Heavy metal pollution in leachates and its impacts on the quality of groundwater resources around Iringa municipal solid waste dumpsite

Sanga, Victor Fanuel; Fabian, Christina; Kimbokota, Fikira

doi:10.1007/s11356-022-22760-z

Cited by 24 publications

(5 citation statements)

References 39 publications

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“…Regarding the leachate characterization analysis presented in Table 1, the leachate sample from JSL had an apparent black color accompanied by a slight ammoniacal smell, but raw leachate samples from AHL, BBL, and TBL showed a brownish color (clearer) along with a stronger ammonia smell, especially AHL. Although color may not be a principal factor in quantifying the degree of toxicity of leachate, it can reflect the dissolved constituents of waste [22,23]. In this study, the variations observed in the selected landfill sites were closely associated with their operational status.…”

Section: Characterization Of Leachatementioning

confidence: 80%

Remediation of Leachate-Metal-Contaminated Soil Using Selected Bacterial Consortia

Emenike,

Omo-Okoro,

Pariatamby

et al. 2024

Soil Systems

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Approximately 95% of urban solid waste worldwide is disposed of in landfills. About 14 million metric tonnes of this municipal solid waste are disposed of in landfills every year in Malaysia, illustrating the importance of landfills. Landfill leachate is a liquid that is generated when precipitation percolates through waste disposed of in a landfill. High concentrations of heavy metal(loid)s, organic matter that has been dissolved and/or suspended, and inorganic substances, including phosphorus, ammonium, and sulphate, are present in landfill leachate. Globally, there is an urgent need for efficient remediation strategies for leachate-metal-contaminated soils. The present study expatiates on the physicochemical conditions and heavy metal(loid)s’ concentrations present in leachate samples obtained from four landfills in Malaysia, namely, Air Hitam Sanitary Landfill, Jeram Sanitary landfill, Bukit Beruntung landfill, and Taman Beringin Landfill, and explores bioaugmentation for the remediation of leachate-metal-contaminated soil. Leachate samples (replicates) were taken from all four landfills. Heavy metal(loids) in the collected leachate samples were quantified using inductively coupled plasma mass spectrometry. The microbial strains used for bioaugmentation were isolated from the soil sample collected from Taman Beringin Landfill. X-ray fluorescence spectrometry was used to analyze heavy metal(loid)s in the soil, prior to the isolation of microbes. The results of the present study show that the treatments inoculated with the isolated bacteria had greater potential for bioremediation than the control experiment. Of the nine isolated microbial strains, the treatment regimen involving only three strains (all Gram-positive bacteria) exhibited the highest removal efficiency for heavy metal(loid)s, as observed from most of the results. With regard to new findings, a significant outcome from the present study is that selectively blended microbial species are more effective in the remediation of leachate-metal-contaminated soil, in comparison to a treatment containing a higher number of microbial species and therefore increased diversity. Although the leachate and soil samples were collected from Malaysia, there is a global appeal for the bioremediation strategy applied in this study.

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Section: Characterization Of Leachatementioning

confidence: 80%

Remediation of Leachate-Metal-Contaminated Soil Using Selected Bacterial Consortia

Emenike,

Omo-Okoro,

Pariatamby

et al. 2024

Soil Systems

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“…In addition, the dissolubility of heavy metals is directly affected by the pH of the medium, where it is favored by an acid pH and diminishes with an alkaline pH (Bilgili et al, 2007). However, fluctuations in concentrations over the short term (a few months) are due to the variable infiltration of rainwater (leaching).Several studies carried out on the characterization of leachates have confirmed the presence of certain mineral micropollutants ( Mokhtaria et al, 2007), (Toklo et al, 2015), (Sanga et al,2023).…”

Section: Heavy Metals (Fe Cr Zn Pb and Cd)mentioning

confidence: 98%

Monitoring of the Fluctuation of the Pollutant Load of Leachate Rejected in Environment. Study in the Northeast of Algeria

2024

AEES

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In order to model the environmental impact of leachate produced at the engineered landfill center (ELC) of Bouguerguer, Guelma located in the north east of Algeria. A physico-chemical characterization during 2020, was carried out in order to estimate this impact. For this purpose fourteen parameters have been studied which are, In vivo: pH, conductivity, Salinity. In vitro: Organic element contents (BOD5, COD); Heavy metal contents (Fe, Zn, Pb, Cd and Cr); The contents of nutrient elements (Nitrate, Nitrite, Ammonium and Suspended matter). The results obtained show that the leachates studied, have the following characteristics: A basic pH of 8,85 , Suspended matter a fairly large load with 5397,92 mg/L. The organic load interpreted by a COD that reaches an average 1603, 75 mg O2/L and a BOD5 that reaches an average of 778,54 mg O2/L, which strongly justifies the presence of organic pollution. The mineral pollution is also present, translated by a high electrical conductivity which reaches an average value of 33,38 mS/cm, Nitrates and nitrites average 15,68 and 17,93 mg/l respectively. The leachates are also characterized by a high content of Fr, Zn, Pb, Cd and Cr with an average of (42,70 ; 10,44 ; 8,27 ; 4,37 and 5,97 mg/l) respectively. Noting that the results obtained constitute the first characterization of leachates in this landfill and thus provide a database for future research.

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“…investigated heavy metal concentrations in the groundwater of Oshodi/Isolo/Ilasamaja industrial estate in Lagos Nigeria, finding elevated levels of heavy metals such as lead, chromium, cadmium, mercury, and arsenic concentrations exceeding WHO and USEPA limits. Sanga et al (2023) investigated heavy metal pollution in leachates and its impact on groundwater quality around the Iringa municipal solid waste dumpsite, finding concentrations of heavy metals exceeding permissible limits. Ayejoto and Egbueri (2023) assessed the concentrations of heavy metals (Pb, Cd, Cu and Fe) in urban groundwater in Nnewi and Awka regions of Southeast Nigeria, finding levels exceeding permissible limits in all samples.…”

Section: Distribution Of Heavy Metals In the Nigerian Environmentmentioning

confidence: 99%

Addressing Heavy Metal Pollution in Nigeria: Evaluating Policies, Assessing Impacts, and Enhancing Remediation Strategies

Ogbeide,

Henry

2024

jasem

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Heavy metal pollution is a significant environmental concern in Nigeria, posing risks to ecological integrity and public health. This study aims to evaluate the existing policies and regulations addressing heavy metal pollution, assess their effectiveness, and propose recommendations for improvement. The analysis reveals that while Nigeria has established a robust legislative framework, challenges in implementation, enforcement, and funding persist. The impact of reducing heavy metal pollution is influenced by resource constraints, limited capacity, and the need for stronger collaboration between regulatory bodies and industries. Community involvement and education play a crucial role in managing heavy metal pollution, emphasizing the importance of awareness, sustainable practices, and local engagement. Remediation strategies, such as bioremediation and phytoremediation, offer potential solutions. However, gaps in knowledge and research exist, calling for long-term monitoring, ecological impact assessments, and comprehensive health risk assessments. To enhance the effectiveness of current policies, periodic reviews, increased funding, and community-based monitoring programs are recommended. By addressing these gaps and implementing the proposed recommendations, Nigeria can make significant strides towards mitigating heavy metal pollution and achieving environmental sustainability.

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Heavy metal pollution in leachates and its impacts on the quality of groundwater resources around Iringa municipal solid waste dumpsite

Cited by 24 publications

References 39 publications

Remediation of Leachate-Metal-Contaminated Soil Using Selected Bacterial Consortia

Remediation of Leachate-Metal-Contaminated Soil Using Selected Bacterial Consortia

Monitoring of the Fluctuation of the Pollutant Load of Leachate Rejected in Environment. Study in the Northeast of Algeria

Addressing Heavy Metal Pollution in Nigeria: Evaluating Policies, Assessing Impacts, and Enhancing Remediation Strategies

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