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Phytoremediation of domestic wastewaters in free water surface constructed wetlands using Azolla pinnata

Akinbile, Christopher O. and Ogunrinde, Temitope A. and Che Man, Hasfalina and Abdul Aziz, Hamidi (2016) Phytoremediation of domestic wastewaters in free water surface constructed wetlands using Azolla pinnata. International Journal of Phytoremediation, 18 (1). pp. 54-61. ISSN 1522-6514; ESSN: 1549-7879

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Official URL: http://www.tandfonline.com/doi/abs/10.1080/1522651...

Abstract

Two constructed wetlands, one with Azolla pinnata plant (CW1) and the other without (CW2) for treating domestic wastewaters were developed. Fifteen water parameters which include: Dissolved Oxygen (DO), Biochemical Oxygen Demand (BOD5), Chemical Oxygen Demand (COD), Total Suspended Solid (TSS), Total Phosphorus (TP), Total Nitrogen (TN), Ammoniacal Nitrogen (NH3N), Turbidity, pH, Electrical Conductivity (EC), Iron (Fe), Magnesium (Mg), Manganese (Mn), and heavy metals such as Lead (Pb) and Zinc (Zn) were analyzed using standard laboratory procedures. The experiments were conducted in two (dry and wet) seasons simultaneously. Results showed considerable reductions in all parameters and metals including Zn in CW1 compared with CW2 in the two seasons considered while Pb and Mn were not detected throughout the study. Zn concentration levels reduced significantly in both seasons just as removal efficiencies of 70.03% and 64.51% were recorded for CW1 while 35.17% and 33.45% were recorded for CW2 in both seasons. There were no significant differences in the removal efficiencies of Fe in both seasons as 99.55%, 59.09%, 88.89%, and 53.56% were recorded in CW1 and CW2 respectively. Azolla pinnata has proved effective in domestic wastewater phytoremediation studies.

Item Type:Article
Keyword:Azolla pinnata; Constructed wetlands; Phytoremediation; Removal efficiency; Wastewater
Faculty or Institute:Faculty of Engineering
Publisher:Taylor & Francis
DOI Number:10.1080/15226514.2015.1058330
Altmetrics:http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1080/15226514.2015.1058330
ID Code:29186
Deposited By: Nurul Ainie Mokhtar
Deposited On:20 Jun 2016 14:51
Last Modified:20 Jun 2016 14:51

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