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Egyptian Journal of Botany
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Volume Volume 65 (2025)
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Abo-Shanab, W., Elsilk, S., Hemdan, H., Shalaby, M. (2025). Bacterial Bioremediation: A sustainable Approach to Wastewater Treatment and Promoting the Growth of Vicia faba (L.). Egyptian Journal of Botany, 65(3), 321-339. doi: 10.21608/ejbo.2025.349398.3142
Walaa A. Abo-Shanab; Sobhy E. Elsilk; Hani E. Hemdan; Mona M. Shalaby. "Bacterial Bioremediation: A sustainable Approach to Wastewater Treatment and Promoting the Growth of Vicia faba (L.)". Egyptian Journal of Botany, 65, 3, 2025, 321-339. doi: 10.21608/ejbo.2025.349398.3142
Abo-Shanab, W., Elsilk, S., Hemdan, H., Shalaby, M. (2025). 'Bacterial Bioremediation: A sustainable Approach to Wastewater Treatment and Promoting the Growth of Vicia faba (L.)', Egyptian Journal of Botany, 65(3), pp. 321-339. doi: 10.21608/ejbo.2025.349398.3142
Abo-Shanab, W., Elsilk, S., Hemdan, H., Shalaby, M. Bacterial Bioremediation: A sustainable Approach to Wastewater Treatment and Promoting the Growth of Vicia faba (L.). Egyptian Journal of Botany, 2025; 65(3): 321-339. doi: 10.21608/ejbo.2025.349398.3142

Bacterial Bioremediation: A sustainable Approach to Wastewater Treatment and Promoting the Growth of Vicia faba (L.)

Article 29, Volume 65, Issue 3, July 2025, Page 321-339  XML PDF (2.01 MB)
Document Type: Regular issue (Original Article)
DOI: 10.21608/ejbo.2025.349398.3142
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Authors
Walaa A. Abo-Shanab email orcid 1; Sobhy E. Elsilk2; Hani E. Hemdan3; Mona M. Shalaby4
1Botany and Microbiology, Faculty of Science, Tanta University, Tanta, Egypt
2Department of Botany and Microbiology, Faculty of Science, Tanta University, Tanta, Egypt
3Microbiology Department, Holding company for water and wastewater, Cairo, Egypt.
4Microbiology Department, Central Lab of El-Gharbia Co. for Water and Wastewater, Tanta, 31527, Egypt
Abstract
This study explores the use of bacterial isolates from wastewater treatment plants in El-Gharbia Governorate, Egypt, for improving wastewater quality and enhancing the growth of Vicia faba (L.) seedlings. Twenty-five bacterial isolates were collected from various wastewater treatment stages, including influent, sedimentation tanks, aeration tanks, and effluents. Five isolates (1, 3, 7, 15, and 21) were identified as highly effective in treating wastewater whereas, isolate no.1 achieved the most significant reductions in total suspended solids (TSS), biological oxygen demand (BOD), and chemical oxygen demand (COD). Further testing on Kafr El-Zayat wastewater showed that isolate No. 1 had ability to reduce TSS, BOD, and COD by 60%, 61%, and 68%, respectively, after two days. A mixture of the top five isolates (Tmix) improved these reductions to 65%, 68%, and 70%. Furthermore, the bacterial consortium effectively removed heavy metals such as Cd, Cr, Cu, Fe, Mn, and Pb, with removal efficiencies up to 97% for Mn and 96% for Fe. Molecular identification using 16S rRNA sequencing identified the isolates as Klebsiella sp., Proteus sp., Trabulsiella sp., Escherichia sp., and Kosakonia sp. Irrigation with treated wastewater, especially using Tmix, significantly improved the growth of Vicia faba (L.) seedlings, enhancing shoot height, fresh weight, photosynthetic efficiency, antioxidant enzyme activities, and key biochemical compounds like ascorbic acid, phenolics, and flavonoids. The treatments also increased nutrient uptake, particularly potassium and nitrogen. This study highlights bacterial bioremediation as a sustainable approach to wastewater treatment and agricultural application.
Keywords
Wastewater treatment; Heavy metal removal; Removal efficiency; Vicia faba (L.) Sustainable agriculture
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