International Journal of Innovation and Applied Studies
ISSN: 2028-9324     CODEN: IJIABO     OCLC Number: 828807274     ZDB-ID: 2703985-7
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Fate of pathogenic parasites in sewage sediments and environmental components

Volume 21, Issue 3, October 2017, Pages 410–417

 Fate of pathogenic parasites in sewage sediments and environmental components

Omar Amahmid1, Souad Asmama2, and Khadija Bouhoum3

1 Department of Life and Earth Sciences, Regional Centre for Careers of Education and Training, CRMEF Marrakesh, Morocco
2 Laboratory of Biomedical Analysis, Ibn Tofail Hospital, CHU Mohamed VI, Marrakesh, Morocco
3 Laboratory of Hydrobiology, Ecotoxicology and Sanitation (LHEA) Dept. of Biology, Faculty of Sciences Semlalia. University Cadi Ayyad, Marrakesh, Morocco

Original language: English

Received 14 March 2017

Copyright © 2017 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The purpose of the current study was the assessment of the persistence of Ascaris eggs and Giardia cysts in sewage products and environmental components commonly implicated in the transmission of these pathogen parasites. In fact, wastewater and sewage sediments reuse for agricultural purposes has the potential to contaminate water supplies, soil and crops. The ability of parasites cysts to persist in the environment may threaten public health. So, destruction rates of parasite cysts and eggs in stored sediments, crops and soil were examined to help understand the fate of these agents in sewage products and environmental components. In lagoon stored sewage sediments, Ascaris eggs disappeared after approximately 180 days of storage versus 49 days for sediments stored under ambient laboratory conditions, and less than 18 days in dried sediments. Giardia cysts persisted less than one month lagoon-stored sediments, up to 24 days under laboratory conditions and less than 9 days in dried sediments. For parasites persistence on crops, Ascaris eggs persisted on lucerne for 6 days while Giardia cysts have not been detected for longer periods than 3 days after contamination. In soil, Ascaris eggs were not isolated in periods greater than 90 days, while Giardia cysts were not discovered 3 days after contamination induced by wastewater.

Author Keywords: Ascaris, Giardia, persistence, storage, drying, sewage sediments, soil, crops.

How to Cite this Article

Omar Amahmid, Souad Asmama, and Khadija Bouhoum, “Fate of pathogenic parasites in sewage sediments and environmental components,” International Journal of Innovation and Applied Studies, vol. 21, no. 3, pp. 410–417, October 2017.