Characterization of humic substances present in landfill leachates with different landfill ages and its implications

Kang, Kyungnam; Shin, Hyun Sang; Park, Heekyung

doi:10.1016/s0043-1354(02)00114-8

Cited by 401 publications

(184 citation statements)

References 25 publications

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“…In addition, the darker color of leachate after aeration in current study indicated the presence of high concentration of HS, and led to the following exploration. Table 1 with that of Kang [32], who also reported that the MW of HS tended to be higher as landfill aged. Moreover, the HAs in aerobic reactors displayed higher MW than anaerobic ones from the same sampling period, implying more intensive polymerization process in aerobic conditions.…”

Section: Docmentioning

confidence: 56%

“…On the other hand, the existent alkyl carbon was lost as CO 2 during humification, as aliphatic structures also presented a carbon source for microorganism [47]. The ambiguity in the temporal variation of H/C and N/C ratios in HAs was also observed in other relative studies [31,32].…”

Section: Elemental Analysismentioning

confidence: 80%

“…The properties of HS are affected by the landfill age and landfill operation mode [22,32,33]. Therefore, variations in HS structure could reflect the chemical and biological mechanisms involved [33].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Monitoring transitory profiles of leachate humic substances in landfill aeration reactors in mesophilic and thermophilic conditions

Tong

Yin

et al. 2015

Journal of Hazardous Materials

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Section: Docmentioning

confidence: 56%

Section: Elemental Analysismentioning

confidence: 80%

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Monitoring transitory profiles of leachate humic substances in landfill aeration reactors in mesophilic and thermophilic conditions

Tong

Yin

et al. 2015

Journal of Hazardous Materials

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“…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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“…The calculated BOD/COD ratio value of 0.1 indicates the type of stable storage. According to the adopted indicators, a BOD/COD ratio below 0.12 in raw leachates indicates this type of landfill [18]. The research also draws attention to the fact that leachates from stabilized landfills show higher pH values, usually above 7 [7].…”

Section: Leachate Characteristicsmentioning

confidence: 98%

The removal of organic compounds from landfill leachate using ozone-based advanced oxidation processes

Leszczyński

Maria

2018

E3S Web Conf.

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Abstract. In this study, the application of ozonation and ozonation with hydrogen peroxide processes for landfill leachate treatment was investigated. The effluents were characterized by COD 710 mgO2/dm 3 and BOD5 72 mg O2/dm 3 . According to the adopted indicators, the determined BOD/COD ratio of 0.1 in raw leachates indicates a stabilized landfill. Ozone was applied at doses of 0.15 -0.6 gO3/dm 3 , and hydrogen peroxide at such doses to keep the weight ratios of H2O2/O3 0.4 -1.6. The maximum COD and UV absorbance removal was respectively 29% and 51% by applying a high ozone dose of 0.6 gO3/dm 3 . After oxidation, the ratio of BOD/COD was increased from 0.1 up to 0.3. It has been shown that by using hydrogen peroxide in ozonation, organic compounds expressed as COD can be efficiently removed from the effluents. The best conditions for the H2O2/O3 process were obtained with a H2O2/O3 ratio of 0.8 and ozone dose of 0.6 gO3/dm 3 . Under these conditions, the removal efficiency of COD was 46%.

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Characterization of humic substances present in landfill leachates with different landfill ages and its implications

Cited by 401 publications

References 25 publications

Monitoring transitory profiles of leachate humic substances in landfill aeration reactors in mesophilic and thermophilic conditions

Monitoring transitory profiles of leachate humic substances in landfill aeration reactors in mesophilic and thermophilic conditions

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

The removal of organic compounds from landfill leachate using ozone-based advanced oxidation processes

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