Mineralization of isoproturon, mecoprop and acetochlor in a deep unsaturated limestone and sandy aquifer

Janniche, Gry Sander; Lindberg, Ellinor; Mouvet, Christophe; Albrechtsen, Hans‐Jørgen

doi:10.1016/j.chemosphere.2010.08.023

Cited by 20 publications

(15 citation statements)

References 38 publications

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“…This corresponds to previous observations of aerobic biodegradation of MCPP with aquifer materials (Janniche et al, 2010;Toräng and Albrechtsen, 2003). However, an adaptation phase of more than 16 days is required before MCPP degradation is initiated in aquifer material (Agertved et al, 1992;Tuxen et al, 2000;Janniche et al, 2010). Filter sand that has not previously been exposed to pesticides is able to remove pesticides without an adaptation phase (Hedegaard and Albrechtsen, 2014) and in the current laboratory experiments degradation of MCPP was also initiated immediately ( Figure 7).…”

Section: Perspectivesmentioning

confidence: 62%

Section: Perspectivesmentioning

confidence: 87%

“…The extracted water volume from the microcosms was replaced with sterile air. A double-vial system was set up to strip off 14 CO 2 produced from the water sample, by adding 37% HCl and then catching 14 CO 2 in a base (1 mL 2M NaOH) in an inner vial (6 mL) (Janniche et al, 2010). The 14 C-activity of the water sample and 14 CO 2 was subsequently quantified.…”

Section: Microbial Degradationmentioning

confidence: 99%

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Mecoprop (MCPP) removal in full-scale rapid sand filters at a groundwater-based waterworks

Hedegaard¹,

Arvin²,

Corfitzen³

et al. 2014

Science of The Total Environment

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Section: Perspectivesmentioning

confidence: 62%

Section: Perspectivesmentioning

confidence: 87%

Section: Microbial Degradationmentioning

confidence: 99%

See 1 more Smart Citation

Mecoprop (MCPP) removal in full-scale rapid sand filters at a groundwater-based waterworks

Hedegaard¹,

Arvin²,

Corfitzen³

et al. 2014

Science of The Total Environment

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“…In an aerobic aquifer, significant in situ biodegradation of phenoxypropionate herbicides has previously been shown (13), and in microcosms of groundwater and sediment samples, significant degradation of the herbicides has also been observed with aerobic incubation (14)(15)(16). Similarly, in a Danish waterworks, trace concentrations of MCPP were removed from contaminated ground-water by filtering through a sand filter (17).…”

mentioning

confidence: 95%

Establishment of Bacterial Herbicide Degraders in a Rapid Sand Filter for Bioremediation of Phenoxypropionate-Polluted Groundwater

Feld

Nielsen

Hansen

et al. 2016

Appl Environ Microbiol

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In this study, we investigated the establishment of natural bacterial degraders in a sand filter treating groundwater contaminated with the phenoxypropionate herbicides (RS)-2-(4-chloro-2-methylphenoxy)propanoic acid (MCPP) and (RS)-2-(2,4-dichlorophenoxy)propanoic acid (DCPP) and the associated impurity/catabolite 4-chlorophenoxypropanoic acid (4-CPP). A pilot facility was set up in a contaminated landfill site. Anaerobic groundwater was pumped up and passed through an aeration basin and subsequently through a rapid sand filter, which is characterized by a short residence time of the water in the filter. For 3 months, the degradation of DCPP, MCPP, and 4-CPP in the sand filter increased to 15 to 30% of the inlet concentration. A significant selection for natural bacterial herbicide degraders also occurred in the sand filter. Using a most-probable-number (MPN) method, we found a steady increase in the number of culturable phenoxypropionate degraders, reaching approximately 5 ؋ 10 5 degraders per g sand by the end of the study. Using a quantitative PCR targeting the two phenoxypropionate degradation genes, rdpA and sdpA, encoding stereospecific dioxygenases, a parallel increase was observed, but with the gene copy numbers being about 2 to 3 log units higher than the MPN. In general, the sdpA gene was more abundant than the rdpA gene, and the establishment of a significant population of bacteria harboring sdpA occurred faster than the establishment of an rdpA gene-carrying population. The identities of the specific herbicide degraders in the sand filter were assessed by Illumina MiSeq sequencing of 16S rRNA genes from sand filter samples and from selected MPN plate wells. We propose a list of potential degrader bacteria involved in herbicide degradation, including representatives belonging to the Comamonadaceae and Sphingomonadales.G roundwater is a valuable resource that is used for drinking water in many countries all over the world. The quality of the water is vital to our health, and regulations have been made to control the concentration of contaminants and protect the groundwater (1). A major concern is leaching of pesticides mainly from agricultural areas but also from urban areas or from point sources (2). In the European Union, a legal threshold limit has been set at 0.1 g/liter for any given pesticide or 0.5 g/liter for a total concentration of mixed pesticides in drinking water (3).In Denmark, monitoring of the groundwater status has detected pesticides in almost 40% of the investigated wells, and the concentrations exceed the allowed threshold limit in 12% of the wells (4). Phenoxypropionate herbicides, including the compounds (RS)-2-(2,4-dichlorophenoxy)propanoic acid (known as DCPP or dichlorprop) and (RS)-2-(4-chloro-2-methylphenoxy)propanoic acid (known as MCPP or mecoprop), are among the pesticides frequently found in contaminated wells (4). The herbicides are, in particular, a problem in old landfill areas, from where they are leaching into the groundwater as a point source contamination (5). Phe...

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“…For instance, bentazone is biodegradable in topsoils under aerobic conditions (Huber and Otto, 1994;Leistra et al, 2001;Li et al, 2008;Rodriguez-Cruz et al, 2008;Larsbo et al, 2009), but it appears to be recalcitrant in aquifers under aerobic conditions (Tuxen et al, 2000;Broholm et al, 2001). In contrast, the degradation of mecoprop and dichlorprop has been observed both in topsoil (Smith, 1989) and in aquifers under aerobic conditions (see the reviews of Buss et al, 2006;Reitzel et al, 2004;Janniche et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Stimulation of aerobic degradation of bentazone, mecoprop and dichlorprop by oxygen addition to aquifer sediment

Levi

Hybel

Bjerg

et al. 2014

Science of The Total Environment

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Mineralization of isoproturon, mecoprop and acetochlor in a deep unsaturated limestone and sandy aquifer

Cited by 20 publications

References 38 publications

Mecoprop (MCPP) removal in full-scale rapid sand filters at a groundwater-based waterworks

Mecoprop (MCPP) removal in full-scale rapid sand filters at a groundwater-based waterworks

Establishment of Bacterial Herbicide Degraders in a Rapid Sand Filter for Bioremediation of Phenoxypropionate-Polluted Groundwater

Stimulation of aerobic degradation of bentazone, mecoprop and dichlorprop by oxygen addition to aquifer sediment

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