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Chemosphere. 2017 Jan;166:203-211. doi: 10.1016/j.chemosphere.2016.09.093. Epub 2016 Sep 30.

Removal of copper, nickel and chromium mixtures from metal plating wastewater by adsorption with modified carbon foam.

Author information

1
Center for Water Resource Cycle Research, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul, 02792, Republic of Korea.
2
Department of Earth and Environmental Sciences, Korea University, Seoul, 02841, Republic of Korea.
3
Environmental Functional Materials & Biocolloids Laboratory, Seoul National University, Seoul, 08826, Republic of Korea.
4
Department of Civil Engineering, Sangmyung University, Cheonan, Chungnam, 31066, Republic of Korea.
5
Department of Earth and Environmental Sciences, Korea University, Seoul, 02841, Republic of Korea; Green School, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea.
6
Center for Water Resource Cycle Research, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul, 02792, Republic of Korea; Green School, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea. Electronic address: yisanghyup@kist.re.kr.
7
Center for Water Resource Cycle Research, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul, 02792, Republic of Korea; Department of Energy and Environmental Engineering, University of Science and Technology (UST), Daejeon, 34113, Republic of Korea. Electronic address: plead36@kist.re.kr.

Abstract

In this study, the characterizations and adsorption efficiencies for chromium, copper and nickel were evaluated using manufacture-grade Fe2O3-carbon foam. SEM, XRD, XRF and BET analyses were performed to determine the characteristics of the material. Various pore sizes (12-420 μm) and iron contents (3.62%) were found on the surface of the Fe2O3-carbon foam. Fe2O3-carbon foam was found to have excellent adsorption efficiency compared to carbon foam for mixed solutions of cationic and anionic heavy metals. The adsorption capacities for chromium, copper and nickel were 6.7, 3.8 and 6.4 mg/g, respectively, which were obtained using a dual exponential adsorption model. In experiments with varying dosages of the Fe2O3 powder, no notable differences were observed in the removal efficiency. In a fixed-bed column test, Fe2O3-carbon foam achieved adsorption capacities for chromium, copper and nickel of 33.0, 12.0 and 9.5 mg/g, respectively, after 104 h. Based on these results, Fe2O3-carbon foam was observed to be a promising material for treatment of plating wastewater.

KEYWORDS:

Adsorption; Fe(2)O(3)-carbon foam; Heavy metals; Metal plating wastewater

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