Primary treatment of anaerobic landfill leachate using activated carbon and limestone: batch and column studies

Foul, Ahmed Abu; Aziz, Hamidi Abdul; Isa, Mohamed Hasnain; Hung, Yung Tse

doi:10.1504/ijewm.2009.027397

Cited by 66 publications

(38 citation statements)

References 21 publications

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“…The BOD 5 /COD ratio showed that the leachate was poorly biodegradable. The low BOD 5 /COD ratio (0.11) also demonstrated that the leachate was stable and difficult to be further degraded biologically (Foul et al 2009). From the table, high value of pH and low concentrations of COD, BOD 5 and heavy metals indicate that the leachate was in the phase of methane fermentation and classified as anaerobic phase (Salem et al 2008).…”

Section: Resultsmentioning

confidence: 99%

Semi-aerobic stabilized landfill leachate treatment by ion exchange resin: isotherm and kinetic study

et al. 2015

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This study was carried out to investigate the treatability of ion exchange resin (Indion MB 6 SR) for the removal of chromium (VI), aluminium (III), zinc (II), copper (II), iron (II), and phosphate (PO 4 ) 3-, chemical oxygen demand (COD), ammonia nitrogen (NH 3 -N) and colour from semi-aerobic stabilized leachate by batch test. A range of ion exchange resin dosage was tested towards the removal efficiency of leachate parameters. It was observed that equilibrium data were best represented by the Langmuir model for metal ions and Freundlich was ideally fit for COD, NH 3 -N and colour. Intra particle diffusion model, pseudo first-order and pseudo second-order isotherm models were found ideally fit with correlation of the experimental data. The findings revealed that the models could describe the ion exchange kinetic behaviour efficiently, which further suggests comprehensive outlook for the future research in this field.

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Section: Resultsmentioning

confidence: 99%

Semi-aerobic stabilized landfill leachate treatment by ion exchange resin: isotherm and kinetic study

et al. 2015

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“…Landfill leachate contains large amounts of pollutants measured as COD, BOD 5, ammonia-N, SS, heavy metals, phenols, and phosphorus Foul et al, 2009;Renou et al, 2008). In general, the pollutants in landfill leachate could be categorized as: 1) organic constituents, including volatile fatty acids, humic, and fulvic substances; 2) inorganic constituents, such as chloride, sulphate, ammonia-N, phosphate, and sodium; and 3) heavy metals, such as plumbum, nickel, manganese, iron, zinc, etc.…”

Section: Variations In Leachate Compositions and Treatment Strategymentioning

confidence: 99%

“…Landfill leachate mainly consists of large amounts of organic matter including dissolved organic matter, phenol, ammonical-nitrogen, phosphate, heavy metals, sulphide, hardness, acidity, alkalinity, salinity, solids, inorganic salts, and other toxicant (Foul et al, 2009;Aziz et al, 2009;Renou et al, 2008;Kang et al, 2002;Wang et al, 2002). The complexity of these characteristics makes the leachate more difficult to manage.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Leachate from Kuala Sepetang and Kulim Landfills: A Comparative Study

Zainol¹,

Aziz²,

Yusoff³

2012

EER

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The general characteristics of Kuala Sepetang Landfill Site (KSLS) and Kulim Landfill Site (KLS) in the northern part of Malaysia were investigated. The average values of the parameters for leachate at KSLS and KLS, such as pH (8.05 and 7.59), EC (11.9 and 2.92 mS/cm), ORP (-33.02 and +17.8 On the other hand, parameters such as pH, copper, iron, manganese, nickel, and zinc remained within the allowable limits. The measured leachate would need an appropriate treatment strategy to reduce the pollutants to a satisfactory level prior to discharge into receiving system.

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“…Waste disposal in landfills is an increasingly common practice in large cities (Abrelpe, 2011), and generates large volumes of leachate as the product of waste decomposition and percolation of rainwater. Leachate is a dark liquid, with unpleasant odour; it is highly toxic and should be handled properly before its release in receiving bodies (Baun et al, 2003;Foul et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of phytotoxicity of municipal landfill leachate before and after biological treatment

2015

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In the present study, leachate toxicity of a municipal solid waste landfill located in the Sinos River Valley region (southern Brazil) was evaluated using plant bioassays. Leachate toxicity was assessed by analysis of seed germination and root elongation of lettuce (Lactuca sativa L.) and rocket plant (Eruca sativa Mill.) and root elongation of onions (Allium cepa L.). Bioassays were performed by exposing the seeds of L. sativa and E. sativa and the roots of A. cepa to raw leachate, treated leachate (biological treatment) and negative control (tap water). The levels of metals detected in both samples of leachate were low, and raw leachate showed high values for ammoniacal nitrogen and total Kjeldahl nitrogen. There is a reduction in the values of several physicochemical parameters, which demonstrates the efficiency of the treatment. Both L. sativa and A. cepa showed a phytotoxic response to landfill leachate, showing reduced root elongation. However, the responses of these two plant species were different. Root elongation was significantly lower in A. cepa exposed to treated leachate, when compared to negative control, but did not show any difference when compared to raw leachate. In L. sativa, seeds exposed to the raw leachate showed significant reduction in root elongation, when compared to treated leachate and negative control. Seed germination showed no difference across the treatments. The results of the study show that plant species respond differently and that municipal solid waste landfill leachate show phytotoxicity, even after biological treatment. Palavras-chave: bioensaios com plantas, poluição da água, tratamento de efluentes, efeitos tóxicos. Keywords

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Primary treatment of anaerobic landfill leachate using activated carbon and limestone: batch and column studies

Cited by 66 publications

References 21 publications

Semi-aerobic stabilized landfill leachate treatment by ion exchange resin: isotherm and kinetic study

Semi-aerobic stabilized landfill leachate treatment by ion exchange resin: isotherm and kinetic study

Characterization of Leachate from Kuala Sepetang and Kulim Landfills: A Comparative Study

Evaluation of phytotoxicity of municipal landfill leachate before and after biological treatment

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