Table 9.5
Effect of excess activated sludge on initial properties of fruit and vegetable waste
Total carbon
(g/kg)
Total nitrogen
(g/kg)
C/N ratio
Total phosphorus
(g/kg)
16S rDNA (Â10
12
copies/kg)
Dehydrogenase activity [mg-TF/
(kg
Áh)]
Banana peels
413.5
Æ 1.3
10.5
Æ 0.1
39.6
Æ 0.3
1.3
Æ 0.0
1.3
Æ 0.1
0.0
Æ 0.0
Banana peels +
EAS
424.2
Æ 1.1
33.8
Æ 0.7
12.6
Æ 0.2
6.0
Æ 0.4
22.5
Æ 3.6
1568.8
Æ 113.3
Cabbage
386.6
Æ 0.5
28.8
Æ 0.0
13.4
Æ 0.0
3.0
Æ 0.1
9.8
Æ 2.2
31.5
Æ 7.4
Cabbage + EAS 405.8
Æ 0.1
52.7
Æ 0.3
7.7
Æ 0.0
6.3
Æ 0.9
11.1
Æ 0.2
1036.5
Æ 35.5
Lettuce
376.7
Æ 6.9
33.9
Æ 0.4
11.1
Æ 0.3
4.5
Æ 0.1
18.6
Æ 0.2
73.1
Æ 7.4
Lettuce + EAS
405.4
Æ 0.4
58.5
Æ 0.3
6.9
Æ 0.0
9.7
Æ 0.1
25.6
Æ 0.3
1447.1
Æ 195.6
Carrot
384.5
Æ 1.1
15.0
Æ 0.3
25.7
Æ 0.4
2.3
Æ 0.1
17.2
Æ 1.2
0.0
Æ 0.0
Carrot + EAS
404.7
Æ 0.5
46.1
Æ 0.5
8.8
Æ 0.1
8.0
Æ 0.0
32.7
Æ 0.05
1567.1
Æ 11.0
Potato
417.0
Æ 1.5
10.0
Æ 0.2
41.9
Æ 0.6
1.3
Æ 0.0
15.1
Æ 0.1
0.0
Æ 0.0
Potato + EAS
418.2
Æ 0.1
28.2
Æ 1.0
14.9
Æ 0.5
4.5
Æ 0.4
21.3
Æ 0.1
861.4
Æ 55.7
EAS
422.1
Æ 2.7
70.7
Æ 0.8
6.0
Æ 0.1 12.9
Æ 0.3
24.4
Æ 2.2
3642.8
Æ 213.1
FVW
fruit and vegetable wastes, EAS
excess activated sludge
Data are shown as means
Æ standard deviation, n
¼ 3
152
W. Li et al.