Study of the Utilization of Heavy Metal Biosorption (Cr, Co, Cu, Fe, Cu, Mn, Ni) with Chitosan from Crab and Kupang Shell Waste

Mercury (Hg) heavy metal pollution is one of the serious problems that can threaten human health and ecosystems. In an effort to reduce mercury contamination, this research uses sea pandanus leaves (pandanus tectorius) as a natural biosorbent. The purpose of this study is to determine the contact time and adsorbing concentration capacity of sea pandanus leaves to mercury ions. One of the steps to reduce mercury contamination is by biosorption. The data obtained were analyzed using J.S.A.P software to determine the real difference test on contact time and adsorption concentration. The results of this study indicate that sea pandanus has a mercury adsorption capacity determined by the optimum contact time in the ratio of 1:100, the best optimum contact time is 60 minutes with an adsorption concentration of 100 ppm by achieving an adsorption of 0.372 mg/g using a mesh size of 120, Comparison of 1:75, the best optimum contact time is 30 minutes with an adsorption concentration of 0.907 mg/g using a mesh size of 120. Sea pandan leaves are proven as a potential biosorbent to remove mercury ions with the application of sea pandan leaves with seawater, which is 95% able to absorb heavy metals in polluted seawater.

Efficiency of Sea Pandan Leaves (Pandanus tectorius) in the Biosorption of Mercury (Hg) in Coastal Areas

Fitri,

Yulita,

Pardi

et al. 2024

Analysis Of Hazardous Heavy Metal Content in Maritime Ecosystems

Fitriani,

Pardi,

Jordan

2024

Maritime ecosystems, rich in diverse biota and natural resources, are an essential element in maintaining global ecological balance. However, the sustainability of these ecosystems is threatened by harmful heavy metal contamination, which can jeopardize the health of maritime ecosystems and the well-being of humans who rely heavily on marine resources. This study aims to identify heavy metal content in the maritime environment. Using a literature review method on data from 2019 to 2023, it was analyzed and corroborated with journal articles. The results highlighted nine hazardous heavy metals, such as copper, lead, cadmium, zinc, chromium, nickel, iron, manganese and mercury, which are capable of contaminating seawater and causing toxic effects on marine organisms. Therefore, serious efforts are needed to reduce and manage heavy metal contamination in the maritime environment to maintain ecosystem sustainability and protect the well-being of humans who depend on marine resources

CrabCare: Innovative Chitosan Biopolymer-Based Ointment from Crab Shell Waste by Utiling

Maulin,

Aprilia,

Nainggolan

et al. 2024

Wounds are a common problem that requires effective care to prevent infection and accelerate the healing process. The use of conventional antiseptics is often unsatisfactory due to the long time required. Therefore, the innovation of using chitosan from crab shell waste as a base material for ointment becomes the focus of this research. This study aims to develop a chitosan-based ointment that can accelerate the wound healing process more efficiently. The research results show that the ointment developed from crab shells through the deproteinization process can significantly accelerate wound healing. Chitosan extracted from crab shells has unique properties such as bioactivity, biodegradability, and biocompatibility, which are effective in inhibiting bacterial and pathogen growth, as well as stimulating granulation tissue formation. Thus, the CrabCare ointment made from crab shell chitosan offers a promising alternative as a therapeutic agent for more effective and environmentally friendly wound care. In conclusion, the development of CrabCare provides new opportunities in wound therapy through innovative and sustainable means.