Removal of iron and manganese with ozone. Mohammad Younis Abukhudair

Civil Engineering

1987

Abstract

The main objective of this study was to develop kinetic expressions for the oxidation of iron(II) and mangnese (II) with ozone, and also to determine the effect of organic complexation on the rate of oxidation of iron(II) and manganese (II). The removal of iron and manganese is important in drinking water supply as many problems are associated with presence of these metals in concentrations greater than 0.3mg/L and 0.05 mg/l, respectively.

The results of the study have shown that all the experiments conducted for the pure water system followed a zero-order reaction with respect to iron(II). The final rate expression is:

X = ( 1 - [Fe(II) ] / [ Fe(II) ]? ) = k' t

Some of the reactions for the organic complexation system followed the above expression, but the rest of them followed this general kinetic expression:

d[Fe(II) ] / dt = -k [Fe(II)]n

It has been found out that iron (II) does not remain in solution at pH values above 7. However, complte amount of Mn(II) is found to remain in solution up to pH of 9.

Removal of Iron and Manganese with Ozone

by

Mohammad Younis Abukhudair

A Thesis Presented to the

FACULTY OF THE COLLEGE OF GRADUATE STUDIES

KING FAHD UNIVERSITY OF PETROLEUM & MINERALS

DHAHRAN, SAUDI ARABIA

In Partial Fulfillment of the Requirements for the Degree of

MASTER OF SCIENCE

In

CIVIL ENGINEERING

June, 1987