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Journal : Jurnal Techno Bahari

Studi Pengaruh Waktu Pengadukan Pada Proses Pemurnian Garam Dengan Kombinasi Metode Hidroekstraksi Na – Zeolit Ike Dayi Febriana, Annafiyah, Triyanti Irmiyana
Techno Bahari Vol 4 No 2 (2017)
Publisher : Politeknik Negeri Madura

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Abstract

Salt is one of the main commodities of the island of Madura especially in Sampang Regency. Salt is widely used for industrial, pharmaceutical, cosmetic, and household needs. Indonesian produce salt possess an average purity 90%, therefore salt refining is needed. Hidroextraction is one of salt refining method. In this experiment, hidroextraction was combined with Na – Zeolite as impurity settler. The aim of this research are to study about influence of stirring time and addition of Na – Zeolite in hidroextraction. The experiment were carried out from 4 to 12 minutes and used Na – Zeolite as much as 1 gr. The result of this experiment show that stirring time influenced the salinity. The highest salt content is produced at 4 minute stirring treatment that is equal to 99.9%. XRF analysis of zeolites showed increased levels of potassium (K) elements in zeolite solid.
Analisis Perubahan Tutupan Lahan Di Kawasan Pesisir Selatan Kota Sampang Dengan Menggunakan Citra Satelit Multitemporal Berbasis Sistem Informasi Geografis Annafiyah, Ike Dayi F, Akh. Maulidi
Techno Bahari Vol 5 No 2 (2018)
Publisher : Politeknik Negeri Madura

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Abstract

Remote Sensing and the Geospatial Information System (GIS) can facilitate observation of land cover changes including land changes along the coast. With this technology, supervision and control of changes in coastal area becomes easier, faster, and more accurate. Remote sensing technology based on satellite imagery uses Landsat 8 imagery as a multi temporal image. Sampang, which is located in the coastal area of Madura island, is very important to accommodate land cover areas along its coast to maintain coastal environmental conditions. In this study, an observation of land cover changes was carried out based on supervised classification result of Landsat 8 images in 2014 and 2017. The result of this study show that the method can provide accurate information about land cover and its changes with Kappa accuracy value is 0.77 (Substantial agreement) and 0.82 (Almost perfect agreement). Additional area of Land use is a water body 0.61%, mangrove area 0.30%, dry land agriculture 10.63%, and bushes 6.80%. The reduction area is settlement of 0.21%, paddy fields of 18.11% and ponds of 1.85%.