Pressate from peat dewatering as a substrate for bacterial growth. [Rhizopus arrhizus; Xanthomonas campestris; Aureobasidium]

Journal Article · Mon Jul 01 00:00:00 EDT 1985 · Appl. Environ. Microbiol.; (United States)

OSTI ID:5301226

Mulligan, C N; Cooper, D G

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 inexpressed 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 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.

• Research Organization: McGill Univ., Montreal, Quebec
• OSTI ID: 5301226
• Journal Information: Appl. Environ. Microbiol.; (United States), Vol. 50:1
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
59 BASIC BIOLOGICAL SCIENCES
BACTERIA
GROWTH
PEAT
WASTE PRODUCT UTILIZATION
WATER REMOVAL
SURFACTANTS
BIOSYNTHESIS
EXPERIMENTAL DATA
RESOURCE POTENTIAL
SUBSTRATES
DATA
ENERGY SOURCES
FOSSIL FUELS
FUELS
INFORMATION
MICROORGANISMS
NUMERICAL DATA
ORGANIC MATTER
REMOVAL
SYNTHESIS
010500* - Coal
Lignite
& Peat- Products & By-Products
550700 - Microbiology