Protozooplankton combined with magnetic-EDTA@chitosan nanocomposite as a novel system for fish farms wastewater remediation | ||||
| Egyptian Journal of Aquatic Biology and Fisheries | ||||
| Article 54, Volume 25, Issue 5, September and October 2021, Page 919-932 PDF (1.4 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejabf.2021.207878 | ||||
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| Author | ||||
| Amr B. Mostafa et al. | ||||
| Abstract | ||||
| In Egypt, most fish farms use water of agricultural drainage originated from agricultural activities that may contaminate farmed fish. This work was conducted to assess a novel wastewater treatment using combined protozooplankton with magnetic-EDTA@chitosan nanocomposite (ME@CS NC), to dwell with high concentrations of heavy metals and ammonia. A highly significant reduction (p < 0.01) was observed in the concentrations of Pb, Mn, Al and Cd on applying the treatment. The estimated decrease percentages were 99.9, 99.6, 98.8 and 93.3, respectively, whereas Ni showed a reduction of 90.3%. Simultaneously, ammonia in wastewater was significantly reduced (p < /em><0.01). Water environmental parameters of EC, pH, TDS, and NO2 were reduced by 2.4, 3.7, 7.4, and 43.3%, respectively, while PO4, and NH3 were reduced by 76.7 and 94.4%, respectively. Moreover, COD, nitrite, nitrate and phosphate physicochemical parameters were significantly reduced (p < /em><0.05), by 41.4, 54.9, 63.3, 64.4%, respectively. Hence, the combined treatment of ME@CS nano-composite and protozooplankton is recommended to be implemented in semi-intensive and modern intensive aquaculture systems to manage less water consumption and attain healthy fish for human consumption. | ||||
| Keywords | ||||
| Fish farms; Wastewater; Protozooplankton; Nanocomposite; Heavy metals; Magnetic Chitosan | ||||
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