Carbamazepine (CBZ), nonbiodegradable pharmaceutical residue, has become an emerging pollutant in several aquatic environments. The effectiveness of the mixture of soil and fly ash (FA) in adsorbing CBZ from aqueous solution has been studied as well as agitation time, FA content, initial CBZ concentration and desorption as a function of FA content. The adsorption kinetics fits a hyperbolic or pseudo-second-order model. The maximum adsorbed amounts for natural soil and a mixture of soil/FA ranged from 77 to 158 mg kg−1. Rate constants were considered relatively low (4.15–15.59 × 10−4 kg mg−1 min). The logarithmic form of the Freundlich equation gave a linearity and the Kf constants increased with the increase of FA content in adsorbent mixtures and with the affinity between the adsorbent surface and adsorbed solute. The mean removed amounts of CBZ by adsorption batch experiments in a soil mixture with 30% FA content were up to 92.8% for coal FA and 33% in natural soil. This work proved that the mixture of the coal FA and soil can be used as an efficient adsorbent material for removal of CBZ from water.
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Research Article|
March 01 2013
Removal of carbamazepine from aqueous solution by adsorption on fly ash-amended soil
Maria K. Swarcewicz;
1Institute of Organic Chemical Technology, Department of Organic Synthesis and Drug Technology, West Pomeranian University of Technology, Aleja Piastów 42, 71-065 Szczecin, Poland
E-mail: mswar@zut.edu.pl
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Justyna Sobczak;
Justyna Sobczak
1Institute of Organic Chemical Technology, Department of Organic Synthesis and Drug Technology, West Pomeranian University of Technology, Aleja Piastów 42, 71-065 Szczecin, Poland
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Waldemar Paździoch
Waldemar Paździoch
1Institute of Organic Chemical Technology, Department of Organic Synthesis and Drug Technology, West Pomeranian University of Technology, Aleja Piastów 42, 71-065 Szczecin, Poland
2Institute of Organic Chemical Technology, Department of Organic Chemistry Technology, West Pomeranian University of Technology, Pulaskiego 10, 70-322 Szczecin, Poland
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Water Sci Technol (2013) 67 (6): 1396–1402.
Article history
Received:
May 16 2012
Accepted:
October 15 2012
Citation
Maria K. Swarcewicz, Justyna Sobczak, Waldemar Paździoch; Removal of carbamazepine from aqueous solution by adsorption on fly ash-amended soil. Water Sci Technol 1 March 2013; 67 (6): 1396–1402. doi: https://doi.org/10.2166/wst.2013.662
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