NINGSIH, TRI PUTRI (2025) PERBEDAAN KONSENTRASI LIMBAH BUDIDAYA UDANG VANAME (Litopenaeus vannamei) SEBAGAI MEDIA DALAM PEMBENTUKAN ARTIFICIAL BIOFILM Nannochloropsis oculata. S1 thesis, universitas malikussaleh.

	Text TRI PUTRI NINGSIH 210330029. cover.pdf Download (214kB)
	Text TRI PUTRI NINGSIH 210330029. abstrak.pdf Download (135kB)
	Text TRI PUTRI NINGSIH 210330029.- bab 1.pdf Download (343kB)
	Text TRI PUTRI NINGSIH 210330029.- dapus.pdf Download (384kB)
	Text TRI PUTRI NINGSIH ,210330029.pdf Restricted to Registered users only Download (3MB)

Abstract

ABSTRACT Nannochloropsis oculata is a unicellular microalgae belonging to the phytoplankton group, often found in marine, fresh, and brackish waters. These cells are green like small balls or spheres with cell sizes ranging from 2-5 µm. This microalgae has a lipid content of around 28.3% of dry weight. The main problem in the culture of Nannochloropsis oculata is the high cost of commercial fertilizers in cultivation and the high cost during harvesting. The solution to this problem is to utilize vaname shrimp cultivation waste, along with the increasing vaname shrimp culture, the potential of vaname shrimp cultivation waste is also supported by the high nutrient content in the waste. This study also uses biofilm technology. This biofilm will grow microalgae on a substrate so that a biofilm is formed that is actively photosynthesizing. The purpose of this study was to determine the effect of providing vaname shrimp cultivation waste in the formation of Nannochloropsis oculata biofilm on growth rate, free cell and biofilm cell biomass, free cell and biofilm biomass productivity, and lipid content. This research was conducted on 29 September – 02 December 2024 at the Hatchery and Cultivation Technology Laboratory, Aquaculture Study Program, Faculty of Agriculture, Malikussaleh University. This study used a non-factorial Completely Randomized Design (CRD) consisting of 5 treatments and each was repeated 3 times. Treatment A Control (KW21 fertilizer media), B (25% vaname cultivation liquid waste + 75% seawater), C (50% vaname cultivation liquid waste + 50% seawater), D (75% vaname cultivation liquid waste + 25% seawater) and treatment E (100% vaname cultivation liquid waste). Based on the statistical analysis of the F test (ANOVA), the difference in the concentration of vaname shrimp cultivation waste as a medium in the formation of biofilms significantly affected the growth rate, free cell biomass, free cell biomass productivity, and lipid content. However, it did not significantly affect the biofilm cell biomass and biofilm productivity of Nannochloropsis oculata. The best results in treatment D 75% vaname shrimp cultivation waste + 25% seawater with a specific growth rate of 0.091 cells/day, free cell biomass of 1.118 gr/L, free cell biomass productivity of 0.0492 gr/L/day. and lipids of 22.21%. Meanwhile, the best results of biofilm cell biomass, biofilm cell biomass productivity in treatment C. The results of the water quality of the culture media showed a temperature value of 29.3 - 31.1oC, pH ranging from 7-8.5, salinity 30 ppt, DO 4.92 - 7.72 ppm, final nitrate 16.7 – 25.3 mg/L, initial phosphate 0.98 – 14.88 mg/L, final phosphate 0.05 – 0.13 mg/L, initial TOC 3.85 – 21.2 mg/L and final TOC 32.5 – 60 mg/L. Keywords: Nannochloropsis oculata, vaname shrimp cultivation waste, and biofilm

Item Type:	Thesis (S1)
Subjects:	S Agriculture > SH Aquaculture. Fisheries. Angling
Divisions:	Fakultas Pertanian > 11901 - Jurusan Ilmu Kelautan
Depositing User:	Tri Putri Ningsih
Date Deposited:	28 Aug 2025 03:08
Last Modified:	28 Aug 2025 03:08
URI:	https://rama.unimal.ac.id/id/eprint/14519

Actions (login required)

View Item