Sanitary Landfill Leachates and Their Treatment

Chian, Edward S. K.; DeWalle, Foppe B.

doi:10.1061/jeegav.0000476

Cited by 209 publications

(23 citation statements)

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“…The pH values, ranging from 7.3 -7.5, indicates slight alkalinity of the leachates. Leachate pH values are reported to increase with age and are usually greater than 7 (10,17,25). Values of pH greater than 7 may be attributed to high salinity, an increase in the utilization of unionized free volatile fatty acids by bacteria, and a decrease in shortchain fatty acids (26).…”

Section: Physico-chemical Properties Of Leachatementioning

confidence: 99%

Source Analysis of Heavy metals and Polycyclic Aromatic Hydrocarbons from a popular dumpsite, Lagos State, Nigeria

Mohammed

Iniaghe

Abu

et al. 2020

Journal of the Turkish Chemical Society Section A: Chemistry

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In this study, landfill leachates and plants from Olusosun landfill in Ojota area of Lagos State, Nigeria were investigated. Physicochemical parameters, concentrations of heavy metals (HMs -Pb, Cd, Cr, Ni, Mn and Zn) and polycyclic aromatic hydrocarbons (PAHs) were determined in leachates while HMs and PAHs were determined in plants. Nitric and Perchloric acid mixtures were used for digesting both leachates and plant samples before quantification by atomic absorption spectrometry. Cold extraction was used for extracting PAHs and was quantified using gas chromatography-mass spectrometry. The range of results on HMs analysis were:

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Section: Physico-chemical Properties Of Leachatementioning

confidence: 99%

Source Analysis of Heavy metals and Polycyclic Aromatic Hydrocarbons from a popular dumpsite, Lagos State, Nigeria

Mohammed

Iniaghe

Abu

et al. 2020

Journal of the Turkish Chemical Society Section A: Chemistry

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“…Recent studies have affirmed the amenability of some landfill leachates to biodegradation (17,18). Aerobic and anaerobic biological processes were most effective in treating leachates derived from recently constructed landfills, whereas physicalchemical processes worked best for treating leachates from stabilized landfills.…”

Section: Separation or Waste Partitioningmentioning

confidence: 97%

Elimination of the hazards from hazardous wastes.

Gloyna¹,

Taylor²

1978

Environ Health Perspect

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The "hazard" associated with a waste essentially controls the overall engineering approach to finding suitable alternatives for solving potential disposal problems. It should be recognized that all factors affecting environmental equilibrium must be considered, including product sales, process design, financing, pre- and end-of-pipe treatment, residuals management, and ultimate bioaccumulation of residuals. To meet this challenge, a systems approach to waste treatment and residuals disposal provides a logical approach, but this management concept requires a thorough understanding of the important physical and chemical aspects of the problem, as well as many social implications of the resulting decisions. Thus waste management within a plant necessarily involves process control, pretreatment and end-of-pipe treatment. Further, it follows that residuals management from a disposal point-of-view must ultimately embrace what is called the "multi-barrier concept." In essence, hazard elimination occurs in varying degrees during each phase of a properly engineered system.

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“…Ammoniacal-Nitrogen concentration was measured in triplicate using the Modified Nessler Method as proposed by Jeong et al (33). Dissolved inorganic phosphate (DIP) was measured using the ascorbic acid method as described by Chian and Dewalle (34). Nitrite and nitrate were measured simultaneously using a colorimetric assay which utilises vanadium (III) for nitrate reduction and detection by the acidic Griess reaction (35).…”

Section: Sampling and Analysismentioning

confidence: 99%