scholarly journals Prediction Potential Acid Mine Drainage of Epithermal High Sulfidation Deposits using Static Test

2019 ◽  
Vol 353 ◽  
pp. 012023
Author(s):  
D E Andini ◽  
R S Gautama
Keyword(s):  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Static Test ◽  
High Sulfidation ◽  
Acid Mine ◽  
Potential Acid

scholarly journals Prediksi Laju Pembentukan Air Asam Tambang dengan Metode Column Leaching Test

2019 ◽  
Vol 23 (2) ◽  
pp. 129-135
Author(s):  
Muhammad Ramli ◽  
Nur Ilham Situru ◽  
Muhammad Thamrin
Keyword(s):  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Test Method ◽  
Leaching Test ◽  
Column Leaching ◽  
Static Test ◽  
Acid Mine ◽  
Column Leaching Test ◽  
Kinetic Test ◽  
Potential Acid

Prediction of Acid Mine Drainage Forming using Method of Column Leaching Test. One of the environmental problems in coal mining activities is the formation of acid mine drainage. Prediction of the formation of acid mine drainage is important as an effort to control environmental impacts. Acid mine water occurs with interactions between potentially acid-forming material with oxygen, bacteria and water. Objective of study is to analyze the potential for acid mine drainage forming based on material characteristics. The research method was carried out using static and kinetic tests. The static test method classifies materials according to the ability to produce clean acids with observed parameters such as paste pH, total sulfur, Acid Neutralizing Capacity (ANC), Net Acid Generation (NAG), Maximum Potential Acid (MPA), and Net Acid Producing Potential (NAPP). The Kinetic test method predicts the rate of acid-forming of a material. The kinetic test uses the Column Leaching Test Method by using material with composition designed to represent field condition. The kinetic method parameters are pH, electrical conductivity, acidity, alkalinity, sulfate content, and dissolved metal content (Fe, Mn, and Cd). Results of the static test classified the material into NAF Non-Acid Forming (NAF), Potential Acid Forming (PAF) and Uncertain (UC) material categories. The results of the Column Leaching Method classified the material into categories of potential and no potential to form acid mine water. The columns that have the potential to form acid mine drainage occur in columns with large amounts of tonnage of PAF material or those in the upper layer so that it reacts with oxygen. The columns that have no potential to produce acid mine drainage in columns with PAF material are in the middle layer or mixed with NAF material.

scholarly journals Potential Formation of Acid Mine Drainage In Putra Perkasa Abadi Coal Mining Company - Girimulya Site (BIB), Tanah Bumbu Regency, South Kalimantan

2018 ◽  
Vol 73 ◽  
pp. 04003
Author(s):  
Sri Maharani ◽  
Purwanto Purwanto ◽  
Jafron Wassiq Hidayat ◽  
Joko Triraharjo
Keyword(s):  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Environmental Damage ◽  
Material Management ◽  
Acid Mine ◽  
World Energy ◽  
Potential Formation ◽  
Potential Acid ◽  
The Government ◽  
Rock Strata

Coal is a combustible fossil fuel, formed from plants that have been consolidated between rock strata and can be used by geothermal. World Energy Council said Indonesia is the fifth world coal producer after China, United States, India and Australia. Acid Mine Drainage is become one of environmental damage from coal massive exploitation in Indonesia. Precautions are required to reduce risks and minimize the formation of acid mine drainage at overburden disposal in order to meet the quality standards set by the Government. The action is carried out by isolating Potential Acid Forming (PAF) materials with non-acidic (NAF / Non Acid Forming) materials to avoid exposure to air and water with sulphide minerals. Good PAF and NAF material management in the disposal area will minimize the potential of acid mine drainage.

scholarly journals SISTEM PENGOLAHAN AIR ASAM TAMBANG DARI MATERIAL WASTE DAN APLIKASI MODEL ENKAPSULASI PADA BENDUNGAN TSF DI TAMBANG EMAS MARTABE

2020 ◽  
Vol 1 (1) ◽  
pp. 771-784
Author(s):  
Latipa Henim ◽  
Steven Pearce
Keyword(s):  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Mining Industry ◽  
Waste Materials ◽  
Gold Mine ◽  
Storage Facility ◽  
Production Potential ◽  
Acid Mine ◽  
Potential Acid ◽  
Sealing Layer

ABSTRAK Indonesia adalah negara yang kaya akan sumber daya alam, baik berupa sumber daya alam pulih maupun yang tidak pulih. Industri pertambangan adalah salah satu aktivitas yang bergerak dalam  mengolah sumber daya alam yang tidak pulih yang dapat memberikan dampak positif maupun negatif baik dari sisi sosial, ekonomi maupun lingkungan. Air asam tambang adalah salah satu dampak dari industri pertambangan yang harus ditangani secara serius yang terbentuk akibat reaksi mineral sulfida (pirit) dan logam berat yang terpapar ke media air dan udara yang berasal dari batuan yang terbuka pada saat  aktivitas penambangan berlangsung. Sejak tahun 2013, tambang emas Martabe telah menerapkan manajemen air asam tambang (AAT) dalam konstruksi bendungan TSF dengan enkapsulasi sederhana yang dirancang dengan dua kategori utama batuan PAF (Potential Acid Forming) dan NAF (Non Acid Forming) sebagai bagian dari material tanggul TSF konstruksi hilir dan juga mengembangkan basis data karakteristik geokimia material waste di lokasi tambang emas Martabe. NAPP (Net Acid Production Potential) adalah metode standar industri yang digunakan untuk menentukan potensi untuk mengoksidasi dan menghasilkan bahan limbah asam, yang nantinya akan ditempatkan di bendungan TSF dengan metode enkapsulasi. Metode ini bertujuan untuk membungkus material sulfida beresiko tinggi yang sedang di tambang di Martabe dengan lapisan penyegel (sealing layer) dengan mengambil keuntungan dari iklim (curah hujan yang tinggi) dan sifat material ROM (run of mine). Konstruksi lapisan penyegelan dan penjadwalan material waste dilakukan dengan pengembangan strategi operasional pengelolaan limbah yang terperinci dan terintegrasi. Monitoring rutin dengan instrument WRSF (Waste Rock Storage Facility) untuk pengukuran oksigen dan juga dari pengukuran kualitas air menunjukkan kalau enkapsulasi material waste pada embakment TSF berhasil mencegah pembentukan air asam tambang. Kata kunci: material waste, air asam tambang, naf, paf, bendungan tailing, model enkapsulasi  ABSTRACT Indonesia is a country that is rich in natural resources, both in renewable and non-renewable. The mining industry is one of the activities that is engaged in processing non-renewable natural resources that can have positive and negative impacts both in terms of social, economic and environmental aspects. Acid mine drainage is one of the impacts of the mining industry which must be dealt with seriously which is formed due to the reaction of sulfide minerals (pyrite) and heavy metals which is exposed with water and air from rocks during mining activities.Since 2013, the Martabe gold mine has implemented mine acid drainage management (AMD) in TSF dam construction with simple encapsulation designed, with two main categories of PAF (Potential Acid Forming) and NAF (Non Acid Forming) rocks as part of construction TSF embankment material downstream and also develop the geochemical characteristics database of waste material at the Martabe gold mine site. NAPP (Net Acid Production Potential) value is an industry standard method to determine the potential to oxidize and produce acid waste materials, which will be placed in the TSF dam by encapsulation model. This method aims to wrap the high risk sulfide material in a mine at Martabe sealing layer to take advantage of both the climate (high rai fall) and material properties of run of mine (ROM). The construction of sealing layer and scheduling of waste is made possible by the development a detailed and integrated operational waste management strategy. Routine monitoring with the WRSF (Waste Rock Storage Facility) instrument for measuring oxygen and also from measurements of water quality shows that the encapsulation of waste material in TSF embankments successfully prevents the formation of acid mine drainage.  Key words: waste materials, acid mine drainage, naf, paf, tailing storage facility, encapsulation model 

There is gold in them hills: Predicting potential acid mine drainage events through the use of chemometrics

2018 ◽  
Vol 619-620 ◽  
pp. 1464-1472 ◽  
Author(s):  
Daniel Cozzolino ◽  
Shaneel Chandra ◽  
Jessica Roberts ◽  
Aoife Power ◽  
Piumie Rajapaksha ◽  
...  
Keyword(s):  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Acid Mine ◽  
Potential Acid

scholarly journals KAJIAN POTENSI PEMBENTUKAN AIR ASAM TAMBANG DARI TANAH LAPISAN PENUTUP BATUBARA ASAL KABUPATEN TELUK BINTUNI

2018 ◽  
Vol 14 (1) ◽  
pp. 51-60
Author(s):  
Markus Heryanto Langsa
Keyword(s):  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Continuous Process ◽  
Sulfide Mineral ◽  
Sulfide Minerals ◽  
Acid Base Balance ◽  
Acid Base ◽  
Acid Mine ◽  
Base Balance ◽  
Potential Acid

Acid mine drainage is formed when certain sulfide minerals in rocks are exposed to oxidizing. Upon exposure to oxidizing conditions, these sulfide minerals are oxidized in the presence of water and oxygen to form highly acidic, sulfate-rich drainage.  Acidity levels, and metal composition and concentration depend on the type and amount of sulfide mineral and the presence or absence of alkaline materials. If acid mine drainage has formed, it will be very difficult to stop the process as it is a continuous process until one of the reactions runs out. Acidic water containing heavy metals when flowing into rivers, loker or swamps will damage the condition of the ecosystem in the river. This will certainly cause a decrease in water quality. The purpose of this study is to examine the potential for the formation of acid mine drainage based on the acid base balance method. The results obtained in samples A, B1, B2, and C for the pasta pH test were 5.25, 4.20, 4.71, and 3.14, respectively. The results of the other parameters for the four samples were total sulfur contents (0.005%, 0.021%, 0.008%, 0.47%), acid neutralization ability (3.1, 2.82, 2.45, 13.07 kg H2SO4/ton), maximum acidic potential (0.153, 0.643, 0.245, 14.394 kg H2SO4/ton) and acid-base balance expressed as potential acid production (-12.917, -2.177, -3.065, 11,944). Evaluation of sample C data based on acid-base balance values (11.944 kg H2SO4/ton) and KPA/PKM ratio (<2, 0.17) indicating that sample C has the potential to form acid mine drainage if the coal mining process is carried out.

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