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Dissipation of chlorpyrifos, pendimethalin, and thiophanate-methyl pesticides in compost based-versus peat-moss based-biomixture of biobeds

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Waste Disposal and Sustainable Energy 2023年第4期5卷 461-470页

作者： Talaat N.M.El-Sebai Wafaa M.H.Zidan Alaa Marzouk marion divers Fabrice Martin-Laurent Agricultural Microbiology Dept.Agricultural and Biology Research Institute National Research CentreCairoEgypt Laboratory of Pesticide Analysis Agriculture Research CentreCairoEgypt Laboratory of Soil Microbiology National Institute of Agricultural ResearchDijonFrance

Biobed is a smart bioremediation system used to treat point-source pesticide *** is the main component of biobeds,and pesticide dissipation is affected by its *** study aimed to compare the effectiveness of compost-based(C)versus peat-moss-based(P)biomixtures of biobeds on tested pesticide *** concentrations(25,50,and 75 mg/kg)of chlorpyrifos,pendimethalin,and thiophanate methyl were added separately and as a mix to both biomixtures C and *** data showed the effect of biomixture type on the dissipation of the tested *** chlorpyrifos,its dissipation rate in biomixture P was more rapid than that in biomixture *** result was confirmed by the mineralization kinetic experiment,since 25%of the initial ^(14)C-chlorpyrifos concentration accumulated in the form ^(14)CO_(2) in biomixture P compared to only 14%in biomixture *** addition,the chlorpyrifos dissipation rate was influenced by the initial concentration when applied individually in biomixture *** contrast,biomixture C was more effective at pendimethalin dissipation than biomixture P,since>76%of pendimethalin was dissipated in biomixture C versus 67%in biomixture P at the same incubation *** thiophanate-methyl,the abilities of both biomixtures C and P were similar and less efficient than those of the other tested *** addition of the three tested pesticides to biomixture C only had a positive effect on both chlorpyrifos and thiophanate-methyl dissipation,while pendimethalin dissipation was similar when applied separately or as a *** activity was stimulated by the addition of separately or mixed pesticides to biomixtures C and P as measured by dehydrogenase activity.

关键词： Biopurification system Pesticides Contamination Point-source Bioremediation Biomixture

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