Passive treatment of acid mine drainage from the Sidi-Kamber mine wastes (Mediterranean coastline, Algeria) using neighbouring phosphate material from the Djebel Onk mine

Merchichi, Amira; Hamou, Malek Ould; Edahbi, Mohamed; Bobocioiu, Ema; Neculita, Carmen Mihaela; Benzaazoua, Mostafa

doi:10.1016/j.scitotenv.2021.151002

Cited by 10 publications

(7 citation statements)

References 59 publications

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“…In the extensive literature about AMD, both actual and synthetic AMD generally contain large amounts of iron (Fe) and manganese (Mn) elements. The concentration range of Fe is generally from tens to hundreds of milligrams per liter, while the concentration of Mn is tens of milligrams per liter [11,18,23,28]. The AMD in this study had an iron concentration of up to 77.54 g/L and a Mn concentration of up to 621.29 mg/L, both of which are much higher than those in general AMD.…”

Section: Water Quality Of the Raw Acid Mine Drainagementioning

confidence: 62%

“…Active treatment methods commonly include neutralization, precipitation, adsorption, ion exchange, membrane separation, and electrochemical approach [20][21][22][23][24]. Passive treatment methods include constructed wetlands, limestone drains and channels, permeable reactive barriers, and sulfate reduction bioreactors [25][26][27][28][29]. Each of these treatment methods has its unique advantages and disadvantages when dealing with AMD.…”

Section: Introductionmentioning

confidence: 99%

“…However, active treatments require continuous chemical addition and secondary pollutant treatment [12]. The advantages of passive treatments are their low cost of implementation, operation, maintenance, and management [28]. Their disadvantages are their low acid load, prolonged process time, poor effectivity during winter, unstable water output, and being less efficient over time [30].…”

Section: Introductionmentioning

confidence: 99%

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Alkaline Chemical Neutralization to Treat Acid Mine Drainage with High Concentrations of Iron and Manganese

Zhao,

Zhang,

2024

Water

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Due to its high acidity and toxic metal content, acid mine drainage (AMD) needs to be properly treated before being discharged into the environment. This study took the AMD collected from one specific mine in China as a sample and investigated the treatment methodology for AMD. The water quality of the AMD was measured, and the sample was treated with caustic soda (NaOH) and shell powder (one kind of conventional neutralizer, mainly composed of CaCO3) by the neutralization method. The results show that the AMD has a relatively low pH (2.16) and contains high concentrations of Fe (77.54 g/L), Mn (621.29 mg/L), Cu (6.54 mg/L), Ca (12.39 mg/L), and Mg (55.04 mg/L). NaOH was an effective neutralizer to treat the AMD and performed much better than shell powder. Various metals were precipitated, in the order of Fe(III), Cu, Fe(II), Mn, Ca, and Mg. The metal removal mechanisms included precipitation, adsorption, and co-precipitation. The optimal reaction conditions were the reaction duration was selected as 5 min and the mass ratio of NaOH to AMD was 0.16:1 (w:v). By this stage, the pH rapidly increased from 2.16 to 8.53 during AMD-NaOH interactions and various metals were efficiently removed (from 86.71% to 99.99%) by NaOH. The residual mass concentrations of Fe, Mn, Cu, Ca, and Mg after the treatment were 1.52, 1.77, 0.10, 1.65, and 2.17 mg/L, respectively. These data revealed that NaOH was a good treatment regent for this kind of AMD, based on the discharge criteria of China (GB28661 2012). Also, the shell powder was a helpful neutralizer for pH adjustment and copper removal. This neutralization method has the advantages of convenient operation, high speed, good effect, simple equipment, and low infrastructure cost. In addition, the resulting neutralized residue is a valuable and high-quality raw material, which can be used in metal smelting and separation.

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Section: Water Quality Of the Raw Acid Mine Drainagementioning

confidence: 62%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Alkaline Chemical Neutralization to Treat Acid Mine Drainage with High Concentrations of Iron and Manganese

Zhao,

Zhang,

2024

Water

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“…Phosphatic waste rock was mainly composed of carbonate minerals (dolomite and calcite), quartz, and ilmenite, whereas the minerals present in the raw phosphates include dolomite, calcite and fluorapatite (Table . II). The tailings had similar mineralogical compositions as raw phosphates [31].…”

Section: Phosphate Amendmentsmentioning

confidence: 92%

“…Phosphate ore (RLGP) and phosphate mine tailings (PMT) had high levels of CaO (45.2%), P2O5 (28.8%) and SiO2 (4.0%). Cobalt, Zinc, Barium and lead are also present at low concentrations [31].…”

Section: Phosphate Amendmentsmentioning

confidence: 99%

Phosphate Amendments for the Inhibition of Acid Mine Drainage Generated from Sidi Kamber Tailings Facility

Merchichi

Hamou

Benzaazoua

et al. 2022

ENPESJ

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The aims of this paper was to evaluate the efficiency of phosphates product and by-products from the Djebel Onk mine for the control of acidic mine drainage generated by exposure of Sidi Kamber mine tailings to climatic conditions. Kinetic tests in humidity cells were carried out according to the modified ASTM standard, was used to invistigate the geochemical behaviour of the Sidi Kamber tailings mixed with phosphate materials (phosphatic limestone wastes, raw low grade phosphate ore and phosphate mine tailings) after being characterized. All amendment compositions led to an increase of the pH of the leachate from approximately 3 to circum-neutral values. Humidity cells experiments indicated that the materials were adequate to immobilize Pb, Zn, Cu and Fe by about 99% and prevent their release through the tailings. The tests have also shown that the metals concentrations within the leachate are lower than the limits allowed by Algerian legislation for industrial liquid effluents. Among the tested material amendments, PLW was more effective than other products in immobilizing metals. The results are most probably related to their Ca-carbonate content and/or adsorption capacity.

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In-Situ Remedies

Chidiac,

Bleasdale-Pollowy,

Holmes

et al. 2023

SpringerBriefs in Applied Sciences and Technology

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Passive treatment of acid mine drainage from the Sidi-Kamber mine wastes (Mediterranean coastline, Algeria) using neighbouring phosphate material from the Djebel Onk mine

Cited by 10 publications

References 59 publications

Alkaline Chemical Neutralization to Treat Acid Mine Drainage with High Concentrations of Iron and Manganese

Alkaline Chemical Neutralization to Treat Acid Mine Drainage with High Concentrations of Iron and Manganese

Phosphate Amendments for the Inhibition of Acid Mine Drainage Generated from Sidi Kamber Tailings Facility

In-Situ Remedies

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