nstantaneous and historical temperature effects on a-pinene
Novel
application of fungal Phanerochaetesp.and xylanase
for reduction in pollution
load of paper mill effluent
Author Details
RaviDuttYadav
(Corresponding author)
Research
and Development Division, Ballarpur Industries
Limited (BILT),YamunaNagar - 135 001,
India
e-mail:
rdy01@yahoo.com
SmitaChaudhry
Institute
ofEnvironmental Studies, KurukshetraUniversity,
Kurukshetra - 136 119, India
SanjeevGupta
Environment
Group, Thapar Centre for Industrial Research and
Development,
YamunaNagar
- 135 001, India???????
Publication Data
Paper received:
25
September 2010
Revised
received:
13
January 2011
Accepted:
05 February 2011
Abstract
Four
different strategies of pulping and bleaching were carried out to develop
alternative mechanistic ecoenvironmental friendly
approaches and generated effluent was characterised.
Strategy-I included Phanerochaete sp.
fungal pretreatment followed by conventional bleaching, whereas in
strategy-II, fungal pretreatment was followed by enzyme xylanase
aided bleaching. Strategy-III also included xylanase
supplement but without prior fungal pretreatment. Chemically driven pulping
and bleaching was the IV strategy. Conventional CDEOPD1D2
sequence of bleaching was used for strategy?I and IV whereas XCDEOPD1D2
sequence was applied to strategy?II and III. Strategy?II was responsible for
27.5% reduction in Kappa no. whereas the maximum (27.5%) reduction in
refining energy was observed with strategy?II. Biobleaching
strategies? II and III were helpful in saving 37.3 and 20.3% of elemental
chlorine (Cl2) and 30.8 and 23.1% of
chlorine dioxide (ClO2),
respectively. In comparison to control (strategy-IV), strategy II resulted in
maximum pollution load reduction of chemical oxygen demand (COD), biological
oxygen demand (BOD), color and adsorbable organic
halides (AOX) upto 57, 60, 30 and 43.6%,
respectively.
?
Key
words
Adsorbable organic halides, Biobleaching,
Biopulping, White rot
fungus, Xylanase
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