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A re-circulating horizontal flow constructed wetland for the treatment of synthetic azo dye at high concentrations.
Environ Sci Pollut Res Int. 2019 May; 26(13):13489-13501.ES

Abstract

A re-circulating horizontal flow constructed wetland (RHFCW) system was developed in a greenhouse. This system was operated with Typha domingensis to study the phytoremediation capacity of this macrophyte species in different developing stages for synthetic textile wastewater with the pollutant type, the amaranth (AM) azo dye. Experiments were applied with a fixed flow rate Q = 10 L/h corresponding to a theoretical residence time of 3 h. The synthetic feeding to the RHFCW container was re-circulated back until the required water quality was achieved. The performance of this pilot-scale system was compared to an unplanted RHFCW. The effect of the initial dye concentration was studied using four dye concentrations (10, 15, 20, and 25 mg/L). The following parameters pH, color, COD, BOD5, NO3-, NO2-, and NH4+ were monitored during treatment. The maximum efficiencies obtained for discoloration, COD, NO3-, and NH4+ were 92 ± 0.14%, 56 ± 1.12%, 92 ± 0.34%, and 97 ± 0.17% respectively. Experiences demonstrate a decrease of removal efficiencies of studied parameters with the increase of dye concentrations, leading to an increase of the duration of treatment. Changes in activities of antioxidant enzymes (superoxide dismutase (SOD), guaiacol peroxidase (GPX), catalase (CAT), ascorbic peroxidase (APX), and glutathione reductase (GR)) and their relation to plant defense system against stress were studied. Enzymes were evaluated in leaves of T. domingensis during the remediation of the azo dye (amaranth). During treatment, an increase of enzymes activities was observed in accordance with the high removal efficiency.

Authors+Show Affiliations

Laboratory of Wastewater and Environment, Centre for Water Researches and Technologies CERTE, B.P. 273, 8020, Soliman, Tunisia.National Institute of Agronomy of Tunisia, University of Carthage, 43, Avenue Charles Nicolle, Cite Mahrajene, 1082, Tunis, Tunisia.Laboratory of extremophiles plants, Centre of Biotechnology of Borj Cédria (CBBC), 8020, Soliman, Tunisia.Laboratory of Wastewater and Environment, Centre for Water Researches and Technologies CERTE, B.P. 273, 8020, Soliman, Tunisia. latifa.bousselmi@certe.rnrt.tn.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30911962

Citation

Haddaji, Dalila, et al. "A Re-circulating Horizontal Flow Constructed Wetland for the Treatment of Synthetic Azo Dye at High Concentrations." Environmental Science and Pollution Research International, vol. 26, no. 13, 2019, pp. 13489-13501.
Haddaji D, Ghrabi-Gammar Z, Hamed KB, et al. A re-circulating horizontal flow constructed wetland for the treatment of synthetic azo dye at high concentrations. Environ Sci Pollut Res Int. 2019;26(13):13489-13501.
Haddaji, D., Ghrabi-Gammar, Z., Hamed, K. B., & Bousselmi, L. (2019). A re-circulating horizontal flow constructed wetland for the treatment of synthetic azo dye at high concentrations. Environmental Science and Pollution Research International, 26(13), 13489-13501. https://doi.org/10.1007/s11356-019-04704-2
Haddaji D, et al. A Re-circulating Horizontal Flow Constructed Wetland for the Treatment of Synthetic Azo Dye at High Concentrations. Environ Sci Pollut Res Int. 2019;26(13):13489-13501. PubMed PMID: 30911962.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A re-circulating horizontal flow constructed wetland for the treatment of synthetic azo dye at high concentrations. AU - Haddaji,Dalila, AU - Ghrabi-Gammar,Zeineb, AU - Hamed,Karim Ben, AU - Bousselmi,Latifa, Y1 - 2019/03/25/ PY - 2018/09/13/received PY - 2019/02/25/accepted PY - 2019/3/27/pubmed PY - 2019/6/22/medline PY - 2019/3/27/entrez KW - Antioxidant enzymes KW - Constructed wetland KW - Dye KW - Phytoremediation KW - Re-circulation KW - Typha domingensis SP - 13489 EP - 13501 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 26 IS - 13 N2 - A re-circulating horizontal flow constructed wetland (RHFCW) system was developed in a greenhouse. This system was operated with Typha domingensis to study the phytoremediation capacity of this macrophyte species in different developing stages for synthetic textile wastewater with the pollutant type, the amaranth (AM) azo dye. Experiments were applied with a fixed flow rate Q = 10 L/h corresponding to a theoretical residence time of 3 h. The synthetic feeding to the RHFCW container was re-circulated back until the required water quality was achieved. The performance of this pilot-scale system was compared to an unplanted RHFCW. The effect of the initial dye concentration was studied using four dye concentrations (10, 15, 20, and 25 mg/L). The following parameters pH, color, COD, BOD5, NO3-, NO2-, and NH4+ were monitored during treatment. The maximum efficiencies obtained for discoloration, COD, NO3-, and NH4+ were 92 ± 0.14%, 56 ± 1.12%, 92 ± 0.34%, and 97 ± 0.17% respectively. Experiences demonstrate a decrease of removal efficiencies of studied parameters with the increase of dye concentrations, leading to an increase of the duration of treatment. Changes in activities of antioxidant enzymes (superoxide dismutase (SOD), guaiacol peroxidase (GPX), catalase (CAT), ascorbic peroxidase (APX), and glutathione reductase (GR)) and their relation to plant defense system against stress were studied. Enzymes were evaluated in leaves of T. domingensis during the remediation of the azo dye (amaranth). During treatment, an increase of enzymes activities was observed in accordance with the high removal efficiency. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/30911962/A_re_circulating_horizontal_flow_constructed_wetland_for_the_treatment_of_synthetic_azo_dye_at_high_concentrations_ L2 - https://dx.doi.org/10.1007/s11356-019-04704-2 DB - PRIME DP - Unbound Medicine ER -