Open AccessApplication of mutagenic treatment of active silt for oxidation of cellulose nitrate
Author(s) -
Е. А. Саратовских,
Л. В. Авдеева,
V. A. Shcherbakova,
A. I. Kazakov,
R. N. Yarullin
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/848/1/012053
Subject(s) - nitrate , chemistry , cellulose , microorganism , biodegradation , environmental chemistry , fusarium solani , incubation , sulfate , decomposition , nuclear chemistry , food science , bacteria , organic chemistry , microbiology and biotechnology , biochemistry , biology , genetics
The oxidation of native cellulose nitrate (13.38% N) and cellulose nitrate (CN) treated with UV radiation and ozone (UV+ozone) by a biocenosis of microorganisms of active silt (AS) from sewage disposal plants and by a combination of AS with sulfate-reducing bacteria Desulfovibrio desulfuricans BKM B-1388 and microscopic fungi Fusarium solani BKM F-819 was studied. The use of the preliminary treatment significantly increased the degree of decomposition of CN during its subsequent biodegradation by a symbiosis of AS microorganisms with D. desulfuricans and F. solani . The application of the mutagenic treatment of AS with nitrosomethylurea (NMU) allows the biocenosis of AS microorganisms with CN acting as a pollutant to retain high oxidation ability with good sedimentation properties for 65 days of incubation. The degree of decomposition was 24.36%. Substantial parameters were achieved during the incubation period of treated CN (CN treat ) within the first 5 days, which is promising from the point of view of practical use.