FortinKaram2001

Référence

Fortin, J.A., Karam, A. (2001) Phosphorus sorption by red mud residue as affected by concentration and reaction time. Agrochimica, 45(1-2):55-66. (Scopus )

Résumé

This study was undertaken to evaluate the phosphorus (P) sorption potential of a red mud residue from Alcan, Jonquiere (Quebec) as a function of the P added and the reaction time. Batch sorption experiments were undertaken using P concentrations ranging from 2.5 to 50 mg of P per g of red mud and equilibration times ranging from 12 hours to 83 days. These experiments showed that the red mud residue has a very high sorption potential, with a maximum sorption between 40 and 45 mg g-1. P sorption with time by the red mud was biphasic, with a fast sorption phase followed by a slower one. The present results show that ligand exchange is involved in the rapid P sorption by the red mud, with possible P precipitation. Furthermore, P sorption was found to be concentration dependent, which is due to concentration gradient and change in the range of diffusion coefficients, which increased with increasing amount of P added. The present results show that one major problem in the establishment of a vegetative cover on this residue is due to the very high sorption potential, which depends on the amount of P added and the time of reaction.

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@ARTICLE { FortinKaram2001,
    AUTHOR = { Fortin, J.A. and Karam, A. },
    TITLE = { Phosphorus sorption by red mud residue as affected by concentration and reaction time },
    JOURNAL = { Agrochimica },
    YEAR = { 2001 },
    VOLUME = { 45 },
    NUMBER = { 1-2 },
    PAGES = { 55-66 },
    NOTE = { cited By 9 },
    ABSTRACT = { This study was undertaken to evaluate the phosphorus (P) sorption potential of a red mud residue from Alcan, Jonquiere (Quebec) as a function of the P added and the reaction time. Batch sorption experiments were undertaken using P concentrations ranging from 2.5 to 50 mg of P per g of red mud and equilibration times ranging from 12 hours to 83 days. These experiments showed that the red mud residue has a very high sorption potential, with a maximum sorption between 40 and 45 mg g-1. P sorption with time by the red mud was biphasic, with a fast sorption phase followed by a slower one. The present results show that ligand exchange is involved in the rapid P sorption by the red mud, with possible P precipitation. Furthermore, P sorption was found to be concentration dependent, which is due to concentration gradient and change in the range of diffusion coefficients, which increased with increasing amount of P added. The present results show that one major problem in the establishment of a vegetative cover on this residue is due to the very high sorption potential, which depends on the amount of P added and the time of reaction. },
    DOCUMENT_TYPE = { Article },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-0347236636&partnerID=40&md5=fe776a18777e99608362afd4bec418b7 },
}

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