Research Article
Influence of Stabilized Biosolids Application on Availability of Phosphorus, Copper, and Zinc
Table 3
Selected characteristics and metal concentrations in the studied amendments.
| | Properties | Organic amendments | Inorganic amendments | | WH | RS | CS | BFA | CFA | B | SBFL | CaCO3 |
| | pH | 6.18 | 7.60 | 5.62 | 9.68 | 12.5 | 9.24 | 12.59 | 8.81 | | EC, dSm−1 | 6.91 | 2.83 | 2.01 | 0.98 | 4.48 | 1.13 | 1.55 | 0.17 | | OM, % | 75.25 | 52.7 | 97.49 | — | — | — | — | — | | CaCO3, % | — | — | — | — | 12.4 | — | 81.6 | — | | Total elements, mg kg−1 | | | | | | | | | | Fe | — | — | — | 7590.0 | 21228.0 | 59750.0 | 651.5 | — | | Mn | — | — | — | 78.35 | 202.9 | 618.5 | 18.9 | — | | Zn | 111.4 | 28.6 | 65.0 | 5.55 | 55.1 | 108.25 | 26.40 | 37.0 | | Cu | 60.8 | 98.6 | 47.1 | 4.30 | 30.1 | 33.70 | 9.70 | 41.1 | | Cd | nd | nd | nd | nd | 2.15 | 1.35 | 3.45 | nd | | Ni | — | — | — | 8.8 | 170.9 | 50.35 | 13.10 | — | | Pb | 8.6 | 68.4 | — | 16.0 | 62.5 | 34.5 | 57.00 | — |
|
|
CFA: coal fly ash, B: bentonite, SBFL: sugar beet factory lime, RS: rice straw, WH: water hyacinth, CS: cotton stalks, nd: not detected, —: not measured.
|
