Glucose effect on degradation kinetics of methyl parathion by filamentous fungi species Aspergilus Niger AN400

Engenharia Sanitaria e Ambiental

Glória Marinho²  Kelly Rodrigues¹  Rinaldo Araujo¹  Zuleika Bezerra Pinheiro¹  Germana Maria Marinho Silva¹ 

[1] ,Instituto Federal de Educação, Ciência e Tecnologia do Ceará Departamento da área de Química e Meio Ambiente Programa de Pós-Graduação em Tecnologia e Gestão Ambiental

关键词: Aspergillus niger;    biological reactors;    glucose;    methyl parathion;    toxicity;    Aspergillus niger;    reatores biológicos;    glicose;    metil paration;    toxicidade;   

DOI  :  10.1590/S1413-41522011000300004

来源: SciELO

【 摘 要 】

This study evaluated the glucose effect on the removal of methyl parathion by Aspergillus niger AN400. The study was conducted in two stages: toxicity tests on plates and assays in flasks, under an agitation of 200 rpm. The methyl parathion concentrations in the toxicity test ranged from 0.075 to 60 mg/L. The second stage consisted on evaluating reactors: six control reactors with methyl parathion solution; six reactors with fungi and methyl parathion, and six reactors containing fungi, methyl parathion, and glucose. The reaction times studied ranged from 1 to 27 days. Methyl parathion concentrations of up to 60 mg/L were not toxic for Aspergillus niger AN400. The first-order kinetic model served as a good representation of the methyl parathion conversion rate. The first-order kinetic constant was 0.063 ± 0.005 h-1 for flasks without addition of glucose, while a value of 0.162 ± 0.014 h-1 was obtained when glucose was added.

【 授权许可】

CC BY   
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