Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Rapid Catalytic Water Disinfection from Earth Abundant Ca2Fe2O5 Brownmillerite

Rapid Catalytic Water Disinfection from Earth Abundant Ca2Fe2O5 Brownmillerite Water disinfection is a crucial challenge for humanity. Approaches that are effective, cheap, environmentally friendly, and do not promote gene exchange between bacteria are urgently required. Strongly oxidizing radicals are highly promising to achieve this as they lead to bacterial activation at high efficiencies. However, sources to consistently generate these radicals are limited to high energy UV/H2O2 treatments requiring a large energy input. Here the use of abundant, cheap, brownmillerite (Ca2Fe2O5) is demonstrated as an efficient radical generation material under dark conditions, showing a seven order of magnitude decrease in bacterial concentration over 10 min. This decrease is attributed to the release of interlayer Ca2+ from the layered structure of Ca2Fe2O5 and hydroxyl radical generation. The efficacy of Ca2Fe2O5 is demonstrated by disinfecting turbid sewage sludge. The identification of this cheap, abundant, and nontoxic antibacterial material will provide an opportunity for broad scale clean water generation globally, and address the United Nations’ Sustainable Development Goal of clean water and sanitation. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Advanced Sustainable Systems Wiley

Loading next page...
 
/lp/wiley/rapid-catalytic-water-disinfection-from-earth-abundant-ca2fe2o5-9nFiKPsXmR

References (53)

Publisher
Wiley
Copyright
© 2021 Wiley‐VCH GmbH
eISSN
2366-7486
DOI
10.1002/adsu.202100130
Publisher site
See Article on Publisher Site

Abstract

Water disinfection is a crucial challenge for humanity. Approaches that are effective, cheap, environmentally friendly, and do not promote gene exchange between bacteria are urgently required. Strongly oxidizing radicals are highly promising to achieve this as they lead to bacterial activation at high efficiencies. However, sources to consistently generate these radicals are limited to high energy UV/H2O2 treatments requiring a large energy input. Here the use of abundant, cheap, brownmillerite (Ca2Fe2O5) is demonstrated as an efficient radical generation material under dark conditions, showing a seven order of magnitude decrease in bacterial concentration over 10 min. This decrease is attributed to the release of interlayer Ca2+ from the layered structure of Ca2Fe2O5 and hydroxyl radical generation. The efficacy of Ca2Fe2O5 is demonstrated by disinfecting turbid sewage sludge. The identification of this cheap, abundant, and nontoxic antibacterial material will provide an opportunity for broad scale clean water generation globally, and address the United Nations’ Sustainable Development Goal of clean water and sanitation.

Journal

Advanced Sustainable SystemsWiley

Published: Dec 1, 2021

Keywords: antibacterial; brownmillerites; catalysis; structural transformation; water disinfection

There are no references for this article.