Ng, Kah Mun and Radin Mohamed, Radin Maya Saphira and Miswan, Muhammad Safwan and Al-Gheethi, Adel and Mohd Kassim, Amir Hashim and Mishima, Yuichiro (2020) Phytoremediation efficiencies of Spirodela polyrhiza and Brassica oleracea in removing nutrients from treated sewage effluent. Desalination and Water Treatment, 187. pp. 87-92. ISSN 1944-3994
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The study investigates the capacity of phytoremediation as a post-treatment step for the nutrientrich- treated sewage effluent from Saga City sewage treatment plant, Saga, Japan. Phytoremediation in the context of this study is the removal of nutrients such as ammoniacal nitrogen, nitrate nitrogen and phosphorus from the nutrient-rich-treated sewage effluent by plants. In this study, Spirodela polyrhiza (S. polyrhiza) and Brassica oleracea (B. oleracea) were used to phytoremediate the treated sewage effluent collected from the Saga City Sewage Treatment Plant under laboratory scale. Plants were grown in polypropylene planter box supplied with 8,000 mL treated sewage effluent under indoor environment and full water retention throughout the experimental studies. The removal efficiency and daily absorption of nutrients by phytoremediation plants were determined. It was found that the most optimal removal efficiency and average daily nutrient removal rate by S. polyrhiza throughout the experiment were 92.42% ± 1.29% or 15.4 mg/L/d for ammoniacal nitrogen achieved in day 1, 78.69% ± 10.31% or 2.68 mg/L/d for nitrate-nitrogen achieved in day 4, and 93.45% ± 3.26% or 0.51 mg/L/d for phosphorus in day 3 of an experiment. On the other hand, the removal efficiency and average daily nutrient removal rate by B. oleracea throughout the experiment gave a total of 8 d where 76.07% ± 10.38% or 1.68 mg/L/d for ammoniacal nitrogen, 78.38% ± 0.40% or 1.19 mg/L/d for nitrate-nitrogen and 67.40% ± 10.91% or 0.10 mg/L/d for phosphorus. The overall findings demonstrated that phytoremediation by S. polyrhiza was far more effective in removing nutrients from the nutrient-rich-treated sewage effluent compared to B. oleracea. The significance of the study includes reducing the possibility of eutrophication outbreak caused by the disposal of treated sewage effluent, advocating less dependency on global demand for non-renewable phosphorus resources in the agriculture sector, and solving food demand due to the increasing world population.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Phytoremediation; Treated sewage; Effluent; Spirodela polyrhiza; Brassica oleracea |
| Subjects: | T Technology > TD Environmental technology. Sanitary engineering > TD511-780 Sewage collection and disposal systems. Sewerage |
| Divisions: | Faculty of Civil Engineering and Built Environment > Department of Civil Engineering : Water and Environmental Engineering |
| Depositing User: | Miss Afiqah Faiqah Mohd Hafiz |
| Date Deposited: | 30 Jan 2022 07:25 |
| Last Modified: | 30 Jan 2022 07:25 |
| URI: | http://eprints.uthm.edu.my/id/eprint/6365 |
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