Lemna minor as a tool for wastewater toxicity assessment and pollutants removal agent

Žaltauskaitė, Jūratė; Sujetovienė, Gintarė; Čypaitė, Agnė; Aužbikavičiūtė, Agnė

doi:10.3846/enviro.2014.104

Cited by 7 publications

(8 citation statements)

References 13 publications

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“…Pandey [14] reported that in the duckweed treatment system at Halisahar, nitrogen and phosphorus removals were in the range of 50-75% and 17-35% respectively. In the support of present findings Zaltauskaite et al [15] found that Lemna minor efficiently removes N, P, K and also Ca and Mg from wastewaters compared to other treatment methods. The cause of reduction in nitrogen, phosphorus, potassium, calcium and magnesium was utilized by the Lemna minor as a nutrient as also reported out by Patel and Kanungo [16].…”

Section: Macronutrients (N P K Ca Mg)supporting

confidence: 79%

“…Similarly, the result obtained after growing Lemna minor in the tap water showed that photosynthetic pigments such as Chl 'a' , Chl 'b' , total chl-, carotenoids, carbohydrate and protein contents increased by 24.75%, 27.46%, 21.10% 6.29%, 15.19% and 7.95% respectively in the plant tissues of Lemna minor. Zaltauskaite et al [15] have also found that wastewater treatment resulted in higher content of photosynthetic pigments in L. minor exposed to untreated wastewater. Similarly, Benerjee and Matai [22] have also reported concentration of carbohydrates in Lemna minor increased by 15.19% and 23.64% on dry weight basis when grown on tap water and wastewater respectively.…”

Section: Biochemical Parametersmentioning

confidence: 97%

“…In the line of present study Waffa et al [17] reported that duckweed treatment system reduced zinc by 93.6% and copper by 100% during eight days retention period. Zaltauskaite et al [15] also found that Zn was most efficiently removed, depending on the initial Zn concentration Lemna minor removed between 42.3-77.8% of Zn. They also found that after the 7 days of effluents exposure to Lemna minor treatment, the concentration nickel was reduced significantly.…”

Section: Analysis Of the Water And Plant Samplesmentioning

confidence: 99%

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Evaluation of the Efficiency of Duckweed (Lemna minor L.) as a Phytoremediation Agent in Wastewater Treatment in Kashmir Himalayas

Showqi¹,

Lone²,

Bhat³

2017

J Bioremediat Biodegrad

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In the present study, the efficiency of duckweed (Lemna minor L.) as an effective natural biological tool in wastewater treatment was examined in an outdoor aquatic system. Duckweed plants were inoculated into wastewater and tap water systems for treatment over fifteen day's retention periods under local outdoor natural conditions. Water samples were taken below duckweed cover after fifteen days to assess the plant's efficiency in purifying waste water from different pollutants. For comparison, the plants were also grown in tubs containing tap water. The results show that concentrations of Nitrogen (N), Phosphorus (P), Potassium (K), Calcium (Ca), Magnesium (Mg), Copper (Cu), Zinc (Zn), Nickel (Ni), Chromium (Cr), Cadmium (Cd) and Lead (Pb) decreased by 93. 4%, 99.9%, 93.9%, 98.5%., 91.9%, 85.0%, 95.0%, 90.0%, 99.8%, 99.5% and 95.0% respectively in waste water and subsequently these elements exhibited an increasing concentration in the plant body. Almost similar results were obtained when the plants were grown in tubs containing tap water. Biochemical parameters viz. chl-a, b, total-chl, carbohydrates and proteins as well as nutrient status of the macrophyte increased after the completion of the retention period both in waste and tap water. Results confirm that duckweeds can effectively be used for wastewater treatment systems.

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Section: Macronutrients (N P K Ca Mg)supporting

confidence: 79%

Section: Biochemical Parametersmentioning

confidence: 97%

Section: Analysis Of the Water And Plant Samplesmentioning

confidence: 99%

See 1 more Smart Citation

Evaluation of the Efficiency of Duckweed (Lemna minor L.) as a Phytoremediation Agent in Wastewater Treatment in Kashmir Himalayas

Showqi¹,

Lone²,

Bhat³

2017

J Bioremediat Biodegrad

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“…The second possible explanation for higher biomass in the low concentrations of the leachate could be that these colonies produced very few new fronds (Figure 2A), but they were of higher biomass. The stimulatory effects of low leachate or wastewater concentrations on the growth of plants have been recorded in several studies (Clément and Bouvet, 1993, Žaltauskaitė and Vaisiūnaitė, 2010, Žaltauskaitė and Čypaitė, 2008, Žaltauskaitė et al, 2014. This stimulation effect could be explained by sufficiently high concentrations of nutrients and relatively low concentrations of other toxic substances.…”

Section: Toxicity To Lemna Minor and Daphnia Magnamentioning

confidence: 89%

Toxicological assessment of closed municipal solid-waste landfill impact to the environment

Žaltauskaitė

Vaitonyte²

2017

EREM

Self Cite

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A large number of municipal solid waste landfills in Lithuania pose a serious environmental threat to the quality of soil, surface and ground water. The physicochemical characteristics and toxicity of closed Panevėžys municipal solid-waste landfill leachate and its impact on soil and surface water were assessed. Landfill leachate is a complex mixture of various inorganic and organic compounds. The toxicity of municipal solid waste landfill leachate and surface water was evaluated using bioassays with aquatic plants (Lemna minor L.) and micro-invertebrates (Daphnia magna). The leachate was shown to be toxic to D. magna, and it also reduced the growth and biomass of L. minor. The toxicity has been linked with ammonium and heavy metal content as the prime contributors to the toxicity.

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“…Tests using plant fronds Daphnia magna and freshwater crustaceans Lemna minor are often performed in toxicological studies, because they are simple, fast and cost-effective. Moreover, they represent both plants and animals, which may tell us more about the impact on the ecosystem, and selected microorganisms are very informative in terms of the potential toxicity of wastewater [68][69][70]. For example, Sackey et al found that Daphnia magna and Lemna minor are effective for testing the toxicity of leachates [71].…”

Section: Ecotoxicitymentioning

confidence: 99%

UV-Catalyzed Persulfate Oxidation of an Anthraquinone Based Dye

et al. 2020

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Wastewater from the textile industry has a substantial impact on water quality. Synthetic dyes used in the textile production process are often discharged into water bodies as residues. Highly colored wastewater causes various of problems for the aquatic environment such as: reducing light penetration, inhibiting photosynthesis and being toxic to certain organisms. Since most dyes are resistant to biodegradation and are not completely removed by conventional methods (adsorption, coagulation-flocculation, activated sludge, membrane filtration) they persist in the environment. Advanced oxidation processes (AOPs) based on hydrogen peroxide (H2O2) have been proven to decolorize only some of the dyes from wastewater by photocatalysis. In this article, we compared two very different photocatalytic systems (UV/peroxydisulfate and UV/H2O2). Photocatalyzed activation of peroxydisulfate (PDS) generated sulfate radicals (SO4•−), which reacted with the selected anthraquinone dye of concern, Acid Blue 129 (AB129). Various conditions, such as pH and concentration of PDS were applied, in order to obtain an effective decolorization effect, which was significantly better than in the case of hydroxyl radicals. The kinetics of the reaction followed a pseudo-first order model. The main reaction pathway was also proposed based on quantum chemical analysis. Moreover, the toxicity of the solution after treatment was evaluated using Daphnia magna and Lemna minor, and was found to be significantly lower compared to the toxicity of the initial dye.

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Lemna minor as a tool for wastewater toxicity assessment and pollutants removal agent

Cited by 7 publications

References 13 publications

Evaluation of the Efficiency of Duckweed (Lemna minor L.) as a Phytoremediation Agent in Wastewater Treatment in Kashmir Himalayas

Evaluation of the Efficiency of Duckweed (Lemna minor L.) as a Phytoremediation Agent in Wastewater Treatment in Kashmir Himalayas

Toxicological assessment of closed municipal solid-waste landfill impact to the environment

UV-Catalyzed Persulfate Oxidation of an Anthraquinone Based Dye

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