Occurrence of Cryptosporidium and Giardia in sewage sludge and solid waste landfill leachate and quantitative comparative analysis of sanitization treatments on pathogen inactivation

Circulation of Cryptosporidum and Giardia in the environment can be facilitated by spreading of sewage sludge on agricultural or livestock grazing lands or depositing in landfills. Solid waste landfill leachate and sewage sludge samples were quantitatively tested for C. parvum and C. hominis oocysts...

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Bibliographic Details
Published in:Environmental research 2008, Vol.106 (1), p.27-33
Main Authors: Graczyk, Thaddeus K., Kacprzak, Malgorzata, Neczaj, Ewa, Tamang, Leena, Graczyk, Halshka, Lucy, Frances E., Girouard, Autumn S.
Format: Article
Language:English
Subjects:
Animals
Biological and medical sciences
Cryptosporidiosis
Cryptosporidium
Cryptosporidium - growth & development
Cryptosporidium - isolation & purification
Environmental contamination
Giardia
Giardia - growth & development
Giardia - isolation & purification
Human protozoal diseases
Infectious diseases
Landfill
Medical sciences
Microwaves
Parasitic diseases
Protozoal diseases
Refuse Disposal
Sanitary Engineering - methods
Sewage - parasitology
Sewage sludge
Sonication
Water Pollutants, Chemical - analysis
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Summary:Circulation of Cryptosporidum and Giardia in the environment can be facilitated by spreading of sewage sludge on agricultural or livestock grazing lands or depositing in landfills. Solid waste landfill leachate and sewage sludge samples were quantitatively tested for C. parvum and C. hominis oocysts, and G. lamblia cysts by the combined multiplexed fluorescence in situ hybridization (FISH) and immunofluorescent antibody (IFA) method. Subsequently, the effects of four sanitization treatments (i.e., ultrasound and microwave energy disintegrations, and quicklime and top-soil stabilization) on inactivation of these pathogens were determined. The landfill leachate samples were positive for Giardia, and sewage sludge samples for both Cryptosporididium and Giardia. The overall concentration of G. lamblia cysts (mean; 24.2/g) was significantly higher ( P
ISSN:0013-9351
1096-0953
DOI:10.1016/j.envres.2007.05.005