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All Journal Astonjadro Mining Science and Technology Journal OPHIOLITE : Jurnal Geologi Terapan
Ambarsari, Ika Sartika
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Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Energy Engineering Environmental Science

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Exposure Analysis of Heavy Metals in Dugs Well Water of Telutu Jaya Village Community, Tinanggae District, South Konawe Regency Firdaus, Firdaus; Ambarsari, Ika Sartika; Anshari, Erwin; Wahab, Wahab; Saputra, Irfan
ASTONJADRO Vol. 13 No. 3 (2024): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v13i3.15474

Abstract

The ideal drinking water requirement is clean water that is colorless, odorless, and tasteless, doe not contain pathogenic germs, does not contain chemicals or heavy metals, does not endanger the health of living things, and is not economically harmful. The ARKL study is intended to calculate or predict the risk to human health, including identification of the presence of uncertainty factors, tracing to specific exposures, taking into account the inherent characteristics of the agent of concern, and the characteristics of specific targets. Based on the ARKL study, the minimum RQ and maximum RQ values for each risk agent are <1 (safe). This study used dug-well water from the community of Telugu Jaya Village. The purpose of the study was to assess the risk of exposure to heavy metals contained in dug-well water. Measurement parameters were carried out in the form of Ph, TSS, and nine heavy metal elements (Cu, Cd, Cr6+, CrT, Pb, Ni, Fe, Zn, and Co). After the measurement, the risk of heavy metal exposure to local community-dug well water was analyzed. The results showed that HI <1, so it was concluded that the level of heavy metal intake from the dug well was still below the reference dose (RfD), which means that the exposure limit was still safe.  
Kajian Pengolahan Air Asam Tambang Menggunakan Kapur Tohor (Ca(OH)2) di Kolam Pengendapan Lumpur (Settling Pond) Daerah Kalimantan Selatan Ambarsari, Ika Sartika; Sunandar, Suwarto; Setiawan, Muhammad Dedin
Mining Science And Technology Journal Vol 2 No 2 (2023): Mining Science and Technology Journal
Publisher : Program Studi Teknik Pertambangan, Fakultas Teknik, Universitas Sulawesi Tenggara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54297/minetech-journal.v2i2.482

Abstract

Provinsi Kalimantan Selatan dikenal sebagai salah satu daerah penambangan batubara terbesar di Indonesia, yang dilakukan dengan sistem tambang terbuka. Penambangan batubara dimulai dengan pembersihan lahan, pengupasan tanah penutup (overburden), hingga penggalian batubara. Akibat kegiatan penggalian batubara mengakibatkan mineral - mineral sulfida seperti pirit (FeS2) akan mengalami oksidasi sulfidasi, dimana terjadi reaksi antara mineral sulfida dengan oksigen dan air sehingga menghasilkan air asam tambang (AAT). Dalam memenuhi baku mutu lingkungan sesuai dengan peraturan perundang – undangan yang berlaku maka perlu dilakukan pengolahan AAT sehingga dapat memiliki kualitas yang sesuai dengan pemanfaatannya di lingkungan. Teknologi pengolahan AAT telah banyak dikembangkan, salah satunya adalah metode aktif menggunakan bahan kimia yang bersifat alkalin (bahan penetral kalsium dan ammonia). Penelitan ini difokuskan pada penggunaan dosis kapur tohor (Ca(OH)2) untuk menaikkan pH air asam tambang di Kolam Pengendapan Lumpur/KPL (settling pond). Pengkajian dilakukan pada skala laboratorium dan pengamatan langsung dilapangan. Dari hasil analisa laboratorium dan pengujian lapangan didapat dosis kapur tohor (Ca(OH)2) yang efektif untuk menaikkan pH air asam tambang dari pH awal 4 yaitu 0,4 gr/l.
Rancangan Desain Sump pada Pit Jamrud Kabupaten Konawe Utara Sulawesi Tenggara Ambarsari, Ika Sartika; Deniyatno; Anshari, Erwin; Setiawan, Arif
OPHIOLITE: Jurnal Geologi Terapan Vol 6 No 2 (2024): OKTOBER 2024
Publisher : Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56099/ophi.v6i2.p64-71

Abstract

A sump is a drainage facility located at the bottom of the pit. The sump design must be appropriate so that runoff water flowing on the surface can be maximally accommodated. This can overcome stagnant water on the ground and avoid disruptions to mining productivity. Jamrud Pit has an area of 4.14 ha and is mined using the open pit method. The purpose of this research is to calculate and analyze the water discharge that will enter the sump and design the sump according to the volume of runoff water entering the sump. Based on the research results, there are two sumps placed at the bottom of the pit according to the pit cross-section model. Sump 1 has a runoff water volume of 2,914.24 m3, so it is designed with a top area of 27 x 27 m2 and a base area of 21 x 21 m2 with a depth of 5 m and can accommodate a water volume of 2,997.6 m3. While in sump 2, the volume of incoming runoff water is 579.85 m3, so it is designed with a top area of 14 x 14 m2 and a base area of 8 x 8 m2 with a depth of 5 m so that it can accommodate a water volume of 663.18 m3. The sump cross-section model is adjusted to the characteristics of the soil layer, namely the trapezoidal model.
Co-Authors Anshari, Erwin Arif Setiawan Deniyatno Firdaus Firdaus Irfan Saputra Setiawan, Muhammad Dedin Suwarto Sunandar Wahab Wahab