Fluidized-bed denitrification of mining water tolerates high nickel concentrations

G. Zou; S. Papirio; E. D. van Hullebusch; J. A. Puhakka

doi:10.1016/j.biortech.2014.12.044

Fluidized-bed denitrification of mining water tolerates high nickel concentrations

G. Zou^*
, S. Papirio
, E. D. van Hullebusch
, J. A. Puhakka

^*Corresponding author for this work

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

45 Citations (Scopus)

Abstract

This study revealed that fluidized-bed denitrifying cultures tolerated soluble Ni concentrations up to 500mg/L at 7-8 and 22°C. From 10 to 40mg/L of feed Ni, denitrification resulted in complete nitrate and nitrite removal. The concomitant reduction of 30mg/L of sulfate produced 10mg/L of sulfide that precipitated nickel, resulting in soluble effluent Ni below 22mg/L. At this stage, Dechloromonas species were the dominant denitrifying bacteria. From 60 to 500mg/L of feed Ni, nickel remained in solution due to the inhibition of sulfate reduction. At soluble 60mg/L of Ni, denitrification was partially inhibited prior to recover after 34days of enrichment by other Ni-tolerant species (including Delftia, Zoogloea and Azospira) that supported Dechloromonas. Subsequently, the FBR cultures completely removed nitrate even at 500mg/L of Ni. Visual Minteq speciation model predicted the formation of NiS, NiCO₃ and Ni₃(PO₄)₂, whilst only Ni₃(PO₄)₂ was detected by XRD.

Original language	English
Pages (from-to)	284-290
Number of pages	7
Journal	Bioresource Technology
Volume	179
DOIs	https://doi.org/10.1016/j.biortech.2014.12.044
Publication status	Published - 1 Mar 2015
Publication type	A1 Journal article-refereed

Keywords

Denitrification
Denitrifying communities
Fluidized-bed reactor
Nickel
X-ray diffraction

Publication forum classification

Publication forum level 2

ASJC Scopus subject areas

Bioengineering
Environmental Engineering
Waste Management and Disposal

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10.1016/j.biortech.2014.12.044

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title = "Fluidized-bed denitrification of mining water tolerates high nickel concentrations",

abstract = "This study revealed that fluidized-bed denitrifying cultures tolerated soluble Ni concentrations up to 500mg/L at 7-8 and 22°C. From 10 to 40mg/L of feed Ni, denitrification resulted in complete nitrate and nitrite removal. The concomitant reduction of 30mg/L of sulfate produced 10mg/L of sulfide that precipitated nickel, resulting in soluble effluent Ni below 22mg/L. At this stage, Dechloromonas species were the dominant denitrifying bacteria. From 60 to 500mg/L of feed Ni, nickel remained in solution due to the inhibition of sulfate reduction. At soluble 60mg/L of Ni, denitrification was partially inhibited prior to recover after 34days of enrichment by other Ni-tolerant species (including Delftia, Zoogloea and Azospira) that supported Dechloromonas. Subsequently, the FBR cultures completely removed nitrate even at 500mg/L of Ni. Visual Minteq speciation model predicted the formation of NiS, NiCO3 and Ni3(PO4)2, whilst only Ni3(PO4)2 was detected by XRD.",

keywords = "Denitrification, Denitrifying communities, Fluidized-bed reactor, Nickel, X-ray diffraction",

author = "G. Zou and S. Papirio and \{van Hullebusch\}, \{E. D.\} and Puhakka, \{J. A.\}",

year = "2015",

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doi = "10.1016/j.biortech.2014.12.044",

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T1 - Fluidized-bed denitrification of mining water tolerates high nickel concentrations

AU - Zou, G.

AU - Papirio, S.

AU - van Hullebusch, E. D.

AU - Puhakka, J. A.

PY - 2015/3/1

Y1 - 2015/3/1

N2 - This study revealed that fluidized-bed denitrifying cultures tolerated soluble Ni concentrations up to 500mg/L at 7-8 and 22°C. From 10 to 40mg/L of feed Ni, denitrification resulted in complete nitrate and nitrite removal. The concomitant reduction of 30mg/L of sulfate produced 10mg/L of sulfide that precipitated nickel, resulting in soluble effluent Ni below 22mg/L. At this stage, Dechloromonas species were the dominant denitrifying bacteria. From 60 to 500mg/L of feed Ni, nickel remained in solution due to the inhibition of sulfate reduction. At soluble 60mg/L of Ni, denitrification was partially inhibited prior to recover after 34days of enrichment by other Ni-tolerant species (including Delftia, Zoogloea and Azospira) that supported Dechloromonas. Subsequently, the FBR cultures completely removed nitrate even at 500mg/L of Ni. Visual Minteq speciation model predicted the formation of NiS, NiCO3 and Ni3(PO4)2, whilst only Ni3(PO4)2 was detected by XRD.

AB - This study revealed that fluidized-bed denitrifying cultures tolerated soluble Ni concentrations up to 500mg/L at 7-8 and 22°C. From 10 to 40mg/L of feed Ni, denitrification resulted in complete nitrate and nitrite removal. The concomitant reduction of 30mg/L of sulfate produced 10mg/L of sulfide that precipitated nickel, resulting in soluble effluent Ni below 22mg/L. At this stage, Dechloromonas species were the dominant denitrifying bacteria. From 60 to 500mg/L of feed Ni, nickel remained in solution due to the inhibition of sulfate reduction. At soluble 60mg/L of Ni, denitrification was partially inhibited prior to recover after 34days of enrichment by other Ni-tolerant species (including Delftia, Zoogloea and Azospira) that supported Dechloromonas. Subsequently, the FBR cultures completely removed nitrate even at 500mg/L of Ni. Visual Minteq speciation model predicted the formation of NiS, NiCO3 and Ni3(PO4)2, whilst only Ni3(PO4)2 was detected by XRD.

KW - Denitrification

KW - Denitrifying communities

KW - Fluidized-bed reactor

KW - Nickel

KW - X-ray diffraction

UR - https://www.scopus.com/pages/publications/84919934975

U2 - 10.1016/j.biortech.2014.12.044

DO - 10.1016/j.biortech.2014.12.044

M3 - Article

AN - SCOPUS:84919934975

SN - 0960-8524

VL - 179

SP - 284

EP - 290

JO - Bioresource Technology

JF - Bioresource Technology

ER -

Fluidized-bed denitrification of mining water tolerates high nickel concentrations

Abstract

Keywords

Publication forum classification

ASJC Scopus subject areas

Access to Document

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