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Microbiological consequences of indoor composting
Author(s) -
Naegele A.,
Reboux G.,
Vacheyrou M.,
Valot B.,
Millon L.,
Roussel S.
Publication year - 2016
Publication title -
indoor air
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.387
H-Index - 99
eISSN - 1600-0668
pISSN - 0905-6947
DOI - 10.1111/ina.12242
Subject(s) - bioaerosol , cladosporium , penicillium , environmental science , contamination , green waste , aspergillus versicolor , indoor bioaerosol , waste management , municipal solid waste , compost , indoor air , toxicology , environmental chemistry , aspergillus , environmental engineering , food science , biology , chemistry , microbiology and biotechnology , aerosol , engineering , ecology , organic chemistry
Recycling of organic waste appeals to more and more people. The aim of this study was to evaluate the microbiological contamination around organic waste bins at three distances over a 12‐month period. Contamination near the customary trash of control households was evaluated at the beginning to ensure that there is no recruitment bias. Air samples using the MAS 100 impactor were carried out in 38 dwellings that do household waste composting and in 10 dwellings of controls. Collection of particles by CIP 10 rotating cup sampler and dust samples collected by electrostatic dust collector cloths were acquired in dwellings that do household waste composting. Samples were analyzed by culture and by real‐time quantitative PCR . Information about dwelling characteristics and inhabitant practices was obtained by a standardized questionnaire. The genera most often isolated were Penicillium , Aspergillus , Cladosporium and Streptomyces . Near the organic waste bins, bioaerosol samples showed an increase of Acarus siro ( P = 0.001). Sedimented dust analyses highlighted an increase of A. siro , Wallemia sebi , Aspergillus versicolor , and Cladosporium sphaerospermum concentrations after a 12‐month survey compared to the beginning. Composting favors microorganism development over time, but does not seem to have an effect on the bioaerosol levels and the surface microbiota beyond 0.5 m from the waste bin.