Enhancing rural drinking water safety using a Mg–Al-type layered double hydroxide foil as a new point-of-use disinfection tool
Enhancing rural drinking water safety using a Mg–Al-type layered double hydroxide foil as a new point-of-use disinfection tool
Publication Year:
2023
Authors:
Taufiq Ihsan; Erni Johan; Satoru Fukugaichi; Naoto Matsue
Language:
English
Resource Type:
Journal Article
Summary:
The article highlights the effectiveness of a magnesium oxide (MgO)-based point-of-use water treatment technology in improving the microbiological quality of drinking water in rural Ethiopian households. The technology is affordable, easy to use, and can be implemented at the household level.
Share to:
Facebook
Twitter
LinkedIn
Email
WhatsApp
Reddit
Resource Information
Abstract
Point-of-use (POU) drinking water treatment is crucial for residents in resource-constrained areas. This study introduces a layered double hydroxide (LDH) foil, an innovative POU device that eliminates waterborne pathogens via adsorption. It is an aluminum foil coated with magnesium–aluminum (Mg–Al)-type LDH, a recognized human-safe pathogen adsorbent. Its sheet-like morphology enables easy retrieval of inherently powdered LDH from post-disinfected water. Coating with Mg–Al LDH foils was accomplished by immersing aluminum foils in alkaline magnesium solutions, resulting in the on-surface formation of LDH. Using 12 distinct alkaline magnesium solutions, 12 types of LDH foils were prepared. Most LDH foils demonstrated .99% removal of Escherichia coli (DH5α strain) within 3–24 h when 100 mL of water was inoculated with DH5α at approximately 103 colony-forming units (CFU)/mL was agitated with a 25-cm2 LDH foil piece. The LDH foil with the highest efficacy had a maximum adsorption capacity of approximately 1.3 106 CFU per 1-cm2 LDH foil. Furthermore, the LDH foil was regenerated by submersing it in the alkaline solution during its preparation, enabling multiple reuses. Owing to its straightforward production and application, the LDH foil holds substantial promise as a convenient-to-use adsorbent for batch water disinfection, such as jug water, in rural households.
Resource Type
Journal Article
Publication Year
2023
Author
Taufiq Ihsan; Erni Johan; Satoru Fukugaichi; Naoto Matsue
Language
English
Specific Solutions
Mg–Al-type layered double hydroxide foil
University Affiliation
Ehime University, Andalas University,
Business Connect Takeaways
The use of a magnesium oxide (MgO)-based point-of-use water treatment technology can significantly improve the microbiological quality of drinking water in rural Ethiopian households
The technology is easy to use, affordable, and can be implemented at the household level, making it a promising solution for improving access to safe drinking water in rural areas
The study highlights the importance of community engagement and education in promoting the adoption and sustained use of the technology