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EFFECTS OF NANOSIZED TITANIUM DIOXIDE (TiO2) AND FULLERENE (C60) ON WASTEWATER MICROORGANISMS ACTIVITY

Auwerter, LCC, Ouki, Sabeha, Asaadi, M and Shana, A (2017) EFFECTS OF NANOSIZED TITANIUM DIOXIDE (TiO2) AND FULLERENE (C60) ON WASTEWATER MICROORGANISMS ACTIVITY Journal of Water Process Engineering.

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Abstract

This paper investigates the impact of nano-TiO2 and fullerene (C60) on the activity of micro-organisms present in wastewater treatment works (WWTWs). Results showed that low concentration levels of nano-TiO2 (10 μg.L-1 ) and fullerene (1 μg.L-1 ) has little effect on both gas production and the microorganisms’ morphology. However higher concentrations of nano-TiO2 (100 and 1,000 μg.L-1 ) and fullerene (10 and 100 μg.L-1 ) reduced or stopped completely gas production. SEM micrographs showed that addition of nanoparticles reduced the microorganisms count up to 30 min of exposure, followed by an increase of selected micro-organisms after a 360 minutes exposure to TiO2 and Fullerene. Overall, this study demonstrates that engineered nanoparticle concentration levels and exposure time play an important role in the toxicity of microbial communities present in WWTWs. It also shows that under stressed conditions, the micro-organisms appear to protect themselves via a spore forming mechanism that allows them to survive the environment.

Item Type: Article
Subjects : Civil & Environmental Engineering
Divisions : Faculty of Engineering and Physical Sciences > Civil and Environmental Engineering
Authors :
NameEmailORCID
Auwerter, LCCUNSPECIFIEDUNSPECIFIED
Ouki, SabehaS.Ouki@surrey.ac.ukUNSPECIFIED
Asaadi, MUNSPECIFIEDUNSPECIFIED
Shana, AUNSPECIFIEDUNSPECIFIED
Date : 3 July 2017
Copyright Disclaimer : © 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 03 Jan 2017 16:47
Last Modified : 19 Jul 2017 07:35
URI: http://epubs.surrey.ac.uk/id/eprint/813188

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