| Assessing Bioavailability of Metals in Biosolids-Treated Soils: Biosolids and Residuals Contributor(s): Chang, A. C. (Author), Crowley, D. E. (Author), Page, A. L. (Author) |
|
 |
ISBN: 1843396793 ISBN-13: 9781843396796 Publisher: Water Environment Research Foundation OUR PRICE: $159.60 Product Type: Paperback Published: April 2004 * Not available - Not in print at this time * |
| Additional Information |
| BISAC Categories: - Technology & Engineering | Metallurgy |
| Dewey: 631.41 |
| LCCN: 2003109624 |
| Series: Werf Report S |
| Physical Information: 0.44" H x 8.25" W x 11" (1.06 lbs) 216 pages |
| Descriptions, Reviews, Etc. |
| Publisher Description: Plant-availability of metals in biosolids-treated soils may be mathematically described by M t = C x 1 - e - (k x t) ] where M t (mg kg -1 ) is the cumulative metal removal from the biosolids-treated soils by growing and harvesting plants for t years, C is the total phytoavailable metal pool of the soil (mg kg -1 ) at t = 0, and k is the metal absorption rate coefficient (yr -1 ). The total available metal pool, C, is defined as metals extractable by organic acids in the rhizosphere of growing plants and k is related to the kinetics of metal release by organic acids. Half-life of the available metals in biosolids-amended soils may be derived from k. Experiments were conducted to characterize the concentration and composition of the organic acids. A successive extraction method was used to extract metals from biosolids-treated soils for determinging C and k. In this manner, the plant available metals of the bioslids-treated soils are defined by the total avialble metals, half-life, and duration of plant growing. Examples showed that the total available metals of the biosolids-amended were 18 to 39, 0.12 to 2.0, 7.4 to 13, 24 to 46, 1.2 to 2.1, and 43 to 53% of the total Cd, Cr, Cu, Ni. Pb, and Zn in the soils. This publication can also be purchased and downloaded via Pay Per View on Water Intelligence Online - click on the Pay Per View icon below |