Solar disinfection of drinking water contained in transparent plastic bottles : characterizing the bacterial inactivation process

  title={Solar disinfection of drinking water contained in transparent plastic bottles : characterizing the bacterial inactivation process},
  author={Mcguigan and Joyce and Conroy and Gillespie and Elmore‐Meegan},
  journal={Journal of Applied Microbiology},
A series of experiments is reported to identify and characterize the inactivation process in operation when drinking water, heavily contaminated with a Kenyan isolate of Escherichia coli, is stored in transparent plastic bottles that are then exposed to sunlight. The roles of optical and thermal inactivation mechanisms are studied in detail by simulating conditions of optical irradiance, water turbidity and temperature, which were recorded during a series of solar disinfection measurements… 

Solar disinfection for household treatment of roof-harvested rainwater

The effectiveness of solar disinfection in treating roof-harvested rainwater contaminated with microorganisms was evaluated with a view to its use as a household technology. Coliform and

Use of solar radiation for continuous water disinfection in isolated areas

Temperature was found to play an important role in the disinfection process, even in cases of limited solar radiation intensities, although a synergistic effect of water heating and solar radiation for effective microbial inactivation was confirmed.

Solar disinfection potentials of aqua lens, photovoltaic and glass bottle subsequent to plant-based coagulant: for low-cost household water treatment systems

Unaffordable construction cost of conventional water treatment plant and distribution system in most developing countries makes difficult to provide safe and adequate water for all households,

Feasibility of Solar Energy in Disinfection of Drinking Water in Iran

Results indicate that utilizing of both locally available bottles used in this study may have enough justification for SODIS process in non-urban areas and communities of Iran which mostly have warm climates.

Pilot study of water disinfection using solar concentrators in rural communities

The efficiency of solar disinfection for the inactivation of Total Coliforms (TC) and Escherichia coli (EC) in drinking water was tested in two pilot studies performed in rural communities of the

Solar disinfection of drinking water (SODIS): an investigation of the effect of UV-A dose on inactivation efficiency.

Results showed that inactivation from approximately 10(6) CFU mL(-1) to below the detection level for E. coli K-12, is a function of the total uninterrupted dose delivered to the bacteria and that the minimum dose should be >108 kJ m(-2) for the conditions described.


Background &Aims: Nowadays, application of low cost available methods for minimum treatment of surface waters for drinking in emergency conditions, and in conditions of non-available healthy water



Inactivation of fecal bacteria in drinking water by solar heating.

Simulation of the thermal effect of strong equatorial sunshine on water samples contaminated with high populations of fecal coliforms concludes that no bacterial recovery has occurred and the feasibility of employing solar disinfection for highly turbid, fecally contaminated water is discussed.

Solar water disinfection

Non-potable drinking water is a major problem for much of the world`s population. It has been estimated that from 15 to 20 million children under the age of 5 die from diarrheal conditions brought on

Pasteurization of naturally contaminated water with solar energy

A solar box cooker (SBC) was constructed with a cooking area deep enough to hold several 3.7-liter jugs of water, and this was used to investigate the potential of using solar energy to pasteurize


Disinfection of oral rehydration solutions by sunlight. [Letter]

It is concluded that this technique of solar irradiation of contaminated solutions will be effective and all types of containers were effective.

Effect of sunlight on survival of indicator bacteria in seawater

It is shown that sewage-borne bacteria were relatively resistant to the bactericidal effect of sunlight when diluted in fresh mountain stream waters, suggesting that the visible rather than the ultraviolet light spectrum of sunlight was primarily responsible for the observed bactericidaleffect.

Solar inactivation of faecal bacteria in water : the critical role of oxygen

  • R. Reed
  • Biology
    Letters in applied microbiology
  • 1997
The demonstration of an oxygen requirement for the inactivation of faecal bacteria in sunlight indicates that solar‐based water disinfection systems are likely to require fully aerobic conditions in order to function effectively.

Sunlight and the survival of enteric bacteria in natural waters.

Direct viable counts and culturable counts decreased at a similar rate in seawater and in freshwater in visible light and the presence of humic acids significantly reduced loss of culturability but only in low salinity conditions.

Visible light damage to Escherichia coli in seawater: oxidative stress hypothesis.

Hydrogen peroxide and hydroxyl radical seem to be reactive intermediates of oxygen-dependent (type II) photosensitized reactions, and desferrioxamine B, an iron chelator, was effective in reducing phototoxicity.