Lead and copper removal from aqueous solutions using carbon foam derived from phenol resin

Title
Lead and copper removal from aqueous solutions using carbon foam derived from phenol resin
Authors
이창구전준우황민진안규홍박찬혁최재우이상협
Keywords
Carbon foam; Lead removal; Copper removal; Batch experiments; Surface precipitation
Issue Date
2015-07
Publisher
Chemosphere
Citation
VOL 130, 59-65
Abstract
Phenolic resin-based carbon foam was prepared as an adsorbent for removing heavy metals from aqueous solutions. The surface of the produced carbon foam had a well-developed open cell structure and the specific surface area according to the BET model was 458.59 m2 g 1. Batch experiments showed that removal ratio increased in the order of copper (19.83%), zinc (34.35%), cadmium (59.82%), and lead (73.99%) in mixed solutions with the same initial concentration (50 mg L 1). The results indicated that the Sips isotherm model was the most suitable for describing the experimental data of lead and copper. The maximum adsorption capacity of lead and copper determined to Sips model were 491 mg g 1 and 247 mg g 1. The obtained pore diffusion coefficients for lead and copper were found to be 1.02 10 6 and 2.42 10 7 m2 s 1, respectively. Post-sorption characteristics indicated that surface precipitation was the primary mechanism of lead and copper removal by the carbon foam, while the functional groups on the surface of the foam did not affect metal adsorption.
URI
http://pubs.kist.re.kr/handle/201004/50397
ISSN
00456535
Appears in Collections:
KIST Publication > Article
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