Impact of Leachate from Northern Landfill Site in Bloemfontein on Water and Soil Quality: Implications for Water and Food Security

Ololade, Olusola O.; Mavimbela, S. S. W.; Oke, Saheed Adeyinka; Makhadi, Rinae

doi:10.3390/su11154238

Cited by 53 publications

(33 citation statements)

References 34 publications

(44 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In general, the low heavy metals concentration was indicative of the fact that the southern landfill was primarily a dumping site for municipal, domestic and institutional waste not industrial material (MMM, 2016). Similar findings were observed from the Municipal Bloemfontein Northern solid waste-landfills (Ololade et al., 2019).…”

Section: Resultssupporting

confidence: 85%

“…The increase in soil pH with depth was therefore not surprising given that it corroborated with the enrichment of basic forming exchangeable cations with a mean range of 24–2573 mgkg- 1 in the order of abundance followed the trend Ca > Mg > K > Na > S > P and Ca > Mg > Na > K > S > P for the respective surface and subsurface horizons. Ololade et al. (2019) observed similar trends for soil profile horizons of sandy clay loam texture with mean pH of 6.6 from the drainage pathways of the Bloemfontein northern landfill.…”

Section: Resultssupporting

confidence: 61%

“…The general increase in PI with downslope soil profiles point out to gravitational influence involved in the migration of heavy metals especially by surface runoff due to low permeability ( Ks ≤ 25 mm h −1 ) of the Sepane soil form. The unpolluted level of PI supported the notion that the waste disposed at the landfill was of low heavy metal content (Ololade et al., 2019). In addition, to the low heavy metal content of the waste disposed at the landfill the low PI corroborated with the long-term low annual average rainfall (Table 1; 449 mm) which was suggestive of seldom occurrence of surface runoff or overland flow.…”

Section: Resultsmentioning

confidence: 58%

See 2 more Smart Citations

Characterizing landfill leachate migration potential of a semi-arid duplex soil

Mavimbela

Ololade

Tol

et al. 2019

Heliyon

View full text Add to dashboard Cite

Leachate migration from open landfills is an environmental concern of developing cities. This study investigated the base soil-profile pedo-physical and chemical properties of the South African Sepane soil form or referred to as Cutanic Luvisol at the Bloemfontein southern landfill under the Mangaung municipality in the Free State Province. Six soil-profiles pedo-physical, exchangeable-cations and heavy metals concentrations were characterized from in-situ, core and loose soil-samples. The DTPA Test from a 5g air-dried soil extracted heavy metals. The soil profile was characterized by a layered Orthic-A, pedocutanic B- and C-horizons with lower horizons containing mean-total clay of 72%, bulk-density (≥1.5 gcm−3) and saturated hydraulic-conductivity (Ks < 6mmhr-1). Mean soil pH increased with depth from 6.4 to 6.8 along-side exchangeable-cations ranging from 19 to 2573 mgkg-1 in the order Ca > Mg > K > Na > S > P and Ca > Mg > Na > K > S > P for the respective A- and B-horizons. The Mg/K and (Ca + Mg)/K exceeded norm ratios. Soil-profile horizons had respective 44%, 34% and 22% heavy-metal distribution with mean content range of 0.001–37.3 mgkg-1 in the order Mn > Fe > Cr > Zn > Cu > As > Pb > Ni > Cd and Fe > Mn > Cr > Cu > As > Pb > Zn > Ni > Cd for the surface and subsurface horizons, respectively. Heavy-metal mean concentrations were below the norm except for Cr that was higher than 150% from upper horizons and posed serious risk to the near-surface environment. Soil profiles heavy-metal content and pollution-index was unpolluted (0.3–0.4), decreased with depth and reflected no subsurface pollution concerns. This study findings highlighted low internal-migration potential of clay soils and the need for understanding the sources and mode of migration of Cr at the landfill alongside continued monitoring.

show abstract

Section: Resultssupporting

confidence: 85%

Section: Resultssupporting

confidence: 61%

Section: Resultsmentioning

confidence: 58%

See 1 more Smart Citation

Characterizing landfill leachate migration potential of a semi-arid duplex soil

Mavimbela

Ololade

Tol

et al. 2019

Heliyon

View full text Add to dashboard Cite

show abstract

“…In South Africa Ololade, et al [13] investigated the influence of landfill leachate on the surrounding soil and water quality of the Northern landfill in Bloemfontein and the implication on water and food security. Based on the findings they concluded that most of the parameters analysed were above the permissible limit of SANS241, WHO for drinking water, and DWAF specification for irrigation, an indication that the groundwater was unfit for drinking, domestic, and irrigation purposes.…”

Section: Literature Reviewmentioning

confidence: 99%

Impact of Solid Waste Dumpsite on Groundwater Quality in the Neighbouring Communities

Ajibade

Ogungbile

Sridhar

et al. 2019

JAERI

View full text Add to dashboard Cite

Leachate seepages into groundwater aquifer from solid waste dumpsites is likely to release toxic pollutants in groundwater which are hazardous to human health and local ecosystem. A study was conducted on the Physico-chemical parameters of dumpsite leachate and surrounding groundwater from Awotan Solid Waste Dumpsite, in Ibadan, Oyo State. The study was aimed at assessing the impact of the leachate from the dumpsite. The physicochemical analyses of the water samples were carried by standard analytical methods. The results obtained were compared with the WHO (World Health Organization) permissible limit of those parameters in drinking water. The Physico-chemical values obtained for the dumpsite leachate were generally higher than those of groundwater samples, suggesting that a source of contamination could be from the dumpsite leachate. The pH of groundwater samples ranged between 5.03 to 6.94, indicating that the groundwater was acidic. Results of Physico-chemical parameters of dumpsite leachate for Cl-, NO3, TH, Alk, BOD, COD exceeded the WHO limits for drinking water. The BOD and COD of dumpsite leachate and groundwater samples exceeded the WHO limits and hence not safe for drinking. The concentration of Cl- and TH in the groundwater closer to the dumpsite were higher than WHO permissible limits for drinking water. Also, concentrations of the analyzed parameters decreased with increasing distance from the dumpsite, thus implicating leachate seepage from the dumpsite into the groundwater. It is therefore recommended that dumpsites be located away from the human settlements to avoid drinking water contamination and local ecosystem & biodiversity degradation.

show abstract

“…According to Olalade et al, [7], most dumpsite/landfill are built without engineered liners and leachate collection systems so they function without proper leachate collection and treatment facilities thereby promoting leachate migration with adverse effect on the environment and public health.…”

Section: Introductionmentioning

confidence: 99%

Review on effect of dumpsite leachate to the environmental and public health implication

Daniel¹,

Ekeleme²,

Onuigbo³

et al. 2021

GSC Adv. Res. Rev.

View full text Add to dashboard Cite

Over the years, there has been an increase in the rate of environmental pollution due to improper disposal and management of dumpsite waste. Leachate being generated as a result of the moisture associated within dumpsite, amount to contain various microbial pathogens and hazardous substance like cyanides, heavy metals and other chemicals acquired from the dumpsite. This can serve as a risk factor to the environment and public health when there is leachate migration. The migration of leachate into the environment potentially results in the contamination of soil, food products, animals, ground water, surface water and the air environment’ which in turn affect the health of human especially those who consumes from the contaminated products, those who inhabits around the dumpsite and other vulnerable like; young children, waste workers and immunocompromised persons. In Nigeria, though there are municipal waste dumpsites across the nation, these sites are below standard and are not properly managed. Being a great concern to the society, the need for proper design and reconstruction of a well-engineered landfill cannot be over emphasized, among others. This paper will therefore review the environmental and public health implication of dumpsite leachate so as to create more awareness on the need for proper waste management in Nigeria. It concludes by recommending some proper means of waste disposal and management which could be considered for a better health and environment in Nigeria.

show abstract

Impact of Leachate from Northern Landfill Site in Bloemfontein on Water and Soil Quality: Implications for Water and Food Security

Cited by 53 publications

References 34 publications

Characterizing landfill leachate migration potential of a semi-arid duplex soil

Characterizing landfill leachate migration potential of a semi-arid duplex soil

Impact of Solid Waste Dumpsite on Groundwater Quality in the Neighbouring Communities

Review on effect of dumpsite leachate to the environmental and public health implication

Contact Info

Product

Resources

About