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Effect of surfactant-coated iron oxide nanoparticles on the effluent water quality from a simulated sequencing batch reactor treating domestic wastewater |
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| Authors: | Hwang Sangchul Martinez Diana Perez Priscilla Rinaldi Carlos |
| Institution: | a Department of Civil Engineering, University of Puerto Rico, Mayaguez, PR 00681, Puerto Rico b Department of Biology, University of Puerto Rico, Mayaguez, PR 00681, Puerto Rico c Department of Chemical Engineering, University of Puerto Rico, Mayaguez, PR 00681, Puerto Rico |
| Abstract: | This study was conducted to evaluate the effect of commercially available engineered iron oxide nanoparticles coated with a surfactant (ENPFe-surf) on effluent water quality from a lab-scale sequencing batch reactor as a model secondary biological wastewater treatment. Results showed that ∼8.7% of ENPFe-surf applied were present in the effluent stream. The stable presence of ENPFe-surf was confirmed by analyzing the mean particle diameter and iron concentration in the effluent. Consequently, aqueous ENPFe-surf deteriorated the effluent water quality at a statistically significant level (p < 0.05) with respect to soluble chemical oxygen demand, turbidity, and apparent color. This implied that ENPFe-surf would be introduced into environmental receptors through the treated effluent and could potentially impact them. |
| Keywords: | Effluent quality Engineered nanoparticles Sequencing batch reactor Wastewater |
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