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Efficiency of Five Selected Aquatic Plants in Phytoremediation of Aquaculture Wastewater

1
Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia
2
Centre for Tropical Climate Change System, Institute of Climate Change, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(8), 2712; https://doi.org/10.3390/app10082712
Received: 29 February 2020 / Revised: 18 March 2020 / Accepted: 19 March 2020 / Published: 14 April 2020
The lack of clean water sources, due to the presence of pollutants in water, is a major issue in many countries, including Malaysia. To overcome this problem, various methods have been introduced, including phytoremediation treatment. Therefore, this phytoremediation study examined the ability of five aquatic plants—Centella asiatica, Ipomoea aquatica, Salvinia molesta, Eichhornia crassipes, and Pistia stratiotes—to remove three pollutants—total suspended solids (TSS), ammoniacal nitrogen (NH3-N), and phosphate—from aquaculture wastewater. Using wastewater samples, each containing 50 g of one of the plants, the pollutant levels were measured every two days for 14 days. The results showed a drastic decline in the concentration of pollutants, where C. asiatica was able to remove 98% of NH3-N, 90% of TSS, and 64% of phosphate, while I. aquatica showed the potential to eliminate up to 73% of TSS and NH3-N, and 50% of phosphate. E. crassipes drastically removed 98% of phosphate, 96% of TSS, and 74% of NH3-N, while P. stratiotes was able to eliminate 98% of TSS, 78% of NH3-N, and 89% of phosphate. S. molesta was efficient in removing 89.3% of TSS and 88.6% of phosphate, but only removed 63.9% of NH3-N. View Full-Text
Keywords: aquaculture; aquatic plants; phytoremediation; wastewater treatment aquaculture; aquatic plants; phytoremediation; wastewater treatment
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Mohd Nizam, N.U.; Mohd Hanafiah, M.; Mohd Noor, I.; Abd Karim, H.I. Efficiency of Five Selected Aquatic Plants in Phytoremediation of Aquaculture Wastewater. Appl. Sci. 2020, 10, 2712.

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