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Delignification and enhanced gas release from soil containing Lignocellulose by treatment with bacterial lignin degraders
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Rashid, Goran M. M., Duran-Pena, Maria Jesus, Rahmanpour, Rahman , Sapsford, Devin and Bugg, Tim (2017) Delignification and enhanced gas release from soil containing Lignocellulose by treatment with bacterial lignin degraders. Journal of Applied Microbiology, 123 (1). pp. 159-171. doi:10.1111/jam.13470
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Official URL: http://dx.doi.org/10.1111/jam.13470
Abstract
Aims
The aim of the study was to isolate bacterial lignin-degrading bacteria from municipal solid waste soil, and to investigate whether they could be used to delignify lignocellulose-containing soil, and enhance methane release.
Methods and Results
A set of 20 bacterial lignin degraders, including 11 new isolates from municipal solid waste soil, were tested for delignification and phenol release in soil containing 1% pine lignocellulose. A group of 7 strains were then tested for enhancement of gas release from soil containing 1% lignocellulose in small-scale column tests. Using an aerobic pre-treatment, aerobic strains such as Pseudomonas putida showed enhanced gas release from the treated sample, but four bacterial isolates showed 5-10 fold enhancement in gas release in an in situ experiment under microanaerobic conditions: Agrobacterium sp., Lysinibacillus sphaericus, Comamonas testosteroni, and Enterobacter sp..
Conclusions
The results show that facultative anaerobic bacterial lignin degraders found in landfill soil can be used for in situ delignification and enhanced gas release in soil containing lignocellulose.
Significance & impact of the study
The study demonstrates the feasibility of using an in situ bacterial treatment to enhance gas release and resource recovery from landfill soil containing lignocellulosic waste.
| Item Type: | Journal Article | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Subjects: | T Technology > TD Environmental technology. Sanitary engineering | ||||||||
| Divisions: | Faculty of Science > Chemistry | ||||||||
| Library of Congress Subject Headings (LCSH): | Organic wastes -- Biodegradation , Lignin, Sewage disposal in the ground , Landfill gases | ||||||||
| Journal or Publication Title: | Journal of Applied Microbiology | ||||||||
| Publisher: | Wiley-Blackwell Publishing Ltd. | ||||||||
| ISSN: | 1364-5072 | ||||||||
| Official Date: | July 2017 | ||||||||
| Dates: |
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| Volume: | 123 | ||||||||
| Number: | 1 | ||||||||
| Page Range: | pp. 159-171 | ||||||||
| DOI: | 10.1111/jam.13470 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||
| Funder: | Natural Environment Research Council (Great Britain) (NERC) | ||||||||
| Grant number: | NE/L013983/1 |
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