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Table 4 Comparison of the mineral comparison of these organic wastes studied

From: Evaluation of physicochemical, microbiological, and energetic characteristics of four agricultural wastes for use in the production of green energy in Moroccan farms

Mineral element

Cow dung (mg/kg)

Broiler droppings (mg/kg)

Horse manure (mg/kg)

Excrement of laboratory mouse (mg/kg)

Inhibitory content of anaerobic digestion (mg/l)

Ca

59.73–63.31

29.82–30.4

21.79–22.61

20.42–20.73

8000a

Fe

2.94–3.31

0.057–0.99

6.36–6.37

0.56–0.61

5650a

K

11.81–12.28

32.85–34.96

13.72–13.84

12.75–13.54

400b

Na

3.80–3.98

3.20–3.25

2.12–2.16

2.69–2.78

200b

Co

0.251–0.256

0.072–0.072

1.435–1.561

–

100b

Cr

4.178–4.353

7.967–8.296

23.259–32.370

6.44–8.48

300b

Cu

24.559–24.612

69.453–70.909

16.354–17.444

25.24–26.48

250b

Mo

4.008–4.018

5.768–7.533

3.021–5.022

2.43–2.43

–

Ni

6.613–29.931

9.166–14.993

17.237–73.856

6.64–7.08

300b

Pb

1.364–2.009

2.318–2.370

5.293–5.588

0.51–0.64

340b

Se

0.335–0.335

0.632–1.231

0.227–0.271

0.07–0.53

1.8a

W

–

3.114–3.114

–

2.57- 2.57

–

Zn

62.451–62.677

191.767–196.358

61.210–67.588

122.90–127.14

400b

  1. a [80], b [65]