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- W2415703769 abstract "Effects of nano‐copper(II) oxide (nano‐CuO) and nano‐magnesium oxide (nano‐MgO) particles on activated sludge endogenous respiration (aerobic digestion), biochemical oxygen demand (BOD) biodegradation, and nitrification were investigated through respiration rate measurement. For comparison, the effects of Cu(II) and Mg(II) ions on activated sludge were also studied. Results indicated that soluble Cu(II) has half maximum inhibitory concentration (IC 50 ) values of 19, 5.5, 53, and 117 mg Cu/L for endogenous respiration, BOD biodegradation, ammonium oxidation, and nitrite oxidation, respectively. However, nano‐CuO only inhibited BOD biodegradation at 240 mg Cu/L or more, and its associated toxicity was primarily caused by soluble Cu(II). In contrast, soluble Mg(II) was not toxic to activated sludge in the experimental concentration range, but nano‐MgO inhibited BOD biodegradation and nitrification with IC 50 values of 70 and 143 mg Mg/L, respectively. Further study indicated that the toxicity of nano‐MgO resulted primarily from increased pH following MgO hydrolysis." @default.
- W2415703769 created "2016-06-24" @default.
- W2415703769 creator A5034579434 @default.
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- W2415703769 date "2012-07-01" @default.
- W2415703769 modified "2023-10-16" @default.
- W2415703769 title "Effects of Nano‐Copper(II) Oxide and Nano‐Magnesium Oxide Particles on Activated Sludge" @default.
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- W2415703769 doi "https://doi.org/10.2175/106143012x13373575830593" @default.
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