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

journal contribution
posted on 2017-12-06, 00:00 authored by S Mani, R Kanjur, I Singh, Robert ReedRobert Reed
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 are flective backing enhanced reactor performance under strong sunlight, the reflectivere actor 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.

History

Volume

40

Start Page

721

End Page

727

Number of Pages

7

ISSN

0043-1354

Location

United Kingdom

Publisher

Pergamon

Language

en-aus

Peer Reviewed

  • Yes

Open Access

  • No

External Author Affiliations

Cochin University of Science and Technology; University of Northumbria at Newcastle;

Era Eligible

  • Yes

Journal

Water research.

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