Liu, C, Chen, X orcid.org/0000-0002-2053-2448, Banwart, SA et al. (3 more authors) (2021) A novel permeable reactive biobarrier for ortho-nitrochlorobenzene pollution control in groundwater: experimental evaluation and kinetic modelling. Journal of Hazardous Materials, 420. 126563. ISSN 0304-3894
Abstract
Three novel permeable reactive barrier (PRB) materials composed of Cu/Fe with 0.24% and 0.43% (w/w) Cu loadings or Fe0 supported on wheat straw were prepared (termed materials E, F and G). These materials exhibited excellent pollutant removal efficiency and physical stability as well as the ongoing release of organic carbon and iron. Column experiments showed that materials E, F and G removed almost 100% of ortho-nitrochlorobenzene (o-NCB) from water. The rates of iron release from the E and F columns exceeded those from column G but this had no significant effect on o-NCB removal. The bacteria that degraded o-NCB in E and F were also different from those in G. The levels of these bacteria in the columns were higher than those in the initial materials, with the highest level in column E. The simultaneous reduction and microbial degradation of o-NCB was observed, with the latter being dominant. A kinetic model was established to simulate the dynamic interactions and accurately predicted the experimental results. Organic carbon from the wheat straw supported the majority of the biomass in each column, which was essential for the bioremediation process. The findings of this study suggest an economically viable approach to mitigating o-NCB pollution.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2021 Elsevier B.V. All rights reserved. This is an author produced version of an article published in Journal of Hazardous Materials. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | o-NCB; Reduction; Biodegradation; PHREEQC; Kinetics |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Civil Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 07 Jul 2021 13:50 |
Last Modified: | 18 Oct 2024 14:44 |
Status: | Published |
Publisher: | Elsevier BV |
Identification Number: | 10.1016/j.jhazmat.2021.126563 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:175959 |