Bright Singh, I S; Rojith, G(International Science Congress Association, 2012)
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Abstract:
Coir pith black liquor obtained as a dark brown filtrate from oxidative delignification needs to be decolourised before releasing
to open environment. From this liquor industrially valuable lignin was recovered using acid precipitation method. ‘Biochar’
was produced by slow pyrolysis of coir pith at 500oC and 600oC. Water holding capacity and pH of the biochar were estimated.
CHNS analysis was carried out to identify the nutrient profile. Structural characterization was done using FTIR and SEM
Studies. Biochar produced at 600oC was found to be more suitable for decolourisation of the coir pith black liquor. FTIR
analysis indicated peak changes while SEM analysis indicated surface area and porosity changes. Biochar decolourisation
experiments were carried out on crude coir pith black liquor and also on lignin recovered coir pith black liquor.
Description:
Research Journal of Recent Sciences
Vol. 1 (ISC-2011), 270-274 (2012)
Abesh, Reghuvaran; Dr. Anita Das, Ravindranath(Cochin University of Science And Technology, April , 2013)
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Abstract:
In this study, a novel improved technology could be developed to convert
the recalcitrant coir pith into environmental friendly organic manure. The standard
method of composting involves the substitution of urea with nitrogen fixing
bacteria viz. Azotobacter vinelandii and Azospirillum brasilense leading to the
development of an improved method of coir pith. The combined action of the
microorganisms could enhance the biodegradation of coir pith. In the present study,
Pleurotus sajor caju, an edible mushroom which has the ability to degrade coir
pith, and the addition of nitrogen fixing bacteria like Azotobacter vinelandii and
Azospirillum brasilense could accelerate the action of the fungi on coir pith. The
use of these microorganisms brings about definite changes in the NPK, Ammonia,
Organic Carbon and Lignin contents in coir pith. This study will encourage the use
of biodegraded coir pith as organic manure for agri/horti purpose to get better
yields and can serve as a better technology to solve the problem of accumulated
coir pith in coir based industries
Description:
School of Environmental Studies, Cochin University of Science & Technology