Comparative effectiveness of solar disinfection using small-scale batch reactors with reflective, absorptive and transmissive rear surfaces

Mani, Shibu K., Reed, Robert, Bright Singh, Isaac and Kanjur, Ranjit (2006) Comparative effectiveness of solar disinfection using small-scale batch reactors with reflective, absorptive and transmissive rear surfaces. Water Research, 40 (4). pp. 721-772. ISSN 0043-1354

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Official URL: http://dx.doi.org/10.1016/j.watres.2005.11.039

Abstract

This study investigated the enhancement of solar disinfection using custom-made batch reactors with reflective (foil-backed) or absorptive (black-backed) rear surfaces, under a range of weather conditions in India. Plate counts of Escherichia coli ATCC11775 were made under aerobic conditions and under conditions where reactive oxygen species (ROS) were neutralised, i.e. in growth medium supplemented with 0.05% w/v sodium pyruvate plus incubation under anaerobic conditions. While the addition of either an absorptive or a reflective backing enhanced reactor performance under strong sunlight, the reflective reactor was the only system to show consistent enhancement under low sunlight, where the process was slowest. Counts performed under ROS-neutralised conditions were slightly higher than those in air, indicating that a fraction of the cells become sub-lethally injured during exposure to sunlight to the extent that they were unable to grow aerobically. However, the influence of this phenomenon on the dynamics of inactivation was relatively small.

Item Type: Article
Subjects: C900 Others in Biological Sciences
Department: Faculties > Health and Life Sciences > School of Life Sciences > Applied Sciences
Depositing User: EPrint Services
Date Deposited: 06 Jan 2009 09:39
Last Modified: 10 Aug 2015 11:49
URI: http://nrl.northumbria.ac.uk/id/eprint/1844

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