By: Lauren McDonnell
Two major sources of urban wood residue are the woody portion of municipal solid waste (MSW) and construction and demolition debris. Of the 62.1 million dry tons of urban wood residues generated annually, about 28.3 million …
Shredding Woody BIomass
Woody biomass that has been shredded at a central processing facility
By B. Jackson, R. Schroeder, and S. Ashton
Shredders are slow-speed rip/shear devices, used widely in tire shredding. Material is pinched between rotating devices and ripped apart or sheared. …
Short Rotation Woody Crops
By: S. Ashton
A stand of fast growing hybrid poplar.
Fast growing short rotation woody crops (SRWC), such as hybrid poplars, willows, and other species, are specifically grown to be an energy feedstock. The species of trees are often chosen …
Timber Harvest Residues
By: S. Ashton
Harvesting residues from Southeastern forestland.
Residues from forest harvesting operations include logging residues (i.e. branches, tops, and stumps) left on-site, low-quality commercially grown trees, dead wood, and other noncommercial tree species. Other residues include wood that has …
Two-pass Woody Biomass Harvesting Operations
Jump’s modified forwarder moving concentration of slash.
Case Study 1: Two-pass
One California landowning company developed a two-pass removal system in a sawtimber/biomass harvest that optimized equipment utilization and transportation logistics. In one district, Sierra Pacific Industries typically divides operations …
Concerns Over Greenhouse Gases
Wood, coal, oil and natural gas are all made of carbon-based compounds. Burning these feedstocks releases carbon, which then becomes carbon dioxide, a major greenhouse gas. The big difference between wood and fossil fuels is that the carbon released by …
Bundling Woody Biomass
John Deere 1490D Slash Bundler
By B. Jackson, EL. Taylor, R. Schroeder, and S. Ashton
One recent innovation involves the compaction of logging residues into cylindrical bales called composite residue logs (CRL) or biomass bundles (Johansson et al, 2006). CRLs …
Chipping Woody Biomass
B. Jackson, R. Schroeder, S. Ashton, and EL Taylor
Chippers are machines that cut material with a slicing action. They make up most of the woody biomass size-reduction equipment in use today and are characterized by high output, high speed …
Water Quality and Quantity
by Diomy Zamora and Charlie Blinn
Water is a universal resource that sustains life and is integral to maintaining productivity of the land. Biomass harvesting and utilization for energy can affect water quality and quantity. Water quantity is the timing …
Comparisons of In-Woods Densification Options in the Western Gulf
eXtension’s team of wood energy experts walk you through the various processing activities to forward woody biomass feed stocks to centralized processing stations in the Western Gulf region. Take a look!by Eric L. Taylor, A. Gordon Holley, and Mike …