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Title
Influence of mechanical operation on the biodelignification of Eucalyptus tereticornis by Trametes versicolor
Authors
RICHA GUPTA VIPIN KUMAR SAINI R. P. BHATT B. P. THAPLIYAL and SANJAY NAITHANI
Received
October 5, 2012
Published
Volume 47 Issue 9-10 October-December
Keywords
biopulping, delignification, white rot fungi, lignin, cellulose
Abstract
In the biological pulping process, the removal of lignin can be achieved through treatment of lignocellulosic materials
with white rot fungi. The main biological challenge in biopulping is that fungal hyphae are not able to penetrate in the
core of the chips and only a surface phenomenon occurs. Therefore, the surface area of eucalyptus wood chips was
increased by passing through an impressafiner. An impressafiner compresses the chips and converts them into spongy
material. In the present study, biological pretreatment of eucalyptus non-destructured (chips) and destructured samples
(spongy) was carried out with Trametes versicolor. During the study, it was found that the lignin loss was
approximately 8.90% higher in the destructured samples, compared to the non-destructured samples, within 21 days
under optimum conditions. The fungal pretreatment decreased the kappa number of the treated destructured samples by
as much as 10.29 points, compared to the untreated non-destructured samples. Thus, the study has provided an insight
into economically feasible conditions to reduce pollution load.
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