Phytotoxicity Assessment Of Effluent Waters, Surface Water And Sediments

Montvydienė, Danguolė; Marčiulionienė, Danutė; Karlaviciene, Vilmante; Hogland, William

doi:10.1007/978-1-4020-6795-2_16

Cited by 6 publications

(6 citation statements)

References 9 publications

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“…Much of the recent aquatic toxicology in particular, which has driven legislation in this area, has been concerned with the prediction of effects of pollutants with respect to effect of interaction between the different metals, [4][5][6][7][8][9] the significance and impact of environmental factors such as temperature, incoming solar radiation or other seasonal factors, [10][11][12][13][14] and factors influencing the bioavailability of metals. [15][16][17][18][19][20] Recorded toxic effects include damaged or reduced mental and central nervous function, lower energy levels, and damage to blood composition, lungs, kidneys, liver, and other vital organs.…”

Section: Metals In the Environmentmentioning

confidence: 99%

The fate of metals in wastewater treated by the activated sludge process and membrane bioreactors: A brief review

Santos

Judd

2010

J. Environ. Monit.

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The fate of metals in wastewater treatment by the conventional activated sludge process (ASP) and membrane bioreactors (MBRs) is reviewed. The review outlines the environmental and health impacts of metals, but focuses primarily on data reported for removal of toxic metals, and some other high-profile inorganic micropollutants such as aluminium and arsenic, by wastewater treatment processes. Information from pilot and full scale plants is included, with corroboratory reports from bench-scale tests. General trends in removal across different metals are considered, along with the impact of the key process operating determinant of solids retention time. It is concluded that the only consistent trend in metals removal is that it is most effectively achieved through efficient solids separation, and that this represents the primary advantage offered by the MBR. As such, MBRs achieve averaged metals removals which are consistently but not dramatically higher than the ranges reported by the ASP: 64-92% vs. 51-87%, with no more than a 55% decrease on average in effluent concentration. The slightly greater removal attained is attributable to the additional suspended solids retention attained by the membrane process. In either case, further removal of metals would demand a tertiary process for removal of the dissolved material.

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Section: Metals In the Environmentmentioning

confidence: 99%

The fate of metals in wastewater treated by the activated sludge process and membrane bioreactors: A brief review

Santos

Judd

2010

J. Environ. Monit.

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“…The development of chemosensors for essential metal ions, especially copper and zinc ions, has gained increasing importance in recent years because these ions play important roles in living systems and have an extremely toxic impact on the environment . For instance, Cu 2+ ions are important in maintaining many biological processes, but excess concentrations of these ions can be highly toxic .…”

Section: Introductionmentioning

confidence: 99%

Dansyl—Naphthalimide Dyads As Molecular Probes: Effect of Spacer Group on Metal Ion Binding Properties

Shankar

Ramaiah

2011

J. Phys. Chem. B

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Interaction of a few dansyl-naphthalimide conjugates 1a-e linked through polymethylene spacer groups with various metal ions was investigated through absorption, fluorescence, NMR, isothermal calorimetric (ITC), and laser flash photolysis techniques. The characteristic feature of these dyads is that they exhibit competing singlet-singlet energy transfer (SSET) and photoinduced electron transfer (PET) processes, both of which decrease with the increase in spacer length. Depending on the spacer group, these dyads interact selectively with divalent Cu(2+) and Zn(2+) ions, as compared to other mono- and divalent metal ions. Jobs plot analysis showed that these dyads form 2:3 complexes with Cu(2+) ions, while 1:1 complexes were observed with Zn(2+) ions. The association constants for the Zn(2+) and Cu(2+) complexes were determined and are found to be in the order 10(3)-10(5) M(-1). Irrespective of the length of the spacer group, these dyads interestingly act as fluorescence ratiometric molecular probes for Cu(2+) ions by altering the emission intensity of both dansyl and naphthalimide chromophores. In contrast, only the fluorescence intensity of the naphthalimide chromophore of the lower homologues (n = 1-3) was altered by Zn(2+) ions. (1)H NMR and ITC measurements confirmed the involvement of both sulfonamide and dimethylamine groups in the complexation with Cu(2+) ions, while only the latter group was involved with Zn(2+) ions. Laser excitation of the dyads 1a-e showed formation of a transient absorption which can be attributed to the radical cation of the naphthalimide chromophore, whereas only the triplet excited state of the dyads 1a-e was observed in the presence of Cu(2+) ions. Uniquely, the complexation of 1a-e with Cu(2+) ions affects both PET and SSET processes, while only the PET process was partially inhibited by Zn(2+) ions in the lower homologues (n = 1-3) and the higher homologues exhibited negligible changes in their emission properties. Our results demonstrate that the spacer length dependent variations of the photophysical properties of these novel conjugates not only enable the selective detection of Cu(2+) and Zn(2+) ions but also aid in discriminating these two biologically important metal ions.

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“…These areas coincide with the borders of an area exposed to the highest level of geochemical contamination (Montvydienė et al 2008).…”

Section: Radioactive Pollutionmentioning

confidence: 99%

“…Activity concentration of radionuclides in macrophytes of wastewater discharge channels of the Ignalina NPP 3.4. Assessment of the toxicity of water and bottom sediments of Drūkšiai Lake using biological tests There are not much data on the toxic impact of discharges of NPPs on biological tests (Marčiulionienė et al 1992(Marčiulionienė et al , 1996Montvydienė 2002;Montvydienė et al 2008), because the main focus of the attention in the most investigations is devoted to the emission of radionuclides from the power plant, their accumulation and distribution among abiotic and biotic components of ecosystem and to the effects caused by low doses of radiation on humans and non-human species (Geras'kin et al 2008).…”

Section: Radioactive Pollutionmentioning

confidence: 99%

Changes in Macrophytes and Fish Communities in the Cooler of Ignalina Nuclear Power Plant (1988–2008) / Makrofitų Ir Žuvų Rūšinė Kaita Drūkšių Ežere – Ignalinos Atominės Elektrinės Aušinimo Baseine (1988–2008) / Изменение Видового Состава Макрофитов И Рыб Воз. Друкшяй –Водоеме Охладителе Игналинской Атомной Электростанции(1988–2008гг.)

Marčiulionienė

Montvydienė

Kazlauskienė

et al. 2011

Journal of Environmental Engineering and Landscape Management

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Journal of Environmental Engineering and Landscape ManagementPublication details, including instructions for authors and subscription information:Abstract. On the basis of long-term studies of the radionuclide and heavy metals accumulation and scatter in biotic and abiotic components of Drūkšiai Lake as well as of water and bottom sediments toxicity and genotoxicity, radioactive, chemical and thermal pollution potential impacts on macrophytes and fish communities of Drūkšiai Lake were evaluated. Before starting exploitation of Ignalina Nuclear Power Plant (INPP) 95 species of macrophytes were found in Drūkšiai Lake. Since the start-up of the second nuclear reactor of INPP (1987), significant alternations in macrophytes species composition and biomass in Drūkšiai Lake were especially observed to 1989. Resistant to the pollution macrophytes species began to dominate in the Lake. In 2007-2008 in the main part of the Lake, in which INPP sewage entered, only resistant to anthropogenic impacts macrophytes species were found. Fish species composition also has changed. The varietal diversity of the fish in the Lake significantly decreased from 23-26 (before INPP start-up) species to 14 ones. Considering the findings of our study, it can be assumed that changes in macrophytes species and fish varietal diversity in Drūkšiai Lake could be induced by total chemical, thermal and radioactive pollution, which had a negative impact on aquatic organisms. It can be predicted that new ecological conditions will appear in Drūkšiai Lake after INPP closing in 2009, notably after the changes of thermal water regime. However, the chemical and radioactive pollution in the Lake will be over a long period of INPP dismantling works. In addition, the great challenge for the ecosystem of Drūkšiai Lake will be a new nuclear power plant construction near the closed INPP.

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Phytotoxicity Assessment Of Effluent Waters, Surface Water And Sediments

Cited by 6 publications

References 9 publications

The fate of metals in wastewater treated by the activated sludge process and membrane bioreactors: A brief review

The fate of metals in wastewater treated by the activated sludge process and membrane bioreactors: A brief review

Dansyl—Naphthalimide Dyads As Molecular Probes: Effect of Spacer Group on Metal Ion Binding Properties

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