Stabilization of biosolids using iron nanoparticles

Details Stabilization of biosolids using iron nanoparticles Stabilization of biosolids using iron nanoparticles

C - Chemistry, Metallurgy

02

F

C02F 11/00 (2006.01) A62D 3/33 (2007.01) A61L 9/012 (2006.01) B09B 3/00 (2006.01) B09C 1/08 (2006.01) B22F 1/00 (2006.01) C09K 17/04 (2006.01)

Patent

CA 2610239

This invention discloses a stabilized biosolids composition and a method for the stabilization of biosolids. It entails the use of a chemically and biologically reactive material, in the form of ultrafine iron particles. The nanometer-sized iron particles are capable of degrading odorous organosulfur compounds, transforming persistent and toxic organic pollutants such as PCBs and chlorinated pesticides, inhibiting the growth of pathogens by increasing pH and maintaining the increased pH of the stabilized biosolids, immobilizing toxic metal ions such as mercury and lead, and improving the overall quality of biosolids for land application and plant growth.

Composition de biosolides stabilisée et procédé de stabilisation de biosolides, reposant sur l'utilisation de matériau chimiquement et biologiquement réactif, sous la forme de particules en fer ultrafines. Les particules de fer de l'ordre du nanomètre utilisées peuvent dégrader des composés organosulfureux odorants, transformer des polluants organiques persistants et toxiques du type biphényles polychlorés (PCB) et pesticides chlorés, inhiber la croissance de pathogènes par augmentation du pH, et maintien du pH augmenté, des biosolides stabilisés, immobiliser les ions métalliques toxiques du type mercure et plomb, et améliorer la qualité globale des biosolides pour les applications à la terre et la croissance végétale.

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