Simultaneous di-oxygenation and denitrification in an internal circulation baffled bioreactor

Ling Jiang; Yingxia Tang; Weihua Sun; Na Yi; Yongming Zhang; Hanchang Shi; Bruce Rittmann

doi:10.1007/s10532-017-9788-7

Simultaneous di-oxygenation and denitrification in an internal circulation baffled bioreactor

Ling Jiang, Yingxia Tang, Weihua Sun, Na Yi, Yongming Zhang, Hanchang Shi, Bruce Rittmann

Research output: Contribution to journal › Article

2 Scopus citations

Abstract

An internal circulation baffled bioreactor was employed to realize simultaneous di-oxygenation of phthalic acid (PA) and denitrification of nitrate, which require aerobic and anoxic conditions, respectively. Adding a small concentration of succinate as an exogenous electron donor stimulated PA di-oxygenation, which produced readily oxidizable downstream products whose oxidation also enhanced denitrification of nitrate; succinate addition also stimulated denitrification. Depending on the concentration of PA, addition of 0.17 mM succinate increased the PA removal rate by 25 and 42%, while the corresponding nitrate removal rate was increased by 73 and 51%. UV/H₂O₂ advanced oxidation of PA had the same effects as adding succinate, since succinate is generated by UV/H₂O₂; this acceleration effect was approximately equivalent to adding 0.17 mM succinate.

Original language	English (US)
Pages (from-to)	1-9
Number of pages	9
Journal	Biodegradation
DOIs	https://doi.org/10.1007/s10532-017-9788-7
State	Accepted/In press - Mar 4 2017

Keywords

Denitrification
Di-oxygenation
Nitrate
Phthalic acid
Succinate

ASJC Scopus subject areas

Microbiology
Bioengineering
Environmental Engineering
Environmental Chemistry
Pollution

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Jiang, L., Tang, Y., Sun, W., Yi, N., Zhang, Y., Shi, H., & Rittmann, B. (Accepted/In press). Simultaneous di-oxygenation and denitrification in an internal circulation baffled bioreactor. Biodegradation, 1-9. https://doi.org/10.1007/s10532-017-9788-7

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abstract = "An internal circulation baffled bioreactor was employed to realize simultaneous di-oxygenation of phthalic acid (PA) and denitrification of nitrate, which require aerobic and anoxic conditions, respectively. Adding a small concentration of succinate as an exogenous electron donor stimulated PA di-oxygenation, which produced readily oxidizable downstream products whose oxidation also enhanced denitrification of nitrate; succinate addition also stimulated denitrification. Depending on the concentration of PA, addition of 0.17 mM succinate increased the PA removal rate by 25 and 42%, while the corresponding nitrate removal rate was increased by 73 and 51%. UV/H2O2 advanced oxidation of PA had the same effects as adding succinate, since succinate is generated by UV/H2O2; this acceleration effect was approximately equivalent to adding 0.17 mM succinate.",

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AU - Jiang, Ling

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AU - Sun, Weihua

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AU - Zhang, Yongming

AU - Shi, Hanchang

AU - Rittmann, Bruce

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KW - Denitrification

KW - Di-oxygenation

KW - Nitrate

KW - Phthalic acid

KW - Succinate

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