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Compost and sulfur affect the mobilization and phyto-availability of Cd and Ni to sorghum and barnyard grass in a spiked fluvial soil
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|Authors:||Shaheen, Sabry M.; Balbaa, Ali A.; Khatab, Alaa M.; Rinklebe, Jorg|
|Author Affiliations:||Primary: |
University of Kafrelsheikh, Department of Soil and Water Sciences, Kafr El-Sheikh, Egypt
University of Wuppertal, Germany
|Volume Title:||Environmental geochemistry and health implications|
|Volume Authors:||Rinklebe, Jörg, editor; Ok, Yong Sik; Tsang, Daniel; Cave, Mark; Zhang, Chaosheng|
|Source:||Environmental geochemistry and health implications, edited by Jörg Rinklebe, Yong Sik Ok, Daniel Tsang, Mark Cave and Chaosheng Zhang. Environmental Geochemistry and Health, 39(6), p.1305-1324. Publisher: Springer, London, United Kingdom. ISSN: 0269-4042|
|Note:||In English. 72 refs.; illus., incl. 2 tables|
|Summary:||Soil reclamation via additives can cause contradictory effects on the mobilization of toxic elements in soils under dry and wet conditions. Therefore, our aim was to investigate the impact of compost and sulfur in two rates (1.25 and 2.5%) on fractionation, mobilization, and phyto-availability of cadmium (Cd) and nickel (Ni) to sorghum (dry soil) and barnyard grass (wet soil) in a fluvial soil spiked with 25 mg Cd or 200 mg Ni/kg soil. Compost decreased the solubility and mobilization of Cd (especially in dry soil) and Ni (in both soils). Sulfur increased the solubility of Cd (31% in dry soil-49% in wet soil) and Ni (4.6% in wet soil-8.7% in dry soil). Sulfur altered the carbonate fraction of Cd to the soluble fraction and the residual fraction of Cd and Ni to the non-residual fraction. Compost decreased Cd and increased Ni in sorghum, but enhanced Cd and degraded Ni in grass. Sulfur increased Cd and Ni in both plants, and the increasing rate of Cd was higher in grass than in sorghum, while Ni was higher in sorghum than in grass. These results suggest that compost can be used as an immobilizing agent for Cd in the dry soil and Ni in the wet soil; however, it might be used as mobilizing agent for Cd in the wet soil and Ni in the dry soil. Sulfur (with rate 2.5%) can be used for enhancing the phyto-extraction of Cd and Ni (especially Cd) from contaminated alkaline soils. Copyright 2017 Springer Science+Business Media B.V., part of Springer Nature and Springer Science+Business Media Dordrecht|
|Subjects:||Agriculture; Alkali metals; Angiospermae; Arid environment; Bioavailability; Bioremediation; Cadmium; Chemical fractionation; Composting; Entisols; Gramineae; Heavy metals; Metals; Mobilization; Monocotyledoneae; Nickel; Phytoremediation; Plantae; Reclamation; Remediation; Sodium; Soils; Spermatophyta; Sulfur; Terrestrial environment; Wetlands; Africa; Egypt; North Africa; Arid soils; Echinochloa crusgalli; Fluvial soils; Kafr El Sheikh Egypt; Sakha Egypt; Sodic soils; Sorghum bicolor|
|Coordinates:||N310512 N310512 E0305649 E0305649|
|Copyright Information:||GeoRef, Copyright 2021 American Geosciences Institute. Reference includes data supplied by Springer Verlag, Berlin, Federal Republic of Germany|
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