PRASANNA, K.TGAYATHRI, THARMAKUNASINGAM2017-08-052017-08-052015-07-15Th-11129http://krishikosh.egranth.ac.in/handle/1/5810027518The 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.ennullThesis