Evaluation of waste materials for acid mine drainage remediation

Fuel ◽  
2017 ◽  
Vol 188 ◽  
pp. 294-309 ◽  
Author(s):  
Stephanie N. Jones ◽  
Bora Cetin
2003 ◽  
Vol 129 (10) ◽  
pp. 910-915 ◽  
Author(s):  
Hema J. Siriwardane ◽  
R. S. S. Kannan ◽  
Paul F. Ziemkiewicz

2018 ◽  
Vol 20 (3) ◽  
pp. 512-528 ◽  

<p>The present study systematically and comprehensively reviewed different aspects of treating Acid Mine Drainage (AMD) with active treatment and waste materials. The work also critically reviews the status and the factors associated with the treatment process. Although, conventional active methods are very efficient but they are mainly associated with costly material as well as high maintenance cost which enhances the cost of entire treatment system. Waste materials such as fly ash, metallurgical slag, zero valent iron (ZVI), cement kiln dust (CKD), organic waste such as peat humic agent (PHA) and rice husk can be efficiently used for the treatment of AMD. However, efficiency of different waste material varied from each other due to the variation in their physical and chemical characteristics. The results from the investigation showed that fly ash, metallurgical slag and CKD raise the pH of acidic solution more, in comparison to ZVI and organic waste, due to their richness in lime content. Furthermore, fly ash can be efficiently converted and utilized in its other derivative such as chemically modified fly ash and zeolite. Efficiency of ZVI is hindered by the presence of higher concentration of total dissolved solids. PHA can treat AMD that is mild acidic in nature. Besides, long retention time is required for the removal of heavy metals and sulfur with organic waste and sulfate reducing bacteria (SRB). The study also potentially reviewed that metal removal from AMD varied due to composition of AMD and the characteristics of waste materials. However, waste materials demand more attention for its practical applicability in field conditions due to its richness, higher possibility for recycling and reuse, low installation cost and harmless nature towards the environment.</p>


2020 ◽  
Vol 1 (1) ◽  
pp. 771-784
Author(s):  
Latipa Henim ◽  
Steven Pearce

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 


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