Pulp and paper mill solid wastes as substrates for single-cell protein production

Journal Article · Sun Apr 01 00:00:00 EST 1979 · Biotechnol. Bioeng.; (United States)

DOI:https://doi.org/10.1002/bit.260210404· OSTI ID:6371470

Pamment, N; Robinson, C W; Moo-Young, M

We have investigated the upgrading of some typical pulp and paper mill solid wastes into protein-enriched animal feed using the cellulolytic fungus Chaetomium cellulolyticum. The waste residues used were six different primary clarifier sludges and a sample of tertiary centricleaner rejects. These were obtained from mills whose modes of operation spanned the range typically in present-day usage: groundwood, sulfite, semichemical, Kraft, and thermomechanical pulping, with and without bleaching. Crude protein production from the solid waste residues is compared to that obtainable from fermentation of untreated or caustic-pretreated sawdusts. Some of these waste residues, especially the Kraft pulp mill rejects, appear to be promising sources of substrate for single-cell protein production. In these preliminary findings, up to 28% dry weight crude protein content of the product has been obtained at specific growth rates of up to 0.12 hr/sup -1/ on direct utilization of the wastes.

• Research Organization: Univ. of Waterloo, Ontario, Canada
• OSTI ID: 6371470
• Journal Information: Biotechnol. Bioeng.; (United States), Vol. 21:4
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
PAPER INDUSTRY
WASTE PRODUCT UTILIZATION
SINGLE CELL PROTEIN
BIOSYNTHESIS
WOOD WASTES
ENZYMATIC HYDROLYSIS
ANIMAL FEEDS
FUNGI
PRODUCTIVITY
SLURRIES
SOLID WASTES
CHEMICAL REACTIONS
DECOMPOSITION
DISPERSIONS
FOOD
HYDROLYSIS
INDUSTRY
LYSIS
MIXTURES
PLANTS
SOLVOLYSIS
SUSPENSIONS
SYNTHESIS
WASTES
WOOD PRODUCTS INDUSTRY
550700* - Microbiology
320305 - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Industrial Waste Management