ASSESSING THE MORPHOMETRIC CHARACTERS AND BIOFUEL POTENTIAL OF APHANAMIXIS POLYSTACHYA
Loading...
Date
2015-07-15
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU
Abstract
The present study focuses on assessment of morphometric characteristics and biofuel potential of
Aphanamixis polystachya at 4 to 8 years old age classes. It was observed that the tree height
reaches to 8-10 m height but the stem diameter drastically increased with age class (R2= 0.959).
The canopy width, above ground biomass and carbon stock increased with age of the tree that
were 8.47 m, 0.41 t/tree, 0.19 t/tree respectively in 8th year old tree. The annual carbon increment
rate was highest during 7 years of growth (0.08t/tree). The morphometric parameters favored
Aphanamixis polystachya as an agroforestry tree. The oil content ranged from Aphanamixis
polystachya was 37.46-43.08% from 4 to 8 years of age classes. The quality of the oil was
determined by acid value, saponification value, iodine value, viscosity, density and calorific value
which were found to be 9.08-8.48 mgKOH/g, 227.46-163.31 mgKOH/g, 95.17-110.41 gI2/100g,
32.65-38.53 mm2/s, 919.20 kg/m3, 35.09-37.84 MJ/kg respectively. The biodiesel was produced
through acid esterification and transesterification processes. The biodiesel produced had acid
value (0.28-0.31 mgKOH/g), saponification value (246.33-171.99 mgKOH/g), iodine value
(85.26-95.20 gI2/100g), viscosity (4.13-4.6 mm2/s), density (876.97-887.29 Kg/m3), calorific
value (38.36-39.93MJ/kg), fire (165-168°C), flash (154-156°C) points and cloud(11-12°C), pour
(8-9°C) points comparable to standards. The nutritive value of deoiled cake was analyzed. The N
P K range were 2.18-3.39%, 0.22-0.29%, 0.58-0.67% respectively and make it as good organic
manure for agriculture. The study revealed that Aphanamixis polystachya may be considered as a
tree species for agroforestry and best candidate for the biodiesel production.
Description
Keywords
null