Integrated acid mine drainage treatment using Mg(OH) 2 or Mg(HCO 3 ) 2 and Ca(OH) 2 : Implications for separate removal of metals and sulphate

Akinwekomi, Vhahangwele; Kefeni, Kebede K.; Maree, J. P.; Msagati, Titus A.M.

doi:10.1016/j.minpro.2016.08.009

Cited by 33 publications

(4 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The antagonistic effects of magnesium and aluminum and resulting reduction of Al-induced oxidative stress in plants have been reported in many studies [ 83 , 84 , 85 ]. Notably, brucite can effectively remove metal ions, arsenic, and organic pollution [ 86 , 87 , 88 , 89 ]. The sorption properties of opoka with respect to heavy metals, phosphates, and other substances have been studied as well [ 90 , 91 ].…”

Section: Resultsmentioning

confidence: 99%

Influence of Reagents on Qualitative Indicators of Artificial Anti-Deflationary Phytocenosis on Waste from a Rare Earth Tailing Facility

Krasavtseva

Maksimova

Макаров

2023

Toxics

View full text Add to dashboard Cite

This paper presents an assessment of the effect of various reagents on the qualitative indicators of anti-deflationary single-species sowing phytocenosis on enrichment waste from rare earth ores. It has been established that tailings of loparite ores are not suitable for biological reclamation due to low values of hygroscopic moisture (0.54–2.85%) and clay particles (17.6 ± 0.6%) and high content of bioavailable forms of aluminum (504 ± 14 mg/kg). Seeds of red fescue (Festuca rubra L.) were grown on the tailings of loparite ore enrichment with the addition of opoka (O), brucite (B), and vermiculite (V). The quality of the seed cenosis was assessed by the dry biomass of the above-ground parts of the plants and the plant height. A positive effect (one-way ANOVA followed by Tukey’s HSD test (p < 0.05 and p < 0.01)) of the considered combinations of reagents on the growth of above-ground biomass from 31.5% (V) to 70.3 (V + O), 82.4% (V + B), and 81.8% (V + O+B) and on plant height from 53.8% (V) up to 78.6 (V + O), 83.8% (V + B), and 75.4% (V + O+B) was revealed. The use of a combination of V + O and V + B reagents made it possible to significantly reduce the content of Al (by 19.0% and 52.8%), Sr (by 16.5% and 12.9%), La (by 65.2% and 40.6%), and Ce (by 66.8% and 41.9%) in the aerial part of the sowing phytocenosis compared to control. The results obtained here can become the basis for development of a combined sorption technology for the reclamation of technogenically disturbed lands.

show abstract

Section: Resultsmentioning

confidence: 99%

Influence of Reagents on Qualitative Indicators of Artificial Anti-Deflationary Phytocenosis on Waste from a Rare Earth Tailing Facility

Krasavtseva

Maksimova

Макаров

2023

Toxics

View full text Add to dashboard Cite

show abstract

“…The main functional groups providing binding sites for sulfate uptake onto the biosorbent are the amine and quaternary ammonium groups. Brucite can remove metal ions, arsenic, and organic pollution effectively (Akinwekomi et al 2016;Bochkarev and Pushkaryova 2009;Bochkarev et al 2010Bochkarev et al , 2014Makarov et al 2009;Masliy et al 2012;Orekhova et al 2021;Pushkaryova 1999;Sulaiman et al 2018). For both, the removal mechanism is based on the principle of ion exchange.…”

Section: Introductionmentioning

confidence: 99%

Removal of Sulfate and Metals from Wastewater of a Mining Enterprise by a Dual Sorbent System: A Case Study

et al. 2023

View full text Add to dashboard Cite

This paper presents the results of wastewater treatment at a mining enterprise developing a complex ore deposit in the Murmansk region, Russia. The main pollutants are sulfate, manganese, and strontium. For this complex wastewater treatment, a two-stage scheme was proposed and tested using two sorbents (at a pH of 6): an aminated peat biosorbent to remove sulfate and a commercial sorbent based on the mineral brucite to remove metals. Optimal conditions were established for purifying the wastewater of sulfate and manganese and strontium ions to the level of maximum available concentrations in water bodies for fishery purposes.

show abstract

“…Generation and release of acid mine drainage (AMD) containing elevated concentrations of metals from the mine waste induces an environmental problem on a global scale, and some kind of method, active or passive treatment, is required for the mine drainage [10]. The active treatment methods use neutralizing agents to raise the pH up to the effluent water quality standards [11][12][13][14][15]. Mine water originating from the active or closed copper mines contains copper ions sometimes in a considerable concentration usually associated with an equivalent or even two times higher concentration of Fe 2+ /Fe 3+ ions as a consequence of bacterial leaching the sulfide copper and iron minerals.…”

Section: Introductionmentioning

confidence: 99%

New Approach of Metals Removal from Acid Mine Drainage

et al. 2020

View full text Add to dashboard Cite

The possibility of metal removal from the real acid mine drainage (AMD) in the area of copper ore mines in the southeast Serbia, was investigated through a combination of neutralization and adsorption methods. This approach of metal removal from AMD includes a two-step neutralization method in the first phase, aiming to separate metals as sludge. The results of laboratory test revealed that more than 99 mass % of Fe is removed up to pH 4 and more than 99 mass % of Cu up to pH 7. Based on the results obtained in laboratory conditions, a test on a semi industrial plant was carried out. The two-step neutralization separately removed Fe and Cu at pH 4 and 7, respectively. Especially, the obtained sludge at pH 7 included 1.24 mass % of Cu, much higher than usual Cu ore. Chitosan was applied for dissolved Mn removal from treated AMD. After 24 h incubation, 70 mass % of Mn is removed from the treated AMD at pH 7.4. Mn concentration was reduced from approx. 35 mg L−1 to 5 mg L−1. These results have indicated that a combination of neutralization and adsorption methods could be used effectively for metal removal from real AMD.

show abstract

Integrated acid mine drainage treatment using Mg(OH) 2 or Mg(HCO 3 ) 2 and Ca(OH) 2 : Implications for separate removal of metals and sulphate

Cited by 33 publications

References 28 publications

Influence of Reagents on Qualitative Indicators of Artificial Anti-Deflationary Phytocenosis on Waste from a Rare Earth Tailing Facility

Influence of Reagents on Qualitative Indicators of Artificial Anti-Deflationary Phytocenosis on Waste from a Rare Earth Tailing Facility

Removal of Sulfate and Metals from Wastewater of a Mining Enterprise by a Dual Sorbent System: A Case Study

New Approach of Metals Removal from Acid Mine Drainage

Contact Info

Product

Resources

About