Effects of Cationic Polyacrylamide and Cationic Starch on Aquatic Life

Effects of Cationic Polyacrylamide and Cationic Starch on Aquatic Life

AbstractGeotextile tubes with polyacrylamide flocculants are widely used in dewatering applications. Due to variations in solid concentrations during dredging, excess flocculant is sometimes released into the environment, where it might have toxic effects. This study determined optimum doses for a c...

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Veröffentlicht in:Journal of hazardous, toxic and radioactive waste toxic and radioactive waste, 2019-10, Vol.23 (4)
Hauptverfasser: Duggan, Katie L, Morris, Martina, Bhatia, Shobha K, Khachan, Mahmoud M, Lewis, Katharine E
Format: Artikel
Sprache:eng
Schlagworte:
Aquatic organisms
Cationic polymerization
Chorion
Dewatering
Dredging
Embryos
Flocculants
Geotechnical fabrics
Hazardous materials
Overdose
Polymers
Slurries
Starch
Statistical analysis
Statistical methods
Technical Papers
Toxicity
Tubes
Zebrafish
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Zusammenfassung:AbstractGeotextile tubes with polyacrylamide flocculants are widely used in dewatering applications. Due to variations in solid concentrations during dredging, excess flocculant is sometimes released into the environment, where it might have toxic effects. This study determined optimum doses for a cationic polyacrylamide (CPAM) and a natural-based polymer alternative, cationic starch (C. Starch). Slurry samples were treated with optimum and 50% overdoses of each compound, and residual polymer concentrations were measured. Overdosed C. Starch resulted in low residuals (
ISSN:2153-5493
2153-5515
DOI:10.1061/(ASCE)HZ.2153-5515.0000467