Research Article

Arsenate Retention by Epipsammic Biofilms Developed on Streambed Sediments: Influence of Phosphate

Table 1

Parameters of theAs(V)sorption models.

SedimentBiofilmSedimentBiofilm
As(V)As(V) + PAs(V)As(V) + P

Linear
A
B
Freundlich
n 1.181.442.141.37
Langmuir
6.604.526.797.78
b
Dubinin-Radushkevich
3.231.543.6143.72
Temkin
2.48 2.94
Redlich-Peterson
B
Toth
3.91
t 5.892.682.433.62
Sips
1.154.28330.5266.13