Prediction of Metal Remobilization from Sediments Under Various Physical/Chemical Conditions. "Design of Experiment Cr & Cu"

Date of Award

6-2015

Degree Type

Thesis

Degree Name

Master of Science (MS)

Department

Chemistry

First Advisor

Eid Alkhatib, Ph.D.

Abstract

Metal contaminants undergo reactions with ligands in water and with surface sites on the solid materials wherein the surface water has contact to binde (Allison and Allison, 2005). Accordingly, sorption reactions occur when metals are bound to a solid matrix while a metal bound to a solid is said to be sorbed. The sorption distribution coefficient Kd (L/kg), more commonly known as the metal partition coefficient, is the ratio of sorbed metal concentration (mg metal/kg sorbing material) to the dissolved metal concentration (mg metal per L of solution) at equilibrium. Metal partition coefficient is significant in terms of metal remobilization from sediments and becomes more complex because of some factors which could create impact. This study would focus on Copper and Chromium (Cu and Cr) and would investigate its partitioning properties under different conditions of salinity, pH, temperature, redox status of water, and temperature. It would attempt to prove the hypothesis that there are no dominant associations among the different factors and yet they are interconnected. To do so, a statistical analysis on data points would be analysed using a statistical software program chosen by the researcher. Multiple regression equations have been generated using the program in order to predict the sorption distribution coefficient and run simulations of each metal under the various conditions of the five factors to be tested.

Comments

Master's thesis submitted to the faculty of Sacred Heart University's Chemistry Program in partial fulfillment of the requirements for the degree of Master of Chemistry.

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