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Bio-cleaning of nitrate salt efflorescence on stone samples using extremophilic bacteria
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Bio-cleaning of nitrate salt efflorescence on stone samples using extremophilic bacteria
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Journal Article
Bio-cleaning of nitrate salt efflorescence on stone samples using extremophilic bacteria
2019
Overview
For the first time, we propose the use of an extremophilic bacterium to remove nitrate salt efflorescence from the surfaces of stone samples. A haloalkaliphilic bacterium was selected “ad hoc” for its ability to reduce nitrates; i.e.
Halomonas campaniensis
sp. nov., strain 5AG
T
(DSM 15293
T
, ATCC BAA-966
T
). Quantitative monitoring of nitrate content, on untreated and treated surfaces of stone samples artificially enriched with nitrate, as a function of incubation/treatment time, was carried out by molecular spectroscopy. The results obtained reveal the good performance of
Halomonas campaniensis
bacterium in decreasing nitrate concentration on stone surfaces both in a controlled laboratory environment for temperature and relative humidity and in a real outdoor environmental conditions.
Publisher
Nature Publishing Group UK,Nature Publishing Group
