Serveur d'exploration sur le phanerochaete

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Novel application of fungal Phanerochaete sp. and xylanase for reduction in pollution load of paper mill effluent.

Identifieur interne : 000400 ( Main/Curation ); précédent : 000399; suivant : 000401

Novel application of fungal Phanerochaete sp. and xylanase for reduction in pollution load of paper mill effluent.

Auteurs : Ravi Dutt Yadav [Inde] ; Smita Chaudhry ; Sanjeev Gupta

Source :

RBID : pubmed:23033684

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English descriptors

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.

PubMed: 23033684

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pubmed:23033684

Le document en format XML

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<name sortKey="Yadav, Ravi Dutt" sort="Yadav, Ravi Dutt" uniqKey="Yadav R" first="Ravi Dutt" last="Yadav">Ravi Dutt Yadav</name>
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<term>Biodegradation, Environmental (MeSH)</term>
<term>Endo-1,4-beta Xylanases (metabolism)</term>
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<term>Paper (MeSH)</term>
<term>Phanerochaete (physiology)</term>
<term>Waste Disposal, Fluid (methods)</term>
<term>Water Pollutants, Chemical (chemistry)</term>
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<term>Bois (composition chimique)</term>
<term>Déchets industriels (MeSH)</term>
<term>Dépollution biologique de l'environnement (MeSH)</term>
<term>Endo-1,4-beta xylanases (métabolisme)</term>
<term>Papier (MeSH)</term>
<term>Phanerochaete (physiologie)</term>
<term>Polluants chimiques de l'eau (composition chimique)</term>
<term>Polluants chimiques de l'eau (métabolisme)</term>
<term>Élimination des déchets liquides (méthodes)</term>
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<term>Endo-1,4-beta Xylanases</term>
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<term>Wood</term>
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<term>Bois</term>
<term>Polluants chimiques de l'eau</term>
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<term>Waste Disposal, Fluid</term>
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<term>Endo-1,4-beta xylanases</term>
<term>Polluants chimiques de l'eau</term>
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<term>Élimination des déchets liquides</term>
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<div type="abstract" xml:lang="en">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.</div>
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<AbstractText>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.</AbstractText>
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