Development and evaluation of a guayule debarker

Bedane, G. M., Gupta, M. L. and George, D. L. (2011). Development and evaluation of a guayule debarker. In: Marisol T. Berti, Thomas A. Rymsza, Dipak Santra, H. Rodolfo Juliani, Madan Gupta and Laura Marek, The Next Generation of Industrial Crops, Processes and Products AAIC 2009. Annual Meeting of the Association for the Advancement of Industrial Crops, Termas de Chillan, Chile, (1256-1261). 14-19 November 2009. doi:10.1016/j.indcrop.2010.05.017


Author Bedane, G. M.
Gupta, M. L.
George, D. L.
Title of paper Development and evaluation of a guayule debarker
Conference name Annual Meeting of the Association for the Advancement of Industrial Crops
Conference location Termas de Chillan, Chile
Conference dates 14-19 November 2009
Proceedings title The Next Generation of Industrial Crops, Processes and Products AAIC 2009   Check publisher's open access policy
Journal name Industrial Crops and Products   Check publisher's open access policy
Place of Publication Amsterdam, Netherlands
Publisher Elsevier
Publication Year 2011
Sub-type Fully published paper
DOI 10.1016/j.indcrop.2010.05.017
ISSN 0926-6690
1872-633X
Editor Marisol T. Berti
Thomas A. Rymsza
Dipak Santra
H. Rodolfo Juliani
Madan Gupta
Laura Marek
Volume 34
Issue 2
Start page 1256
End page 1261
Total pages 6
Collection year 2012
Language eng
Formatted Abstract/Summary
Guayule (Parthenium argentatum Gray) stores its rubber primarily within the cells of its bark, which constitutes only 30% of the dry weight of the whole shrub. Debarking guayule soon after harvesting at the crop site would substantially improve the efficiency of latex extraction technology by reducing transport costs to the processing plant and increasing the processing capacity of the latex extraction plant. The objective of this study was to design, fabricate and evaluate an efficient debarking machine for guayule. The bark removal unit consists of a pair of grooved rubber rollers rotating in opposite directions at different speeds, drawing and crushing the cut stems without chipping the core. The clearance between the rollers is adjustable and can handle different stem sizes ranging from 6 to 45 mm. The speed difference between the rollers creates a shearing action, required for peeling the bark. The separation unit consists of a fan attached to metal tubing, a discrimination chamber for grading processed material and a water trough where lighter material is removed by flotation. The debarking system was tested to determine bark removal performance as well as separation of bark from other processed plant material. A debarking efficiency of up to 95% and maximum separation efficiency of 75% were found from the evaluation. The prototype debarking machine produced a throughput capacity of up to 450 kg/h which can be increased by converting it to a full-size field machine.
Keyword Guayule
Bark
Debarking
Rollers
Separation
Latex
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Conference Paper
Collections: Official 2012 Collection
School of Agriculture and Food Sciences
 
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