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Inorganic metal polymers: preparation and characterization
Author(s) -
Gray Kimberly A.,
Yao Chonghua,
O'Melia Charles R.
Publication year - 1995
Publication title -
journal ‐ american water works association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.466
H-Index - 74
eISSN - 1551-8833
pISSN - 0003-150X
DOI - 10.1002/j.1551-8833.1995.tb06350.x
Subject(s) - cationic polymerization , ferric , polyelectrolyte , chloride , aluminium , salt (chemistry) , metal , chemistry , polymer , polymerization , raw material , inorganic chemistry , polymer chemistry , chemical engineering , organic chemistry , engineering
It is possible to produce stable preparations of partially neutralized aluminum chloride solutions in which cationic aluminum polyelectrolytes predominate, but attempts to produce similar stable preparations containing cationic iron(III) polyelectrolytes were unsuccessful. One method to improve the effectiveness of inorganic metal coagulants in water treatment is to partially neutralize concentrated metal salt solutions prior to their addition to the raw water and thus preform polymeric metal species, the actual coagulants. In this way coagulant chemistry can be controlled and proper solution conditions for the formation of desired coagulant species can be maintained. This article compares polymeric preparations of aluminum and ferric chloride salts with respect to preparation parameters and the extent and stability of polymerization.