorus concentrations in wastewater in order to minimize its discharge into rivers and lakes, where eutrophication caused by high phosphorus concentrations would lead to excessive plant growth. Phosphorus is extracted from rock phosphate deposits, which are finite and non-renewable. And as the issue of resource conservation is the focus of attention worldwide, phosphorus must be used sustainably. This includes recycling of secondary phosphates, efficient extraction and treatment of raw phosphate as well as its efficient use.
eBook
Phosphorus in the Enviroment
The Novartis Foundation Series is a popular collection of the proceedings from Novartis Foundation Symposia, in which groups of leading scientists from a range of topics across biology, chemistry and medicine assembled to present papers and discuss results. The Novartis Foundation, originally known as the Ciba Foundation, is well known to scientists and clinicians around the world.
eBook
Phosphorus
Phosphorus has always been both a curse and a blessing.On the one hand, it is essential for all life forms and cannot be replaced by anything.On the other hand, wastewater treatment aims to minimize phosphorus concentrations in wastewater in order to minimize its discharge into rivers and lakes, where eutrophication caused by high phosphorus.
eBook
Phosphorus in the environment : its chemistry and biochemistry
This symposium report is an effort by a diversified group of scientists to look at a wide general problem which faces mankind: the proper use of the world's phosphate resources.
eBook
Tools for assessing phosphorus loss from Nordic agriculture
The proceedings from the Nordic Phosphorus workshop, February 2004, address the role of decision tools in the process of abating phosphorus (P) losses from agricultural land in the Nordic and Baltic countries. Compliance with the Water Framework Directive (WFD) requires these countries to substantially reduce diffuse P losses from agricultural land. Uniform national reduction policies aimed solely at lowering P inputs to agricultural land are at best inefficient and at worst unsuitable for reducing diffuse P losses sufficiently over the next two decades. Instead high-risk areas for P losses in agricultural landscapes have to be targeted. The identification of high-risk areas and the administrative handling of mitigation strategies call for an objective risk assessment framework in the form of a decision and mitigation-planning tool. Such tools are viewed as an important step in the WFD process. A single conceptual framework for a P decision tool is expected to apply in the Nordic and Baltic countries, requiring though local adaptations.Researchers, landmanagers and landusers discuss the scope of different decision tools, practical experiences with assessing P loss, cost-effectiveness of mitigation and future developments in user-friendly tools for the Nordic and Baltic region.
eBook
Watershed management for potable water supply
In 1997, New York City adopted a mammoth watershed agreement to protect its drinking water and avoid filtration of its large upstate surface water supply. Shortly thereafter, the NRC began an analysis of the agreement's scientific validity.
The resulting book finds New York City's watershed agreement to be a good template for proactive watershed management that, if properly implemented, will maintain high water quality. However, it cautions that the agreement is not a guarantee of permanent filtration avoidance because of changing regulations, uncertainties regarding pollution sources, advances in treatment technologies, and natural variations in watershed conditions.
The book recommends that New York City place its highest priority on pathogenic microorganisms in the watershed and direct its resources toward improving methods for detecting pathogens, understanding pathogen transport and fate, and demonstrating that best management practices will remove pathogens. Other recommendations, which are broadly applicable to surface water supplies across the country, target buffer zones, stormwater management, water quality monitoring, and effluent trading.
eBook