Hidayat, Fajar (2025) PENGARUH FERMENTASI PADA LIMBAH CAIR TAHU TERHADAP KUALITAS PROBIOTIK UNTUK BUDIDAYA PERIKANAN. Undergraduate thesis, UPN Veteran Jawa Timur.
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Abstract
Tofu wastewater is an effluent rich in organic material and has the potential to pollute the environment if discharged without treatment. On the other hand, aquaculture requires commercial probiotics which are relatively expensive. This study aimed to (1) Analyze the effect of fermentation composition and fermentation time on the abundance of Lactobacillus sp. in probiotics from tofu wastewater, (2) Test the effectiveness of the fermented probiotics on the growth and survival rate of Nile tilapia (Oreochromis niloticus), and (3) Analyze the potential of recycling tofu wastewater to reduce waste disposal. The study used a Completely Randomized Design (CRD) with four substrate composition treatments: P1 (30% TW : 30% water : 40% EM4), P2 (40% TW : 20% water : 40% EM4), P3 (50% TW : 10% water : 40% EM4), and P4 (60% TW : 0% water : 40% EM4). The parameters measured included the abundance of Lactobacillus sp., temperature, BOD₅, Specific Growth Rate (SGR), and Survival Rate (SR) of Nile tilapia. The results showed that the composition and fermentation time had a significant effect. The highest bacterial abundance was achieved in treatment P4 on day 14 (7.0 × 10⁶ CFU/mL). The best fermented probiotics (P1 and P2) produced tilapia growth (SGR 1.84%/day and 1.80%/day) comparable to the commercial probiotic EM4 (SGR 1.65%/day), with a 100% Survival Rate. Furthermore, the fermentation process successfully reduced the BOD₅ value of the wastewater by 87.03% (from 1095.25 mg/L to 142.10 mg/L), far below the established quality standard. It is concluded that the fermentation of tofu wastewater not only produces effective probiotics for Nile tilapia aquaculture but also is a potential recycling method to reduce environmental pollution. Keywords: Tofu Wastewater, Fermentation, Probiotics, Lactobacillus sp., Nile Tilapia, Aquaculture.
| Item Type: | Thesis (Undergraduate) | ||||||||
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| Subjects: | T Technology > TD Environmental technology. Sanitary engineering | ||||||||
| Divisions: | Faculty of Engineering > Departement of Environmental Engineering | ||||||||
| Depositing User: | fajar fajar hidayat | ||||||||
| Date Deposited: | 04 Dec 2025 09:27 | ||||||||
| Last Modified: | 04 Dec 2025 09:27 | ||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/47831 |
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