Research Article
Effects of Biosolids at Varying Rates on Earthworms (Eisenia fetida) and Springtails (Folsomia candida)
Table 5
Chemical analysis of Biosolids.
| | Chemical element | Biosolid 1 | Biosolid 2 | Biosolid 3 | Biosolid 4 | Biosolid 5 | Biosolid 6 |
| | mg kg−1 | | | | | | | | Aluminium | 9963 | 164038 | 25963 | 5514 | 31202 | — | | Antimony | 3 | 2 | 3 | 3 | 4 | — | | Arsenic | 2 | 3 | 3 | 3 | 4 | 10.5 | | Barium | 114 | 99 | 228 | 222 | 234 | 332 | | Beryllium | <0.5 | 0.2 | <0.5 | <0.5 | <0.5 | <0.001 | | Cadmium | <0.5 | 0.8 | 1 | 0.6 | 0.8 | 16.3 | | Chromium | 11.1 | 17 | 18 | 37 | 25 | 8.7 | | Cobalt | 2 | 3 | 4 | 3 | 3 | — | | Copper | 221 | 308 | 236 | 260 | 202 | 530.7 | | Iron* | 2.12 | 7 | 7 | 5 | 72 | — | | Lead | 38 | 157 | 79 | 57 | 31 | 54.3 | | Manganese | 139 | 116 | 194 | 188 | 224 | 250 | | Nickel | 9 | 15 | 20 | 23 | 71 | 31.1 | | Selenium | 2 | 0.96 | 2 | 1 | 2 | 154.7 | | Silver | 3 | 2 | 0.94 | 2 | 0.8 | — | | Tin | 10 | 9 | 12 | 8 | 238 | — | | Zinc | 301 | 547 | 681 | 355 | 403 | 83.4 | | Sulphur | 5800 | 9900 | 7900 | 6300 | 10300 | — | | Nitrogen | 36600 | 45400 | 39100 | 38400 | 30766 | — | | Phosphorous | 11500 | 12400 | 15600 | 12800 | 28300 | — | | Potassium | 1430 | 6430 | 4900 | 3060 | 2430 | — | | Magnesium | 2530 | 5930 | 6500 | 3700 | 4060 | — | | Sodium | 2360 | 5330 | 3410 | 1660 | 1500 | — | | Organic matter % | 86.3 | 69.3 | 70.6 | 78.1 | 55.4 | — |
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alues for Iron are mg g−1.
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