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A productivity and cost comparison of two systems for producing biomass fuel from roadside forest treatment residuesAuthor(s): Nathaniel Anderson; Woodam Chung; Dan Loeffler; John Greg Jones
Source: Forest Products Journal. 62(3): 222-233.
Publication Series: Scientific Journal (JRNL)
Station: Rocky Mountain Research Station
PDF: Download Publication (423.29 KB)
DescriptionForest operations generate large quantities of forest biomass residues that can be used for production of bioenergy and bioproducts. However, a significant portion of recoverable residues are inaccessible to large chip vans, making use financially infeasible. New production systems must be developed to increase productivity and reduce costs to facilitate use of these materials. We present a comparison of two alternative systems to produce biomass fuel (i.e., "hog fuel") from forest residues that are inaccessible to chip vans: (1) forwarding residues in fifth-wheel end-dump trailers to a concentration yard, where they can be stored and then ground directly into chip vans, and (2) grinding residues on the treatment unit and forwarding the hog fuel in high-sided dump trucks to a concentration yard, where it can be stored and then reloaded into chip vans using a frontend loader. To quantify the productivity and costs of these systems, work study data were collected for both systems on the same treatment unit in northern Idaho in July 2009. With standard machine rate calculations, the observed costs from roadside to loaded chip van were $23.62 per bone dry ton (BDT) for slash forwarding and $24.52 BDT 1 for in-woods grinding. Results indicate that for harvest units with conditions similar to the test area, slash forwarding is most appropriate for sites with dispersed residues and long-distance in-woods grinder mobilization. For sites with densely piled roadside residues, in-wood grinding is likely to be a more productive and less costly option for residue recovery.
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CitationAnderson, Nathaniel; Chung, Woodam; Loeffler, Dan; Jones, John Greg. 2012. A productivity and cost comparison of two systems for producing biomass fuel from roadside forest treatment residues. Forest Products Journal. 62(3): 222-233.
Keywordsforest biomass residues, biomass fuel
- Optimizing biomass feedstock logistics for forest residue processing and transportation on a tree-shaped road network
- Economic analysis of forest residues supply chain options to produce enhanced-quality feedstocks
- Forest biomass and wood waste resources
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