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Abstract

The titanium dioxide pigment industry at present disposes
of a large quantity of acid-iron waste by dumping it at sea. The
ensuing interactions result in a red discolouration of the environment
which is a source of increasing public concern. A study has
been made of the reactions that occur when an effluent solution of
ferrous sulphate in sulphuric acid is added to sea-water.
On addition of the effluent solution there is an initial
rapid reaction between the effluent acid and the bicarbonate buffer
of sea-water. The ferrous iron content is dispersed, is subsequently
oxidised and precipitates as a form of ferric hydroxide. In seawater
ferrous iron solubility is controlled by the solubility of
ferrous carbonate. Solubility calculations, based on available thermodynamic
data at 25 ° C, show that for the composition of typical
industrial effluents there is little possibility of ferrous carbonate
precipitating on effluent dispersion in sea-water.

Item Type:	Thesis - Research Master
Authors/Creators:	George, Christopher Walter
Keywords:	Waste disposal in the ocean, Marine sediments, Marine pollution
Copyright Holders:	The Author
Copyright Information:	Copyright 1977 the Author - The University is continuing to endeavour to trace the copyright owner(s) and in the meantime this item has been reproduced here in good faith. We would be pleased to hear from the copyright owner(s).
Additional Information:	Title varies. Thesis (M.Sc.) - University of Tasmania, 1977. Includes bibliographical references
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