Treatment of metal-contaminated water and vertical distribution of metal precipitates in an upflow anaerobic bioreactor

Z. X. Quan; H. J. La; S. T. Lee; Y. G. Cho; M. H. Hwang; L. S. Kim

doi:10.1080/09593330309385569

Treatment of metal-contaminated water and vertical distribution of metal precipitates in an upflow anaerobic bioreactor

Z. X. Quan, H. J. La, S. T. Lee, Y. G. Cho, M. H. Hwang, L. S. Kim

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

14 Citations (Scopus)

Abstract

A lab-scale upflow anaerobic bioreactor filled with granular sludge and cow manure was operated for 140 days to determine the mechanism of metal removal and the vertical distribution of metal precipitates. Heavy metal ions were removed in the order of Cu²⁺, Cd²⁺, Zn²⁺, Fe²⁺ and Mn²⁺ with respect to the height in the reactor. The solid phase analysis showed that the heavy metals were mostly precipitated in the form of metal sulfides by sulfate reduction. The contents of metal precipitates in the reactor were as follows: (i) Cd and Zn were highest in the bottom, (ii) Fe was highest at the low-middle layer, and (iii) Mn was increased with the height in the reactor. The vertical distribution of metal sulfides in the reactor was directly related to the solubility product (Ksp). Results obtained in this study suggest a feasibility of the application to separate precipitation of metal ions and recovery of valuable metals from metal-containing wastewater.

Original language	English
Pages (from-to)	369-376
Number of pages	8
Journal	Environmental Technology (United Kingdom)
Volume	24
Issue number	3
DOIs	https://doi.org/10.1080/09593330309385569
Publication status	Published - 2003 Mar 1
Externally published	Yes

Keywords

Metal removal order
Metal sulfide
Solubility product
Sulfate reduction

ASJC Scopus subject areas

Environmental Chemistry
Water Science and Technology
Waste Management and Disposal

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10.1080/09593330309385569

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title = "Treatment of metal-contaminated water and vertical distribution of metal precipitates in an upflow anaerobic bioreactor",

abstract = "A lab-scale upflow anaerobic bioreactor filled with granular sludge and cow manure was operated for 140 days to determine the mechanism of metal removal and the vertical distribution of metal precipitates. Heavy metal ions were removed in the order of Cu2+, Cd2+, Zn2+, Fe2+ and Mn2+ with respect to the height in the reactor. The solid phase analysis showed that the heavy metals were mostly precipitated in the form of metal sulfides by sulfate reduction. The contents of metal precipitates in the reactor were as follows: (i) Cd and Zn were highest in the bottom, (ii) Fe was highest at the low-middle layer, and (iii) Mn was increased with the height in the reactor. The vertical distribution of metal sulfides in the reactor was directly related to the solubility product (Ksp). Results obtained in this study suggest a feasibility of the application to separate precipitation of metal ions and recovery of valuable metals from metal-containing wastewater.",

keywords = "Metal removal order, Metal sulfide, Solubility product, Sulfate reduction",

author = "Quan, {Z. X.} and La, {H. J.} and Lee, {S. T.} and Cho, {Y. G.} and Hwang, {M. H.} and Kim, {L. S.}",

note = "Funding Information: This work was supported by a grant for industrial waste recycling from the Ministry of Science and Technology in Korea and a grant (4-1-1)from SustainableWaterResources Research Center (SWRRC) of 21stcentury frontier R7D program through the Water Reuse Technology Center (WRTC) at Kwangju Institute of Science and Technology (K-JIST).",

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doi = "10.1080/09593330309385569",

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AU - Quan, Z. X.

AU - La, H. J.

AU - Lee, S. T.

AU - Cho, Y. G.

AU - Hwang, M. H.

AU - Kim, L. S.

N1 - Funding Information: This work was supported by a grant for industrial waste recycling from the Ministry of Science and Technology in Korea and a grant (4-1-1)from SustainableWaterResources Research Center (SWRRC) of 21stcentury frontier R7D program through the Water Reuse Technology Center (WRTC) at Kwangju Institute of Science and Technology (K-JIST).

PY - 2003/3/1

Y1 - 2003/3/1

N2 - A lab-scale upflow anaerobic bioreactor filled with granular sludge and cow manure was operated for 140 days to determine the mechanism of metal removal and the vertical distribution of metal precipitates. Heavy metal ions were removed in the order of Cu2+, Cd2+, Zn2+, Fe2+ and Mn2+ with respect to the height in the reactor. The solid phase analysis showed that the heavy metals were mostly precipitated in the form of metal sulfides by sulfate reduction. The contents of metal precipitates in the reactor were as follows: (i) Cd and Zn were highest in the bottom, (ii) Fe was highest at the low-middle layer, and (iii) Mn was increased with the height in the reactor. The vertical distribution of metal sulfides in the reactor was directly related to the solubility product (Ksp). Results obtained in this study suggest a feasibility of the application to separate precipitation of metal ions and recovery of valuable metals from metal-containing wastewater.

AB - A lab-scale upflow anaerobic bioreactor filled with granular sludge and cow manure was operated for 140 days to determine the mechanism of metal removal and the vertical distribution of metal precipitates. Heavy metal ions were removed in the order of Cu2+, Cd2+, Zn2+, Fe2+ and Mn2+ with respect to the height in the reactor. The solid phase analysis showed that the heavy metals were mostly precipitated in the form of metal sulfides by sulfate reduction. The contents of metal precipitates in the reactor were as follows: (i) Cd and Zn were highest in the bottom, (ii) Fe was highest at the low-middle layer, and (iii) Mn was increased with the height in the reactor. The vertical distribution of metal sulfides in the reactor was directly related to the solubility product (Ksp). Results obtained in this study suggest a feasibility of the application to separate precipitation of metal ions and recovery of valuable metals from metal-containing wastewater.

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KW - Solubility product

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Treatment of metal-contaminated water and vertical distribution of metal precipitates in an upflow anaerobic bioreactor

Abstract

Keywords

ASJC Scopus subject areas

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