Microbial removal of Fe(III) impurities from clay using dissimilatory iron reducers

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Fe(III) impurities, which detract refractoriness and whiteness from porcelain and pottery, could be biologically removed from low-quality clay by indigenous dissimilatory Fe(III)-reducing microorganisms. Insoluble Fe(III) in clay particles was leached out as soluble Fe(II), and the Fe(III) reduction reaction was coupled to the oxidation of sugars such as glucose, maltose and sucrose. A maximum removal of 44-45% was obtained when the relative amount of sugar was 5% (w/w; sugar/clay). By the microbial treatment, the whiteness of the clay was increased from 63.20 to 79.64, whereas the redness was clearly decreased from 13.47 to 3.55.
Publisher
SOC BIOSCIENCE BIOENGINEERING JAPAN
Issue Date
1999-03
Language
English
Article Type
Article
Keywords

MANGANESE REDUCTION; ORGANIC-MATTER; SEDIMENTS; MICROORGANISM; OXIDATION

Citation

JOURNAL OF BIOSCIENCE AND BIOENGINEERING, v.87, no.3, pp.397 - 399

ISSN
1389-1723
URI
http://hdl.handle.net/10203/74049
Appears in Collection
CBE-Journal Papers(저널논문)
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