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According to the reaction of Mannich and coordination, a new kind of modified gel with ligand exchange function has been prepared by using polyacrylamide gel (PAMHG), formaldehyde triethylenetetramine (TETA) and Al3+. The properties of obtained product for the removal of fluorine from wastewater were reported. Due to the introduction of chelated functional group (TETA) grafted on framework of the...
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...
This study developed a rut prediction model for bituminous pavement based on long-term rut test. During the development of the rut prediction model, the long-term rut tests curves were obtained by testing asphalt samples with their performance in extension test time. Then, the numerical analysis of the curves had been done by using the Microsoft-Excel. The numerical analysis results indicated that...
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