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Article dans une revue
Effects of sonication, heating and fungal enzymatic digestion on the ability of activated sludge supernatant to bind Pb and Cd
Abstract : The ability of supernatant obtained after sludge disintegration treatment to bind Cd or Pb as well as the composition of the supernatant were studied. Different processes of sludge reduction such as sonication, heating at 95 °C or 120 °C at lab-scale, and predation by fungi in situ were investigated. Organic and to a lesser extent mineral sludge supernatant composition showed significant differences after the disintegration processes and to a lesser extent after predation by fungi. The use of size exclusion chromatography confirmed a significant difference in molecular size distribution in the supernatant of treated and untreated sludge. The changes in supernatant composition after treatment led to a significant increase in its ability to bind Cd and Pb (by increasing the number of fixation sites). Pb displayed a higher affinity for sludge supernatant than Cd.
https://hal-unilim.archives-ouvertes.fr/hal-00654512
Contributeur : Claire Douady Connectez-vous pour contacter le contributeur
Soumis le : jeudi 22 décembre 2011 - 09:35:51
Dernière modification le : mercredi 20 octobre 2021 - 01:31:09
Contributeur : Claire Douady Connectez-vous pour contacter le contributeur
Soumis le : jeudi 22 décembre 2011 - 09:35:51
Dernière modification le : mercredi 20 octobre 2021 - 01:31:09
