Assessment of the physicochemical parameters and heavy metals toxicity of leachates from municipal solid waste open dumpsite

Ogundiran, Olusegun O.; Afolabi, T. Adeniyi

doi:10.1007/bf03326018

Cited by 94 publications

(58 citation statements)

References 23 publications

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“…Open dumpsites present a number of risks to soils due to its propensity to generate toxic chemicals, pathogens, and alter the natural environment of the soil (Amuno 2011). The source of heavy metals is usually hazardous waste (paint, varnishes, batteries, expired pharmaceuticals, insecticides), ashes coming from the heating systems as well as the organic fraction which has a substantial accumulation ability (Longe and Enekwechi 2007;Tengrui et al 2007;Ogundiran and Afolabi 2008;Islam et al 2012). Uncontrolled landfills are also an important epidemiological risk due to the possibility of pathogenic bacteria being deposited waste.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the content of heavy metals and potential pathogenic microorganisms in soil under illegal dumping sites

2016

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The aim of the study was the assessment of the environmental contamination of soil by heavy metals and microorganisms within the uncontrolled landfill dumps and the impact of anthropogenic sources on the activity of selected soil surface horizons. Some physicochemical properties were determined according to commonly used procedures in soil science laboratories. The total of heavy metals concentration was assessed according to Crock and Severson and forms available according to Lindsay and Norvell. The total contents and mobile forms were determined by atomic absorption spectrophotometry. As part of the microbiological tests, potentially pathogenic evidence of bacteria was found indicating fecal contamination of the soil (E. coli and other coliform bacilli, Salmonella spp., and Enterococcus spp.). Quantitative analyses were carried out based on the calculation of the most probable number of microorganisms (MPN method). The activity of selected redox and hydrolases enzymes: the activity of dehydrogenases with the Thalmann method, catalase with the Johnson and Temple method, alkaline and acid phosphatase with the method of Tabatabai and Bremner. It was concluded that depending on the composition of the dump, the physicochemical properties of the soil were changed, too. Uncontrolled landfills significantly affected the increase or decrease in the pH of the tested soil and the organic content of the tested soil. The waste stored at the site affected the contamination of the soil by heavy metals to varying degrees. The results show that the most dangerous bacteria exist in the soil under the C landfill and this is where the greatest risk of soil contamination exists. The highest amount of selected enzymes activity was observed in soils under illegal C dumping sites. In the soil sourced from A and B landfills, the enzyme inhibition occurred which was linked to the lowering of the organic carbon. The results of the principal component analysis demonstrated that the content of heavy metals and the activity of enzymes are the indicators of anthropogenic pollution, whereas granulometric composition (sand and silt) is mainly associated with the natural environment.

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Section: Introductionmentioning

confidence: 99%

Assessment of the content of heavy metals and potential pathogenic microorganisms in soil under illegal dumping sites

2016

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“…Waste management in general has emerged as a major problem for urban cities (Aina et al, 2009). Adopting inappropriate mean in the management of wastes could result in environmental pollution (Giri et al, 2007;Ogundiran and Afolabi, 2008).…”

Section: Introductionmentioning

confidence: 99%

Heavy metal characterization of waste portable rechargeable batteries used in mobile phones

Nnorom

Osibanjo

2009

Int. J. Environ. Sci. Technol.

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Ten brands of spent portable rechargeable batteries used in mobile phones (lithium-ion and nickel metal hydride) were collected and disassembled and the battery electrode and printed wiring board prepared using the EPA Method 3050B. The metal concentrations were determined by atomic absorption spectrometry. The mean (± standard deviation) concentrations and range of cobalt, chromium, nickel and cadmium in the battery electrodes were 361284±32281mg/kg (range 20870-575330 mg/kg); 25.3 ± 4.6 mg/kg (7.9-149 mg/kg); 75272 ± 14630 mg/kg (3589-266607 mg/kg) and 2.8 ± 0.6 mg/kg (0.2-16.3 mg/kg), respectively. Similarly, the mean values of cobalt, chromium, nickel and cadmium in the PWB were 564 ± 165 mg/kg (56.1-4068 mg/kg); 28.1 ± 4.0 mg/kg (ND-97.2 mg/kg); 735 ± 188 mg/kg (22.7-2727 mg/kg) and 1.8 ± 0.3 mg/kg (ND-7.2 mg/kg), respectively. The Li-ion battery electrodes contained significantly higher levels of cobalt (p < 0.01) whereas, the NiMH battery contained significantly higher nickel (P < 0.01). All the results for the cobalt and nickel levels in the battery electrodes exceeded the toxicity threshold limit concentration used in the toxicity characterization of solid wastes (cobalt, 8000 mg/kg; nickel , 2000 mg/kg). In fact, the mean cobalt level of the battery electrode is about 45 times the toxicity threshold limit concentration limit for cobalt while the mean nickel result is about 38 times the toxicity threshold limit concentration. Spent portable rechargeable batteries should be handled as toxic materials that require special treatment. Implementation of a well-coordinated management strategy for spent batteries is urgently required to check the dissipation of large doses of toxic heavy metals and rare earth into the environment.

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“…Waste land filling continues to be the main and most common method of disposal of municipal solid wastes in Nigeria and in most part of the world. Landfill is a practice adopted as a substitute to ocean out-falls of sewage, domestic and industrial waste after the outlawing and termination of the latter due to its effect on the lives in the ocean (Ogundiran and Afolabi, 2008). The ocean outfall Ifemeje Jonathan C., Udedi Stanley C., Nwaka Andrew C., Lukong Colin B., Olisah M.C.…”

Section: Introductionmentioning

confidence: 99%

“…1-9 2 causes introduction of pollutants into the food-web through bioaccumulation, changes in the biotic diversity and introduction of persistent organic compounds (e.g. polycyclic aromatic hydrocarbons (PAHs)) into the marine environment (Ogundiran and Afolabi, 2008). However, with the termination of ocean outfall, especially in USA in 1992, as a result of ocean Disposal Ban Act of 1988 (De Zuane 1990;Adriano 2001) and the European Union under the Urban Waste Water Treatment Directive (European Union, 2000), waste disposal on land especially the landfill method as an alternative has been on the increase.…”

Section: Introductionmentioning

confidence: 99%

“…Dangerous chemicals like PAHs and organic micro pollutants often found in leachate are assimilated by aquatic species, plants and passed through food chain and bioaccumulate in human on long term exposure (Adewuyi and Opasina, 2010). Exposure to toxic substances to unsuspecting populace and those residing near contaminated dumpsite, has led to series of human health disorders which include organ dysfunction, agonistic and antagonistic effect, anaemia, reproductive, neurobehavioral and genetic disorders (Palmer et al, 2005;Ogundiran and Afolabi, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Studies on the Level of Contamination of Leachates from Municipal Solid Waste Open Dumpsite in Onitsha, Anambra State, Nigeria

Ifemeje¹,

Udedi²,

Nwaka³

et al. 2016

IJEPS

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Leachates are known to contain dissolved or suspended solid materials which may be toxic when it finds its way to water bodies or land meant for agricultural purposes. The study however investigated the physicochemical properties, anions and heavy metal composition of leachates from the solid waste dumpsite at Onitsha, Anambra State, Nigeria so as to ascertain the level of contamination by comparing values obtained with the FEPA/WHO standards. Analyses were carried out using leachates obtained from two portions of the sites marked active site and abandoned site (withdrawing dumpsite). The result of the physicochemical analysis revealed that there was significant increase at p<0.05 of mean values of Electrical Conductivity (EC), Total Dissolved Solid (TDS), Total Suspended Solids (TSS), Chemical Oxygen Demand (COD), Biological Oxygen Demand (BOD) and Total Hydrocarbon Content (THC) of the active site when compared to values from the abandoned site. Analysis has shown that leachate from the active site is a potential source of heavy metal poisoning and a source of pollution with potential effect on the environment and neighboring underground water if the present trend is not controlled.

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Assessment of the physicochemical parameters and heavy metals toxicity of leachates from municipal solid waste open dumpsite

Cited by 94 publications

References 23 publications

Assessment of the content of heavy metals and potential pathogenic microorganisms in soil under illegal dumping sites

Assessment of the content of heavy metals and potential pathogenic microorganisms in soil under illegal dumping sites

Heavy metal characterization of waste portable rechargeable batteries used in mobile phones

Studies on the Level of Contamination of Leachates from Municipal Solid Waste Open Dumpsite in Onitsha, Anambra State, Nigeria

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