Catalytic assistance of ultrasound for manganese removal by waste oyster shells

Mingcan Cui; Min Jang; Seungmin Na; Seban Lee; Jeehyeong Khim

doi:10.1016/j.jenvman.2012.10.033

Catalytic assistance of ultrasound for manganese removal by waste oyster shells

Mingcan Cui, Min Jang, Seungmin Na, Seban Lee, Jeehyeong Khim

School of Civil, Environmental and Architectural Engineering

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

The catalytic assistance of ultrasound (designated as US) for the removal of Mn(II) by oyster shells (designated as OS) was investigated with respect to major parameters such as pH, initial Mn(II) concentration, and US power density. The kinetic data of Mn(II) removal by the combination of oyster shells and ultrasound (OS/US) was fitted by the first-order kinetic model. Results show that the rate constant of the OS/US system was in the range 3.1-54.5 × 10^-2 min^-1, which is about 130 times higher than that of the homogeneous oxidation of Mn(II) by O₂, and was about two times higher than that of commercial surrogate materials (CaO and CaCO₃) associated with US under the same operational condition. The US power densities for the OS/US system and the log-scale of the first-order rate constants showed a linear positive correlation with a slope of 0.042. X-ray diffraction, and Fourier transform infrared analyses revealed that the dissolved Mn(II) was oxidized into Mn₂O₃ or MnO₂, as well as precipitated in the form of MnCO₃ by OS/US.

Original language	English
Pages (from-to)	235-240
Number of pages	6
Journal	Journal of Environmental Management
Volume	115
DOIs	https://doi.org/10.1016/j.jenvman.2012.10.033
Publication status	Published - 2013 Jan

Keywords

Kinetics
Manganese
Mechanism
Ultrasound
Waste oyster shell

ASJC Scopus subject areas

Environmental Engineering
Waste Management and Disposal
Management, Monitoring, Policy and Law

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10.1016/j.jenvman.2012.10.033

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title = "Catalytic assistance of ultrasound for manganese removal by waste oyster shells",

abstract = "The catalytic assistance of ultrasound (designated as US) for the removal of Mn(II) by oyster shells (designated as OS) was investigated with respect to major parameters such as pH, initial Mn(II) concentration, and US power density. The kinetic data of Mn(II) removal by the combination of oyster shells and ultrasound (OS/US) was fitted by the first-order kinetic model. Results show that the rate constant of the OS/US system was in the range 3.1-54.5 × 10-2 min-1, which is about 130 times higher than that of the homogeneous oxidation of Mn(II) by O2, and was about two times higher than that of commercial surrogate materials (CaO and CaCO3) associated with US under the same operational condition. The US power densities for the OS/US system and the log-scale of the first-order rate constants showed a linear positive correlation with a slope of 0.042. X-ray diffraction, and Fourier transform infrared analyses revealed that the dissolved Mn(II) was oxidized into Mn2O3 or MnO2, as well as precipitated in the form of MnCO3 by OS/US.",

keywords = "Kinetics, Manganese, Mechanism, Ultrasound, Waste oyster shell",

author = "Mingcan Cui and Min Jang and Seungmin Na and Seban Lee and Jeehyeong Khim",

note = "Funding Information: This work was supported by the Basic Science Research Program through a National Research Foundation of Korea (NRF) grant funded by the Ministry of Education, Science and Technology ( KRF-2009-0092799 ) and supported by a Korea University Grant. ",

year = "2013",

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doi = "10.1016/j.jenvman.2012.10.033",

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AU - Cui, Mingcan

AU - Jang, Min

AU - Na, Seungmin

AU - Lee, Seban

AU - Khim, Jeehyeong

N1 - Funding Information: This work was supported by the Basic Science Research Program through a National Research Foundation of Korea (NRF) grant funded by the Ministry of Education, Science and Technology ( KRF-2009-0092799 ) and supported by a Korea University Grant.

PY - 2013/1

Y1 - 2013/1

N2 - The catalytic assistance of ultrasound (designated as US) for the removal of Mn(II) by oyster shells (designated as OS) was investigated with respect to major parameters such as pH, initial Mn(II) concentration, and US power density. The kinetic data of Mn(II) removal by the combination of oyster shells and ultrasound (OS/US) was fitted by the first-order kinetic model. Results show that the rate constant of the OS/US system was in the range 3.1-54.5 × 10-2 min-1, which is about 130 times higher than that of the homogeneous oxidation of Mn(II) by O2, and was about two times higher than that of commercial surrogate materials (CaO and CaCO3) associated with US under the same operational condition. The US power densities for the OS/US system and the log-scale of the first-order rate constants showed a linear positive correlation with a slope of 0.042. X-ray diffraction, and Fourier transform infrared analyses revealed that the dissolved Mn(II) was oxidized into Mn2O3 or MnO2, as well as precipitated in the form of MnCO3 by OS/US.

AB - The catalytic assistance of ultrasound (designated as US) for the removal of Mn(II) by oyster shells (designated as OS) was investigated with respect to major parameters such as pH, initial Mn(II) concentration, and US power density. The kinetic data of Mn(II) removal by the combination of oyster shells and ultrasound (OS/US) was fitted by the first-order kinetic model. Results show that the rate constant of the OS/US system was in the range 3.1-54.5 × 10-2 min-1, which is about 130 times higher than that of the homogeneous oxidation of Mn(II) by O2, and was about two times higher than that of commercial surrogate materials (CaO and CaCO3) associated with US under the same operational condition. The US power densities for the OS/US system and the log-scale of the first-order rate constants showed a linear positive correlation with a slope of 0.042. X-ray diffraction, and Fourier transform infrared analyses revealed that the dissolved Mn(II) was oxidized into Mn2O3 or MnO2, as well as precipitated in the form of MnCO3 by OS/US.

KW - Kinetics

KW - Manganese

KW - Mechanism

KW - Ultrasound

KW - Waste oyster shell

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ER -

Catalytic assistance of ultrasound for manganese removal by waste oyster shells

Abstract

Keywords

ASJC Scopus subject areas

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