Long term treated wastewater impacts and source identification of heavy metals in semi-arid soils of Central Botswana

Ndiye M. Kebonye, Peter N. Eze, Felicia O. Akinyemi

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Industrial and domestic wastewater is a potential contaminant capable of degrading the quality of the soil environments, if not properly treated. This study reports the 20years cumulative effects of treated wastewater discharge on heavy metal (HMs) concentration in the proximal environment of Palapye Wastewater Treatment Plant (PWTP), Central Botswana. Soil samples were collected from eight sites: four along the treated wastewater channel and four on an adjacent well-drained channel (control). Selected physico-chemical properties of the soils were determined using routine laboratory procedures and rapid HM concentrations with portable XRF. Results showed that HM concentrations in the two drainage classes did not vary significantly (p>0.05). There was strong correlation between organic matter (OM) and Fe (R2=0.896, p
Original languageEnglish
Pages (from-to)200-214
Number of pages15
JournalGeoderma Regional
Volume10
DOIs
Publication statusPublished - 2017

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semiarid soils
Botswana
wastewater
heavy metals
heavy metal
soil
edaphic factors
soil chemical properties
wastewater treatment
X-ray fluorescence
chemical property
drainage
physicochemical properties
soil organic matter
soil sampling
well
organic matter
pollutant

Cite this

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abstract = "Industrial and domestic wastewater is a potential contaminant capable of degrading the quality of the soil environments, if not properly treated. This study reports the 20years cumulative effects of treated wastewater discharge on heavy metal (HMs) concentration in the proximal environment of Palapye Wastewater Treatment Plant (PWTP), Central Botswana. Soil samples were collected from eight sites: four along the treated wastewater channel and four on an adjacent well-drained channel (control). Selected physico-chemical properties of the soils were determined using routine laboratory procedures and rapid HM concentrations with portable XRF. Results showed that HM concentrations in the two drainage classes did not vary significantly (p>0.05). There was strong correlation between organic matter (OM) and Fe (R2=0.896, p",
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Long term treated wastewater impacts and source identification of heavy metals in semi-arid soils of Central Botswana. / Kebonye, Ndiye M.; Eze, Peter N.; Akinyemi, Felicia O.

In: Geoderma Regional, Vol. 10, 2017, p. 200-214.

Research output: Contribution to journalArticle

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