Biodegradation of 2,4-dichlorophenoxyacetic acid (2,4-D) and 2-methyl-4-chlorophenoxyacetic acid (MCPA) in contaminated soil
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Cited by (29)
Microbial degradation of pesticides
2021, Development in Wastewater Treatment Research and Processes: Innovative Microbe-Based Applications for Removal of Chemicals and Metals in Wastewater Treatment PlantsEffect of pH on the mobility of the herbicide MCPA in a sand-goethite column: 1D and 2D reactive transport modeling
2018, Applied GeochemistryCitation Excerpt :Although MCPA is applied at dosages of more than 1 kg ha−1, it is not considered an environmental risk as it “disappears” rapidly in a soil environment. This is mainly attributed to its favorable structure for microbial degradation (Sandmann et al., 1988; McGhee and Burns, 1995; Jacobsen et al., 2008; Paszko, 2009), but can be due to adsorption processes as well. Decomposition is decelerated in the adsorbed state (Jensen et al., 2004).
Impact of wheat straw biochar addition to soil on the sorption, leaching, dissipation of the herbicide (4-chloro-2-methylphenoxy)acetic acid and the growth of sunflower (Helianthus annuus L.)
2013, Ecotoxicology and Environmental SafetyCitation Excerpt :On the other hand, an increase of pesticide dissipation in biochar-amended soil was also reported and this was attributed to the stimulation of the microbial activity by the nutrients present in biochar (Qiu et al., 2009). In this study, the dissipation of MCPA in the non-amended soil was rapid with only 1.32% MCPA of its initial amount remaining after 24 d (Fig. 3) and a half-life value of 5.2 d. Rapid dissipation of MCPA in topsoils under the similar conditions as used in this study has been observed by other researchers (Paszko, 2009; Thorstensen and Lode, 2001) and attributed to the presence of several soil bacteria and fungi, which were identified as efficient degraders of MCPA and other phenoxy acid herbicides (Bollag et al., 1967; Castillo et al., 2001; McGhee and Burns, 1995; Reddy et al., 1997). The dissipation of MCPA in the biochar-amended soil was also rapid within the first 7 d (Fig. 3), but after this time slowed down and still 5.6% MCPA remained in the 1 wt% biochar soil after 70 d, resulting in a half-life value of 21.5 d. Thus, the results indicated that the rate and extent of MCPA dissipation in biochar-amended soil were decreased compared to the non-amended soil.