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Thippi Compost: A Possible Avenue for Cassava Starch Factory Solid Waste Management

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Title Thippi Compost: A Possible Avenue for Cassava Starch Factory Solid Waste Management
Not Available
 
Creator S. Chithra, K. Susan John and M. Manikantan Nair
 
Subject Thippi, cassava, compost, C:N ratio, earthworm
 
Description Not Available
In India, cassava cultivation is mostly confined to South India. In Tamil Nadu, cassava tubers are used
as an industrial raw material for starch and sago production. About 8-10 large scale starch factories
and 150-200 small scale starch and sago production units in Tamil Nadu are producing around 40-
60 tonnes of solid waste (thippi) per annum creating serious environmental pollution. The present
study was undertaken to explore the possibility of managing the waste by composting it into a nutrient
rich organic manure. A representative composite thippi sample was made from different lots of the
samples collected from the cassava starch factory premises in Tamil Nadu. Physico-chemical,
biochemical and microbiological analysis of thippi revealed that it has high water holding capacity
(89%), good porosity (94.6%) and low bulk density (0.58 g cm-3). Thippi was acidic in nature with very
low nutrient content and very high C:N ratio (82:1), which makes it unsuitable as a manure. Hence it
was enriched with cheap and easily available nutrient rich sources like cassava leaves/Gliricidia leaves/
Azolla for N, apart from cow dung, P and K sources viz., Mussooriephos and rock powder respectively
involving three different composting agents viz., microbial consortium containing Trichoderma, P and
K solubilisers, waste management culture and earthworm (Eudrilus eugeniae). Composting was done
on a pilot scale for a period of two months with nine treatment combinations. The mean N, P, K, Ca,
Mg, Fe, Cu and Mn contents of thippi compost was 1.32%, 3.82%, 0.4%, 2.18%, 0.96%, 1.11%,
0.08%, 11.23 ppm and 89.93 ppm respectively, which is 3.5, 49, 7, 3.25, 8.1, 185, 100, 2.5 and
12 times than that in thippi. Starch, cellulose and C:N ratio in thippi compost were reduced but
protein was enhanced considerably without any cyanide and fibre contents. Among the treatment
combinations, thippi enriched with cow dung, cassava leaves and Gliricidia leaves along with
Mussooriephos and rock powder composted by earthworm was found to be the best.
Not Available
 
Date 2021-08-06T04:02:02Z
2021-08-06T04:02:02Z
2013-12-31
 
Type Article
 
Identifier Not Available
0378-2409
http://krishi.icar.gov.in/jspui/handle/123456789/53319
 
Language English
 
Relation Not Available;
 
Publisher Indian Society for Root Crops