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 |