Rahayu Ardiani Putri, Islami Afifah Faradilla, Saputra Eka, Sulmartiwi Laksmi, Rahmah Anisa Ur, Kurnia Kiki Adi
Department of Aquaculture, Faculty of Fisheries and Marine, Universitas Airlangga, Jalan Mulyorejo Kampus C, Surabaya 60115, Indonesia.
Department of Marine, Faculty of Fisheries and Marine, Universitas Airlangga, Jalan Mulyorejo Kampus C, Surabaya 60115, Indonesia.
Int J Biol Macromol. 2022 Jan 1;194:843-850. doi: 10.1016/j.ijbiomac.2021.11.137. Epub 2021 Nov 24.
The properties of chitin-based adsorbents varied among studies since they are influenced by different factors, such as the types of base and acid used to extract the chitin. Therefore, this works aimed to investigate the impact of four different acid solutions on the extraction and properties of chitin from shrimp shell waste, and to evaluate the adsorption performance of the obtained chitin on removing dye from an aqueous solution. The result showed that HSO, HCl, and HNO could remove high minerals from the shrimp shell, while the effect of CHCOOH was inferior. The Fourier Transform Infrared (FTIR) and X-ray diffraction (XRD) indicated that the extracted chitin was α-amorphous structure, regardless of the type of acid solution. However, the type of acid solution influenced the crystallinity index of the extracted chitin. The Scanning Electron Microscope (SEM) showed both fibrillar material and porous structures. In addition, the chitin extracted through demineralization using HSO was more effective in removing RBBR dye from aqueous solution, followed by HCl, HNO and the last, CHCOOH treatment. The performances of chitin-based adsorbent could be attributed to the strength of acid solution used to remove mineral during the extraction process and the obtained pore structures.
基于甲壳素的吸附剂的性质在不同研究中有所不同，因为它们受到不同因素的影响，例如用于提取甲壳素的碱和酸的类型。因此，本研究旨在探讨四种不同酸溶液对从虾壳废料中提取甲壳素及其性质的影响，并评估所得甲壳素对从水溶液中去除染料的吸附性能。结果表明，HSO₄、HCl和HNO₃可以从虾壳中去除大量矿物质，而CH₃COOH的效果较差。傅里叶变换红外光谱（FTIR）和X射线衍射（XRD）表明，无论酸溶液的类型如何，提取的甲壳素均为α-无定形结构。然而，酸溶液的类型影响了提取的甲壳素的结晶度指数。扫描电子显微镜（SEM）显示出纤维状物质和多孔结构。此外，通过使用HSO₄进行脱矿质提取的甲壳素在从水溶液中去除RBBR染料方面更有效，其次是HCl、HNO₃，最后是CH₃COOH处理。基于甲壳素的吸附剂的性能可归因于提取过程中用于去除矿物质的酸溶液的强度以及所得的孔结构。
