Use of duckweed (Lemna disperma) to assess the phytotoxicity of the products of Fenton oxidation of metsulfuron methyl

Abdul, Javeed M.; Colville, Anne; Lim, Richard P.; Vigneswaran, S.; Kandasamy, Jaya

doi:10.1016/j.ecoenv.2012.06.014

Cited by 8 publications

(6 citation statements)

References 35 publications

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“…This fact could be justified by the conjunction of different factors such as the production of free radicals ( OH) and the precipitation of iron oxides. Similar findings were also reported for duckweed (Lemna disperma) when exposed to Fenton reaction (Abdul et al, 2012).…”

Section: Controlsupporting

confidence: 81%

“…This could be attributed to the deposition of iron species, such as iron oxides (Abdul et al, 2012), in the root, reducing the available surface area for uptake of water and nutrients. Nevertheless, more studies are needed in order to confirm this possibility.…”

Section: Controlmentioning

confidence: 99%

“…It was noticed an inhibition in the percentage of seed germination and root elongation as well as a decrease in shoot and leaf length. Phytotoxic effects could be correlated with the production of free radicals (for example, OH and other oxygen species) and oxidizing species (for instance, ferryl ions) during Fenton oxidation that could cause oxidative stress in the crop plant organs; by the precipitation of iron oxides; and/or could also be associated to the formation of intermediates of ibuprofen during Fenton oxidation (Klamerth et al, 2010;Abdul et al, 2012). In fact, only the percentage of seed germination showed to be more affected in the contaminated soil after Fenton oxidation than when only the remediation treatment was considered, presenting a statistically significant high percentage of seed germination in the absence of contaminant (p ¼ 0.002 < 0.05).…”

Section: Controlmentioning

confidence: 99%

“…Due to the different reagents (e.g. iron, H 2 O 2 ) required, during this advanced oxidation process are produced free radicals and oxidizing species that showed to be highly toxic for aquatic plant species (Abdul et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

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Ecotoxicological impact of two soil remediation treatments in Lactuca sativa seeds

et al. 2016

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Section: Controlsupporting

confidence: 81%

Section: Controlmentioning

confidence: 99%

Section: Controlmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ecotoxicological impact of two soil remediation treatments in Lactuca sativa seeds

et al. 2016

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“…Chlorimuron-ethyl, sulfonylurea herbicide, was degraded via Fenton and photo-Fenton processes [19]. Another sulfonylurea herbicide, metsulfuron-methyl, was oxidized by Fenton's reagent and the phytotoxicity of the reaction products was determined by Lemna (duckweed) bioassay [20]. To our knowledge, no studies of nicosulfuron degradation by Fenton's reagent were reported so far.…”

mentioning

confidence: 99%

Degradation of nicosulfuron using fenton and fenton-like reactions

Dugandžić¹,

Tomasevic

Dabic³

et al. 2018

CI&CEQ

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Article Highlights • Nicosulfuron was subjected to different Fenton reactions at the pH of a nicosulfuron aqueous solution • The Fenton reaction was much faster and more efficient than the Fenton-like reaction • The photo-Fenton reaction proceeded much faster and more efficient than the Fenton reaction • The MW-Fenton reaction proceeded with increased efficiency in comparison to the Fenton reaction • The toxicity tests showed the decrease in toxicity after the treatment Abstract Nicosulfuron, a sulfonylurea herbicide, was subjected to different Fenton reactions at pH of a nicosulfuron aqueous solution (pH 5). Usually, the optimal pH for the Fenton reaction is between 3 and 4, but the addition of acids is not environmentally acceptable. This is the reason why the reactions were performed at a higher pH value than usual. So, classical Fenton and Fenton-like reactions were applied as well as photo-Fenton and photo-Fenton-like reactions. In addition, microwave Fenton and Fenton-like reactions were used in nicosulfuron degradation. Influences of Fe 2+ and Fe 3+ concentrations, as well as hydrogen peroxide concentrations, were studied. The Fenton reaction was much faster and more efficient than the Fenton-like reaction, while the photo-Fenton reaction proceeded much faster and more efficiently than the Fenton reaction. The microwave-Fenton and microwave-Fenton-like reactions proceeded with increased efficiency in comparison to the Fenton and Fenton-like reactions. The phytotoxicity and acute toxicity of the reaction products of nicosulfuron oxidation by the photo-Fenton reaction were analyzed. The toxicity testing of nicosulfuron treatment by photo-Fenton process showed a decrease in phytotoxicity, while the acute toxicity tests showed that the samples after treatment had lower toxicity.

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Application of multiple toxicity tests in monitoring of landfill leachate treatment efficiency

Kalčíková

Zupančič

Levei

et al. 2015

Environ Monit Assess

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Leachate from a closed landfill used for co-disposal of municipal and tannery waste was submitted to coagulation treatment, air stripping, adsorption on granular activated carbon, and Fenton oxidation with the aim to reduce toxicity of the leachate. Optimal operational conditions for each process were identified. The performance of the treatment was monitored by determination of organic matter (COD, DOC, BOD5), inorganic components (N-NH4(+), Cl(-), alkalinity, metals), organic compounds (BTEX, PAHs, PCBs, OCPs) while changes in toxicity were followed by multiple toxicity tests. Among the applied treatment techniques, adsorption on granular activated carbon was the most efficient method for removal of organic matter and metals while air stripping was the most efficient for removal of N-NH4(+) and reduction of toxicity. Lower reduction of organic matter content and toxicity was obtained during coagulation treatment. Fenton oxidation was effective for removal of COD; however, it negatively affected toxicity reduction. The combination of adsorption on granular activated carbon and air stripping led to an appreciable reduction of organic and inorganic pollutants and to leachate detoxification. Application of bioassays was helpful for assessing suitability of treatment methods and demonstrated that they are, together with physicochemical parameters, an indispensable part for monitoring of treatment efficiency.

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Use of duckweed (Lemna disperma) to assess the phytotoxicity of the products of Fenton oxidation of metsulfuron methyl

Cited by 8 publications

References 35 publications

Ecotoxicological impact of two soil remediation treatments in Lactuca sativa seeds

Ecotoxicological impact of two soil remediation treatments in Lactuca sativa seeds

Degradation of nicosulfuron using fenton and fenton-like reactions

Application of multiple toxicity tests in monitoring of landfill leachate treatment efficiency

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