title: Novel application of fungal Phanerochaete sp. and xylanase for reduction in pollution load of paper mill effluent.
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 C(D)E(OP)D1D2 sequence of bleaching was used for strategy-I and IV whereas XC(D)E(OP)D1D2 sequence was applied to strategy-I 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) up to 57, 60, 30 and 43.6%, respectively.
authors.affiliation: Research and Development Division, Ballarpur Industries Limited (BILT), Yamuna Nagar-135 001, India. rdy01@yahoo.com
authors.forename: Ravi Dutt
authors.initials: RD
authors.lastname: Yadav
authors.forename: Smita
authors.initials: S
authors.lastname: Chaudhry
authors.forename: Sanjeev
authors.initials: S
authors.lastname: Gupta
mesh_terms: D001673:Biodegradation, Environmental; D043364:Endo-1,4-beta Xylanases / Q000378:metabolism*; D007220:Industrial Waste; D010209:Paper; D020075:Phanerochaete / Q000502:physiology*; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000378:metabolism*; D014934:Wood / Q000737:chemistry
chemical_list: D007220:Industrial Waste; D014874:Water Pollutants, Chemical; D043364:Endo-1,4-beta Xylanases