Spatiotemporal simulations of 2,4-D pesticide degradation by microorganisms in 3D soil-core experiments

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• 作者：Tristan Babey^a ; ^{tristan.babey@univ-rennes1.fr} ; Laure Vieublé ; -Gonod^b ; Alain Rapaport^c ; Marc Pinheiro^d ; Patricia Garnier^d ; Jean-Raynald de Dreuzy^a
• 关键词：Pesticide degradation ; Spatial heterogeneity ; Reactive transport model ; Diffusion-controlled microbial activity ; 2 ; 4-D
• 刊名：Ecological Modelling
• 出版年：2017
• 出版时间：24 January 2017
• 年：2017
• 卷：344
• 期：Complete
• 页码：48-61
• 全文大小：3092 K
• 卷排序：344

文摘

Calibration of a 2,4-D degradation, sorption and diffusion model from experiments. Degradation in hotspots is enabled by fast microbial kinetics. Microbial activity is limited by 2,4-D dilution and abiotic trapping. Slow diffusion is not an efficient 2,4-D delivery mechanism to hotspots. Heterogeneous degradation requires intermittent and localizing delivery processes.