MOROCOMP (LIFE TCY05/MA000141) - Unit of Environmental ...

Figure 19: Changes in ammonium concentration [mg/kg] during the 2 nd composting trial....................71
Figure 20: Changes in nitrates concentration during the 2 nd composting trial........................................72
Figure 21: Changes in C:N ratio during the 2 nd composting trial ...........................................................73
Figure 22: Percentages of total dissolved heavy metals in compost resulted from the 2 nd trial..............78
Figure 23: Heavy metals content [% d.s] that is dissolved in water and in weak organic acids in
compost resulted from the 2 nd composting trial ............................................................................79
Figure 24: Temperature profile during the 3 rd composting trial .............................................................86
Figure 25: Moisture content profile during the 3 rd composting trial.......................................................87
Figure 26: Oxygen profile during the 3 rd composting trial .....................................................................88
Figure 27: Changes in pH values during the 3 rd composting trial ..........................................................90
Figure 28: Changes in total carbon content [%] during the 3 rd composting trial....................................91
Figure 29: Changes in total nitrogen content [%] during the 3 rd composting trial..................................92
Figure 30: Changes in ammonium concentration [mg/kg] during the 3 rd composting trial....................93
Figure 31: Changes in nitrates concentration during the 3 rd composting trial ........................................94
Figure 32: Changes in C:N ratio during the 3 rd composting trial............................................................95
Figure 33: Percentages of total dissolved heavy metals in compost resulted from the 3 rd trial ............100
Figure 34: Heavy metals content [% d.s] that is dissolved in water and in weak organic acids in
compost resulted from the 3 rd composting trial...........................................................................101
Figure 35: Temperature profile during the 4 th composting trial ...........................................................107
Figure 36: Moisture content profile during the 4 th composting trial.....................................................108
Figure 37: Oxygen profile during the 4 th composting trial ...................................................................109
Figure 38: Changes in pH values during the 4 th composting trial.........................................................111
Figure 39: Changes in total carbon content [%] during the 4 th composting trial ..................................112
Figure 40: Changes in total nitrogen content [%] during the 4 th composting trial................................113
Figure 41: Changes in ammonium concentration [mg/kg] during the 4 th composting trial ..................114
Figure 42: Changes in nitrates concentration during the 4 th composting trial ......................................115
Figure 43: Changes in C:N ratio during the 4 th composting trial..........................................................116
Figure 44: Percentages of total dissolved heavy metals in compost resulted from the 4 th trial ............121
Figure 45: Heavy metals content [% d.s] that is dissolved in water and in weak organic acids in
compost resulted from the 4 th composting trial...........................................................................122
Tables
Table 1: Parameters evaluated the standard methods used and their references.....................................21
Table 2: The physicochemical characteristics of the raw material used in the 1 st composting trial .......29
Table 3: Limit Values for Heavy Metal Concentrations in Sludge for use in Agriculture [11]..............31
Table 4: Micro-biological parameters of primary sludge used in the 1 st composting trial .....................32
Table 5: Composition of the mix used for composting in the 1 st composting trial.................................32
Table 6: Characteristics of leachates resulting from the 1 st composting trial .........................................47
Table 7: Suggested limit values for wastewater application in water recipients based [41]...................49
Table 8: Physicochemical parameters of the compost produced in the 1 st composting trial...................50
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