DataVXAdvanced Sustainable SystemsPaper
journal article·2021-12

Rapid Catalytic Water Disinfection from Earth Abundant Ca2Fe2O5 Brownmillerite

Mārtiņš Vanags, Linda Mežule, Arnita Spule, Juris Kostjukovs, Krišjānis Šmits, Aile Tamm, Talis Juhna, Svetlana Vihodceva, Tanel Käämbre, Larisa Baumane, Dzintars Začs, Grigory Vasiliev, Maris Turks, Inese Mierina, Peter C. Sherrell, Andris Šutka

Advanced Sustainable Systems· Volume 5· Issue 12
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Source abstract

Abstract

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.
Source: crossref · Quality: baseline

Research context

Catalysis & surfaces

OpenAlex topics: Advanced Photocatalysis Techniques · TiO2 Photocatalysis and Solar Cells · Advanced oxidation water treatment

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Faculty of Materials Science and Applied Chemistry Riga Technical University P. Valdena 3 Riga LV1048 Latvia

Water Research and Environmental Biotehnology Laboratory Faculty of Civil Engineering Riga Technical University P. Valdena 1 Riga LV1048 Latvia

Department of Physical Chemistry University of Latvia Jelgavas 1 Riga LV1004 Latvia

Institute of Solid State Physics University of Latvia Kengaraga 8 Riga LV1063 Latvia

Institute of Physics University of Tartu W. Ostwaldi 1 Tartu 50411 Estonia

Latvian Institute of Organic Synthesis Aizkraukles 21 Riga LV1006 Latvia

Institute of Food Safety Animal Health and Environment “BIOR” Lejupes 3 Riga LV1076 Latvia

National Institute of Chemical Physics and Biophysics Laboratory of Environmental Toxicology Akadeemia tee 23 Tallinn 12618 Estonia

Department of Chemistry and Biotechnology School of Science, TalTech Akadeemia tee 15 Tallinn 12618 Estonia

Department of Chemical Engineering The University of Melbourne Parkville 3010 Australia

Funding

European Regional Development Fund

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