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All Journal Journal of Geoscience, Engineering, Environment, and Technology Jurnal Oase Nusantara
Rais, Mohammad
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Agriculture, Biological Sciences & Forestry Computer Science & IT Earth & Planetary Sciences Education Engineering Environmental Science Physics Other

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Penanganan bibit kerang hotate (Mizuhopecten yessoensis) di atas kapal pada perusahaan Yamatogoto, Hokkaido, Jepang Arta, Arta; Husen, Suharta Amijaya; Rais, Mohammad
Jurnal Oase Nusantara Vol 4 No 2 (2025)
Publisher : Balai Pengembangan Penjaminan Mutu Pendidikan Vokasi Bidang Kelautan Perikanan Teknologi Informasi dan Komunikasi

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Abstract

Kerang hotate (Mizuhopecten yessoensis) merupakan salah satu komoditas unggulan perikanan budidaya Jepang yang bernilai ekonomi tinggi, khususnya di wilayah Yamazaki, Hokkaido. Penelitian ini bertujuan untuk mengkaji teknik penanganan kerang Hotate secara langsung di atas kapal budidaya milik perusahaan Yamatogoto sebagai upaya mempertahankan mutu dan nilai produk sebelum didistribusikan ke pasar. Metode yang digunakan adalah observasi langsung terhadap tahapan penanganan bibit dan kerang dewasa yang meliputi pengangkatan dari perairan, pembersihan, sortasi, hingga transportasi dingin. Hasil penelitian menunjukkan bahwa penanganan kerang hotate yang dilakukan secara menyeluruh di atas kapal mampu menekan angka kerusakan fisik, menjaga kesegaran daging, serta mengurangi potensi kerugian pascapanen. Faktor-faktor seperti kondisi cuaca, arus laut, dan gangguan teknis mesin kapal menjadi tantangan utama dalam proses ini. Dari kegiatan magang yang berlangsung selama enam bulan, dapat disimpulkan bahwa sistem penanganan di atas kapal memberikan pengalaman lapangan yang penting dan efektif dalam pengelolaan rantai produksi scallop. Disarankan adanya peningkatan pelatihan teknis bagi kru kapal serta penelitian lanjutan dalam penerapan teknologi pengolahan dan sistem digitalisasi hasil panen.
Analysis of Content, Source and Impact of Heavy Metals in Sombori Island, Central Sulawesi, Indonesia Hasria, Hasria; Usman, Ida; Saeri, Karim; Nasaruddin; Sara Septiana; Rais, Mohammad; Harisma, Harisma; Musrajab, Silo
Journal of Geoscience, Engineering, Environment, and Technology Vol. 11 No. 1 (2026): JGEET Vol 11 No 01 : March (2026)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2026.11.1.23856

Abstract

A study was conducted on Sombori Island, Central Sulawesi. The purpose of this study was to determine the content of heavy metals and the origin of contamination and the impact of heavy metal contamination. Seawater samples totaling 30 stations were analyzed in the form of total suspended solids (TSS), pH, salinity and heavy metal content of hexavalent chromium (Cr6+) and nickel (Ni) using Atomic Absorption Spectrometry (AAS) analysis. The heavy metals chromium (Cr) and nickel in the sediment were analyzed using flame Atomic Absorption Spectrometry (AAS). The results of the study showed that heavy metals in seawater in the form of Ni are still safe for the marine ecosystem of the research area. However, the heavy metal Cr6+ has contaminated several marine waters stations because it has exceeded the established quality standards so that it can have a negative impact on the marine ecosystem including humans through the food chain. The content of heavy metal Cr in marine sediments has not passed the established sediment quality standards. However, for heavy metal Ni in sediment, it has exceeded the established sediment quality standards so that it has had a negative impact on the marine ecosystem that lives and feeds around/on the sediment including humans through the food chain. Sources of contamination of heavy metals in water and sediment are from the weathering of ultramafic rocks containing heavy metals, mining activities, shipping activities using fossil fuels, the use of ship paint containing heavy metals, solid waste from ships containing heavy metals and domestic waste.
Co-Authors Arta, Arta Harisma Buburanda, Harisma Hasria Hasria, Hasria Husen, Suharta Amijaya Ida Usman Musrajab, Silo Nasaruddin Saeri, Karim Sara Septiana