title: Lead and copper removal from aqueous solutions using carbon foam derived from phenol resin.
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 458.59m(2)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 (50mgL(-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 491mgg(-1) and 247mgg(-1). The obtained pore diffusion coefficients for lead and copper were found to be 1.02×10(-6) and 2.42×10(-7)m(2)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.
authors.affiliation: Center for Water Resource Cycle Research, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea.
authors.forename: Chang-Gu
authors.initials: CG
authors.lastname: Lee
authors.affiliation: Center for Water Resource Cycle Research, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea.
authors.forename: Jun-Woo
authors.initials: JW
authors.lastname: Jeon
authors.affiliation: Center for Water Resource Cycle Research, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea.
authors.forename: Min-Jin
authors.initials: MJ
authors.lastname: Hwang
authors.affiliation: Center for Water Resource Cycle Research, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea.
authors.forename: Kyu-Hong
authors.initials: KH
authors.lastname: Ahn
authors.affiliation: Center for Water Resource Cycle Research, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea.
authors.forename: Chanhyuk
authors.initials: C
authors.lastname: Park
authors.affiliation: Center for Water Resource Cycle Research, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea; Department of Energy and Environmental Engineering, University of Science and Technology (UST), Daejeon 305-350, Republic of Korea. Electronic address: plead36@kist.re.kr.
authors.forename: Jae-Woo
authors.initials: JW
authors.lastname: Choi
authors.affiliation: Center for Water Resource Cycle Research, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea; Green School, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 136-701, Republic of Korea. Electronic address: yisanghyup@kist.re.kr.
authors.forename: Sang-Hyup
authors.initials: SH
authors.lastname: Lee
mesh_terms: D000327:Adsorption; D002104:Cadmium / Q000032:analysis; D002244:Carbon / Q000737:chemistry*; D003300:Copper / Q000032:analysis* / Q000737:chemistry; D005557:Formaldehyde / Q000737:chemistry; D007854:Lead / Q000032:analysis* / Q000737:chemistry; D019216:Metals, Heavy; D008855:Microscopy, Electron, Scanning; D009584:Nitrogen / Q000737:chemistry*; D010636:Phenols / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry; D016062:Porosity; D013499:Surface Properties; D014874:Water Pollutants, Chemical / Q000032:analysis*; D015032:Zinc / Q000032:analysis
chemical_list: D019216:Metals, Heavy; D010636:Phenols; D011108:Polymers; D014874:Water Pollutants, Chemical; D002104:Cadmium; D005557:Formaldehyde; D007854:Lead; D002244:Carbon; D003300:Copper; C011529:phenol-formaldehyde resin; D015032:Zinc; D009584:Nitrogen
keywords: Batch experiments; Carbon foam; Copper removal; Lead removal; Surface precipitation