ORIGINAL RESEARCH
Continuous Fixed-Bed Column Study
and Adsorption Modeling: Removal of Arsenate
and Arsenite in Aqueous Solution by Organic
Modified Spent Grains
Chen Yunnen, Wu Ye, Liu Chen, Guo Lin, Nie Jinxia, Ren Rushan
Jiangxi Key Laboratory of Mining and Metallurgy Environmental Pollution Control,
Jiangxi University of Science and Technology,
Kejia Ave. 156, Ganzhou Jiangxi, 341000, P.R. China
Jiangxi University of Science and Technology,
Kejia Ave. 156, Ganzhou Jiangxi, 341000, P.R. China
Submission date: 2016-11-28
Final revision date: 2017-02-04
Acceptance date: 2017-02-08
Online publication date: 2017-06-13
Publication date: 2017-07-25
Pol. J. Environ. Stud. 2017;26(4):1847–1854
KEYWORDS
adsorptiondynamic modelingarsenic removalfixed-bed columnorganic modified spent grains (osgs)dynamicmodeling
TOPICS
ABSTRACT
The adsorption of arsenate (As(V)) and arsenite (As(III)) was conducted in a continuous fixed-bed
column by using organic modified spent grains (OSGs). The column performances were evaluated by
varying the influent flow rate (0.91, 1.36, and 2.72 ml/min) and arsenic ions initial concentration (1.0, 2.0, and
6.0 mg/l for As(V); 0.5, 1.0, and 3.0 mg/l for As(III)) in order to obtain experimental breakthrough curves.
The maximum adsorption capacity was at 6.0 mg/l for As(V) and 3.0 mg/l for As(III) influent concentration
and 1.36 ml/min flow rate. The Thomas model, Adams-Bohart model, and Yoon-Nelson kinetic models were
used to analyze column performance. The value of rate constant for Thomas and Adams-Bohart models
decreased with increase of influent concentration, but increased with increasing flow rate. The rate constant
for the Yoon-Nelson model decreased with increases in both initial influent arsenic ions concentration and
flow rate.
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