In vitro toxicity evaluation of organic extract of landfill soil and its detoxification by indigenous pyrene-degrading Bacillus sp. ISTPY1

Swati, Swati; Ghosh, Pooja; Das, Mihir Tanay; Thakur, Indu Shekhar

doi:10.1016/j.ibiod.2014.03.001

Cited by 28 publications

(11 citation statements)

References 43 publications

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“…According to Magaji [10], soil is in most cases the most polluted part of the ecosystem around landfills, because chemical elements are transported and distributed when water seeps through it. Several pollutants, including heavy metals, polyaromatic hydrocarbons, and pharmaceutical compounds accumulate in the soil [11]. According to Shaikh et al [12], some of these pollutants may be adsorbed on to the soil during their diffusion in the soil.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2019

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Solid waste management in developing cities is a threat to water and food security. The final disposal option for solid wastes is usually landfill sites. Possible contaminants and their impact on surface and groundwater, and soil quality, at the northern solid waste landfill in Bloemfontein city, South Africa, was investigated. Soil samples were analysed for basic cations and heavy metals. A one-point surface leachate, groundwater, and surface water samples were analysed for physicochemical and microbiological parameters. Hydrochemical speciation models were developed using these parameters to determine the influence of the leachate emanating from the landfill on the quality of the water samples. Findings from the study showed that the low metal content in the soil and water samples posed no immediate threat to food and water security. However, most of the other parameters were above the permissible limit of South African National Standard 241 (SANS241) and World Health Organisation) (WHO for drinking water, a(nd the Department of Water Affairs and Forestry (DWAF) specification for irrigation, an indication that the groundwater was unfit for drinking, domestic and irrigation purposes. Metal concentrations in the soil also increased with distance downslope of the landfill along drainage lines. The implementation of a circular economy in Bloemfontein will translate to less pollution and enhance sustainable development.

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Section: Introductionmentioning

confidence: 99%

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

et al. 2019

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“…It was estimated that 0.5-4.5 kg per person per day of solid waste is produced in different regions of the world (Bakare et al, 2005;Swati et al, 2014). The most common ways to manage such waste disposal are landfills and incinerators.…”

Section: Introductionmentioning

confidence: 99%

“…The most common ways to manage such waste disposal are landfills and incinerators. Actually up to 95 % total municipal solid waste (MSW) collected is disposed of in landfills worldwide (El-Fadel et al, 1997;Swati et al, 2014), and landfilling is the major MSW disposal method used in modern cities . Landfills were thought to be the safe disposal method of MSW, but this is true only for properly engineered landfill sites.…”

Section: Introductionmentioning

confidence: 99%

“…Landfills were thought to be the safe disposal method of MSW, but this is true only for properly engineered landfill sites. An engineered landfill site allows final disposal of solid waste in a secure manner by minimizing the impacts on the environment as modern landfills are often lined with layers of absorbent material and sheets of plastic to keep pollutants from leaking into the soil and water (Swati et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

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Soil contamination in landfills: a case study of a landfill in Czech Republic

et al. 2016

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Abstract.A phytotoxicity test was determined to assess ecotoxicity of landfill soil. Sinapis alba L. was used as a bioindicator of heavy metals. Soil samples 1-8, which were taken from the landfill body, edge of the landfill body, and its vicinity meet the limits for heavy metals Co, Cd, Pb, and Zn specified in the applicable legislation. Hg and Mn threshold values are not established in legislation, but values have been determined for the needs of the landfill operator. For heavy metals Cr, Cu, and Ni sample 2 exceeded the threshold values, which attained the highest values of all the samples tested for Cr, Cu, and Ni. For Cr and Ni the values were several times higher than values of the other samples. The second highest values for Cr, Cu, and Ni showed sample 6 and 7. Both samples exceeded the set limits. An increase in plant biomass was observed in plants growing on plates with soil samples, but no changes in appearance, slow growth, or necrotic lesions appeared. Ecotoxicity tests show that tested soils (concentration of 50 %) collected from the landfill body, edge of the landfill body, and its vicinity reach high percentage values of germination capacity of seeds of Sinapis alba L. (101-137 %). At a concentration of 25 %, tested soil samples exhibit lower values of germination capacity -in particular samples 3 to 8 -yet the seed germination capacity in all eight samples of tested soils ranges between 86 and 137 %.

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“…Up to 95% total municipal solid waste collected is disposed of in landfills worldwide. [1][2][3] Currently, there is not any incinerator in Mongolia and wastes are disposed in unlined landfills.…”

Section: Introductionmentioning

confidence: 99%

Microbiological contamination and content of heavy metals in unlined landfill sites of Ulaanbaatar

Byamba-Ochir

Tugjjav

2019

Int J Sci Rep

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Background: The aim of the study was to investigate bacterial and heavy metal pollution in four landfill sites of Ulaanbaatar. Surveyed landfills included closed and currently operating unlined landfills.Methods: In order to sample, we divided each landfill sites into three zones including zone 1: cover soil or in the boundary of the landfill, zone 2: from the boundary of the landfill to hygiene zone (25 м2 to 500 м2 out of cover soil), zone 3: from hygiene zone to settlement areas and compared the pollution. Results: The titre of Cl. perfringens, presence of Salmonella and total bacteria were not significantly different for landfill sites. The titre of E. coli and the titre of Proteus for industrial landfill site were significantly different than other sites. The titre of E. coli and the titre of Proteus for the zone 1 were significantly different than the zone 3. The presence of Salmonella and the total bacteria for the zone 1 was significantly different than the zone 2 and zone 3. The titre of Cl. perfringens was not significantly different for landfill zones. The bacterial indicators were not significantly different for seasons of the year. Content of heavy metals in soil landfills were Pb 0.1-63 mg/kg, Cr 0.4-5124 mg/kg, Ni 3.2-84 mg/kg, Zn 21.7-776 mg/kg, Cd 0.01-2.8 mg/kg.Conclusions: Microbiological contamination and content of heavy metals in closed unlined landfill are not different from currently operating unlined landfills.

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In vitro toxicity evaluation of organic extract of landfill soil and its detoxification by indigenous pyrene-degrading Bacillus sp. ISTPY1

Cited by 28 publications

References 43 publications

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

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

Soil contamination in landfills: a case study of a landfill in Czech Republic

Microbiological contamination and content of heavy metals in unlined landfill sites of Ulaanbaatar

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