- Title
- Remediation of water contaminated with diesel oil using a coupled process: biological degradation followed by heterogeneous Fenton-like oxidation
- Creator
- Chen, Yuan; Lin, Jiajiang; Chen, Zuliang
- Relation
- Chemosphere Vol. 183, Issue September, p. 286-293
- Publisher Link
- http://dx.doi.org/10.1016/j.chemosphere.2017.05.120
- Publisher
- Pergamon Press
- Resource Type
- journal article
- Date
- 2017
- Description
- The treatment of a synthetically prepared wastewater containing diesel oil has been investigated using combined treatment schemes based on the biological treatment followed by an advanced oxidation process. 78% of diesel oil was degraded by Acinetobacter venetianus in 96 h, while the removal efficiency of chemical oxygen demand (COD) in the aqueous phase was only 56.8%, indicating that degraded metabolites existed in solution. To solve this problem, a Fenton-like system consisting of nanoscale zero-valent iron (nZVI) and hydrogen peroxide was used for further oxidation of the metabolites after biodegradation. Results showed that the total COD removal increased from 56.8% to 89% under the optimal condition. In addition, effects of initial pH (2.0–9.0), ZVI dosage (0–2.0 g L-1), hydrogen peroxide (H₂O₂) dosage concentration (0–15 mmol L-1) and temperature (298–308 K) on the treatment efficiency of the combined process were studied. Scanning electron microscopy (SEM) demonstrated that changes to the surface of nZVI occurred. GC-MS revealed that the degraded metabolites were mineralized practically by nZVI/H₂O₂ system. The results points towards the potential of Fenton-like oxidation as a short post-treatment after a biological process for the treatment of organic pollutants in wastewater.
- Subject
- Acinetobacter venetianus; Fenton-like; diesel oil; recalcitrant compounds; advanced oxidation process; SDG 6; Sustainable Development Goals
- Identifier
- http://hdl.handle.net/1959.13/1387838
- Identifier
- uon:32675
- Identifier
- ISSN:0045-6535
- Language
- eng
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