Detailed internal characterisation of two Finnish landfills by waste sampling

Sormunen, Kai; Ettala, Matti; Rintala, Jukka

doi:10.1016/j.wasman.2007.01.003

Cited by 50 publications

(48 citation statements)

References 35 publications

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“…Greater BMP values per VS percentage are obtained in a study where BMP assays went on longer time [12], showing the influence of the experimental used methodology on the results. Considering only the data with greater R 2 [8,9,12,15,11], between 1.6 and 4.5 LCH 4 per 10 g VS are generated, starting from VS contents between 16 and 37%.…”

Section: Bmp Versus Vsmentioning

confidence: 92%

“…Most of these latter come from the attempt of assessing the stabilization state of bioreactor landfills [7][8][9][10][11]. Others directly tried to characterize old landfills [12,13], study stabilization indicators and anaerobic biodegradability of the buried waste [14,15] or establish correlations between different waste parameters [2,16,17]. Table 1 shows the analyses used for old waste characterization in the consulted studies together with their fundamentals.…”

Section: Waste Analysesmentioning

confidence: 99%

“…Unfortunately, the assay presents great complexity: it must be done by triplicate, sometimes nutrient and seed addition is required, inhibition problems can appear due to acidification … Moreover it requires extensive time: periods greater than 100 days have been suggested. Even though most tests performed are based on a method described by [18] or by [4], different periods of time, temperatures, or particle sizes in the waste sample have been used by the different researchers; sometimes the generated methane has been measured whereas other times the measured variable is the volume of gas; and different methodologies (with different accuracies) have been taken by researchers to measure it, such as syringes [1,11] or water displacement methods [12,13] combined with Gas Chromatography analyses. BMP is a good example of the difficulties described above and hence the interest in relating its value with the results of other analysis.…”

Section: Waste Analysesmentioning

confidence: 99%

“…Table 2 shows the published correlations together with the laws obtained in the present work based on published data. Even though, the data compiled in [7,10] do not show a clear correspondence, great part of the studied data [9,11,12,15] present significant correlation between BMP and VS.…”

Section: Bmp Versus Vsmentioning

confidence: 99%

“…Considering only the data with greater R 2 [8,9,12,15,11], between 1.6 and 4.5 LCH 4 per 10 g VS are generated, starting from VS contents between 16 and 37%. Taking all the samples analysed in these studies, a rough estimate value of 2 LCH 4 per 10 gVS, from starting values of 24% VS is obtained.…”

Section: Bmp Versus Vsmentioning

confidence: 99%

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Biodegradation stability of organic solid waste characterized by physico-chemical parameters

Cobo¹,

López²,

Lobo³

2008

WIT Transactions on Ecology and the Environment

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A generalized methodology to characterize the bio-chemical properties of waste results is of great interest in waste management. The chemical and physical methods traditionally used to determine the organic content of solids, such as volatile solids content (VS), total organic carbon content (TOC), cellulose (CEL), hemicellulose (HEM), lignin (LIG), and leaching tests with later analyses of the eluate are easy to perform and to reproduce, but they do not give enough information about the rate of waste stabilization. On account of this, more specific assays like Biochemical Methane Potential (BMP) or respirometry assays are nowadays being performed. These biodegradation assays are more complex because they require extensive time and specific equipments and a number of influencing parameters have to be considered. These difficulties promoted the interest in looking for correlations between "conventional", simpler analyses and biodegradation assays. Based on characterization results obtained by different authors in old waste, ratios between BMP and several parameters are studied in this paper, showing significant correlations in most cases. As a theoretical analysis indicates, only for CEL and CEL+HEM laws that can be generalized to other cases were obtained. VS and (CEL+HEM)/LIG are indicators of the degradation state too, but only with regard to samples of the same type of waste. Since VS content does not inform about organic matter biodegradability and (CEL+HEM)/LIG is independent of the inorganic fraction of waste, the laws BMP/VS and BMP/[(CEL+HEM)/LIG] obtained are different for each studied data series.

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Section: Bmp Versus Vsmentioning

confidence: 92%

Section: Waste Analysesmentioning

confidence: 99%

Section: Waste Analysesmentioning

confidence: 99%

Section: Bmp Versus Vsmentioning

confidence: 99%

Section: Bmp Versus Vsmentioning

confidence: 99%

See 3 more Smart Citations

Biodegradation stability of organic solid waste characterized by physico-chemical parameters

Cobo¹,

López²,

Lobo³

2008

WIT Transactions on Ecology and the Environment

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Investigation of Leachate Treatment with Electrocoagulation and Optimization by Response Surface Methodology

Kabuk

İlhan

Avşar

et al. 2013

CLEAN Soil Air Water

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This study examined the treatability of leachate with the electrocoagulation process and its optimization using the response surface method. The three‐parameter optimization process and a 5‐level, 6‐replicate central composite design were included in the investigation on a set of 36 pieces created for the study. A second‐order full polynomial approximation model was applied to evaluate the results of the optimization studies, which were performed for the removal of chemical oxygen demand, total suspended solids, total organic carbon, total Kjeldahl nitrogen, and NH3‐N. When these parameters were compared, the appropriate working conditions obtained for current density and time were 20 mA cm−2 and 60 min, respectively, at pH 8. In this way, both pH adjustment and power costs were reduced.

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