e-ISSN:2528-0759; p-ISSN:2085-5842 JIPK. Volume 14 No 2. November 2022 DOI=10.20473/jipk.v14i2.32864 Sinta 1 (Decree No: 158/E/KPT/2021) Available online at https://e-journal.unair.ac.id/JIPK/index Short Communication Synthesis and Characterization of Nano Chitosan from Vannamei Shrimp Shell (Litopenaeus vannamei) Dian Wijaya Kurniawidi 1 * , Siti Alaa 1 , Eva Nurhaliza 1 , Desti Olga Saftri 1 , Susi Rahayu 1 , Muhamad Ali 2 , and Muhamad Amin 3* 1 Department of Physics, Faculty of Mathematics and Natural Science, University of Mataram, Mataram, 83125. Indonesia 2 Departement of Animal Sciences, Faculty of Animal Sciences, University of Mataram, Mataram, 83125. Indonesia 3 Department of Aquaculture, Faculty of Fisheries and Marine, Universitas Airlangga, Surabaya, 60115. Indonesia ARTICLE INFO Received: January 13, 2022 Accepted: March 17, 2022 Published: March 25, 2022 Available online: August 30, 2022 *) Corresponding author: E-mail: diankurnia@unram.ac.id, muhamad.amin@fpk.unair.ac.id Keywords: Chitin Chitosan Extraction Metal Adsorbent This is an open access article un- der the CC BY-NC-SA license (https://creativecommons.org/li- censes/by-nc-sa/4.0/) Abstract Shrimp cultivation produces shrimp wastes in several forms, including shells from the molting process. Shrimp shell waste can be used as a source of nano chitosan. Many researches have used nanochitosan for various applications, one of which is to adsorb heavy metal pollution. This present study aimed to extract chitosan from shrimp shells and investigate the ability of nano chitosan to adsorb Fe metal. The research began by isolating chitin and chitosan from shrimp shells through deproteinization, demineralization, and deacetylation. The obtained chitosan was afterward characterized using Fourier Transform Infrared (FTIR). Furthermore, the glassy ionic method was used to synthesize nano chitosan. Nano chitosan was characterized using a scanning electron microscope (SEM), and the Fe metal adsorption ability was measured using Atomic Absorption Spectroscopy (AAS). The FTIR results showed that the synthesized shrimp shells had successfully formed chitin compounds with the appearance of the C-O-C functional group, while the chitosan compounds with the appearance of O-H and N-H groups. The SEM characterization showed that nano chitosan with a size of 173.71 nm was successfully formed with identical morphology in the form of a fat (spherical), elongated, and irregular position. The nano chitosan was able to absorb Fe solution up to 81.35%. Therefore, nano chitosan from the shrimp shells is suitable as an adsorbent of heavy metal Fe. Cite this as: Kurniawidi, D. W., Alaa, S., Nurhaliza, E., Saftri, D. O., Rahayu, S., Ali, M., & Amin. M. (2022). Synthesis and Characterization of Nano Chitosan from Vannamei Shrimp Shell (Litopenaeus vannamei). Jurnal Ilmiah Perikanan dan Kelautan, 14(2):380-387. http://doi.org/10.20473/jipk.v14i2.32864 Copyright ©2022 Faculty of Fisheries and Marine Universitas Airlangga 380 JIPK (JURNAL ILMIAH PERIKANAN DAN KELAUTAN) Scientifc Journal of Fisheries and Marine