Assessing Bioavailability Of Metals In Biosolids-treated Soils: Biosolids And Residuals - Couverture souple

Chang, A. C.; Crowley, D. E.

Couverture souple

ISBN 10 : 1843396793 ISBN 13 : 9781843396796

Editeur : IWA Publishing, 2004

Synopsis

Plant-availability of metals in biosolids-treated soils may be mathematically described by Mt = C x [1 - e- (k x t)] where Mt (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 biosolids-treated soils are defined by the total available metals, half-life, and duration of plant growing.

Détails de l'édition

• Éditeur: IWA Publishing
• Date d'édition: 2004
• Langue: anglais
• ISBN 10: 1843396793
• ISBN 13: 9781843396796
• Reliure: Broché
• Nombre de pages: 216
• Coordonnées du fabricant: non disponible
• Personne responsable: non disponible