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Mulligan CN, Cooper DG. Pressate from peat dewatering as a substrate for bacterial growth. Appl Environ Microbiol. 1985;50(1):160-2doi: 10.1128/aem.50.1.160-162.1985.
Mulligan, C. N., & Cooper, D. G. (1985). Pressate from peat dewatering as a substrate for bacterial growth. Applied and environmental microbiology, 50(1), 160-2. https://doi.org/10.1128/aem.50.1.160-162.1985
Mulligan, C N, and Cooper, D G. "Pressate from peat dewatering as a substrate for bacterial growth." Applied and environmental microbiology vol. 50,1 (1985): 160-2. doi: https://doi.org/10.1128/aem.50.1.160-162.1985
Mulligan CN, Cooper DG. Pressate from peat dewatering as a substrate for bacterial growth. Appl Environ Microbiol. 1985 Jul;50(1):160-2. doi: 10.1128/aem.50.1.160-162.1985. PMID: 16346834; PMCID: PMC238589.
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Appl Environ Microbiol. 1985 Jul;50(1):160-2. doi: 10.1128/aem.50.1.160-162.1985.

Pressate from peat dewatering as a substrate for bacterial growth.

Applied and environmental microbiology

C N Mulligan, D G Cooper

Affiliations

  1. Department of Chemical Engineering, McGill University, Montreal, Quebec, Canada H3A 2A7.

PMID: 16346834 PMCID: PMC238589 DOI: 10.1128/aem.50.1.160-162.1985

Abstract

This study considered the possibility of using water expressed during the drying of fuel-grade peat as a substrate for microbial growth. Highly humified peat pressed for 2.5 min at 1.96 MPa produced water with a chemical oxygen demand of 690 mg/liter. Several biological compounds could be produced by using the organic matter in expressed peat water as a substrate. These included polymers such as chitosan, contained in the cell wall of Rhizopus arrhizus, and two extracellular polysaccharides, xanthan gum and pullulan, produced by Xanthomonas campestris and Aureobasidium pullulans, respectively. A very effective surfactant was produced by Bacillus subtilis grown in the expressed water. Small additions of nutrients to the peat pressate were necessary to obtain substantial yields of products. The addition of peptone, yeast extract, and glucose improved production of the various compounds. Biological treatment improved the quality of the expressed water to the extent that in an industrial process it could be returned to the environment.

References

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