Sorption Behavior of Hexabromocyclododecanes (HBCDs) on Weihe River Sediment.

ABSTRACT: The sorption of hexabromocyclododecanes (HBCDs) on sediment affects the fate and transport of HBCDs in rivers. The sorption of HBCDs on sediment from the Weihe River was investigated by performing batch equilibration experiments, and the effects of changing the pH ionic, strength, and humic acid concentration (HA) on sorption were evaluated. The obtained results indicated that fast rather than slow sorption was the dominant process. Nonlinear sorption isotherms were acquired, and the Freundlich (R2 0.94-0.98) and Langmuir (R2 0.95-0.99) models both described the sorption of HBCDs well. The adsorption capacity for α-HBCD, β-HBCD, and γ-HBCD were calculated using the Langmuir model, and were 443.56, 614.29 and 1146.37 mg/kg, respectively. Thermodynamic analysis shows that HBCDs sorption on s

SUBMITTER: Wang X 

PROVIDER: S-EPMC6981516 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature