Evaluation of organic carbon and microbial inoculum for bioremediation of acid mine drainage

Ruehl, Matthew D.; Hiibel, Sage R.

doi:10.1016/j.mineng.2020.106554

Cited by 17 publications

(5 citation statements)

References 38 publications

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“…We chose to monitor AMD and PAGM at the Perry Canyon AML because it is a site with problems characteristic of those present at many of the thousands of waste rock piles and adits in the Western United States [19] (Figure 1a). It has been established by the Bureau of Land Management (BLM) and the University of Nevada, Reno as an important site for testing and evaluating various monitoring, evaluation, and treatment methods for AMLs [20][21][22]. In 1995, BLM and the Nevada Bureau of Mines and Geology (NBMG) identified the Jones-Kincaid Mine and the associated mine waste rock pile (Figure 1b), as being potentially hazardous due to the presence of AMD [23].…”

Section: Field Sitementioning

confidence: 99%

Mapping Potentially Acid Generating Material on Abandoned Mine Lands Using Remotely Piloted Aerial Systems

et al. 2021

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Weathering and transport of potentially acid generating material (PAGM) at abandoned mines can degrade downstream environments and contaminate water resources. Monitoring the thousands of abandoned mine lands (AMLs) for exposed PAGM using field surveys is time intensive. Here, we explore the use of Remotely Piloted Aerial Systems (RPASs) as a complementary remote sensing platform to map the spatial and temporal changes of PAGM across a mine waste rock pile on an AML. We focus on testing the ability of established supervised and unsupervised classification algorithms to map PAGM on imagery with very high spatial resolution, but low spectral sampling. At the Perry Canyon, NV, USA AML, we carried out six flights over a 29-month period, using a RPAS equipped with a 5-band multispectral sensor measuring in the visible to near infrared (400–1000 nm). We built six different 3 cm resolution orthorectified reflectance maps, and our tests using supervised and unsupervised classifications revealed benefits to each approach. Supervised classification schemes allowed accurate mapping of classes that lacked published spectral libraries, such as acid mine drainage (AMD) and efflorescent mineral salts (EMS). The unsupervised method produced similar maps of PAGM, as compared to supervised schemes, but with little user input. Our classified multi-temporal maps, validated with multiple field and lab-based methods, revealed persistent and slowly growing ‘hotspots’ of jarosite on the mine waste rock pile, whereas EMS exhibit more rapid fluctuations in extent. The mapping methods we detail for a RPAS carrying a broadband multispectral sensor can be applied extensively to AMLs. Our methods show promise to increase the spatial and temporal coverage of accurate maps critical for environmental monitoring and reclamation efforts over AMLs.

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Section: Field Sitementioning

confidence: 99%

Mapping Potentially Acid Generating Material on Abandoned Mine Lands Using Remotely Piloted Aerial Systems

et al. 2021

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“…For remediation to occur, SRB require, besides the presence of sulfate as electron acceptors, anaerobic conditions and an outer carbon source as electron donors, typically supplied from a simple organic compound. The process gives hydrogen sulfide and bicarbonate that treat the AMD by creating insoluble metal sulfides [52]. The produced metal sulfide sludge is more dense, faster settling, and less subject to dissolution.…”

Section: Selective Removal Of As(v) From Amdmentioning

confidence: 99%

Selective Removal of As(V) Ions from Acid Mine Drainage Using Polymer Inclusion Membranes

2020

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Acid mine drainage (AMD) is globally recognized as one of the environmental pollutants of the priority concern due to high concentrations of toxic metals and sulfates. More rigorous environmental legislation requires exploitation of effective technologies to remove toxic metals from contaminated streams. In view of high selectivity, effectiveness, durability, and low energy demands, the separation of toxic metal ions using immobilized membranes with admixed extractants could ameliorate water quality. Cellulose triacetate based polymer inclusion membranes (PIMs), with extractant and plasticizer, were studied for their ability to transport of As(V) ions from synthetic aqueous leachates. The effects of the type and concentration of extractant, plasticizer content, and sulfuric acid concentration in source phase on the arsenic removal efficiency have been assessed. Under the best of applied conditions, PIM with Cyanex 921 as extractant and o-nitrophenyl octyl ether (o-NPOE) as plasticizer showed high repeatability and excellent transport activity for selective removal of As(V) from AMD.

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“…Active treatment is carried out with the addition of lime and alum to increase pH, remove metals and sulfates, and reduce TSS from wastewater, but in the long term will produce gypsum deposits (Masindi 2017) which require periodic dredging. Active treatment costs are also very high when contaminants are high in volume and require continuous addition and monitoring of materials (Ruehl and Hiibel 2020). Another alternative is a passive treatment, which is an option because it requires little or no input during long-term operation, resulting in low costs and minimal maintenance.…”

Section: Introductionmentioning

confidence: 99%

Selection of organic matter as a wetland substrate for acid mine drainage treatment

Sekarjannah¹,

Mansur²,

Abidin³

et al. 2023

JPSL

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Acid mine drainage (AMD) is one of the problems arising from mining activities. Acid mine drainage is formed due to the oxidation of sulfide minerals such as pyrite (FeS2) by water and oxygen. Alternative management of AMD in a sustainable and eco-friendly way is constructed wetland. Therefore, this study was conducted to determine the type and composition of potential organic matter that can improve AMD quality. The study consisted of three stages: a screening of organic matter, a combination of two organic matters, and a combination of cow manure and empty fruit bunches (EFB) in various compositions. Types of organic matters used are cow, goat, and chicken manure, three types of compost, EFB, sawdust, wood chips, chopped water hyacinth, cocopeat, fresh waste and compost waste cajuputi leaf, waste of citronella distillation, baglog waste, and bagasse. The results showed that several types of organic matter could increase the pH of AMD. The combination of EFB and cow manure with a ratio of 2:1 is the best result because it can increase pH, reduce dissolved heavy metals and sulfates, and availability of raw materials that are abundant in nature, especially in Indonesia.

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Evaluation of organic carbon and microbial inoculum for bioremediation of acid mine drainage

Cited by 17 publications

References 38 publications

Mapping Potentially Acid Generating Material on Abandoned Mine Lands Using Remotely Piloted Aerial Systems

Mapping Potentially Acid Generating Material on Abandoned Mine Lands Using Remotely Piloted Aerial Systems

Selective Removal of As(V) Ions from Acid Mine Drainage Using Polymer Inclusion Membranes

Selection of organic matter as a wetland substrate for acid mine drainage treatment

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