Research Article
Two-Stage Dry Anaerobic Digestion of Beach Cast Seaweed and Its Codigestion with Cow Manure
Table 1
Elemental composition of solid cow manure and seaweed.
| Metal | Solid cow manure (mg/kg) | Seaweed (mg/kg) |
| Fe | 110 | 530 | Al | 40 | 178 | B | 5.2 | 13.1 | Mo | 0.39 | 0.14 | Hg | 0.007 | 0.012 | Cu | 4.7 | 1.4 | Cr | 0.23 | 0.78 | As | 0.04 | 0.87 | W | 0.01 | 0.02 | Se | 0.24 | 7.49 | Co | 0.33 | 0.20 | Pb | 0.12 | 0.99 | P | 830 | 265 | S | 630 | 1841 | Zn | 27 | 14 | Cd | 0.04 | 0.20 | Mn | 34 | 5.3 | Ni | 0.31 | 1.21 | Na | 1200 | 1872 | Mg | 930 | 562 | Ca | 2000 | 5616 | K | 5800 | 1092 | Si | 206 | 79 | C | 105 | 52 | N | | 5.6 | N-kj | 0.62 | | C/N | 16.9 | 9.3 | TS (%) | 20.6 | 24.1–31.2 | VS (% of TS) | 82.4 | 30.0–32.1 |
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