Young Leachate Parameters Units N min-max Average Age year 8 - <1 Colour - 8 Green black - PH - 8 7-7.9    7.5 TKN mg L-1 8 2240-6048 3740 N-NH4 mg L-1 8 1728-4998 2570 TOC mg L-1 7 6890-15960 10920 COD mg L-1 7 4740-28120 13610 DBO5 mg L-1 1 - 2840 DBO5/COD - 1 - 0.4

BOD5 = Biochemical Oxygen Demand in Five Days CFU = Colony Forming Unit COD = Chemical Oxygen Demand N: Number of sample TKN = Total Kjeldahl Nitrogen TOC = Total Organic Carbon

Table 1: Characteristics of young leachate l from the Jbel Chekir landfill site south west of Tunis, Tunisia.

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