CALL US

+86 17838360708

remediation of acid mine drainages with recycled concrete

remediation of acid mine drainages with recycled concrete

Remediation of Acid Mine Drainages with Recycled Concrete ...

Mar 30, 2017  Acid mine drainage (AMD) generated during mining operations is characteristically acidic and contains metals at concentrations that are toxic to aquatic ecosystems. This study, through laboratory testing and analysis, evaluated the low-cost construction waste product, recycled concrete aggregate (RCA) as a remediation material for AMD.

get price

Remediation of acid mine drainage with recycled concrete ...

Mar 06, 2020  A study was conducted to evaluate the efficacy of recycled concrete aggregate (RCA) and off-specification fly ash (FA) in remediating acid mine drainage (AMD). The pH and AMD concentrations of calcium (Ca), magnesium (Mg), iron (Fe), chromium (Cr),

get price

The role of secondary minerals in remediation of acid mine ...

Apr 05, 2019  In a similar study by Regmi et al. , recycled concrete samples were initially effective in treating four synthetic acid mine drainage solutions but after a period of time failed as efficiency in metal removal in most cases steadily decreased to 0 and did not

get price

Evaluation of waste materials for acid mine drainage ...

Jan 15, 2017  The results of this study are intended to provide comparisons between the effectiveness of recycled concrete aggregate and fly ash as remediation materials for treatment of acid mine drainage. The conclusions of this study can be used as foundations for long-term, field scale studies that investigate the use of RCA and fly ash in treating AMD.

get price

Remediation of acid mine drainage SpringerLink

10%  May 29, 2019  Acid mine drainage induced by the mining industry causes environmental and economic issues. Acid mine drainage contains mainly metals such as Fe, Al, Cu, Ca, Mg, Mn and Zn. Preventing the formation of acid mine drainage has not been found feasible. As a consequence, remediation treatments have been developed during the last years to remove metals and

get price

Evaluation of waste materials for acid mine drainage ...

Recycled concrete aggregates Metals Leaching pH Alkalinity abstract Laboratory scale tests were conducted to assess the efficiency of two different types of waste materials to remediate acid mine drainage (AMD). The waste materials used in the current study were recycled con-crete aggregates (RCAs), and fly ashes.

get price

The role of secondary minerals in remediation of acid mine ...

Apr 05, 2019  In a similar study by Regmi et al. , recycled concrete samples were initially effective in treating four synthetic acid mine drainage solutions but after a period of time failed as efficiency in metal removal in most cases steadily decreased to 0 and did not

get price

[PDF] Acid mine drainage remediation options: a review ...

Acid mine drainage (AMD) causes environmental pollution that affects many countries having historic or current mining industries. Preventing the formation or the migration of AMD from its source is generally considered to be the preferable option, although this is not feasible in many locations, and in such cases, it is necessary to collect, treat, and discharge mine water.

get price

Costs of Remediation at Mine Sites,

----- Costs of Remediation TABLE OF CONTENTS 1.0 INTRODUCTION 1 1.1 Cost Factors 1 1.2 Organization of Report 3 2.0 ACID ROCK DRAINAGE 4 2.1 Waste Rock Pile 5 2.2 Underground Mine Drainage 10 3.0 SEEPAGE AND OVERFLOW FROM LEACH SYSTEMS AND TAILINGS IMPOUNDMENTS 13 3.1 Overflow or Breach of an Impoundment Structure 13 3.2 Leakage from the Face or Toe of a Dam 14 4.0 MINE

get price

(PDF) Sustainable, Low-Cost Waste Materials in Remediating ...

A study was conducted to evaluate the efficacy of recycled concrete aggregate (RCA) and off-specification fly ash (FA) in remediating acid mine drainage (AMD).

get price

Treatment of acidic groundwater in acid sulfate soil ...

acid neutralisation behaviour of recycled concrete and its potential to remove dissolved Al and Fe. The results confirmed that recycled concrete could effectively treat acidic groundwater from an ASS terrain, resulting in near-neutral effluent over a long period with complete removal of Al and Fe.

get price

(PDF) Remediation of Acid Mine Tailings and Recovery of ...

An interdisciplinary team of students from New Mexico State University has developed a solution to Task I of the 1998 WERC Environmental Design Contest. The proposed process addresses the treatment of mine tailings which generate acid and the

get price

Acid mine drainage in the Iberian Pyrite Belt: 2. Lessons ...

Mar 19, 2013  The Iberian Pyrite Belt (IPB), SW Spain and Portugal, contains about 100 abandoned mine wastes and galleries that release acid mine drainages (AMD) to the Tinto and Odiel rivers. In situ passive remediation technologies are especially suitable to remediate the drainages of these orphan sites. However, traditional remediation systems, designed for coal mines, have been demonstrated inefficient

get price

A Fixed Bed Pervious Concrete Anaerobic Bioreactor for ...

The development of low-operational-cost and low-operational-complexity active sulphate (SO4) reducing bioremediation for Acid Mine Drainage (AMD) is an ongoing pursuit towards sustainable mining. This study introduces a fixed bed pervious concrete anaerobic bioreactor as a second stage AMD remediation process. The study investigated the pH self-regulation capabilities, SO4 remediation ...

get price

Bioremediation for Acid Mine Drainage and Heavy Metals ...

Apr 29, 2021  Acid mine drainage (AMD) is an extremely environmentally hazardous by-product of mining. Often from natural leaching of groundwater, excess precipitation, or flooding of a mine, water interacts with minerals and rock containing sulfur (commonly pyrite, or FeS 2) and creates sulfuric acid (H 2 SO 4) and a dissolved iron ion through a series of oxidation reactions.

get price

Treatments for acid mine drainage — Science Learning Hub

Feb 12, 2014  Learn more about the Stockton Opencast Mine on the Bathurst Resources Limited website. References. Hengen, T.J., Squillace, M.K., O’Sullivan, A.D. and Stone, J.J. (2014). Life cycle assessment analysis of active and passive acid mine drainage treatment technologies. Resources, Conservation Recycling. In press, published online ahead of ...

get price

Neutralization of Acid Mine Drainage and CO2 ...

The present paper deals with applicability of waste concretes for neutralization of acid mine drainage (AMD) and mineralization of carbon dioxide (CO 2).Ground waste concrete powders of under 75 µm were added to artificial mine drainage of 500 mL, until their pH reached about 11.

get price

Pavement and Geotechnical Engineering Civil ...

Pavement and Geotechnical Engineering courses. The academic program provides a fundamental background in pavement analysis and design for new and existing pavements, Hot-mix asphalt (HMA) and Portland cement concrete (PCC) material characterization needed for the state-of-the-art mechanistic-empirical pavement analysis and design, management of large road networks and strategy analysis for

get price

Effects of cellulose nanocrystals on the acid resistance ...

Apr 04, 2020  Acid mine drainage presents an important threat to cementitious structures. This study is aimed at investigating the effect of cellulose nanocrystals (CNCs) on the acid resistance of cementitious composites. CNCs were added to mortar mixtures as additives at cement volume ratios of 0.2vol%, 0.4vol%, 1.0vol%, and 1.5vol%. After 28 d of standard curing, the samples were immersed in a sulfuric ...

get price

Dr Carlito Tabelin UNSW Research

Carlito is an environmental geochemist with interests in sustainable mine waste management, prevention/control of acid mine/rock drainage (AMD/ARD), contaminant geochemistry, rock/soil-water interactions, geochemical reactive transport modelling, environmental electrochemistry and remediation of contaminated sites.

get price

TO: Victor J. Izzo Senior Engineering Geologist

PEAKS MINE REMEDIATION PROJECT, NAPA COUNTY . Purpose Statement: The Corona Drain Tunnel at the Corona Mine and the Twin Peaks Adit at the Twin Peaks Mine are each point sources for mine drainage. Acid mine drainage (AMD) conditions are exhibited in the mine drainages, resulting in the discharge of metals to surface waters. Results from field

get price

Treatment of Mine Drainage Using Permeable Reactive ...

Feb 14, 2002  Permeable reactive barriers designed to enhance bacterial sulfate reduction and metal sulfide precipitation have the potential to prevent acid mine drainage and the associated release of dissolved metals. Two column experiments were conducted using simulated mine-drainage water to assess the performance of organic carbon-based reactive mixtures under controlled groundwater flow

get price

Acid Mine Drainage Solutions for the Mineral Industry

Since acid mine drainage comes from abandoned mines these sites are often in mountainous, uninhabited areas where access to the site may be difficult. Many systems have been built with ease of operation being paramount. In fact, the systems are often built for operation with no onsite operator. This has led to the use of caustic for neutralization.

get price

New USGS Filter Removes Phosphorus from Waste Water

Jul 19, 2017  Acid mine drainage occurs when certain minerals in the ground – like pyrite or other sulfide minerals – are disturbed by mining, digging and excavating, exposing these minerals to air and moisture. When this happens, it causes a chemical reaction in the sulfide minerals that creates sulfuric acid and a variety of dissolved metals.

get price

RESEARCH and DEMONSTRATION STUDIES in ACID MINE

contact with these drainages. Acid mine drainages, as the name defines, are highly acidic with pHs below 2.8, anion concentrations (usually sulfate) exceeding 10,000 mg/L, and acidities averaging 5,000 mg/L (as CaCO3). They form when certain sulfide minerals are exposed to

get price

REMOVAL OF MANGANESE FROM ACID MINE DRAINAGE

for Mn removal, localized regions of pH 9 or 10 and allowance for a reasonable reaction time can remove Mn with receiving water pHs near 8. MANGANESE REMOVAL IN THE PRESENCE OF IRON Iron is present in most mine drainages. Iron removal requires the two ingredients needed for Mn removal

get price

Neutralization of Acid Mine Drainage and CO2 ...

The present paper deals with applicability of waste concretes for neutralization of acid mine drainage (AMD) and mineralization of carbon dioxide (CO 2).Ground waste concrete powders of under 75 µm were added to artificial mine drainage of 500 mL, until their pH reached about 11.

get price

Energy and environmental impact assessment of a passive ...

Jun 25, 2020  The adsorption system for Sb-rich mine drainage remediation. The adsorption system was based on an adsorption and removal study of Sb using activated alumina (Xu et al. 2001).The basic system was scaled up for the onsite field adsorption treatment system (Kårelid et al. 2017).The assumed flowrate for the system was 20 m 3 /day. The system was composed of one initial mixing tank, two

get price

MINERAL PROCESSING, RECYCLING and ENVIRONMENTAL REMEDIATION

Generation and Prevention of Acid Drainages from Mine Tailings Keiko SASAKI Proc. of the 2nd International Symposium on Novel Carbon Resource Science, Mar. 2009 rv-014 De-ashing and Upgrading Low-grade Coal to Reduce the Environmental Load Tsuyoshi HIRAJIMA Newsletter, Novel Carbon Resource Sciences, G-COE Program Kyushu University, Jun. 2009

get price

Dennis G. Grubb, PHD, PE - Senior Principal Technologist ...

Launched six RD efforts in the areas of beneficial use of steel slag, recycled material MSE-wall fills, passive remediation of acid mine drainage, new reactive core mat materials, treatment of ...

get price

ERA-MIN Joint Calls The Projects’ Abstracts

be taken into account because acid drainages are also generated at abandoned mine sites. The CELMIN project aims to develop concepts for environmental- friendly effective green chemicals by the chemical modification of nanofibrillar celluloses (NFCs) to be functional in mining applications responsible for dissolved and suspended solids load.

get price

Dr Carlito Tabelin UNSW Research

Carlito is an environmental geochemist with interests in sustainable mine waste management, prevention/control of acid mine/rock drainage (AMD/ARD), contaminant geochemistry, rock/soil-water interactions, geochemical reactive transport modelling, environmental electrochemistry and remediation of contaminated sites.

get price

Closure at the San Manuel Plant Site: How Closure Aligned ...

Closure activities involved removal of structures and concrete high walls, stack demolition, concrete burial, ripping of asphalt surfaces, heavy earthwork regrading, ... 31 tons 75% Recycled/incinerated Soil with PCBs (mine site) 490 tons None Landfilled ... The re-establishment of natural drainages was done wherever practical. When it was

get price

The application of reused powdered wastes as adsorbent for ...

Jul 15, 2008  The pH of the zero point charge (pH(pzc)) of the CPW was determined to be 7.8 by acid-base titration. From the batch adsorption tests, the complete removal of arsenic (up to 20 mg L(-1)) was observed with CPW (2 g) at pH ranging from 3.0 to 8.0. However, there was a significant decrease in arsenate adsorption at higher pH.

get price