Journal
BIODEGRADATION
Volume 28, Issue 2-3, Pages 195-203Publisher
SPRINGER
DOI: 10.1007/s10532-017-9788-7
Keywords
Phthalic acid; Nitrate; Di-oxygenation; Denitrification; Succinate
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Funding
- ability construction project of local Colleges and Universities in Shanghai [16070503000]
- Special Fund of State Key Joint Laboratory of Environment Simulation and Pollution Control [16K10ESPCT]
- Shanghai Gaofeng & Gaoyuan Project for University Academic Program Development
- United States National Science Foundation [0651794]
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [0651794] Funding Source: National Science Foundation
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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.
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