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All Journal Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII
Retno Astuti, Theophila Listiyani
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Pemanfaatan Air Sungai Punan Untuk Masyarakat Sekitar Tambang, Kecamatan Gunung Tabur, Kabupaten Berau, Kalimantan Timur Sugiarto, Wahyu; Retno Astuti, Theophila Listiyani
Retii Vol 18 No 1 (2023): Prosiding Seminar Nasional ReTII ke-18 (Edisi Penelitian)
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Kabupaten Berau merupakan salah satu daerah sebagai Wilayah Izin Usaha Pertambangan sehingga dapat mempengaruhi kualitas air sungai. Air merupakan sumber daya alam yang diperlukan untuk hajat hidup orang banyak dan bahkan oleh semua makhluk hidup. Air sungai sangat bermanfaat terutama untuk masyarakat di wilayah pemukiman. Peran sungai memberikan sumber kehidupan bagi manusia, seperti pemanfaatan air dan kesuburan tanah disekitarnya. Tujuan penelitian ini adalah untuk mengetahui nilai parameter fisik, kimia dan mikrobiologi air intake Sungai Punan, air bersih (Water Treatment Plant) dan air minum (Reverse Osmosis) di lokasi penelitian. Metode penelitian yang dilakukan yaitu pengambilan sampel air intake Sungai Punan, air bersih untuk keperluan higiene sanitasi (Water Treatment Plant) dan air minum (Reverse Osmosis). Nilai rerata pH air intake Sungai Punan 7,8 dan air bersih 7,5 serta air minum 7,1. Nila rerata kekeruhan air bersih 14 NTU dan air minum < 0,01 NTU. Seluruh parameter fisik, kimia dan biologi pada air intake Sungai Punan, air bersih dan air minum berada pada nilai baku mutu yang dipersyaratkan. Proses Water Treatment Plant dan Reverse Osmosis dapat meniadakan bakteri Coliform dan E.Coli.
Nikel Laterit Pulau Gag: Menelusuri Proses Terbentuknya dan Implikasinya dalam Industri Pertambangan Jarot, Jarot Pujiono; Retno Astuti, Theophila Listiyani
Retii Vol 18 No 1 (2023): Prosiding Seminar Nasional ReTII ke-18 (Edisi Penelitian)
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

The nickel laterite on Gag Island has had a significant impact on the mining industry, with major economic benefits and noteworthy social and environmental impacts. This research aims to understand the formation, characteristics, impacts, and management of nickel laterite on Gag Island through literature studies, field surveys, and laboratory analysis. Gag Island has ophiolite rocks that contain nickel, and limonite nickel is used in the HPAL battery industry. In contrast, saprolite nickel is used in the production of Ferro-Nickel (FeNi) with RKEF technology. The Gag Island laterite nickel mine has environmental impacts related to waste processing and water use in nickel extraction, requiring large investments in infrastructure, processing technology, regulatory compliance, and human resources. Further research is needed to understand the characteristics of Gag Island nickel laterite and address the challenges of facing increasing global nickel demand.
Co-Authors Jarot, Jarot Pujiono Wahyu Sugiarto