Universität zu Köln

Lawton, E., Antczak, P., Walker, S., Germain-Cripps, E., Falciani, F. and Routledge, E. J. (2021). An investigation into the biological effects of indirect potable reuse water using zebrafish embryos. Sci. Total Environ., 789. AMSTERDAM: ELSEVIER. ISSN 1879-1026

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Abstract

Advanced treatment technologies are being assessed as a proactive measure to assist with the transformation of treated wastewater into a source of water for potable water production. We investigated the biological effects along an advanced water treatment pilot plant, using zebrafish embryos throughout early development. The study compared phenotypic observations with global transcriptome responses, enabling us to keep an open mind about the chemicals that might influence the biological activity. There was no evidence of acute toxicity at any treatment stage, but skeletal, cardiovascular and pigmentation changes occurred in a small proportion of embryos along the treatment process, and in a tap water; not detected in the aquarium water control. Reverse osmosis (RO) reduced the concentration of measured chemical contaminants in the water the most, while eliminating the occurrence of abnormalities detected in fish embryos. Conversely, advanced oxidation reversed the benefits of RO treatment by increasing the frequency of teratogenic and sub-lethal abnormalities seen. Using the molecular responses of zebrafish embryos to different IPR water, we report the bioactivity within the water at different stages of advanced treatment and associate these to perturbed biological functions. Transcriptomic analysis revealed alterations to the retinoid system, which was consistent with the observed teratogenic effects. Changes to tryptophan metabolism (associated with the production of rnelatonin required for the control of normal circadian rhythms) and somatolactin-beta (associated with normal pigmentation in fish) were also found. We show that underexplored forms of biological activity occur in treated wastewater effluent, and/or may be created depending on the type of advanced treatment process used. By integrating the available analytical chemistry we highlight chemical groups associated to this response. Our study shows that more detailed and in-depth characterisation of chemicals and biological pathways associated with advanced treatment water systems are needed to mitigate possible risks to downstream organisms. (C) 2021 The Authors. Published by Elsevier B.V.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Lawton, E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Antczak, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Walker, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Germain-Cripps, E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Falciani, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Routledge, E. J. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-586657
DOI:	10.1016/j.scitotenv.2021.147981
Journal or Publication Title:	Sci. Total Environ.
Volume:	789
Date:	2021
Publisher:	ELSEVIER
Place of Publication:	AMSTERDAM
ISSN:	1879-1026
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language RETINOIC ACID RECEPTOR; WASTE-WATER; VITAMIN-A; MELANOSOME AGGREGATION; DISRUPTING CHEMICALS; GENE-EXPRESSION; DRINKING-WATER; SOMATOLACTIN; METABOLISM; MODEL Multiple languages Environmental Sciences Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/58665