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Performance evaluation of Beads Drying System

KrishiKosh

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Title Performance evaluation of Beads Drying System
M.Tech.
 
Creator AKHOON ASRAR BASHIR
 
Contributor J. P Sinha
 
Subject ##Unable to generate tags t-83184.pdf
 
Description T-8808
Water status is important for all the living processes. In the living tissues,
water serves as a fluid medium and stabilizes the structures of macromolecules. The
moisture content is frequently higher (ranging 15-18%) at the time of harvest than
the optimum to obtain the best potential life of seed. Hence, it is necessary to reduce
the moisture content before storing the seed. Drying seeds and maintaining low seed
moisture content is critical in hot and humid climatic conditions. There are various
drying methods; ranging from sun drying to highly complex mechanical drying
system. Zeolite beads which are inert adsorbent materials were used for drying in this
study. Response Surface Methodology (RSM) was employed to optimize the
parameters of drying in central composite experimental design. The seed of tomato
cv. Pusa Ruby and onion cv. Nasik Dark Red with initial moisture content of 8.6 to
15.4% dry weight basis (d.b), were dried at five levels of residence time(1.3, 4, 8, 12,
14.7 h) and five levels of seed bead ratio(1:0.33, 1:0.5, 1:0.75, 1:1, 1:1.17).
The data from experiments was analyzed statistically using Design Expert 8.0.7.1
software and the response functions were developed using multiple regression
analysis and second order models were fitted for each response. Models were found
to be significant for all the response variables namely, Final moisture content (FMC),
Germination percentage (GP), vigour index-I (VI-I) and vigour index-II (VI-II) for
tomato seed. In case of onion, models were observed to be significant for FMC and
GP only. The optimum values of process variables were found to be1:0.5, 10.8 hours
and 11.84 percent, seed bead ratio, residence time and initial moisture content,
respectively for tomato seed. Seed bead ratio, residence time and initial moisture
content of 1:0.62, 6.52 and 13.62, respectively were found optimum for onion seed.
Keywords: Drying, Zeolite beads, response surface methodology, regeneration
 
Date 2016-08-17T11:59:51Z
2016-08-17T11:59:51Z
2013
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/72723
 
Format application/pdf
 
Publisher IARI, DIV. OF AGRICULTURAL ENGINEERING