Andere Kunden interessierten sich auch für
![Drinking Water in Nigeria: A Public Health Threat and Burden]( "Drinking Water in Nigeria: A Public Health Threat and Burden")
Drinking Water in Nigeria: A Public Health Threat and Burden59,99 €![Evaluating Alternatives for Drinking Water at Deployed Locations]( "Evaluating Alternatives for Drinking Water at Deployed Locations")
Evaluating Alternatives for Drinking Water at Deployed Locations59,99 €![Solid State Physics Program, The Elastic Properties of Copper and Copper-Nickel Alloys]( "Solid State Physics Program, The Elastic Properties of Copper and Copper-Nickel Alloys")
Solid State Physics Program, The Elastic Properties of Copper and Copper-Nickel Alloys59,99 €![A Chemical and Biological Warfare Threat]( "A Chemical and Biological Warfare Threat")
A Chemical and Biological Warfare Threat59,99 €![Estimation of Atmospheric Precipitable Water Using the Global Positioning System]( "Estimation of Atmospheric Precipitable Water Using the Global Positioning System")
Estimation of Atmospheric Precipitable Water Using the Global Positioning System59,99 €![Dehydrated National Security: Water Scarcity, the Emerging Threat of the 21st Century]( "Dehydrated National Security: Water Scarcity, the Emerging Threat of the 21st Century")
Dehydrated National Security: Water Scarcity, the Emerging Threat of the 21st Century59,99 €![Water Resources: Security Impacts in the Jordan River Basin]( "Water Resources: Security Impacts in the Jordan River Basin")
Water Resources: Security Impacts in the Jordan River Basin59,99 €
The purpose of this research was to investigate orthophosphate as a corrosion inhibitor for copper pipe in a high-alkalinity drinking water system. Specifically, this thesis sought to answer three research questions regarding the impact of orthophosphate treatment, the nature of the mechanism by which orthophosphate controls copper corrosion, and the value of equilibrium modeling in predicting orthophosphate's effects. The research questions were answered through a comprehensive literature review and experimental methodology integrating laboratory jar tests, water sampling and analysis from a field investigation, qualitative solids analysis, and equilibrium model application. This study analyzed field data obtained over the course of a year from a high alkalinity water system into which orthophosphate was added to control copper concentrations. This field research generally supports results previously reported in the literature: in high alkalinity, neutral pH water, a dosage of 3 - 4 mg/L orthophosphate can reduce copper levels in a drinking water system from over 2 mg/L to below the 1.3 mg/L USEPA action level. While surface solid analysis did not provide conclusive evidence confirming the nature of orthophosphate's control mechanisms, jar tests and equilibrium solubility models were demonstrated to provide useful quantitative predictions of how orthophosphate reduces copper concentrations in various waters.