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Innovative DIY drinking water disinfection for underserved communities.
Ihsan, Taufiq; Johan, Erni; Fukugaichi, Satoru; Maruyama, Masafumi; Mitsunobu, Satoshi; Matsue, Naoto.
Afiliação
  • Ihsan T; The United Graduate School of Agricultural Sciences, Ehime University, 3-5-7 Tarumi, Matsuyama 790-8566, Japan; Department of Environmental Engineering, Faculty of Engineering, Andalas University, Limau Manis, Padang 25163, West Sumatra, Indonesia. Electronic address: taufiqihsan@eng.unand.ac.id.
  • Johan E; The United Graduate School of Agricultural Sciences, Ehime University, 3-5-7 Tarumi, Matsuyama 790-8566, Japan.
  • Fukugaichi S; Paper Industry Innovation Center, Ehime University, 3 Bunkyo-Cho, Matsuyama 790-8577, Japan.
  • Maruyama M; Department of Bioscience, Graduate School of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama 790-8566, Japan.
  • Mitsunobu S; The United Graduate School of Agricultural Sciences, Ehime University, 3-5-7 Tarumi, Matsuyama 790-8566, Japan.
  • Matsue N; The United Graduate School of Agricultural Sciences, Ehime University, 3-5-7 Tarumi, Matsuyama 790-8566, Japan.
Sci Total Environ ; 927: 172257, 2024 Jun 01.
Article em En | MEDLINE | ID: mdl-38608912
ABSTRACT
Waterborne pathogens threaten 2.2 billion people lacking access to safely managed drinking water services, causing over a million annual diarrheal deaths. Individuals without access to chlorine reagents or filtration devices often resort to do-it-yourself (DIY) methods, such as boiling or solar disinfection (SODIS). However, these methods are not simple to implement. In this study, we introduced an innovative and easily implemented disinfection approach. We discovered that immersing aluminum foil in various alkaline solutions produces alkali-treated aluminum foil (ATA foil) that effectively adsorbs Escherichia coli (E. coli), Salmonella, and Acinetobacter through the generated surface aluminum hydroxide. For example, a 25 cm2 ATA foil efficiently captures all 104E. coli DH5α strains in 100 mL water within 30 min. Using a saturated suspension of magnesium hydroxide, a type of fertilizer, as the alkaline solution, the properties of the saturated suspension eliminate the need for measuring reagents or changing solutions, making it easy for anyone to create ATA foil. ATA foils can be conveniently produced within mesh bags and placed in household water containers, reducing the risk of recontamination. Replacing the ATA foil with a foil improves the adsorption efficiency, and re-immersing the used foil in the production suspension restores its adsorption capacity. Consequently, ATA foil is an accessible and user-friendly alternative DIY method for underserved communities. Verification experiments covering variations in the water quality and climate are crucial for validating the efficacy of the foil. Fortunately, the ATA foil, with DIY characteristics similar to those of boiling and SODIS, is well-suited for testing under diverse global conditions, offering a promising solution for addressing waterborne pathogens worldwide.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Água Potável / Desinfecção / Purificação da Água Idioma: En Ano de publicação: 2024 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Água Potável / Desinfecção / Purificação da Água Idioma: En Ano de publicação: 2024 Tipo de documento: Article