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Nurhidayat1, Erdawati2, Dyan Satya Saputra2, , Sukarman1
1Agency of Research and Development of Ornamental Fish Culture, Ministry of Maritime Affairs and Fisheries. Jl. Perikanan No 13, Pancoranmas, 16436 Depok, West Java. Tel. + 62-21-7765838, 7520482, Fax. + 62-21-7520482, email ♥:
2 Faculty of Mathematics and Natural Sciences, State University of Jakarta, Indonesia, Jl. Rawamangun Muka, East Jakarta 13220 Indonesia Tel: +6221 2926 60063

This research aims to synthesize magnetite-chitosan activated carbon adsorbent and ammonia and nitrite applications for ornamental fish. Results magnetite-chitosan activated carbon have been synthesized by mixing a solution of chitosan, FeCl2, FeCl3 and activated carbon as well as with glutaraldehyde to form a crosslinker via precipitation method. Characterization of magnetite-chitosan activated carbon is done by using FT-IR and SEM. Unit experiments conducted with treatment A. 0:25 grams, B. 0.50 grams, C. 0.75 grams, D. 1 gram, respectively be repeated three times. Adsorbent synthesis of research results based on FT-IR analysis showed a group N-H, O-H, C=O, C-N, and Fe-O, while the SEM analysis showed that the morphology of magnetite-chitosan activated carbon in the form of small clots. Results for the application of the adsorbent ammonia and nitrite done using UV-VIS spectrophotometer, the result is 1 gram of magnetite-chitosan activated carbon can reduce ammonia and nitrite as much as 72.22% and 29.79%.

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