Adsorption of arsenic(V) by activated carbon prepared from oat hulls.
The efficiency of self-manufactured activated carbon (AC) produced from oat hulls in adsorbing arsenic(V) was tested in a batch reactor. The results indicated that the adsorptive capacity of AC was affected by initial pH value, with adsorption capacity decreasing from 3.09 to 1.57 mg As g(-1) AC when the initial pH values increased from 5 to 8. A modified linear driving force model conjugated with a Langmuir isotherm was created to describe the study's kinetics. The test results show that rapid adsorption and slow adsorption exist simultaneously when AC is used to remove arsenic(V).
Chuang
C L
CL
Center for Sustainable Environmental Technologies, Iowa State University, Ames, IA 50011, USA.
Fan
M
M
Xu
M
M
Brown
R C
RC
Sung
S
S
Saha
B
B
Huang
C P
CP
D000327:Adsorption; D001151:Arsenic / Q000737:chemistry / Q000302:isolation & purification*; D018554:Avena; D002244:Carbon / Q000737:chemistry*; D008956:Models, Chemical; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*
D014874:Water Pollutants, Chemical; D002244:Carbon; D001151:Arsenic