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All Journal Jurnal Biosains Pascasarjana Journal of Marine and Coastal Science
Yusuf Taufik Hidayat
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Dentistry Environmental Science Health Professions Immunology & microbiology

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Depuration of Heavy Metals with Nanoparticle-Sized Active Charcoal from Coconut Shell (Cocos nucifera) in Blood Cockles (Anadara granosa) Putri Alia Paramitha; Yusuf Taufik Hidayat; Kamiliya Zahrah Taher; Intan Cahyarini; Boedi Setya Rahardja; A Shofy Mubarak; Kustiawan Tri Pursetyo
Journal of Marine and Coastal Science Vol. 11 No. 2 (2022): JUNE
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jmcs.v11i2.35235

Abstract

Anadara granosa are one of the benthic organisms that are frequently reported because contained heavy metals because of water pollution. This is because A. granosa is a feeder filter so that accumulates heavy metals in its body. Reduce the levels of heavy metals with activated charcoal from coconut shells in the absorbance process using the depuration method. It is re-optimized with the use of nano-active charcoal. The goal was to determine the effect of concentrations of nano-active charcoal from coconut shells on the heavy metal content of A. granosa. Stages of this reserch, namely charcoal activation, ultrasonication, SEM testing, blood shell depuration, and heavy metal testing. Based on the results of the Scanning Electron Microscope (SEM) Test it is known that the charcoal particles are sized 10-9 nm. The types of heavy metals found included hydrargyrum (Hg) 0.0009 mg/kg, cadmium (Cd) 0.62 mg/kg, and plumbum (Pb) 1.82 mg/kg. Heavy metals with lowest content is found in P5 (active charcoal concentration of 15% of the sample weight) of mercury (Hg) 0.0002 mg/kg; cadmium (Cd) 0.1 mg/kg; and lead (Pb) 0.373 mg/kg. This shows that the higher concentraion of activated charcoal given, the lower heavy metal content.
MORPHOLOGICAL COMPARISON OF Octolasmis sp. ECTOPARASITES INFESTING THE GILLS OF SCALLOPED SPINY LOBSTER (Panulirus homarus) WITH DIFFERENT FIXATIVE SOLUTIONS Yusuf Taufik Hidayat; Kismiyati; Muhamad Amin
Jurnal Biosains Pascasarjana Vol. 25 No. 2 (2023): JURNAL BIOSAINS PASCASARJANA
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jbp.v25i2.2023.156-162

Abstract

Octolasmis is a type of ectoparasite which is often found on the gills of lobsters. Octolasmis can also be a threat to lobster populations and can even cause high mortality rates. This study aims to detect the effect of different fixative solutions on the morphological characters of Octolasmis infesting the gills of scalloped spiny lobsters (Panulirus homarus). Samples of Octolasmis were collected from the gills of wildly-caught scalloped spiny lobsters in East Lombok, West Nusa Tenggara. The samples were immersed separately in two different fixative solution which are either absolute ethanol or formalin solution. After 7 days, morphological analysis of Octolasmis was analysed using an integrated optilab stereo binocular microscope and a lucida camera. The result showed that there were significant differences in the morphological condition of Octolasmis sp. including skin colour, organ appearance and size of the Octolasmis. In general, the result showed that formalin is better fixative solution.
Co-Authors A. Shofy Mubarak Boedi Setya Rahardja Intan Cahyarini Kamiliya Zahrah Taher Kismiyati , Muhamad Amin Pursetyo, Kustiawan tri Putri Alia Paramitha