Universität zu Köln

Andalib, Saeid, Rahimi, Hanieh Mohammad, Niyyati, Maryam, Shalileh, Farzaneh, Nemati, Sara, Rouhani, Soheila, Zali, Mohammad Reza, Mirjalali, Hamed and Karanis, Panagiotis (2022). Free-living amoebae in an oil refinery wastewater treatment facility. Sci. Total Environ., 839. AMSTERDAM: ELSEVIER. ISSN 1879-1026

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Abstract

Free Living Amoebae (FLA) are ubiquitous microorganisms reported from harsh environmental conditions. Oil refinery facilities consume vast volumes of water during their processes, generating a large amount of wastewater. The present study aimed to evaluate the wastewater treatment process in an oil refinery wastewater treatment facility (ORWWTF) for the presence of FLA. Water samples were collected from an oil refinery wastewater (ORWW) for nine months. After recording physical-chemical features, samples were cultivated onto non-nutrient agar (NNA). The discriminative fragments of the ribosomal RNA (rRNA) gene were amplified and sequenced to characterize the isolated FLA. Phylogenetic tree, and network analysis were employed to evaluate genetic relationships. The thermo-and osmotolerant tests were performed on the isolated FLA. Twenty-five (32.9%) samples were positive for FLA cultivation. Acanthamoeba spp., Vahlkampfiids, and Vermamoeba spp. were detected, of which Acanthamoeba species were predominant. There was no statistical correlation between pH, NH3, PO4, H2S, and TDS with the presence of FLA. A statistical correlation between the presence of FLA and the type of wastewater treatment plants (WWTPs) was significant (P-value = 0.011). All Acanthamoeba spp. isolates belonged to the genotypes T4 (17/21; 80.95%) and T11 (4/21; 19.05%). Vahlkampfiids were Naegleria spp., (7/10; 70%), Tetramitus aberdonicus (1/10; 10%), Learamoeba spp., (1/10; 10%), and Vahlkampfia spp., (1/10; 10%). All three Vermamoeba spp. were V. vermiformis. The ORWW contains toxic materials, and a few microorganisms can stay active in these environments. This is the first study which isolates FLA from such super harsh conditions. For the first time, T. aberdonicus, and Learamoeba spp., were isolated from oily wastewater. Our findings signify the concern due to the distribution of potentially pathogenic FLA to downstream lands via treated wastewater that may be released after treatment processing.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Andalib, Saeid UNSPECIFIED UNSPECIFIED UNSPECIFIED Rahimi, Hanieh Mohammad UNSPECIFIED UNSPECIFIED UNSPECIFIED Niyyati, Maryam UNSPECIFIED UNSPECIFIED UNSPECIFIED Shalileh, Farzaneh UNSPECIFIED UNSPECIFIED UNSPECIFIED Nemati, Sara UNSPECIFIED UNSPECIFIED UNSPECIFIED Rouhani, Soheila UNSPECIFIED UNSPECIFIED UNSPECIFIED Zali, Mohammad Reza UNSPECIFIED UNSPECIFIED UNSPECIFIED Mirjalali, Hamed UNSPECIFIED UNSPECIFIED UNSPECIFIED Karanis, Panagiotis UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-671970
DOI:	10.1016/j.scitotenv.2022.156301
Journal or Publication Title:	Sci. Total Environ.
Volume:	839
Date:	2022
Publisher:	ELSEVIER
Place of Publication:	AMSTERDAM
ISSN:	1879-1026
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language BALAMUTHIA-MANDRILLARIS; ACANTHAMOEBA GENOTYPES; BACTERIAL COMMUNITY; IDENTIFICATION; NAEGLERIA; GENUS; TETRAMITUS; RESISTANCE; KERATITIS; CYSTS Multiple languages Environmental Sciences Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/67197