Biodegradation of toluene and fish oil in impacted soil using chemical and biological surfactants

Submitted by joice alvariz (joicealvariz@gmail.com) on 2012-01-05T16:08:19Z No. of bitstreams: 1 Biodegradação de tolueno e óleo de pescado em solos impactados utilizando surfactantes químico e biológico.pdf: 331082 bytes, checksum: bed437aa2b6ca4cdca978d5ee4fb08fb (MD5)Approved for entry into archive by Barbara Milbrath(barbaramilbrath@yahoo.com.br) on 2012-03-06T04:33:54Z (GMT) No. of bitstreams: 1 Biodegradação de tolueno e óleo de pescado em solos impactados utilizando surfactantes químico e biológico.pdf: 331082 bytes, checksum: bed437aa2b6ca4cdca978d5ee4fb08fb (MD5)Made available in DSpace on 2012-03-06T04:33:54Z (GMT). No. of bitstreams: 1 Biodegradação de tolueno e óleo de pescado em solos impactados utilizando surfactantes químico e biológico.pdf: 331082 bytes, checksum: bed437aa2b6ca4cdca978d5ee4fb08fb (MD5) Previous issue date: 2009The process of biodegradation of soils contaminated by animal (raw fish oil) and mineral (toluene) origin compounds was studied, verifying the influence of adding biosurfactants and chemical surfactants and nutrients in the media. The highest removal rate of fish oil was 59.47% obtained in the experiments containing biosurfactant and biostimulate in 90 days process. The highest removal rate of toluene was achieved in 14 days for experiments containing biosurfactant, chemical spreading and biosurfactant with biostimulation, showing great influence of evaporation on the process. The use of surfactants has shown to increase the contaminant bioavailability due to its higher degradation rate