scholarly journals Chemical cleaning to evaluate the performance of silica-pectin membrane on acid mine drainage desalination

2021 ◽  
Vol 1195 (1) ◽  
pp. 012057
Author(s):  
F R Mustalifah ◽  
A Rahma ◽  
Mahmud ◽  
Sunardi ◽  
M Elma
Keyword(s):  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Water Flux ◽  
Drainage Water ◽  
Water Desalination ◽  
Feed Water ◽  
Cleaning Process ◽  
Chemical Cleaning ◽  
Salt Rejection ◽  
Acid Mine

Abstract Pervaporation process is an excellent and potential way applied for desalting acid mine drainage water. Nevertheless, the water flux was reduced gradually due to the issue of membrane fouling. To resolve this problem, cleaning process was chosen to maintain the water flux of silica-pectin membranes. This study aims to recover the water flux and salt rejection of the silica-pectin membranes via chemical cleaning process applied for acid mine drainage water desalination with various temperature of feed water (25-60 °C). Silica-pectin membrane was formulated by employing TEOS functioning as silica precursor and pectin as carbon template from banana peels. Chemical cleaning of the membrane carried out by employing TiO2 solution + UV light radiation for an hour. Performance of the silica-pectin membrane was evaluated via pervaporation process under dead-end system. The performance of silica-pectin banana peels membrane found flux recovery from 10.6 kg.m− 2.h−1 and flux recovery of 17.54 kg.m− 2.h−1. It shows that flux recovery higher than before backwashing process. Also, silica-pectin membrane results in all of the salt rejection <99 %. It is concluded that the chemical backwashing process is important to apply to recover the water flux of membrane, also, this process considers to save and reduce the operational costs.

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.

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>

scholarly journals Biogenic catalysis in sulphide minerals' weathering processes and acid mine drainage genesis.

2014 ◽  
Vol 61 (1) ◽  
Author(s):  
Mária Kušnierová ◽  
Mária Praščáková ◽  
Anna K Nowak ◽  
Katarzyna Gorazda ◽  
Zbigniew Wzorek
Keyword(s):  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Precious Metals ◽  
Drainage Water ◽  
Arsenic Content ◽  
Natural Material ◽  
Oxidation Reactions ◽  
Process Selection ◽  
Acid Mine ◽  
Waste Dumps

Bioleaching and biogenesis are the main outputs from a large group of environmental processes participating in the natural material cycle, used in raw materials processing. Bio-oxidation reactions are the main basis for bioleaching procedures, often participating in parallel leaching processes. During the leaching processes of polycomponent sulphide substrates, the factor of process selection also plays an important role, being in direct relation to the electric properties and galvanic effect occurring between the individual components of the leaching substrate. This work gives a summary of the results of a research focused on the possibilities of using biotechnological procedures for treatment of Slovak sulphide ores. The object of the research is extraction of valuable metals, undesirable admixtures and degradation of crystal lattice of sulphides for subsequent chemical leaching processing of precious metals. The results of experiments on the existence of biogenic processes in situ on waste dumps from exploitation containing residual sulphides are also presented. The processes result in acid mine drainage water generation. These waters are strongly mineralised (over 48 g/L) and of low pH; that is why they are very caustic. The arsenic content (2.558 mg/L) in outflowing waters from old mines is high and over the limits set by the law.

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