Segregating wood and bark chips by photosorting.

John A. Sturos; Douglas B. Brumm

Treesearch

Segregating wood and bark chips by photosorting.

Informally Refereed

Authors:

John A. Sturos, Douglas B. Brumm

Year:

1978

Type:

Research Paper

Station:

Northern Research Station

Source:

Research Paper NC-164. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station

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Download (PDF 1.69 MB): https://research.fs.usda.gov/download/treesearch/10685.pdf

Abstract

Spectral transmittance measurements on aspen, sugar maple, and loblolly pine wood and bark chips resulted in peak wood-to-bark transmission ratio ranges from 10 to 50. Preliminary segregation results from an experimental photosorter indicate than 70 to 80% of the wood fiber can be recovered with less than a 2% bark content.

Keywords

chip quality, whole-treechips, pulpwood, optical density, spectral transmittance

Citation

Sturos, John A.; Brumm, Douglas B. 1978. Segregating wood and bark chips by photosorting. Research Paper NC-164. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station