Waters of the Djouzami gold mining site (Adamawa, Cameroon): Physicochemical characterization and treatment test by Bana smectite (West, Cameroon)

Ayiwouo, Mouhamed Ngounouno; Leroy, Mambou Ngueyep Luc; Mache, Jacques Richard; Kingni, Sifeu Takougang; Ngounouno, Ismaı̈la

doi:10.1016/j.cscee.2020.100016

Cited by 16 publications

(12 citation statements)

References 12 publications

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“…These lower values explained the fact that there is no exploitation activity. These results reflect those obtained in previous studies (Rakontondrabe et al 2017;Ayiwouo et al 2020).…”

Section: Physicochemical Parameters Of Waterssupporting

confidence: 93%

“…The electrical conductivity increases with the addition of organic matter. These values were higher than those observed in Djouzami gold mining site (Ayiwouo et al 2020). The turbidity values ranged from 345 to 801NTU exceeded the limit recommended by the WHO (WHO 2011).…”

Section: Physicochemical Parameters Of Waterscontrasting

confidence: 52%

“…In Cameroon, very few studies evaluate the impact of gold mining exploitation on the waters and sediments quality (Rakotondrabe et al 2017;Mambou et al 2020a, b). The present study is one of the first with that of Djouzami (Ayiwouo et al 2020) which assess the effect of gold mining activities on water resources in the Adamawa region. The main differences between the present study and that carried out at Djouzami are the type of adsorbent and the number of metals adsorbed.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of the impact of gold mining activities on the waters and sediments of Lom River, Wakaso, Cameroon and the restorative effect of Moringa Oleifera seeds

et al. 2021

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The impact of gold mining activities on the Lom River in Wakaso (Adamawa Cameroon) and the potential of Moringa Oleifera seeds for the removal of pollutants from wastewater is evaluated on this paper. Water samples were collected for physicochemical (hydrogen potential, electrical conductivity, turbidity and suspended solids) and chemical (major ions and heavy metals) analyses. To evaluate the effect of mining activities on waters and sediments, a combination of multivariate statistical analysis (MSA) and methods to assess the sediment quality was used. The restorative effect of Moringa oleifera seeds was studied with the determination of the maximum removal efficiencies and the maximum adsorption capacities. The results of the physicochemical characterization of waters showed that these waters were slightly acidic to slightly basic (6.12–8.12), weakly conductive (185.8–584.1 μS cm−1), turbid (345–801NTU) and had high content of suspended solids (167–700 mg L−1). The average concentrations of studied heavy metals (Ni, Cd, Fe, Mn, As and Hg) in waters exceeded the limits recommended by the World Health Organization (WHO) standards. Physicochemical characterization of sediments revealed that they were acidic to neutral (5.95–6.80) and organic matter (OM) content ranged from 11.11 to 15.78%. The concentrations of studied trace metals (Ni, Cd, Fe, Hg, Mn and As) in sediments were below the limits recommended by the WHO except for Cd and Hg. The study of the capacity of Moringa oleifera seeds to remove pollutants in waters showed that 54% of the electrical conductivity, 80% of turbidity and 94% of suspended solids were reduced. The maximum removal efficiency of 91.66, 92.30 and 24.48 and the maximum adsorption capacity of 2.4, 2.6 and 16.6 mg g−1were observed for Cd (II), Hg (II) and Fe (II), respectively. Thus, the Moringa oleifera seeds which are locally available natural bio-adsorbent exhibit attractive property to treat wastewater.

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“…These lower values explained the fact that there is no exploitation activity. These results reflect those obtained in previous studies (Rakontondrabe et al 2017;Ayiwouo et al 2020).…”

Section: Physicochemical Parameters Of Waterssupporting

confidence: 93%

Section: Physicochemical Parameters Of Waterscontrasting

confidence: 52%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Evaluation of the impact of gold mining activities on the waters and sediments of Lom River, Wakaso, Cameroon and the restorative effect of Moringa Oleifera seeds

et al. 2021

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“…Secondly, this is due to the hydrolysis of the pyrite which releases iron. Higher concentrations of iron are also observed in other gold zones [ 10 , 11 ].…”

Section: Resultsmentioning

confidence: 90%

“…In Cameroon, very few studies have been carried out on the physicochemical characterization of the waters and sediments of a mining operation. Some authors [ 3 , 10 , 11 ] studied the impacts of gold mining exploitation on the surface water quality.…”

Section: Introductionmentioning

confidence: 99%

Physicochemical Characterization of Mining Waste from the Betare-Oya Gold Area (East Cameroon) and an Adsorption Test by Sabga Smectite (North-West Cameroon)

et al. 2020

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This paper, firstly, characterizes the mining waste of the Betare-Oya gold area (East Cameroon). Surface waters are sampled and characterized physically (pH, electrical conductivity, turbidity, and suspended solids) and chemically by the determination of trace metals (Cu, Zn, Ni, Mn, Fe, Cr, As, and Pb). The concentrations of heavy metals in sediment samples are determined by X-ray Fluorescence Spectrometry (XRF) analysis. The statistical analysis tool is used to determine the existing correlation between the different physicochemical parameters. Secondly, an adsorption test for heavy metals determined is carried out on smectic clay of Sabga (North-West Cameroon) at ambient temperature. The results of physicochemical characterization of water samples reveal that waters of this gold mining zone are slightly acidic to neutral (6.3 pH < 7.1), mineralized (18.54 EC < 43 μs.cm−1), turbid (60 SS < 237.67 NTU), and polluted by suspended solids (50.5 < SS < 666.6 mg L−1).The determination of heavy metals in water samples shows that manganese, iron, arsenic, and lead concentrations are above the World Health Organization (WHO) limits. This indicates pollution. High concentrations of heavy metals as Cu, Ni, Mn, Fe, and Cr are observed in sediment samples. The correlation analysis indicates high correlations between turbidity and suspended solids; cadmium and lead in water samples; and copper and iron in sediment samples. The adsorption test reveals that the maximum percentage removal is 60, 89, 55, −89.74, and 100% for Cu, Zn, Mn, Fe, and Pb, respectively, after adding 0.5 g of Sabga smectic clay. This clay has a good potential adsorption of lead, zinc, manganese, and copper. However, the operating conditions favored desorption of iron.

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Comprehensive Water Quality and Heavy Metal Pollution Assessment of the Lom River in Bekao Gold Mining Sites (Adamawa-Cameroon) Using the Pollution Indices and Multivariate Statistical Approach

Sayom,

Mefomdjo,

Tarkwa

et al. 2023

Water Air Soil Pollut

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Waters of the Djouzami gold mining site (Adamawa, Cameroon): Physicochemical characterization and treatment test by Bana smectite (West, Cameroon)

Cited by 16 publications

References 12 publications

Evaluation of the impact of gold mining activities on the waters and sediments of Lom River, Wakaso, Cameroon and the restorative effect of Moringa Oleifera seeds

Evaluation of the impact of gold mining activities on the waters and sediments of Lom River, Wakaso, Cameroon and the restorative effect of Moringa Oleifera seeds

Physicochemical Characterization of Mining Waste from the Betare-Oya Gold Area (East Cameroon) and an Adsorption Test by Sabga Smectite (North-West Cameroon)

Comprehensive Water Quality and Heavy Metal Pollution Assessment of the Lom River in Bekao Gold Mining Sites (Adamawa-Cameroon) Using the Pollution Indices and Multivariate Statistical Approach

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