Готові списки джерел за темами / Polluted waters

Добірка наукової літератури з теми "Polluted waters"

Автор: Grafiati

Опубліковано: 7 липня 2024

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Статті в журналах з теми "Polluted waters":

Yang, Dongfang, Haixia Li, Dong Lin, Yuan Zhang, and Qi Wang. "The reduction process of petroleum content in marine oil spill in Jiaozhou Bay." E3S Web of Conferences 252 (2021): 03013. http://dx.doi.org/10.1051/e3sconf/202125203013.

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According to the survey data about the waters of Jiaozhou Bay in May, September, and October 1993, this paper studies the content of PHC and its horizontal distribution in the surface waters of Jiaozhou Bay. The result shows that the range of PHC content in the waters of Jiaozhou bay is 4.16–51.00μg/L, which conforms to the national first, second and third water quality standards. In terms of PHC content, the water quality of Jiaozhou Bay is slightly polluted by PHC content in May, September and October. In May, the range of PHC content in the water of Jiaozhou Bay is 4.16–51.00μg/L, which is slightly polluted by PHC content. In the center of east waters, the water quality is slightly polluted by PHC content and the range of PHC content in other water fields of Jiaozhou Bay is 4.16–48.40μg/L which indicates that the water quality is not polluted by PHC content. In September, the range of PHC content in the waters of Jiaozhou Bay is 6.17–12.70μg/L, which is not polluted by PHC content. In October, the range of PHC content is 11.40–11.80μg/L, indicating that the waters of Jiaozhou Bay are not polluted by PHC. The content of PHC in the waters of Jiaozhou Bay only has one source, the transportation of marine oil spill, and the PHC content transported is 12.70–51.00μg/L. Therefore, as time changes, the ocean polluted by PHC content resulting from marine oil spill has gradually reduced over the course of the year. The marine oil spill has caused the waters in May to be slightly polluted by the PHC content. By September, the waters are not polluted by the PHC content. And then, in October, the marine oil spill has disappeared.

Tobler, M., and Z. W. Culumber. "Swimming in polluted waters." Science 354, no. 6317 (December 8, 2016): 1232–33. http://dx.doi.org/10.1126/science.aal3211.

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Imziln, Boujamaa. "Occurrence and Antibiotic Resistance of Mesophilic Aeromonas in Three Riverine Freshwaters of Marrakech, Morocco." Scientific World JOURNAL 1 (2001): 796–807. http://dx.doi.org/10.1100/tsw.2001.284.

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I n order to evaluate the impact of pollution and sewage on the occurrence and antibiotic resistance of mesophilic aeromonads in riverine freshwaters of Marrakech, samples were collected from three rivers (Oukaimeden, Ourika, and Tensift) upstream and downstream from the principal bordering villages. During a 2-year study, indicators of pollution increased dramatically in the downstream waters. Bacterial indicators (faecal coliforms and faecal streptococci) correlated with mesophilic aeromonads only in heavily polluted waters. In low and moderately polluted sources, densities of mesophilic aeromonads were independent of water quality indicators and did not correlate statistically with faecal indicators. Average counts of Aeromonas in low and heavily polluted waters were 2.5 × 103 and 2.1 × 106 colony forming units per 100 ml, respectively. The biochemical identification of 841 isolates indicated a predominance of A. caviae in heavily and moderately polluted water and sediment. A. hydrophila was dominant only in low polluted waters and when the temperature was below 12°C. High densities of A. sobria were found in low, moderately polluted, or cleaned waters and when the water temperature was above 18°C. All selected isolates (total = 841) were tested for antibiotic susceptibility against 21 antibiotics. Antibiotic resistance frequencies recorded were: ampicillin and amoxicillin, 100%; novobiocin, 96%; cefalotin, 81%; colistin, 72%; sulfamethoxazole, 40%; cefamandole, 37%; polymyxin B, 23%; trimethoprim, 17%; erythromycin, 15%; streptomycin, 8%; amoxicillin-clavulanate, 5%. Resistance to cefotaxime, kanamycin, gentamycin, chloramphenicol, tetracycline, oxytetracycline, nalidixic acid, rifampicin, or trimethoprim-sulfamethoxazole was found to be <5%. Antibiotic resistance rates did vary according to the source of a strain’s isolation, and high numbers of antibiotic resistant strains were recorded in polluted samples. Since no correlation between mesophilic aeromonads and conventional faecal pollution indicators was observed in low or moderately polluted waters, and since these freshwaters are used for domestic supply, we propose the use of mesophilic aeromonads as complementary water pollution indicators to ensure the safety of water.

Juuti, Petri S., and Tapio S. Katko. "From Polluted to Swimmable Waters." Water International 24, no. 3 (September 1999): 204–10. http://dx.doi.org/10.1080/02508069908692163.

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Yang, Dongfang, Haixia Li, Dong Lin, Yuan Zhang, and Dongmei Jing. "Gradually increasing Petroleum content in Jiaozhou Bay waters." E3S Web of Conferences 136 (2019): 06014. http://dx.doi.org/10.1051/e3sconf/201913606014.

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Based on the survey data of Jiaozhou Bay in May, August and October 1992, this paper studied PHC content in Jiaozhou Bay and its horizontal distribution in the surface layer. The results showed that PHC content in the waterbodyof Jiaozhou Bay in May, August and October ranged from 0.006mg/L to 0.075mg/L, which met the first-class, secondand thirdseawater quality standard in China. This fact indicatedthat the waters of Jiaozhou Bay were slightly polluted by PHCduring this period. In May, PHC content in the waterbody of Jiaozhou Bay ranged from 0.006mg/L to 0.070mg/L, showingthat itwasslightly polluted by PHC.The PHC content in the coastalwater at the entrance of Haibo River was 0.070mg/L, beingslightly polluted; The PHCcontent in the other waters of Jiaozhou Bay ranged from 0.006mg/L to 0.042mg/L, not polluted. In August, PHC content in the waterbody of Jiaozhou Bay ranged from 0.019mg/L to 0.056mg/L, slightly polluted by PHC. The PHC content in the central water of theeastern bay was 0.056mg/L, slightly polluted; The PHC content in the other waters of Jiaozhou Bay ranged from 0.019mg/L to 0.048mg/L, not polluted. In October, PHC content in the waterbody of Jiaozhou Bay ranged from 0.028mg/L to 0.075mg/L, showing that it wasslightly polluted by PHC. The PHC content in the coastalwaters at the entrance of Loushan River and Licun River ranged from 0.055mg/L to 0.075mg/L,slightly polluted; The other waters inside Jiaozhou Bay were not polluted. The PHC content in the water at the bay mouthof Jiaozhou Bay was 0.054mg/L, slightly polluted. There were three main sources of PHC in the waters of Jiaozhou Bay, namely oil spill transportation at sea, open sea current transportation and river flow transportation. The PHC content transported through oil spill ranged from 0.042mg/L to 0.056mg/L, that transported through open sea current was 0.054 mg/L, and that transported through river flow ranged from 0.046mg/L to 0.075mg/L. Among them, the PHC content transported through river flow from Loushan River was 0.075mg/L, that from Haibo River was 0.070mg/L, andthat from Dagu River was 0.046mg/L. The PHC content transported through oil spills at sea, open sea currents and river flows caused slight pollution. Therefore, from May to August and then to October, the continuous transportation of much PHC content into the waters of Jiaozhou Bay kept elevating the low level of PHC contentin the waters of Jiaozhou Bay.

Suhardono, Sapta, Iva Yenis Septiariva, Mega Mutiara Sari, and I. Wayan Koko Suryawan. "Analysis of metal pollution index in waters in the central Java area, Indonesia." AQUATIC SCIENCE & MANAGEMENT 10, no. 2 (October 27, 2022): 35. http://dx.doi.org/10.35800/jasm.v10i2.40974.

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Central Java is one of the regions in Indonesia with a lot of water resources that must be appropriately managed. In addition, metal content in water bodies in Central Java must now be assessed to prevent health impacts that may be measurable. One of the methods to analyze the management of water bodies is the water quality index method. This study aimed to examine the water quality index due to metal contamination in water bodies in Central Java. Metal measurements were carried out using the AAS (Atomic Absorption Spectrophotometry) method. The value of the water quality index using the water quality index method for waters in Central Java in 2015-2018 was categorized to mild to moderately polluted, and only 2 locations were measured as heavily polluted. Two areas that are included in the heavily polluted category were the waters of Bulakan and Bojonegoro in 2016. To determine the cause of why the water quality index value being classified as moderately polluted and lightly polluted, we must look at the metal parameters that contribute the most to the index value. These parameters can be initial information on the pollutant source that causes pollution.

Yang, Dongfang, Xiaoju Zhang, and Sivakumar Manickam. "Study on the Track and Degree of Pb Content Transportation." E3S Web of Conferences 406 (2023): 02023. http://dx.doi.org/10.1051/e3sconf/202340602023.

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Heavy Pb pollution has been noted in many developed countries. This study examined Pb pollution in Jiaozhou Bay for human security. We used the survey data on the Jiaozhou Bay waters of May, September and October 1994, the results examines Pb content and its horizontal distribution in the surface water bodies, which showed that the in the waters of Jiaozhou Bay Pb content expresses the range of 0.12-2.48 μg/L, agreeing with the seawater standards of Class I and II. Moreover, it has been noted that by the view of Pb content, Pb content in May, September and October polluted the Jiaozhou Bay water bodies softly. In May, September and October, the Pb content in the waters of Jiaozhou Bay ranged from 0.12 to 1μg/L, 0.84 to 1.34 μg/L, and 0.92 to 2.48 μg/L. These results show that Pb content in May did not pollute the Jiaozhou Bay water bodies. While Pb content during September and October slightly polluted. Three sources transported mainly Pb content into Jiaozhou bay. These sources are rivers, land surface runoff and offshore ocean currents. The rivers transported the Pb content 0.47-2.48 μg/L, the land surface runoff 2μg/L and the offshore ocean currents 1.34 μg/L. It demonstrates that Pb slightly polluted rivers, land surface runoff and offshore ocean currents in the transportation of Pb. From May to October, rivers transported Pb content which varied significantly. In September, land surface runoff transported Pb content during the rainy season. In addition, the offshore currents also transported Pb content to the waters of Jiaozhou Bay. Human activities discharged Pb content to land and transported it to the ocean, relying on the land surface runoff and rivers. Thus, two channels were transporting Pb content on land to the ocean, increasing Pb content. Through ocean currents, Pb content was transported from the high-content water area to the low-content water area. Therefore, the Pb content transported by rivers and land surface runoff could raise concerns from humans.

Gayrat, Urazalievich Urazboev, Abdykarim Baymankulov, and Anvar Aknazarovich Reyimberganov. "PLANE WAVES ON SHALLOW POLLUTED WATERS." 3i: intellect, idea, innovation - интеллект, идея, инновация, no. 2 (2021): 54–59. http://dx.doi.org/10.52269/22266070_2021_2_54.

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Meenakshi, M. "Bioremediation Of Polluted Waters Using Nanoparticles." Journal of University of Shanghai for Science and Technology 24, no. 1 (January 4, 2022): 1–33. http://dx.doi.org/10.51201/jusst/21/121063.

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Water pollution is an issue of great concern worldwide, contamination by organic compounds, inorganic compounds and microorganisms. Bioremediation using microorganisms helps in the removal of toxic metals from the environment. The focus is on the heavy metals associated with environmental contamination, lead (Pb), cadmium (Cd), and chromium (Cr) which are potentially hazardous to ecosystems. In the present study textile effluent was collected, and subjected to Physicochemical treatment methods , Herbal-Metal nanocomposite was prepared and used to treat textile effluents. As a bioremediation study, the plant growth potential of treated effluents was evaluated using pot studies of an aquatic plant .Laboratory and field test results confirmed superior bioremediation efficiency and long-term effect. When compared to today’s most-efficient bioremediation technologies there is an efficient, fast, safe, and inexpensive way to clean up polluted waters through acceleration of natural bioremediation process. Nanotechnology provides an economical, convenient and ecofriendly means of wastewater remediation. The results obtained in this study shall be carried out as future studies using different types and concentrations of nanoparticles for the treatment of any types of effluents causing land and water pollution. There is a growing need for the development of novel, efficient, eco-friendly, and cost-effective approach for the remediation of inorganic metals released into the environment and to safeguard the ecosystem. In this regard, recent advances in microbes-base heavy metal have propelled bioremediation as a prospective alternative to conventional techniques.

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Дисертації з теми "Polluted waters":

Nyquist, Johanna. "Role of plants in treating metal-polluted waters in wetlands /." Stockholm : Department of Botany, Stockholm university, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-6985.

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Whitehurst, I. T. "Factors affecting the Gammarus to Asellus ratio in unpolluted and polluted waters." Thesis, University of Brighton, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384638.

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Güell, Martí Raquel. "Development of chemical separation processes for the treatment and monitoring of metallic cations and oxoanions in polluted waters." Doctoral thesis, Universitat de Girona, 2011. http://hdl.handle.net/10803/51663.

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The chemical contamination of natural waters is a global problem with a worldwide impact. Considering the relevance of this problem, this thesis is intended, on one hand, to develop different separation/preconcentration techniques based on membranes ability to permeate anions for the transport of toxic oxyanions of chromium(VI) and arsenic contained in aqueous matrices. In particular, we have investigated supported liquid membranes and polymer inclusion membranes, both of which contain the commercial quaternary ammonium salt Aliquat 336 as a carrier, as well as commercial anion exchange membranes. On the other hand, we have focused on the development of chemical sensors to facilitate the monitoring of several metals from different aqueous matrices. Thus, a selective optical sensor for Cr(VI) based on polymeric membranes containing Aliquat 336 as an ionophore has been designed. Additionally, mercury-based screen-printed electrodes have been evaluated for for cadmium, lead, copper and zinc detection.
La contaminació química de les aigües naturals és un problema global amb repercussió a nivell mundial. Donada la rellevància que té aquesta problemàtica, en la present tesi s’han desenvolupat d’una banda tècniques de separació/preconcentració basades en diferents sistemes de membrana en què el mecanisme de transport proposat és un bescanvi aniònic per als oxoanions tòxics de crom(VI) i arsènic presents en matrius aquoses. Concretament, s’ha treballat amb membranes líquides suportades que contenien el portador comercial Aliquat 336, membranes d’inclusió polimèriques amb el mateix portador i membranes de bescanvi aniònic comercials. D’altra banda, s’ha treballat en el desenvolupament de diferents sensors químics per monitoritzar diversos metalls presents en matrius aquoses. Així, s’ha dissenyat un sistema de sensor òptic selectiu a Cr(VI) basat en membranes polimèriques utilitzant també el portador Aliquat 336 i s’ha desenvolupat un sistema de monitorització per plom, coure, cadmi i zinc basat en microelèctrodes serigrafiats modificats amb mercuri.

Arimi, Arsou [Verfasser], and Detlef [Akademischer Betreuer] Bahnemann. "Visible light active photocatalysts for the degradation of drug residues in polluted waters / Arsou Arimi ; Betreuer: Detlef Bahnemann." Hannover : Gottfried Wilhelm Leibniz Universität Hannover, 2020. http://d-nb.info/1204459401/34.

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Liu, Chang. "Metal ions removal from polluted waters by sorption onto exhausted coffee waste. Application to metal finishing industries wastewater treatment." Doctoral thesis, Universitat de Girona, 2014. http://hdl.handle.net/10803/283705.

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A new technology for Cr(VI) and divalent metal ions removal based on metal sorption onto exhausted coffee waste has been developed. Physical and chemical characterization of exhausted coffee waste was explored as well as the role of structural and non structural compounds of the waste in metal ions sorption. Kinetics of Cr(VI) sorption from binary mixtures containing different Cr(VI) and Cu(II) molar ratios were carried out in a batch reactor. A synergistic effect of Cu(II) in Cr(VI) reduction and sorption was found. From the kinetic sets of data a kinetic model taking into account Cr(VI) reduction/sorption, reduced Cr(III) sorption and Cu(II)synergistic effect on sorption was developed. The model described quite accurately the overall process of Cr(VI) removal. Biosorption by coffee wastes followed by precipitation resulted to be an efficient and low cost technology to remove Cr(VI) and divalent metals from synthetic and industrial effluents from metal finishing industries
S'ha desenvolupat una tecnologia nova per a l'eliminació de Cr(VI) i metalls divalents basada en l'adsorció dels metalls en residus de marro de café. Es va dur a terme la caracterització físicoquímica del marro de café i es va investigar el paper dels components estructurals i no estructurals en l'adsorció de metalls. Emprant un tanc agitat es va estudiar la cinètica d'adsorció de Cr(VI) de mescles binàries de Cr(VI)-Cu(II) amb diferents relacions molars d'ambdos metalls. Es va trobar un efecte sinèrgic del coure sobre l'adsorció i la reducció de Cr(VI). Un model basat en la reducció/adsorció de Cr(VI), adsorció del Cr(III) format i l'efecte sinèrgic del coure va ser desenvolupat. El model va descriure adequadament el procés. La bioadsorció seguida de precipitació va resultar ser una tecnologia eficaç i de baix cost per eliminar Cr(VI) i metalls divalents d'aigües sintètiques i efluents d’indústries de tractament de superfícies

Zaugg, Louis. "Apport de l'imagerie hyperspectrale pour la caractérisation optique des eaux issues de rejets industriels." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPAST026.

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L'étude de l'application de la télédétection à la pollution de l'eau dans les bassins industriels est d'un grand intérêt pour une surveillance rapide et peu coûteuse de la pollution. Cette étude présente une méthode permettant de détecter les polluants et cartographier leur distribution spatiale dans les bassins industriels en utilisant les propriétés optiques inhérentes (IOPs) de l'eau, à savoir les coefficients d'absorption et de rétrodiffusion, dérivées de images hyperspectrales. Les IOPs des polluants des eaux industrielles restent mal connues. Les méthodes actuelles de télédétection sont spécifiques au site d'étude et nécessitent des mesures in situ pour calibrer des modèles empiriques. Une approche générique est proposée ici, basée sur le modèle semi-analytique de transfert radiatif de Lee et al. (1998), adapté pour prendre en compte les coefficients d'absorption et de rétrodiffusion des particules de polluants. Le modèle est ensuite inversé à l'aide d'une méthode multi-pixel alternée, appelée IWOC (Industrial Wastewater Optical Characterization), afin de cartographier la distribution spatiale des polluants. Les performances d'IWOC sont évaluées à l'aide de jeux de données modélisés sans bruit et avec bruit pour des cas d'eaux naturelles, des cas d'eaux dominées par l'absorption des cas d'eaux dominées par la rétrodiffusion. Les performances de la méthode IWOC sont également évaluées à l'aide d'images hyperspectrales aéroportées acquises au-dessus de zones d'étude d'intérêts. L'approche menée dans cette étude est un premier pas vers une méthode d'inversion générique pour la caractérisation optique des eaux issues de rejets industriels et la pollution dans l'eau. Avec plus de recherches, cette méthode pourrait déboucher sur une méthode opérationnelle
Investigating the application of remote sensing to water pollution in industrial ponds is of great interest for rapid and cost-effective pollution monitoring. This study presents a method to detect pollutants and map their spatial distribution in industrial ponds using the water inherent optical properties (IOPs), namely the absorption and backscattering coefficients, derived from hyperspectral imaging. The IOPs of industrial water pollutants remain poorly known. Current remote sensing methods are site-specific and require in situ measurements to calibrate empirically-based models. Here, a generic approach is proposed based on the semi-analytical radiative transfer model by Lee et al. (1998) adapted to take into account both the absorption and backscattering coefficients of pollutant particles. The model is then inverted using an alternating multi-pixel method, named IWOC (Industrial Wastewater Optical Characterization), to map the spatial distribution of the pollutants. The performances of IWOC are evaluated using noise-free and noisy simulated datasets for natural waters, absorption-dominated water cases and backscattering-dominated water cases. The performances of the IWOC method are also examined through hyperspectral airborne images acquired over relevant study areas. The approach conducted in this study is a first step towards a generic inversion method for the optical characterization of in waters from industrial discharges and pollution in water. Further research could lead to an operational method

Jackson, Paul P. "Removal of cadmium from polluted water by immobilized algae." Thesis, Durham University, 1990. http://etheses.dur.ac.uk/6184/.

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A feasibility study was planned to determine the efficiency of immobilized algal cells growing in a packed bed for removing Cd from commercial effluents. To select appropriate material for an immobilized cell system, twenty-five strains of algae isolated from heavy-metal contaminated environments of known water chemistry were tested for their ability to accumulate Cd. Before accumulation experiments were initiated, ion exchange resin was employed to demonstrate that EDTA in the medium did not complex Cd to a significant degree. Svnechococcus D562 cells subcultured in Cd accumulated the most metal; little was bound to the cell wall. A continuous culture of steady- state Svnechococcus D562 cells tolerated a lower maximum concentration of metal (3.4 mg 1(^-1) Cd) than batch- cultured cells (5 mg 1(^-1) Cd), indicating that metabolic status influences the toxicity of Cd. When flasks of calcium-alginate beads were challenged with Cd, up to 60 % of the added metal was bound within 16 h; however, further incubation did not reduce the pollutant concentration. Two axenic strains which accumulated the metal to a high concentration were then immobilized and tested for their capacity to remove Cd from the circulating medium. A packed-bed reactor containing Mougeotia D536 cells proved more effective at metal removal than Svnechococcus D562, but both species grew to a lower cell density at the effluent end of the column. The medium was then aerated to overcome such growth-limiting conditions, but this treatment inhibited Cd accumulation. Column-immobilized cells reduced Cd levels more effectively than inoculated, alginate beads in stationary flasks or free cells. Energy dispersive X-ray microanalysis located Cd only in particular Svnechococcus D562 polyphosphate bodies (those with a high Ca to K ratio); peaks for Zn, Pb, Fe, Mn and Ba were also detected in algae isolated from the field. Scanning proton microanalysis provided information on the distribution of macro- and micro-elements throughout the two strains of cyanobacteria and two strains of algae selected from the Durham Culture Collection and demonstrated the presence of Cd in Klebsormidium rivulare D537.Detergent-sensitive spheroplasts of Svnechococcus D562 were produced by lysozyme and protease digestion, but were not viable for growth. To observe the extracellular mucilage of this strain by EM, lysozyme digestion proved imperative for effective ruthenium red staining to convert the material into an electron opaque material. From cultures of Svnechococcus D562 grown with or without Cd a 14 kD plasmid was isolated, which contained two Eco RI, two Bam HI and five Hind III restriction sites. A radiolabelled oligonucleotide probe based on part of the nucleotide sequence of a metallothionein from Svnechococcus FCC 6301 did not bind to a genomic and plasmid blot of Svnechococcus D562 DNA. The putative Cd-binding peptides ((yEC)(_n)G's) that were discovered only bound significant quantities of the metal when cells were exposed to 6.17 mg 1(^-1) Cd for 2 days at the end of their log-growth phase. Indigenous peptides failed to bind substantial amounts of the metal and the presence of Cd throughout growth did not influence the quantity of chelated Cd, except for Mougeotia D536. The pH of half displacement for (yEQjp's from this strain is comparable with that of other species. Reversed-phase HPLC of the peptides from Mougeotia D536 generated a thiol profile similar to that recorded for the Cd-binding peptides of Datura innoxia. The Cd-induced ultrastructural distortions that were recorded include potential Ca / P / Cd precipitates in Mougeotia D536, the loss of polyglucoside granules from Calothrix D184 together with a relaxation of its thylakoid packing and a lack of plastoglobuli in Cd-exposed Klebsormidium D537. The space between an immobilized cell and the matrix either represents shrinkage of the matrix during dehydration or mucilage which does not bind electron dense stains. Release of alkaline phosphatase into the medium by Svnechococcus D562, provided suitable material to study the inhibitory effects of Cd upon P hydrolysis. Ultrafiltration membranes proved effective as initial step towards enzyme purification and for the determination of activity under sub-optimal pH conditions. At pH 7.0, the activity of an enzyme concentrate was inhibited when 1 and 10 mg 1(^-1) Cd were added to the assay medium, but the presence of this metal in the growth medium did not reduce activity. One-dimensional SDS PAGE revealed only one protein difference between strains grown with or without Cd; a reduction in the staining intensity of a 17 kD band of Calothrix D184.

Byrne, J. Anthony. "Titanium dioxide photocatalysis for the treatment of polluted water." Thesis, University of Ulster, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338319.

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Bui, Thi Kim Anh, Dinh Kim Dang, Trung Kien Nguyen, Ngoc Minh Nguyen, Quang Trung Nguyen, and Hong Chuyen Nguyen. "Phytoremediation of heavy metal polluted soil and water in Vietnam." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-176919.

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Phytoremediation has been intensively studied during the past decade due to its cost-effectiveness and environmental harmonies. Most of the studies on treatment of heavy metal pollution in soil and water by plant species have been done in developed countries but are limited in Vietnam. In this study, we presented some research results of phytoremediation of polluted soils and water with heavy metals that were done by Institute of Environmental Technology for several last years. For treatment of heavy metal pollution in the water, some plants have great ability to accumulate heavy metals such as Vetiveria zizanioides, Phragmites australis, Eichhornia crassipes, Pistia stratiotes, Ipomoea aquatica, Nypa fruticans and Enhydra fluctuans. The heavy metal uptake into shoots and roots of 33 indigenous plant species in Thai Nguyen province was also determined. Two species of the plants investigated, Pteris vittata L. and Pityrogramma calomelanos L. were As hyperaccumulators, containing more than 0.1% As in their shoots while Eleusine indica, Cynodon dactylon, Cyperus rotundus and Equisetum ramosissimum accumulated very high Pb (0.15-0.65%) and Zn (0.22-1.56%) concentrations in their roots. Some experiments to clarify the potential of several plants as good candidates for phytoremediation of polluted soil by heavy metals were carried out in our institute
Phương pháp sử dụng thực vật để xử lý ô nhiễm đã được nghiên cứu nhiều trong thập kỷ qua do chi phí thấp và thân thiện với môi trường. Hầu hết các nghiên cứu về xử lý ô nhiễm kim loại nặng trong đất và nước bằng thực vật đã được thực hiện ở các nước phát triển nhưng ít có tại Việt Nam. Trong nghiên cứu này, chúng tôi giới thiệu một số kết quả dùng công nghệ thực vật để xử lý ô nhiễm kim loại nặng trong đất và nước tại Viện Công nghệ môi trường trong những năm gần đây. Dối với xử lý ô nhiễm kim loại nặng trong nước, một số thực vật có khả năng tích lũy tốt kim loại nặng như Vetiveria zizanioides, Phragmites australis, Eichhornia crassipes, Pistia stratiotes, Ipomoea aquatica, Nypa fruticans và Enhydra fluctuans. Sự hấp thụ và tích lũy kim loại nặng trong phần trên mặt đất và rễ của 33 loài thực vật bản địa tại Thái Nguyên cũng đã được xác định. Hai loài thực vật khảo sát là Pteris vittata và Pityrogramma calomelanos là những loài siêu tích lũy As, chứa hơn 0,1% As trong phần trên mặt đất của cây. leusine indica, Cynodon dactylon, Cyperus rotundus và Equisetum ramosissimum tích lũy Pb (0,15-0,65%) và Zn (0,22-1,56%) rất cao trong rễ. Một số thí nghiệm đánh giá tiềm năng của một số thực vật là đối tượng tốt cho xử lý ô nhiễm kim loại nặng trong đất đã được tiến hành trong phòng thí nghiệm của Viện Công nghệ môi trường

Bui, Thi Kim Anh, Dinh Kim Dang, Trung Kien Nguyen, Ngoc Minh Nguyen, Quang Trung Nguyen, and Hong Chuyen Nguyen. "Phytoremediation of heavy metal polluted soil and water in Vietnam." Technische Universität Dresden, 2014. https://tud.qucosa.de/id/qucosa%3A28882.

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Phytoremediation has been intensively studied during the past decade due to its cost-effectiveness and environmental harmonies. Most of the studies on treatment of heavy metal pollution in soil and water by plant species have been done in developed countries but are limited in Vietnam. In this study, we presented some research results of phytoremediation of polluted soils and water with heavy metals that were done by Institute of Environmental Technology for several last years. For treatment of heavy metal pollution in the water, some plants have great ability to accumulate heavy metals such as Vetiveria zizanioides, Phragmites australis, Eichhornia crassipes, Pistia stratiotes, Ipomoea aquatica, Nypa fruticans and Enhydra fluctuans. The heavy metal uptake into shoots and roots of 33 indigenous plant species in Thai Nguyen province was also determined. Two species of the plants investigated, Pteris vittata L. and Pityrogramma calomelanos L. were As hyperaccumulators, containing more than 0.1% As in their shoots while Eleusine indica, Cynodon dactylon, Cyperus rotundus and Equisetum ramosissimum accumulated very high Pb (0.15-0.65%) and Zn (0.22-1.56%) concentrations in their roots. Some experiments to clarify the potential of several plants as good candidates for phytoremediation of polluted soil by heavy metals were carried out in our institute.
Phương pháp sử dụng thực vật để xử lý ô nhiễm đã được nghiên cứu nhiều trong thập kỷ qua do chi phí thấp và thân thiện với môi trường. Hầu hết các nghiên cứu về xử lý ô nhiễm kim loại nặng trong đất và nước bằng thực vật đã được thực hiện ở các nước phát triển nhưng ít có tại Việt Nam. Trong nghiên cứu này, chúng tôi giới thiệu một số kết quả dùng công nghệ thực vật để xử lý ô nhiễm kim loại nặng trong đất và nước tại Viện Công nghệ môi trường trong những năm gần đây. Dối với xử lý ô nhiễm kim loại nặng trong nước, một số thực vật có khả năng tích lũy tốt kim loại nặng như Vetiveria zizanioides, Phragmites australis, Eichhornia crassipes, Pistia stratiotes, Ipomoea aquatica, Nypa fruticans và Enhydra fluctuans. Sự hấp thụ và tích lũy kim loại nặng trong phần trên mặt đất và rễ của 33 loài thực vật bản địa tại Thái Nguyên cũng đã được xác định. Hai loài thực vật khảo sát là Pteris vittata và Pityrogramma calomelanos là những loài siêu tích lũy As, chứa hơn 0,1% As trong phần trên mặt đất của cây. leusine indica, Cynodon dactylon, Cyperus rotundus và Equisetum ramosissimum tích lũy Pb (0,15-0,65%) và Zn (0,22-1,56%) rất cao trong rễ. Một số thí nghiệm đánh giá tiềm năng của một số thực vật là đối tượng tốt cho xử lý ô nhiễm kim loại nặng trong đất đã được tiến hành trong phòng thí nghiệm của Viện Công nghệ môi trường.

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Книги з теми "Polluted waters":

Stefanow, Jennifer. Polluted waters. Singapore: Times Editions, 2004.

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Stefanow, Jennifer. Polluted waters. Chicago, Ill: Raintree, 2004.

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Kumar, Arvind. Ecology of polluted waters. New Delhi: A.P.H. Pub., 2002.

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Washington (State). Dept. of Ecology. Watershed Management Section. and Washington (State). Dept. of Ecology. Water Quality Program., eds. Workshops on water quality assessment including update of "polluted waters" list. Olympia, WA: Washington State Dept. of Ecology, Water Quality Program, 2004.

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United States. General Accounting Office. RCED. Clean Water Act: Proposed revisions to EPA regulations to clean up polluted waters. Washington, D.C. (P.O. Box 37050, Washington, D.C. 20013): The Office, 2000.

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Great Britain. Standing Committee of Analysts., ed. Chemical oxygen demand (dichromate value) of polluted and waste waters, 1986. 2nd ed. London: H.M.S.O., 1987.

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Whitehurst, Ian T. Factors affecting the gammarus to asellus ratio in unpolluted and polluted waters. [Brighton: Brighton Polytechnic, Dept. of Civil Engineering], 1988.

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College, Maryland Sea Grant, National Undersea Research Program (U.S.), and Undersea and Hyperbaric Medical Society., eds. The Hazards of diving in polluted waters: Proceedings of an international symposium. College Park, Md: The College, 1992.

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United States. General Accounting Office., ed. Water quality: Inconsistent state approaches complicate nation's efforts to identify its most polluted waters : report to Congressional requesters. [Washington, D.C: United States General Accounting Office, 2002.

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Mabbett, Amanda Natasha. The reduction and recovery of chromium (VI) from industrially polluted waste waters using sulphate-reducing bacteria. Birmingham: University of Birmingham, 2001.

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Частини книг з теми "Polluted waters":

Bahnemann, Detlef. "Photocatalytic Detoxification of Polluted Waters." In The Handbook of Environmental Chemistry, 285–351. Berlin, Heidelberg: Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-540-69044-3_11.

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Younger, Paul L., Steven A. Banwart, and Robert S. Hedin. "Active Treatment of Polluted Mine Waters." In Mine Water, 271–309. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-010-0610-1_4.

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Younger, Paul L., Steven A. Banwart, and Robert S. Hedin. "Passive Treatment of Polluted Mine Waters." In Mine Water, 311–96. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-010-0610-1_5.

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Oziolor, Elias M., and Cole W. Matson. "Adaptation in Polluted Waters: Lessons from Killifish." In Development and Environment, 355–75. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-75935-7_14.

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Vanek, Tomas, Radka Podlipna, Zuzana Fialova, Sarka Petrova, and Petr Soudek. "Uptake of Xenobiotics from Polluted Waters by Plants." In Xenobiotics in the Urban Water Cycle, 431–44. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-3509-7_23.

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Keng, Pei-Sin, Siew-Ling Lee, Sie-Tiong Ha, Yung-Tse Hung, and Siew-Teng Ong. "Cheap Materials to Clean Heavy Metal Polluted Waters." In Environmental Chemistry for a Sustainable World, 335–414. Dordrecht: Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-6836-9_8.

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Grizzle, John M. "Fish Neoplasms Found at High Prevalence in Polluted Waters." In In Situ Evaluation of Biological Hazards of Environmental Pollutants, 151–61. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4684-5808-4_14.

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Peldszus, S., G. Gerhard, and H. F. Schöler. "GC Determination of Chlorophenoxy Acids in Minor Polluted Waters." In Organic Micropollutants in the Aquatic Environment, 331–36. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3356-2_34.

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Humeniuk, Halyna, Olena Voloshyn, and Volodymyr Voloshyn. "Seasonal dynamics of cadmium and plumbum in the Turia and Pripyat rivers." In Proceedings e report, 540–46. Florence: Firenze University Press, 2020. http://dx.doi.org/10.36253/978-88-5518-147-1.54.

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The anthropogenic pressure on aquatic ecosystems leads to a significant transformation of their quantitative and qualitative composition. Many rivers of Ukraine are polluted. The object of research was the surface waters of the rivers Pripyat and Turiya (Volyn region, Ukraine). Analysis of the qualitative and quantitative composition of toxicants (Cd, Pb) showed that the waters of the rivers have high level of pollution. A negative phenomenon in the studied reservoirs is a significant excess of concentrations of heavy metals: lead in 118 times and cadmium in 110 times in August.

Jain, Puneet P., Zufeshan Nahar Ali, Srishti J. Sisodiya, and Shinomol George Kunnel. "Tree Barks for Bioremediation of Heavy Metals from Polluted Waters." In Methods for Bioremediation of Water and Wastewater Pollution, 277–88. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-48985-4_13.

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Тези доповідей конференцій з теми "Polluted waters":

Purser, P., and H. Kunz. "Prologue to diving in polluted waters." In OCEANS '85 - Ocean Engineering and the Environment. IEEE, 1985. http://dx.doi.org/10.1109/oceans.1985.1160109.

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Jones, C., A. Goodman, T. Cox, S. Friedman, and S. Schultz. "Scuba diving in polluted coastal waters." In OCEANS '85 - Ocean Engineering and the Environment. IEEE, 1985. http://dx.doi.org/10.1109/oceans.1985.1160182.

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Daily, O., and J. Coolbaugh. "Infectious disease hazards associated with polluted waters." In OCEANS '85 - Ocean Engineering and the Environment. IEEE, 1985. http://dx.doi.org/10.1109/oceans.1985.1160180.

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Coolbaugh, J., and O. Daily. "Protection of divers in biologically polluted waters." In OCEANS '85 - Ocean Engineering and the Environment. IEEE, 1985. http://dx.doi.org/10.1109/oceans.1985.1160181.

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Ruiz-Agudo, Encarnación, Sarah Bonilla-Correa, Maria Asta, and Ricardo Millán Becerro. "Remediation of polluted waters by mineral precipitation strategies." In Goldschmidt2023. France: European Association of Geochemistry, 2023. http://dx.doi.org/10.7185/gold2023.20686.

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Ekperusi, Abraham O., Francis D. Sikoki, and Eunice O. Nwachukwu. "Ecological Remediation of Heavy Metals in Crude Oil Polluted Waters Using Duckweed." In SPE Nigeria Annual International Conference and Exhibition. Society of Petroleum Engineers, 2019. http://dx.doi.org/10.2118/198773-ms.

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Feng, Qiyan, Ping Lu, Xiangdong Li, Qingjun Meng, and Yue Sun. "Electrocoagulation-Microfiltration for Drinking Water Treatment: A Case Study with the Typical Micro-Polluted Source Waters." In 2009 3rd International Conference on Bioinformatics and Biomedical Engineering (iCBBE 2009). IEEE, 2009. http://dx.doi.org/10.1109/icbbe.2009.5162764.

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Radulescu, Victorita. "METHOD FOR CONTROLLING THE GROUNDWATER POLLUTED BY THE SURFACE WATERS THROUGH INJECTION WELLS." In 20th SGEM International Multidisciplinary Scientific GeoConference Proceedings 2020. STEF92 Technology, 2020. http://dx.doi.org/10.5593/sgem2020/1.1/s02.077.

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Guan, Qing, Ziqi Guo, Caixia Liu, and Xia Lei. "A tentative study of water quality retrieval in low-level-polluted Case II waters using analytical model." In IGARSS 2012 - 2012 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 2012. http://dx.doi.org/10.1109/igarss.2012.6350872.

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Bhatti, M. Ilyas. "A Perspective on the History of Environmental Regulations—Successes and Challenges in Reclaiming Polluted Waters." In World Environmental and Water Resources Congress 2019. Reston, VA: American Society of Civil Engineers, 2019. http://dx.doi.org/10.1061/9780784482339.017.

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Звіти організацій з теми "Polluted waters":

Groudeva, Veneta, Irena Spasova, Stoyan Groudev, Marina Nicolova, Plamen Georgiev, Mihail Iliev, and Ralitsa Ralitsa. Treatment of Heavy Polluted Acid Drainage Waters by Means of a Passive System. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, October 2021. http://dx.doi.org/10.7546/crabs.2021.10.09.

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Groudev, Stoyan, Irena Spasova, Veneta Groudeva, Marina Nicolova, Plamen Georgiev, Mihail Iliev, and Ralitsa Ilieva. Passive Treatment of Metal-polluted Waters in Combination with Electricity Generation by Microbial Fuel Cells. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, January 2020. http://dx.doi.org/10.7546/crabs.2020.01.09.

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Walker, S., A. Gross, D. Jassby, and W. Tester. Energy, nutrient and water recovery from dairy waste. Israel: United States-Israel Binational Agricultural Research and Development Fund, 2020. http://dx.doi.org/10.32747/2020.8134167.bard.

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The overall goal of this project was to investigate an innovative integrated approach to extracting energy, clean water, and valuable nutrients efficiently from the estimated 180-190 million cubic meters of effluent left behind after anaerobic digestion (AD) of dairy manure and related food wastes. In addition to producing new value streams, this process can reduce or eliminate the need for application of anaerobic digestate on land, which can pollute air and water.

Scamehorn, John F., Richard W. Taylor, and Cynthia E. Palmer. Removal of Radioactive Cations and Anions from Polluted Water using Ligand-Modified Colloid-Enhanced Ultrafiltration. Office of Scientific and Technical Information (OSTI), December 2001. http://dx.doi.org/10.2172/789796.

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Scamehorn, John F., Cynthia E. Palmer, and Richard W. Taylor. Removal of Radioactive Cations and Anions from Polluted Water Using Ligand-Modified Colloid-Enhanced Ultrafiltration. Office of Scientific and Technical Information (OSTI), June 1999. http://dx.doi.org/10.2172/828491.

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Goswami, Omanjana, and Stacy Woods. Waste Deep: How Tyson Foods Pollutes US Waterways and Which States Bear the Brunt. Union of Concerned Scientists, April 2024. http://dx.doi.org/10.47923/2024.15384.

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Tyson Foods, the nation’s largest meat and poultry producer, released hundreds of millions of pounds of pollutants from its slaughterhouses and processing plants into local waterways across the United States between 2018 and 2022. Water pollutants from Tyson plants pose a risk to people and the environment and include large amounts of nitrogen and phosphorus. These nutrients feed algal blooms that clog water infrastructure, exacerbate asthma and other respiratory conditions, and contribute to dead zones that harm fish, shellfish, and people. Many of these facilities are also located close to federally defined critical habitats for endangered or threatened species. This analysis adds to a broader critique of Tyson Foods and the impact of this megacorporation on communities, consumers, farmers, and workers. Policymakers can reduce the damage Tyson causes by tightening wastewater pollution standards, better enforcing discharge limits, and cracking down on the corporate consolidation that enables Tyson’s excesses.

Scamehorn, John F., Richard W. Taylor, and Cynthia E. Palmer. Removal of Radioactive Cations Anions from Polluted Water Using Ligand-Modified Colloid-Enhanced Ultrafiltration (60041-OK). Office of Scientific and Technical Information (OSTI), June 2000. http://dx.doi.org/10.2172/828493.

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Scamehorn, J. F., C. E. Palmer, and R. W. Taylor. Removal of radioactive cations and anions from polluted water using ligand-modified colloid-enhanced ultrafiltration. 1998 annual progress report. Office of Scientific and Technical Information (OSTI), June 1998. http://dx.doi.org/10.2172/13751.

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Lowney, Martin S., Scott F. Beckerman, Scott C. Barras, and Thomas W. Seamans. Gulls. U.S. Department of Agriculture, Animal and Plant Health Inspection Service, May 2018. http://dx.doi.org/10.32747/2018.7208740.ws.

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Abundant gull populations in North America have led to a variety of conflicts with people. Gulls cause damage at aquaculture facilities and other properties, and often collide with aircraft. Their use of structures on and near water results in excessive amounts of bird droppings on boats and docks. Their presence near outdoor dining establishments, swimming beaches, and recreational sites can lead to negative interactions with people. Large amounts of gull fecal material pollutes water and beaches resulting in drinking water contamination and swim bans. A combination of dispersal techniques, exclusion and limited lethal control may reduce damage to an acceptable level. Gulls are classified as a migratory bird species and are protected by federal and, in most cases, state laws. In the United States, gulls may be taken only with a permit issued by the U.S. Fish and Wildlife Service. Occasionally, an additional permit is required from the state wildlife management agency.

Just, Richard E., Eithan Hochman, and Sinaia Netanyahu. Problems and Prospects in the Political Economy of Trans-Boundary Water Issues. United States Department of Agriculture, February 2000. http://dx.doi.org/10.32747/2000.7573997.bard.

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The objective of this research was to develop and apply a conceptual framework for evaluating the potential of trans-boundary bargaining with respect to water resource sharing. The research accomplished this objective by developing a framework for trans-boundary bargaining, identifying opportunities for application, and illustrating the potential benefits that can be gained thereby. Specifically, we have accomplished the following: - Developed a framework to measure the potential for improving economic efficiency considering issues of political feasibility and sustainability that are crucial in trans-boundary cooperation. - Used both cooperative and non-cooperative game theory to assess feasible coalitions among the parties involved and to model potential bargaining procedures. - Identified empirically alternative schemes of cooperation that both improve upon the economic efficiency of present water usage and appease all of the cooperating parties. - Estimated the potential short-run and long-run affects of water reallocation on the agricultural sector and used this information to understand potential strategies taken by the countries in bargaining processes. - Performed case studies in Israeli-Jordanian relations, the relationship of Israel to the Palestinian Authority, and cooperation on the Chesapeake Bay. - Published or have in process publication of a series of refereed journal articles. - Published a book which first develops the theoretical framework, then presents research results relating to the case studies, and finally draws implications for water cooperation issues generally. Background to the Topic The increase in water scarcity and decline in water quality that has resulted from increased agricultural, industrial, and urban demands raises questions regarding profitability of the agricultural sector under its present structure. The lack of efficient management has been underscored recently by consecutive years of drought in Israel and increased needs to clean up the Chesapeake Bay. Since agriculture in the Middle East (Chesapeake Bay) is both the main water user (polluter) and the low-value user (polluter), a reallocation of water use (pollution rights) away from agriculture is likely with further industrial and urban growth. Furthermore, the trans-boundary nature of water resources in the case of the Middle East and the Chesapeake Bay contributes to increased conflicts over the use of the resources and therefore requires a political economic approach. Major Conclusions, Solutions, Achievements and Implications Using game theory tools, we critically identify obstacles to cooperation. We identify potential gains from coordination on trans-boundary water policies and projects. We identify the conditions under which partial (versus grand) coalitions dominate in solving water quality disputes among riparian countries. We identify conditions under which linking water issues to unrelated disputes achieves gains in trans-boundary negotiations. We show that gains are likely only when unrelated issues satisfy certain characteristics. We find conditions for efficient water markets under price-determined and quantity-determined markets. We find water recycling and adoption of new technologies such as desalination can be part of the solution for alleviating water shortages locally and regionally but that timing is likely to be different than anticipated. These results have been disseminated through a wide variety of publications and oral presentations as well as through interaction with policymakers in both countries.