Investigation of acrylonitrile and nano-silver-titanium acrylic fibers bio-degradation

Polyacrylic fibers which contain 85% acrylonitrileandnano sliver-titanium can be used as antibacterial fibers in textile industry. After consuming these fibers, they can disperse in the environment and become harmful for soil bacteria. Biodegradation of these fibers can be a suitable approach for the removal of these Asnano-silver-titanium was used in the fibers. The microorganisms which were resistant to the nano particle were isolated and biodegradation of the monomer and polymer were investigated. PHGII medium with 50ppm concentration of nano particle (p105) was used for isolating resistant microorganisms. The resistant microorganisms were then inoculated in BPM medium with 1007 ppm acrylonitrile concentration and the degradation of acrylonitrile was investigated by GC. Finally the degradation of acrylic fibers in BPM for the production of acrylic acid was investigated by HPLC. In this study, Kluyvera georgiana was isolated from sludge of Isfahan polyacryl plant that was resistant to 50 ppm nano-silver-titanium (p105) and degraded 969.9 ppm acrylonitrile whilst the bacterium did not degrade the fibers.