Improving Woody Biomass Feedstock Logistics by Reducing Ash and Moisture Content |
| |
Authors: | W Dale Greene Jason B Cutshall C Cory Dukes Shawn A Baker |
| |
Institution: | 1. Center for Forest Business, Warnell School of Forestry and Natural Resources, University of Georgia, Athens, GA, 30602-2152, USA 2. Forest Industry Consultant, PO Box 80222, Starkville, 39759, MS, USA 3. Forest Investment Analyst, Timberland Investment Resources, 115 Perimeter Center Place, Ste. 940, Atlanta, GA, 30346, USA
|
| |
Abstract: | We examined two practical methods for reducing moisture content and/or ash content in biomass from southern pine harvests. Logging residues are a potential bioenergy feedstock, but contaminants can increase ash content during collection. We found that trommel screens can reduce ash levels in grindings from southern pine roundwood and clean chipped logging residues from 4.0 to 1.4 % and 11.9 to 6 %, respectively. Green whole-tree chips are a widely used form of forest biomass, but are 50 % moisture. Felling and transpirationally drying in-field before chipping reduced moisture from 53 to 43 % and 39 % in 4 and 8 weeks, respectively, without changing ash content (<0.7 %). Finally, we used data from the screening and drying studies in a simulation study to estimate delivered costs for whole-tree chipping and screened and unscreened grinders processing logging and clean chip residue. Whole-tree chipping provided the lowest cost option at ash content levels less than 1 %, and unscreened grinding of clean chip residue produced the least expensive option at 5 % ash. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|