Treatment of high-manganese mine water with limestone and sodium carbonate

Silva, Adarlene M.; Cunha, Emanoelle C.; Silva, Flávia D.R.; Leão, Versiane Albis

doi:10.1016/j.jclepro.2012.01.032

Cited by 92 publications

(38 citation statements)

References 37 publications

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“…The band at 725 cm -1 was associated with the manganese. Similarly, Silva et al found that the infrared characteristic spectra of manganese carbonate produced in mine water was at 724 cm −1 [22]. The XRD analysis (as shown in Figure 1b) showed that the soluble manganese from the EMR was mainly converted to rhodochrosite (MnCO 3 ).…”

Section: Characterization Of Raw Emrmentioning

confidence: 72%

Carbonation precipitation of manganese from electrolytic manganese residue treated by CO2 with alkaline additives

Chen¹,

Liu²,

Qian³

et al. 2016

Proceedings of the 2015 2nd International Conference on Machinery, Materials Engineering, Chemical Engineering and Biotechnolog

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Abstract. This work reports the results of carbonate precipitation of soluble manganese by CO 2 with alkaline additives with the aim of eliminating the harm caused by electrolytic manganese residue (EMR). Results showed that CaO exhibited a better performance for the precipitation of manganese which was converted to rhodochrosite (MnCO 3 ) by infrared spectra and XRD analyses and that the precipitation rate of manganese reached 99.99% at 800 mL/min CO 2 flow rate and 5% CaO for 20 min reaction time. The leached concentration of manganese of the treated EMR was reduced to 0.2 mg/L and the leached concentrations of heavy metals of the treated EMR were less than the discharge standard of China (GB8978-1996). Another interesting finding was that the pH value and the ORP of the treated EMR slurry were about 7 and 320 mV respectively, which favoured landfill and reuse of EMR.

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Section: Characterization Of Raw Emrmentioning

confidence: 72%

Carbonation precipitation of manganese from electrolytic manganese residue treated by CO2 with alkaline additives

Chen¹,

Liu²,

Qian³

et al. 2016

Proceedings of the 2015 2nd International Conference on Machinery, Materials Engineering, Chemical Engineering and Biotechnolog

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“…6 (a-h). Through 50 days of operation have shown all toxic element in mine water completely removed by sequences of fly ash > LFS > biomass (Silva et al, 2012). The mine water contained a high concentration of Fe (822.029 Mg/L) and after in contact with fly ash and biomass ash within 5 days of treatment, Fe content was completely removed (Fig.…”

Section: Results On Amd Treatment Using Fly Ash Ladle Furnace Slag Amentioning

confidence: 91%

Remediation of Heavy Metals by using Industrial Waste by Products in Acid Mine Drainage

Mohammed¹,

Atta²,

Yaacub³

2017

American Journal of Engineering and Applied Sciences

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Acid Mine Drainage (AMD) is one of the main important problems being combated today. Laboratory tank experiments were conducted to evaluate the use of industry waste to adsorb and control the mobilization of metals from contaminated acid mine water. The main physical conditions such as pH and treatment performance are displayed. The solution of acid mine were sampled from the sites and their concentrations of heavy metals were determined. Three types of industrial waste were used as low-cost adsorbent materials in the treatment process which are Ladle Furnace Slag (LFS), Fly Ash (FA) and Biomass Ash (BA). The materials were described by X-Ray Diffraction (XRD), FESEM images and X-Ray Fluorescence (XRF). A comparative study between the removal efficiencies of heavy metals were evaluated. The results showed that about 78 to 99% removal efficiencies of metals were achieved from FA tank, 88 to 99% for LFS tank and 86 to 99% for BA tank. Tank experiment displays huge range of pH changes from acidity to nearly neutral phases when adsorbent was in contact with AMD. Remediation of AMD by using FA showed pH changes from pH 2.12 to 7.09, pH 7.3 for LFS and pH 6.8 for BA within 50 days of operation. From the removal rate, it is found that FA, LFS and BA have different efficiencies of heavy metal removing. The removal of heavy metals by using FA are more efficient to remove Fe, Mn, Cu, Ni and Zn. Meanwhile, LFS sample displayed as an effective adsorbent for treat Pb and Cd in acid mine drainage. The industrial waste used in this study increased and neutralized the pH to control AMD and improve water quality.

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“…The substance that is being removed from liquid phase at the interface is described as adsorbate, while adsorbent is the medium which the adsorbate accumulated with in the form of solid, liquid, or gas phase (Tchobanoglous, 2003). Numerous studies have revealed the usage of limestone in various kinds of water treatment (Aziz et al, 2004;Aziz, Adlan et al 2008;Silva, Cunha et al 2012;. The presence of calcium carbonate (CaCO3) and magnesium carbonate (MgCO3) in limestone enable the adsorbent to remove pollutants such as heavy metals from a water body (Aziz et al, 2004;Aziz et al, 2008;.…”

Section: Introductionmentioning

confidence: 99%

Removal of lindane and Escherichia coli (E.coli) from rainwater using photocatalytic and adsorption treatment processes

2017

Global NEST Journal

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Low concentrations of contaminants in rainwater is the primary benefit of transforming it as an alternative source of drinking water. However, treatment is necessary as rainwater collects contaminants that are persistent in the environment such as lindane and E.coli. The combination of photocatalysis and adsorption processes was chosen as the treatment method in this study. From the results obtained, photocatalysis treatment process was able to degrade lindane in synthetic rainwater under different experimental conditions such as pH, titanium dioxide (TiO2) dosage, and initial concentration. The photodegradation process of lindane followed pseudo kinetic first order. In adsorption process, the adsorbents used in the process are limestone and laterite soil. The performance of these adsorbents are determined by carrying out an equilibrium batch study.The experimental works show that limestone and laterite soil able to remove E.coli at 99%. The optimum dosage of limestone and laterite soil to remove E.coli from synthetic rainwater is 6g and 2g, respectively. The results were then analysed by developing Langmuir and Freundlich isotherm model. Overall, the processes of photocatalysis and adsorption showed a good performance in removing lindane and E.coli from the synthetic rainwater respectively.

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Treatment of high-manganese mine water with limestone and sodium carbonate

Cited by 92 publications

References 37 publications

Carbonation precipitation of manganese from electrolytic manganese residue treated by CO2 with alkaline additives

Carbonation precipitation of manganese from electrolytic manganese residue treated by CO2 with alkaline additives

Remediation of Heavy Metals by using Industrial Waste by Products in Acid Mine Drainage

Removal of lindane and Escherichia coli (E.coli) from rainwater using photocatalytic and adsorption treatment processes

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