Gumoi, Veronica Minnie (2024) Efficacy assessment of photosynthetic bacteria to meet sustainable wastewater treatment in red hybrid tilapia (Oreochromis spp.) tank culture system. [Project Paper] (Submitted)
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Abstract
Waste produced from aquaculture ultimately known hampered the water quality and growth performance of species cultured. Therefore, the potential exploitation of photosynthetic bacteria (PSB) from aquaculture waste was investigated to treat the wastewater in the fish culture. Photosynthetic bacteria are a group of bacteria that can carry out photosynthesis, a process by which light energy is converted into chemical energy to fuel cellular activities. They metabolize organic substrates such as nitrate, ammonia, and sulfide rapidly. Photosynthetic bacteria play a crucial role in various ecosystems, contributing to the carbon and nitrogen cycles. Hence this study was aimed to assess the efficacy of photosynthetic bacteria in meeting the sustainable wastewater treatment needs of red hybrid tilapia tank culture systems. Prior to the experiment three replicate treatment tanks was setup (450 litre) and name as T1 (negative control), T2 (Commercially available PSB as positive control) and T3 (Cultured PSB) The PSB isolated form previous study was cultured in sunlight exposed sterile bottles for 14 days. Fifty individuals of Oreochromis spp. (10.69±1.06 cm length) were placed in each treatment and reared for 63 days. Based on the result obtained indicate T3 treatment significantly improved and maintained the water quality followed by T2 as compared to T1. The results showed the amount of ammonia and nitrate in T3 and T2 supplied with PSB was gradually decreased from day 21 until day 33. While significantly lower amount of ammonia and nitrate was acquired from day 33 until day 63 of the experiment. A part form that the specific growth rate for T3 showed a significantly higher (2.65%) when compared to T2 (2.08%) and T1 (1.49%). Based on this result it can be concluded that the treatment with PSB showcased the bacteria's ability to utilize the and absorb nutrients, thereby maintaining and improving water quality. It also proven that the cultured PSB can be used as an alternative treatment in treating and maintaining water quality at fish rearing tank. The potential use of beneficial bacteria in culture system able to accelerate nitrogen cycle for sustainable way of wastewater management.
| Item Type: | Project Paper |
|---|---|
| Subjects: | S Agriculture > SH Aquaculture. Fisheries. Angling |
| Faculty: | Faculty of Agriculture and Forestry Sciences |
| Depositing User: | Mr. Azman Mohamad |
| Date Deposited: | 08 Dec 2025 08:26 |
| Last Modified: | 08 Dec 2025 08:26 |
| URI: | http://psaspb.upm.edu.my/id/eprint/2542 |
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