Enhanced treatment properties of iron oxide amended sands coupled with polyelectrolyte to humic acid
Document Type
Article
Publication Date
2-1-2018
Abstract
To improve the removal efficiency of micropollutant humic acid at low temperature, microflocculation filtration experiments were conducted with homemade iron oxide amended sands (IOAS), cationic polyelectrolyte (CPE) and polyaluminium chloride (PACl). Fractal properties of flocs structures and IOAS surface and their effects on the removal efficiency of humic acid were investigated. Results showed that IOAS had a porous surface with fractal dimensions (D) (D = 1.744) and a strong adsorption capacity for humic acid. The flocs produced by PACl were small in size, loosely packed with a higher D, and therefore settled slowly. By contrast, the formed flocs by adding CPE with only 1~5% of PACl had strong and open structures with a high effective density, rapid settling velocity and a lower D. Compared with PACl flocs, the larger size CPE flocs and PACl+CPE flocs deposited and packed up on IOAS, creating smaller pores and resulting in a lower D and higher filtration capacity.
Identifier
85041456159 (Scopus)
Publication Title
Water Environment Research
External Full Text Location
https://doi.org/10.2175/106143017x14902968254395
e-ISSN
15547531
ISSN
10614303
PubMed ID
28337963
First Page
136
Last Page
143
Issue
2
Volume
90
Grant
2016KTSCX035
Fund Ref
National Natural Science Foundation of China
Recommended Citation
Li, Dongmei; Wu, Cuiru; Wang, Yizhi; Jiang, Shuxian; Li, Shaoxiu; Liang, Jinling; and Zhang, Wen, "Enhanced treatment properties of iron oxide amended sands coupled with polyelectrolyte to humic acid" (2018). Faculty Publications. 8874.
https://digitalcommons.njit.edu/fac_pubs/8874
