Novel application of fungal Phanerochaete sp. and xylanase for reduction in pollution load of paper mill effluent.
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Date
2012-03
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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.
Description
Keywords
Adsorbable organic halides, Biobleaching, Biopulping, White rot fungus, Xylanase
Citation
Yadav Ravi Dutt, Chaudhry Smita, Gupta Sanjeev. Novel application of fungal Phanerochaete sp. and xylanase for reduction in pollution load of paper mill effluent. Journal of Environmental Biology. 2012 Mar; 33(2): 223-226.