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Internal Treatment of Process Waters in Paper Production by Dissolved Air Flotation with Newly Developed Chemicals. 1. Laboratory Tests

Miranda Carreño, Rubén and Negro Álvarez, Carlos Manuel and Blanco Suárez, Ángeles (2009) Internal Treatment of Process Waters in Paper Production by Dissolved Air Flotation with Newly Developed Chemicals. 1. Laboratory Tests. Industrial & Engineering Chemistry Research , 48 (4). pp. 2199-2205. ISSN 0888-5885

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Official URL: http://pubs.acs.org/doi/abs/10.1021/ie801047h

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Abstract

New chemicals, based on the synergistic effect between inorganic polyaluminium salts and organic cationic
polyelectrolytes, have been tested for the chemical optimization of a dissolved air flotation (DAF) unit, used
as internal treatment of process waters in a paper mill based on 100% recovered paper. Laboratory tests have
demonstrated that polyamine modifications of the aluminum salts are the most efficient in the removal of
contaminants, the combination of a polyaluminium nitrate sulfate salt and a polyamine being the most efficient.
This chemical has been studied under different conditions, such as different dosages or in combination with
a flocculant for the treatment of waters from different paper grades production, and the results have demonstrated
a good performance at laboratory scale. Therefore, a field trial has been recommended for assessing its potential
benefits at mill scale, which will be described in a future paper.

Item Type:Article
Additional Information:“This document is the Accepted Manuscript version of a Published Work that appeared in final form in Industrial & Engineering Chemistry Research, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://pubs.acs.org/doi/abs/10.1021/ie801047h"
Uncontrolled Keywords:New chemicals, Dissolved air flotation, Paper recycling, Water treatment, Polyamine, Aluminium salts
Subjects:Sciences > Chemistry > Chemical engineering
Sciences > Chemistry > Water
Sciences > Chemistry > Environmental conditions
Sciences > Chemistry > Paper industry
ID Code:11888
Deposited On:01 Mar 2011 12:25
Last Modified:06 Feb 2014 09:12

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