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Formulation and sta...
Formulation and stabilization of an Arthrobacter strain with good storage stability and 4-chlorophenol-degradation activity for bioremediation
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- Bjerketorp, Joakim (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för Molekylära vetenskaper,Department of Molecular Sciences,SLU Swedish University of Agricultural Sciences, Sweden
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- Röling, Wilfred F. M. (author)
- Vrije Universiteit Amsterdam, The Netherlands
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- Feng, Xinmei (author)
- RISE,Jordbruk och livsmedel
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- Garcia, Armando Hernández (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för Molekylära vetenskaper,Department of Molecular Sciences,SLU Swedish University of Agricultural Sciences, Sweden
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- Heipieper, Hermann J. (author)
- UFZ Helmholtz Centre for Environmental Research, Germany
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- Håkansson, Sebastian (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för Molekylära vetenskaper,Department of Molecular Sciences,SLU Swedish University of Agricultural Sciences, Sweden
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(creator_code:org_t)
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- 2018-01-18
- 2018
- English.
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In: Applied Microbiology and Biotechnology. - : Springer Science and Business Media LLC. - 0175-7598 .- 1432-0614. ; 102:4, s. 2031-2040
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https://urn.kb.se/re...
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Abstract
Subject headings
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- Chlorophenols are widespread and of environmental concern due to their toxic and carcinogenic properties. Development of less costly and less technically challenging remediation methods are needed; therefore, we developed a formulation based on micronized vermiculite that, when air-dried, resulted in a granular product containing the 4-chlorophenol (4-CP)-degrading Gram-positive bacterium Arthrobacter chlorophenolicus A6. This formulation and stabilization method yielded survival rates of about 60% that remained stable in storage for at least 3 months at 4 °C. The 4-CP degradation by the formulated and desiccated A. chlorophenolicus A6 cells was compared to that of freshly grown cells in controlled-environment soil microcosms. The stabilized cells degraded 4-CP equally efficient as freshly grown cells in two different set-ups using both hygienized and non-treated soils. The desiccated microbial product was successfully employed in an outdoor pot trial showing its effectiveness under more realistic environmental conditions. No significant phytoremediation effects on 4-CP degradation were observed in the outdoor pot experiment. The 4-CP degradation kinetics from both the microcosms and the outdoor pot trial were used to generate a predictive model of 4-CP biodegradation potentially useful for larger-scale operations, enabling better bioremediation set-ups and saving of resources. This study also opens up the possibility of formulating and stabilizing also other Arthrobacter strains possessing different desirable pollutant-degrading capabilities.
Subject headings
- NATURVETENSKAP -- Biologi -- Mikrobiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Microbiology (hsv//eng)
Keyword
- Arthrobacter
- Bioaugmentation
- Bioremediation
- Formulation
- Microbial stabilization
- Bacteria
- Biodegradation
- Biotechnology
- Cells
- Cytology
- Degradation
- Pollution
- Strain
- Bio-augmentation
- Carcinogenic properties
- Controlled environment
- Environmental concerns
- Environmental conditions
- Gram-positive bacterium
- Stabilization
Publication and Content Type
- ref (subject category)
- art (subject category)
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