TY - JOUR
T1 - Effect of base addition rate on the preparation of partially neutralized ferric chloride solutions
AU - Liu, Ta Kang
AU - Chian, Edward S.K.
N1 - Funding Information:
This experiment was made possible by funding from the Georgia Tech Research Institute (GTRI). The authors are grateful for its financial support. Special thanks to Dr. Christine Tiller for her valuable help in using the photon correlation spectroscope. The authors thank Dr. Appiah Amirtharajah, Dr. Costas Tsouris, Dr. Sotira Z. Yiacoumi, and Dr. Jeffrey F. Morris for their crucial suggestions and comments.
PY - 2005/4/15
Y1 - 2005/4/15
N2 - Cationic polymers prepared from partially neutralized ferric chloride solutions were investigated using photon correlation spectroscopy (PCS) techniques. To study the speciation and yield of the polymers, FeCl3 solutions were hydrolyzed by adding NaHCO3 solution for a range of hydrolysis ratios (B=[OH]/FeT) of 0 to 2.0 under different base addition rates. It was observed that the prepared solution has a higher degree of polymerization at a higher base addition rate. The "B rate" (RB, 1/time), i.e., the rate of change of B during preparation, was found to have a dramatic effect on the speciation of the partially neutralized ferric chloride solution. High-yield inorganic iron(III) polymer (∼80%) can be produced in a specific range of B rates. These iron(III) polymers, having a size ranging from 3 to 7 nm, were stable without precipitation of ferric hydroxide microcolloids after aging for 2 weeks.
AB - Cationic polymers prepared from partially neutralized ferric chloride solutions were investigated using photon correlation spectroscopy (PCS) techniques. To study the speciation and yield of the polymers, FeCl3 solutions were hydrolyzed by adding NaHCO3 solution for a range of hydrolysis ratios (B=[OH]/FeT) of 0 to 2.0 under different base addition rates. It was observed that the prepared solution has a higher degree of polymerization at a higher base addition rate. The "B rate" (RB, 1/time), i.e., the rate of change of B during preparation, was found to have a dramatic effect on the speciation of the partially neutralized ferric chloride solution. High-yield inorganic iron(III) polymer (∼80%) can be produced in a specific range of B rates. These iron(III) polymers, having a size ranging from 3 to 7 nm, were stable without precipitation of ferric hydroxide microcolloids after aging for 2 weeks.
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U2 - 10.1016/j.jcis.2004.10.064
DO - 10.1016/j.jcis.2004.10.064
M3 - Article
C2 - 15780293
AN - SCOPUS:15244350856
VL - 284
SP - 542
EP - 547
JO - Journal of Colloid and Interface Science
JF - Journal of Colloid and Interface Science
SN - 0021-9797
IS - 2
ER -