Study of sulphate ions removal from acidic waters using ion exchange resin

Abstract Acid Mine Drainage (AMD) is the most common pollution related to mining. It consists of an aqueous solution containing high metals and sulphate concentration, which impact surface and groundwater and lead to serious environmental problems. Low pH and high concentrations of heavy metals and sulphates are limiting for many various treatment technologies in these acidic waters. Ion - exchange is a very powerful technology where one or more undesirable contaminants are removed from water by exchange with another non-objectionable or less objectionable substance. Many of materials for the ion - exchange treatment is available in a variety forms and have widely differing chemical and physical properties. The paper deals with study of ion - exchange process under static and dynamic conditions for sulphate removal from acidic waters using ion - exchange resin with the aim to apply the results for treatment of acid mine drainage. Two types of experiments were performed under static and dynamic conditions. The efficiency of AMBERLITE MB20 resin for SO4 2- removal from model solution H2SO4 under static conditions decreases from 86.6 % for concentration 100 mg/L to efficiency 66.9 % for concertation 1000 mg/L. The efficiency for sulphate removal from AMD was only 41%. The study also presents three experiments under dynamic conditions, one with new ion - exchange resin a two experiments with its regenerated form. It was find that ion-exchange capacity decreases numbers of regeneration steps.

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Regeneration of barium carbonate from barium sulphide in a pilot-scale bubbling column reactor and utilization for acid mine drainage

Water Science & Technology ◽

10.2166/wst.2012.857 ◽

2012 ◽

Vol 65 (2) ◽

pp. 324-331 ◽

Cited By ~ 2

Author(s):

J. Mulopo ◽

J. N. Zvimba ◽

H. Swanepoel ◽

L. T. Bologo ◽

J. Maree

Keyword(s):

Acid Mine Drainage ◽

Flow Rate ◽

Mine Drainage ◽

Barium Carbonate ◽

Pilot Scale ◽

Carbonation Reaction ◽

Column Reactor ◽

Acid Mine ◽

Sulphate Removal ◽

Co2 Flow

Batch regeneration of barium carbonate (BaCO3) from barium sulphide (BaS) slurries by passing CO2 gas into a pilot-scale bubbling column reactor under ambient conditions was used to assess the technical feasibility of BaCO3 recovery in the Alkali Barium Calcium (ABC) desalination process and its use for sulphate removal from high sulphate Acid Mine Drainage (AMD). The effect of key process parameters, such as BaS slurry concentration and CO2 flow rate on the carbonation, as well as the extent of sulphate removal from AMD using the recovered BaCO3 were investigated. It was observed that the carbonation reaction rate for BaCO3 regeneration in a bubbling column reactor significantly increased with increase in carbon dioxide (CO2) flow rate whereas the BaS slurry content within the range 5–10% slurry content did not significantly affect the carbonation rate. The CO2 flow rate also had an impact on the BaCO3 morphology. The BaCO3 recovered from the pilot-scale bubbling column reactor demonstrated effective sulphate removal ability during AMD treatment compared with commercial BaCO3.

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Recovery of Copper from Acid Mine Drainage by an Integrated Sulphate Reducing Process

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.71-73.557 ◽

2009 ◽

Vol 71-73 ◽

pp. 557-560 ◽

Cited By ~ 3

Author(s):

Bo Wei Chen ◽

Jian Kang Wen ◽

Xing Yu Liu

Keyword(s):

Acid Mine Drainage ◽

Hydraulic Retention Time ◽

Mine Drainage ◽

Removal Rate ◽

Uasb Reactor ◽

Sulfate Reducing ◽

Acid Mine ◽

Sulphate Removal ◽

High Concentrations ◽

Treat Acid Mine Drainage

An integrated sulfate reducing process was used to treat Acid Mine Drainage with high concentrations of Cu2+, Fe and SO42-. The water treatment system integrated a sulfidogenic UASB bioreactor with a precipitation reactor which was used to recover copper. Sodium lactate was used as energy source. The effective volume of the UASB reactor was 2 L and the hydraulic retention time was 12.57h. In the sulphate removal reactor, sulphate was removed from 21160 to 195 mg/L with a rate of 4427.8 mg/L/d. Cu2+ and Fe was removed by biologically generated S2- and OH- from 360 and 6520 to 0.049 mg/L and less than 10 mg/L respectively. The average COD, copper and iron removal rate was 2523.2, 15.21 and 274.98 mg/L/d separately. The effluent pH reached 6.0-7.0. The results showed potential usage of this bioreactor in treating Acid Mine Drainage.

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Recovery of rare earth elements from acid mine drainage by ion exchange

Environmental Technology ◽

10.1080/09593330.2020.1713219 ◽

2020 ◽

pp. 1-12 ◽

Cited By ~ 6

Author(s):

E. C. B. Felipe ◽

K. A. Batista ◽

A. C. Q. Ladeira

Keyword(s):

Rare Earth ◽

Acid Mine Drainage ◽

Ion Exchange ◽

Rare Earth Elements ◽

Mine Drainage ◽

Acid Mine

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Techno-Economic Study of Copper Removal from Acid Mine Drainage by Ion-Exchange Technique

International Journal of Thermal and Environmental Engineering ◽

10.5383/ijtee.06.02.006 ◽

2013 ◽

Vol 06 (2) ◽

Keyword(s):

Acid Mine Drainage ◽

Ion Exchange ◽

Mine Drainage ◽

Cation Exchange Resin ◽

Strong Acid ◽

Economic Feasibility ◽

Operating Conditions ◽

Copper Removal ◽

Exchange Method ◽

Acid Mine

Economic feasibility has been studied for removal of copper from acid mine drainage wastewater by ion exchange. Ion exchange method has been used for removal of copper from industrial wastewaters. Experiments were conducted using packed bed column. The present study were carried out for solutions with concentrations of 100 mg/lit to 200 mg/lit and pH values of 3 to 6, using Indion 730, strong acid cation exchange resin. Under the present operating conditions considered, the strong acid type resin was found to bring down initial copper content by almost 46-56 % and at pH 5, 60% of copper removal for 200 mg/lit of initial concentration was found. The techno economic feasibility was then studied and the rate of return found to be 21% which is economically viable.

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