scholarly journals Model of behaviour of conductivity versus pH in acid mine drainage water, based on fuzzy logic and data mining techniques

2009 ◽  
Vol 11 (2) ◽  
pp. 147-153 ◽  
Author(s):  
A. Jiménez ◽  
J. Aroba ◽  
M. L. de la Torre ◽  
J. M. Andujar ◽  
J. A. Grande
Keyword(s):  
Fuzzy Logic ◽  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Drainage Water ◽  
Chemical Processes ◽  
Temporal Database ◽  
Heavy Metal Concentrations ◽  
Ph Values ◽  
Acid Mine ◽  
Field Assessment

Acid Mine Drainage is a water pollution type characterized by several topics such as high acidity, sulfate and heavy metal concentrations. One of the chemical characteristics is the absence of correlation between pH and conductivity, as could be expected. This last parameter is well correlated with other variables such as sulfate concentration and can be used as a field assessment. The absence of pH/conductivity correlation is largely discussed by several authors. In this work, the use of fuzzy logic algorithms in a large temporal database (over 20,000 records) has allowed us to study the “hidden” relation between them. This work finds this correlation, with some conditions such as the range of pH where it happens. Maybe the study of the usual range of pH values in previous studies has disturbed the correlation because of other chemical processes.

Field assessment of arsenic immobilization in soil amended with iron rich acid mine drainage sludge

2015 ◽  
Vol 108 ◽  
pp. 1073-1080 ◽  
Author(s):  
Myoung-Soo Ko ◽  
Ju-Yong Kim ◽  
Hyun-Sung Park ◽  
Kyoung-Woong Kim
Keyword(s):  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Acid Mine ◽  
Field Assessment

Using red mud bauxite for the neutralization of acid mine tailings: a column leaching test

2006 ◽  
Vol 43 (11) ◽  
pp. 1167-1179 ◽  
Author(s):  
M Paradis ◽  
J Duchesne ◽  
A Lamontagne ◽  
D Isabel
Keyword(s):  
Acid Mine Drainage ◽  
Red Mud ◽  
Mine Drainage ◽  
Field Investigation ◽  
Drainage Water ◽  
Leaching Test ◽  
Column Leaching ◽  
Acid Mine ◽  
Column Leaching Test ◽  
Set Up

Acid mine drainage (AMD) is an environmental problem produced when sulphides come in contact with an oxidant (± bacteria) and water, producing acid generation and metals leaching. One solution proposed is to use red mud bauxite (RMB), which is very alkaline, to neutralize oxidized acidic tailings. A column leaching test has been set up to evaluate major aspects of field constraints. First, a field investigation was conducted in which RMB was spread in aggregates before mixing with tailings. This setup has been reproduced in the laboratory and compared with a homogeneous mixture. The analyses of the water effluent do not show any important difference between the two mixtures. Second, some studies show that the addition of Cl brine to RMB helps to maintain the long-term neutralization potential. Brine addition increased the concentrations of Ca, Mg, Na, K, and Cu in drainage water. Columns were set up with 10% and 20% RMB to evaluate the effect of the quantity applied. Addition of greater than 20% RMB increases the leachate alkalinity and concentrations of Al, Cu, Pb, As, Fe, and SO42– in drainage waters. The addition of 10% RMB, however, significantly improves the quality of drainage water over a period of 125 days and results in concentrations and pH values within the ranges of those recommended by Directive 019 of the Ministère de l'environnement, Québec.Key words: acid mine drainage, red mud bauxite, tailings, environmental geochemistry, neutralization.

Application of Fuzzy Logic Techniques for Biogeochemical Characterization of Dams Affected by Acid Mine Drainage (AMD) Processes in the Iberian Pyrite Belt (IPB), Spain

2020 ◽  
Vol 231 (4) ◽  
Author(s):  
María J. Rivera ◽  
María Santisteban ◽  
Javier Aroba ◽  
José Antonio Grande ◽  
José Miguel Dávila ◽  
...  
Keyword(s):  
Fuzzy Logic ◽  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Iberian Pyrite Belt ◽  
Acid Mine

scholarly journals Geochemical Modeling of Iron and Aluminum Precipitation during Mixing and Neutralization of Acid Mine Drainage

Minerals ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 547 ◽  
Author(s):  
Darrell Kirk Nordstrom
Keyword(s):  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Geochemical Modeling ◽  
Lime Treatment ◽  
Mixing Processes ◽  
Ph Values ◽  
Acid Mine ◽  
Water Composition ◽  
Slaked Lime ◽  
Best Fit

Geochemical modeling of precipitation reactions in the complex matrix of acid mine drainage is fundamental to understanding natural attenuation, lime treatment, and treatment procedures that separate constituents for potential reuse or recycling. The three main dissolved constituents in acid mine drainage are iron, aluminum, and sulfate. During the neutralization of acid mine drainage (AMD) by mixing with clean tributaries or by titration with a base such as sodium hydroxide or slaked lime, Ca(OH)2, iron precipitates at pH values of 2–3 if oxidized and aluminum precipitates at pH values of 4–5 and both processes buffer the pH during precipitation. Mixing processes were simulated using the ion-association model in the PHREEQC code. The results are sensitive to the solubility product constant (Ksp) used for the precipitating phases. A field example with data on discharge and water composition of AMD before and after mixing along with massive precipitation of an aluminum phase is simulated and shows that there is an optimal Ksp to give the best fit to the measured data. Best fit is defined when the predicted water composition after mixing and precipitation matches most closely the measured water chemistry. Slight adjustment to the proportion of stream discharges does not give a better fit.

Sulfidogenic fluidized bed treatment of real acid mine drainage water

2011 ◽  
Vol 102 (2) ◽  
pp. 683-689 ◽  
Author(s):  
Erkan Sahinkaya ◽  
Fatih M. Gunes ◽  
Deniz Ucar ◽  
Anna H. Kaksonen
Keyword(s):  
Acid Mine Drainage ◽  
Fluidized Bed ◽  
Mine Drainage ◽  
Drainage Water ◽  
Acid Mine

scholarly journals Morphological and physiological characteristics of streamers in acid mine drainage water from a pyritic mine.

1985 ◽  
Vol 31 (1) ◽  
pp. 17-28 ◽  
Author(s):  
NORIO WAKAO ◽  
HIROKO TACHIBANA ◽  
YAEKO TANAKA ◽  
YONEKICHI SAKURAI ◽  
HIDEO SHIOTA
Keyword(s):  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Drainage Water ◽  
Physiological Characteristics ◽  
Acid Mine

THE EFFECT OF ACID MINE DRAINAGE WATER ON TWO PENNSYLVANIA SOILS

Soil Science ◽  
1979 ◽  
Vol 127 (2) ◽  
pp. 102-107 ◽  
Author(s):  
E. J. CIOLKOSZ ◽  
L. T. KARDOS ◽  
W. F. BEERS
Keyword(s):  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Drainage Water ◽  
Acid Mine

scholarly journals Phytoremediation and Nanoremediation : Emerging Techniques for Treatment of Acid Mine Drainage Water

2018 ◽  
Vol 3 (2) ◽  
pp. 190 ◽  
Author(s):  
Pratyush Kumar Das
Keyword(s):  
Acid Mine Drainage ◽  
Mine Water ◽  
Mine Drainage ◽  
Anthropogenic Activities ◽  
Drainage Water ◽  
Environmental Pollutant ◽  
Water Drainage ◽  
Mining Sites ◽  
Acid Mine ◽  
The Cost

<p>Drainage from mining sites containing sulfur bearing rocks is known as acid mine drainage (AMD). Acid mine drainage water is a serious environmental pollutant that has its effects on plants, animals and microflora of a region. Mine water drainage mainly occurs due to anthropogenic activities like mining that leave the sulfur bearing rocks exposed. This drainage water poses as a potent soil, water and ground water pollutant. Although a lot of remediation measures have been implemented in the past but, none of them have been able to solve the problem completely. This review intends to focus on new emerging and better techniques in the form of phytoremediation and nanoremediation for treatment of acid mine drainage water. Besides, the review also gives more importance to the phytoremediation technique over nanoremediation because of the cost effectiveness and eco-friendly nature of the first and the nascent status of the latter. A hypothetical model discussing the use of hyperaccumulator plants in remediation of acid mine water has been proposed. The model also proposes natural induction of the phytoremedial ability of the plants involved in the remediation process. The proposed model assisted by inputs from further research, may be helpful in proper treatment of acid mine drainage water in the near future.</p>

Sign in / Sign up

Export Citation Format

Share Document