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Hybrid biological, electron beam and zero-valent nano iron treatment of recalcitrant metalworking fluids.
- Source :
-
Water research [Water Res] 2016 Apr 15; Vol. 93, pp. 214-221. Date of Electronic Publication: 2016 Feb 16. - Publication Year :
- 2016
-
Abstract
- Hybrid approaches for the remediation and detoxification of toxic recalcitrant industrial wastewater were investigated. The focus was waste metalworking fluid, which was selected as a representative model of other waste streams that are toxic, recalcitrant and that require more sustainable routes of safe disposal. The hybrid approaches included biodegradation, electron beam irradiation and zero-valent nano iron advanced oxidation processes that were employed individually and in sequence employing a factorial design. To compare process performance operationally exhausted and pristine metalworking fluid were compared. Sequential hybrid electron beam irradiation, biological, nanoscale zero-valent iron and biological treatment lead to synergistic detoxification and degradation of both recalcitrant streams, as determined by complementary surrogates and lead to overall improved COD removal of 92.8 ± 1.4% up from 85.9 ± 3.4% for the pristine metalworking fluid. Electron beam pre-treatment enabled more effective biotreatment, achieving 69.5 ± 8% (p = 0.005) and 24.6 ± 4.8% (p = 0.044) COD reductions.<br /> (Copyright © 2016. Published by Elsevier Ltd.)
- Subjects :
- Bacteria genetics
Bacteria metabolism
Biodegradation, Environmental
Bioreactors microbiology
Industrial Waste
Microscopy, Electron, Scanning
Nanostructures chemistry
Nanostructures ultrastructure
Oxidation-Reduction
Reproducibility of Results
Time Factors
Water Purification methods
Electrons
Iron chemistry
Metallurgy
Waste Disposal, Fluid methods
Subjects
Details
- Language :
- English
- ISSN :
- 1879-2448
- Volume :
- 93
- Database :
- MEDLINE
- Journal :
- Water research
- Publication Type :
- Academic Journal
- Accession number :
- 26905800
- Full Text :
- https://doi.org/10.1016/j.watres.2016.02.028