Effectiveness of solar disinfection for household water treatment: an experimental and modeling study

Solar disinfection (SODIS) is a simple and low-cost household water treatment (HWT) option used for disinfection of drinking water. In this study, the bacterial inactivation potential of SODIS was evaluated under the solar irradiance observed in different seasons in Bangladesh according to WHO evalu...

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Autores principales:	Md. Rezaul Karim, Md. Habibur Rahman Bejoy Khan, Md. Abu-Sa-Ad Akash, Shahriar Shams
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	bacterial inactivation pet bottle plastic bag safe exposure time solar disinfection (sodis) weibull model Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/1cac56cc4d064d7c9e8de4a4709bd207
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id	oai:doaj.org-article:1cac56cc4d064d7c9e8de4a4709bd207
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spelling	oai:doaj.org-article:1cac56cc4d064d7c9e8de4a4709bd2072021-11-05T19:31:51ZEffectiveness of solar disinfection for household water treatment: an experimental and modeling study2043-90832408-936210.2166/washdev.2021.243https://doaj.org/article/1cac56cc4d064d7c9e8de4a4709bd2072021-05-01T00:00:00Zhttp://washdev.iwaponline.com/content/11/3/374https://doaj.org/toc/2043-9083https://doaj.org/toc/2408-9362Solar disinfection (SODIS) is a simple and low-cost household water treatment (HWT) option used for disinfection of drinking water. In this study, the bacterial inactivation potential of SODIS was evaluated under the solar irradiance observed in different seasons in Bangladesh according to WHO evaluation protocol of HWT, and the SODIS experiments were conducted for both transmissive and reflective reactors using PET bottles and plastic bags. In summer, log reduction value (LRV) more than 5 was observed for the transmissive PET reactors for 6 to 8 hr exposure to sunlight and the treated water complied with the microbial standard of zero colony forming units/100 mL in drinking water. In monsoon and winter, LRV > 4 can be achieved for 16 hr and 8 hr exposure to sunlight, respectively, using reflective reactors. The plastic bag was found to be more effective than PET. A safe exposure time was estimated from the Weibull model to be maintained for SODIS application to achieve 4.0 LRV and also to prevent the re-growth of microorganisms in the treated water. A significant re-growth of microorganisms was observed in the treated water, thus SODIS with other HWT processes can be recommended for use in communities with an unsafe drinking water supply. HIGHLIGHTS Address the effectiveness of SODIS under the local irradiance observed in Bangladesh.; Used both reflective and transmissive reactors.; Complete inactivation achieved under strong sunlight condition.; Reflective reactors are more effective.; A safe exposure time was estimated.;Md. Rezaul KarimMd. Habibur Rahman Bejoy KhanMd. Abu-Sa-Ad AkashShahriar ShamsIWA Publishingarticlebacterial inactivationpet bottleplastic bagsafe exposure timesolar disinfection (sodis)weibull modelEnvironmental technology. Sanitary engineeringTD1-1066ENJournal of Water, Sanitation and Hygiene for Development, Vol 11, Iss 3, Pp 374-385 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	bacterial inactivation pet bottle plastic bag safe exposure time solar disinfection (sodis) weibull model Environmental technology. Sanitary engineering TD1-1066
spellingShingle	bacterial inactivation pet bottle plastic bag safe exposure time solar disinfection (sodis) weibull model Environmental technology. Sanitary engineering TD1-1066 Md. Rezaul Karim Md. Habibur Rahman Bejoy Khan Md. Abu-Sa-Ad Akash Shahriar Shams Effectiveness of solar disinfection for household water treatment: an experimental and modeling study
description	Solar disinfection (SODIS) is a simple and low-cost household water treatment (HWT) option used for disinfection of drinking water. In this study, the bacterial inactivation potential of SODIS was evaluated under the solar irradiance observed in different seasons in Bangladesh according to WHO evaluation protocol of HWT, and the SODIS experiments were conducted for both transmissive and reflective reactors using PET bottles and plastic bags. In summer, log reduction value (LRV) more than 5 was observed for the transmissive PET reactors for 6 to 8 hr exposure to sunlight and the treated water complied with the microbial standard of zero colony forming units/100 mL in drinking water. In monsoon and winter, LRV > 4 can be achieved for 16 hr and 8 hr exposure to sunlight, respectively, using reflective reactors. The plastic bag was found to be more effective than PET. A safe exposure time was estimated from the Weibull model to be maintained for SODIS application to achieve 4.0 LRV and also to prevent the re-growth of microorganisms in the treated water. A significant re-growth of microorganisms was observed in the treated water, thus SODIS with other HWT processes can be recommended for use in communities with an unsafe drinking water supply. HIGHLIGHTS Address the effectiveness of SODIS under the local irradiance observed in Bangladesh.; Used both reflective and transmissive reactors.; Complete inactivation achieved under strong sunlight condition.; Reflective reactors are more effective.; A safe exposure time was estimated.;
format	article
author	Md. Rezaul Karim Md. Habibur Rahman Bejoy Khan Md. Abu-Sa-Ad Akash Shahriar Shams
author_facet	Md. Rezaul Karim Md. Habibur Rahman Bejoy Khan Md. Abu-Sa-Ad Akash Shahriar Shams
author_sort	Md. Rezaul Karim
title	Effectiveness of solar disinfection for household water treatment: an experimental and modeling study
title_short	Effectiveness of solar disinfection for household water treatment: an experimental and modeling study
title_full	Effectiveness of solar disinfection for household water treatment: an experimental and modeling study
title_fullStr	Effectiveness of solar disinfection for household water treatment: an experimental and modeling study
title_full_unstemmed	Effectiveness of solar disinfection for household water treatment: an experimental and modeling study
title_sort	effectiveness of solar disinfection for household water treatment: an experimental and modeling study
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/1cac56cc4d064d7c9e8de4a4709bd207
work_keys_str_mv	AT mdrezaulkarim effectivenessofsolardisinfectionforhouseholdwatertreatmentanexperimentalandmodelingstudy AT mdhabiburrahmanbejoykhan effectivenessofsolardisinfectionforhouseholdwatertreatmentanexperimentalandmodelingstudy AT mdabusaadakash effectivenessofsolardisinfectionforhouseholdwatertreatmentanexperimentalandmodelingstudy AT shahriarshams effectivenessofsolardisinfectionforhouseholdwatertreatmentanexperimentalandmodelingstudy
_version_	1718444024018239488

Effectiveness of solar disinfection for household water treatment: an experimental and modeling study

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