US EPA

3973070 

Journal Article 

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

Jiang, L; Tang, Y; Sun, W; Yi, N; Zhang, Y; Shi, H; Rittmann, BE 

2017 

Yes 

Biodegradation
ISSN: 0923-9820
EISSN: 1572-9729 

SPRINGER 

NEW YORK 

28 

2-3 

195-203 

English 

28260134 

10.1007/s10532-017-9788-7 

WOS:000400932900007 

https://www.proquest.com/scholarly-journals/simultaneous-di-oxygenation-denitrification/docview/1899611175/se-2?accountid=171501
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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. 

Environmental Studies; Phthalic acid; Nitrate; Di-oxygenation; Denitrification; Succinate; Nitrates; Oxidation; Acids; Membrane reactors; Nitrate removal; Bioreactors; Anoxia; Circulation; Oxygenation; Anoxic conditions; Nutrient removal; Water pollution treatment; Ultraviolet radiation; Removal; Hydrogen peroxide