Metal enrichment in the groundwater of the arid environment in South Africa

Abiye, Tamiru; Leshomo, Joyce

doi:10.1007/s12665-014-3356-9

Cited by 13 publications

(6 citation statements)

References 18 publications

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“…The high concentrations of metals in groundwater may be due to infiltration and percolation of acidic mine drainage, but also to natural causes. The main geochemical processes are often oxidation reactions, leaching, evaporation, and other interactions between host rocks and water [5]. Whereas arsenic, of which the levels are often higher than the corresponding standard limit (Figure 6), may be present in sulfide ores associated with other metals (pyrite, arsenopyrite, and chalcopyrite) such as copper, lead, silver, and gold.…”

Section: Inorganic Chemicals Macropollutantsmentioning

confidence: 99%

“…In the case of small rural communities, it may be very expensive to guarantee safe water by means of small decentralized water treatment plants (including investment, and operational and maintenance costs) fed by surface water or groundwater. Pollution of source water may be due to many different natural and anthropic causes, including: geochemical processes, heavy rain, flooding, release of untreated wastewater (generated within the rural communities) and industrial effluents, manure spreading on soil, land runoff, acid mine drainage, and infiltration-percolation of water from polluted sites [2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…Map showing the places where the reviewed investigations took place, together with the type of water analyzed (surface water or groundwater), the group of monitored pollutants (macropollutants/inorganic chemicals/PAHs/microorganisms or micropollutants) and the corresponding references[2,3,5,.…”

mentioning

confidence: 99%

“…Observed concentrations (circles) inorganic chemical and macropollutants in groundwater in the reviewed studies referring to South Africa and the corresponding limits (red dashes) set by SANS-241 (red line) for drinking water. Data from:[5,[21][22][23]35,52,53,57].Water 2020, 12, x FOR PEER REVIEW 11 of 20…”

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confidence: 99%

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Surface Water and Groundwater Quality in South Africa and Mozambique—Analysis of the Most Critical Pollutants for Drinking Purposes and Challenges in Water Treatment Selection

Verlicchi

Grillini

2020

Water

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According to a recent report by the World Health Organization (WHO), the countries which still have limited access to water for drinking purposes are mainly those in the Sub-Saharan region. In this context, the current study provides an overview of the quality of surface water and groundwater in rural and peri-urban areas of the Republic of South Africa (RSA) and Mozambique (MZ) in terms of concentrations of conventional pollutants, inorganic chemicals, microorganisms, and micropollutants. Their values were compared with the drinking water standards available for the two countries. Regarding surface water, it was found that microorganisms occur at high concentrations; nickel (RSA) and boron (MZ) are other critical parameters. Regarding groundwater, arsenic and lead (RSA) and boron, sodium, and chloride (MZ) are the main critical substances. With regard to micropollutants, their surface water concentrations are much higher than those in European rivers. The highest values were for ibuprofen, acetylsalicylic acid, clozapine, and estriol. Suitable treatment is necessary to produce safe water depending on the main critical pollutants but, at the same time, action should be taken to improve wastewater treatment in rural areas to improve and safeguard surface water bodies and groundwater which are sources for drinking needs.

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Section: Inorganic Chemicals Macropollutantsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Surface Water and Groundwater Quality in South Africa and Mozambique—Analysis of the Most Critical Pollutants for Drinking Purposes and Challenges in Water Treatment Selection

Verlicchi

Grillini

2020

Water

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“…Observed concentrations (circles) inorganic chemical (A) and macropollutants (B) in groundwater in the reviewed studies referring to South Africa and the corresponding limits (red dashes) set by SANS-241 (red line) for drinking water. Data from:[32][33][34][35][36][37][38][39].…”

mentioning

confidence: 99%

Surface and Groundwater Quality in South African Area—Analysis of the Most Critical Pollutants for Drinking Purposes

Verlicchi

Grillini

2019

The 4th International Electronic Conference on Water Sciences

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According to a recent report by WHO, the countries which still have a limited access to water for drinking purposes are mainly those in the Sub-Saharan region. (Potential) water sources for drinking needs may contain different contaminants. In this context, the current study consists in an overview of the quality of surface water and groundwater in the Republic of South Africa (RSA) and Mozambique (MZ) and provides the variability ranges of the concentrations of the main pollutants in the two countries. Chemical and physical characteristics, concentrations of macropollutants, inorganic compounds (metals) and selected microorganisms were collected for surface water and groundwater and compared with the standards for drinking water set in the two countries. It was found that in surface water, microorganisms were always at very high concentrations. In addition, nickel (in RSA) and boron and chlorine (in MZ) were the most critical compounds. It emerged that in groundwater, arsenic, lead and chlorine (in RSA) and boron, sodium and chlorine (in MZ) were the main critical pollutants. Adequate treatments in the construction of new drinking water plants in rural areas should be selected on the basis of these most critical compounds and their observed variability over time.

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Natural radioactivity and metal concentration in the Thyspunt area, Eastern Cape Province, South Africa

Mohuba

Abiye

Demlie

et al. 2022

Environ Monit Assess

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Metal enrichment in the groundwater of the arid environment in South Africa

Cited by 13 publications

References 18 publications

Surface Water and Groundwater Quality in South Africa and Mozambique—Analysis of the Most Critical Pollutants for Drinking Purposes and Challenges in Water Treatment Selection

Surface Water and Groundwater Quality in South Africa and Mozambique—Analysis of the Most Critical Pollutants for Drinking Purposes and Challenges in Water Treatment Selection

Surface and Groundwater Quality in South African Area—Analysis of the Most Critical Pollutants for Drinking Purposes

Natural radioactivity and metal concentration in the Thyspunt area, Eastern Cape Province, South Africa

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