Techno-economic analysis of integrated multitrophic Clarias gariepinus and Arthrospiraplatensis with different agitation period

Wijayanti, Marini and Tanbiyaskur, Tanbiyaskur and Jubaedah, Dade and Amin, Mohamad and Fitrani, Mirna and Gofar, Nuni (2023) Techno-economic analysis of integrated multitrophic Clarias gariepinus and Arthrospiraplatensis with different agitation period. AACL Bioflux, 16 (1). pp. 179-189. ISSN 1844-8143

Text (Article) 2023.179-189, Marini et el..pdf - Published Version Restricted to Repository staff only until 28 February 2026. Download (406kB)

Abstract

Arthrospira platensis is a cyanobacteria that contains high levels of protein, fatty acids, minerals, vitamins, amino acids, and phycocyanins. The cultivation of Arthrospira platensis is constrained by fertilizers that have relatively high prices, so alternative fertilizers are used, one of which is catfish waste which has sufficient nutrient content for the growth of A. platensis which can be integrated as IMTA (Integrated Multi-trophic Aquaculture) Clarias-Arthrospira. Cultures of A. platensis on a mass scale often use open culture ponds in the form of raceways because they are easy to handle. Raceway pond agitation uses pedals that rotate for 24 hours leading to high electricity usage costs which account for 23% of total production costs. This study aims to determine the efficient stirring time on the growth of microalgae A. platensis. This study used 3 treatments with different stirring frequencies, namely treatment 1 stirring for 24 hours (T24), treatment 2 stirring for 12 hours (T12), and control using aeration for 24 hours (TC). After harvesting the biomass, the water from filtration has flowed into the catfish rearing container. Parameters observed were daily density of A. platensis, specific growth rate of A. platensis, revenue-cost (R/C) ratio, return of investment (ROI) and feed conversion ratio of catfish rearing that was used for A. platensis production. The results of the specific growth rate of A. platensis in this study were TC 23.625%, T24 21.162%, T12 21.105% per day. The maximum density at TC and T12 was 0.8 g.L-1 on day 10 while at T24 0.8 g.L-1 on day 9. Revenue Cost (R/C) ratio can be reached at TC 0.94, T24 1.09, T12 1.12. The result of catfish rearing used TC, T24, and T12 waste water treatments with A. platensis showed that the feed conversion ratio of catfish rearing was 1.38, 1.30, and 1.04 respectively. The stirring using a raceway container for 12 hours produced the best results compared to other treatments

Item Type:	Article
Subjects:	S Agriculture > S Agriculture (General) > S1-(972) Agriculture (General)
Divisions:	05-Faculty of Agriculture > 54294-Soil Science (S1)
Depositing User:	Prof. Nuni Gofar
Date Deposited:	09 Jun 2023 23:50
Last Modified:	09 Jun 2023 23:50
URI:	http://repository.unsri.ac.id/id/eprint/107510

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