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Title: Performance evaluation of duplex constructed wetlands for the treatment of diesel contaminated wastewater
Authors: Mustapha H.I.
Gupta P.K.
Yadav, Brijesh K.
van Bruggen J.J.A.
Lens P.N.L.
Published in: Chemosphere
Abstract: A duplex constructed wetland (duplex-CW) is a hybrid system that combines a vertical flow (VF) CW as a first stage with a horizontal flow filter (HFF) as a second stage for a more efficient wastewater treatment as compared to traditional constructed wetlands. This study evaluated the potential of the hybrid CW system to treat influent wastewater containing diesel range organic compounds varying from C7 – C40 using a series of 12-week practical and numerical experiments under controlled conditions in a greenhouse (pH was kept at 7.0 ± 0.2, temperature between 20 and 23° C and light intensity between 85 and 100-μmol photons m−2 sec−1 for 16 h d−1). The VF CWs were planted with Phragmites australis and were spiked with different concentrations of NH4+-N (10, 30 and 60 mg/L) and PO43--P (3, 6 and 12 mg/L) to analyse their effects on the degradation of the supplied petroleum hydrocarbons. The removal rate of the diesel range organics considering the different NH4+-N and PO43--P concentrations were simulated using Monod degradation kinetics. The simulated results compared well with the observed database. The results showed that the model can effectively be used to predict biochemical transformation and degradation of diesel range organic compounds along with nutrient amendment in duplex constructed wetlands. © 2018 Elsevier Ltd
Citation: Chemosphere (2018), 205(): 166-177
Issue Date: 2018
Publisher: Elsevier Ltd
Keywords: Duplex-CWs
Hybrid systems
Numerical experiments
Refinery diesel wastewater
Total petroleum hydrocarbons
ISSN: 456535
Author Scopus IDs: 56897033900
Author Affiliations: Mustapha, H.I., UNESCO-IHE, P.O. Box 3015, Delft, DA 2601, Netherlands, Federal University of Technology, Minna, Department of Agricultural and Bio-resources Engineering, P. M. B. 65, Gidan Kwano., Nigeria
Gupta, P.K., Indian Institute of Technology Roorkee, Department of Hydrology, Roorkee, Uttarakhand 247667, India
Yadav, B.K., Indian Institute of Technology Roorkee, Department of Hydrology, Roorkee, Uttarakhand 247667, India
van Bruggen, J.J.A., UNESCO-IHE, P.O. Box 3015, Delft, DA 2601, Netherlands
Lens, P.N.L., UNESCO-IHE, P.O. Box 3015, Delft, DA 2601, Netherlands
Funding Details: The authors acknowledge the Government of the Netherlands for their financial assistance via the NUFFIC program ( NFP-PhD CF7447/2011 ) as well as the UGC New Delhi for their financial support for senior research fellowship for the simulation studies of this research. We also thank the IHE laboratory staff for giving the opportunity to conduct this research in their greenhouse and their analytical support.
Corresponding Author: Mustapha, H.I.; UNESCO-IHE, P.O. Box 3015, Netherlands; email:
Appears in Collections:Journal Publications [HY]

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