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The Effect of Orthophosphate as a Copper Corrosion Inhibitor in High Alkalinity Drinking Water Systems

Stephen Grace

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ISBN 10: 1249592534 / ISBN 13: 9781249592532
Published by BiblioScholar
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100 pages. Dimensions: 9.7in. x 7.4in. x 0.2in.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 orthophosphates 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 mgL orthophosphate can reduce copper levels in a drinking water system from over 2 mgL to below the 1. 3 mgL USEPA action level. While surface solid analysis did not provide conclusive evidence confirming the nature of orthophosphates control mechanisms, jar tests and equilibrium solubility models were demonstrated to provide useful quantitative predictions of how orthophosphate reduces copper concentrations in various waters. This item ships from multiple locations. Your book may arrive from Roseburg,OR, La Vergne,TN. Bookseller Inventory # 9781249592532

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Bibliographic Details

Title: The Effect of Orthophosphate as a Copper ...

Publisher: BiblioScholar

Binding: Paperback

Book Condition:New

Book Type: Paperback

About this title

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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.

About the Author:

Stephen Grace is an accomplished author and historian, devoted to both Colorado's museums and its mountains. His novel, "Under Cottonwoods," was a Book Sense 76 selection. He lives in Boulder, Colorado.

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