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In this paper, according to the Mannich-Reaction, a kind of chelating flocculant grafted with triethylenetetramine was preparated from polyacrylamide (PAM), formaldehyde and triethylenetetramine. Using this flocculant to remove cadmium from waste water including Cd2+ was studied. Due to the chelate functional group grafted on long chain of the PAM, the flocculant is able to capture Cd2+ through the...
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