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Artykuły w czasopismach na temat „Contaminant transfers”

Autor: Grafiati

Data publikacji: 28 września 2024

Data aktualizacji: 31 lipca 2025

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1

Sterpenich, J., E. C. Gaucher, N. H. Schovsbo, J. G. Lerat, R. Mosser-Ruck, and J. Pironon. "Geochemistry of Aquifer in Contact with Alum Shale: Evidence of Limited Contaminant Transfers." Procedia Earth and Planetary Science 17 (2017): 786–89. http://dx.doi.org/10.1016/j.proeps.2017.01.029.

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Rivoira, Luca, Michele Castiglioni, Nicola Nurra, et al. "Polycyclic Aromatic Hydrocarbons and Polychlorinated Biphenyls in Seawater, Sediment and Biota of Neritic Ecosystems: Occurrence and Partition Study in Southern Ligurian Sea." Applied Sciences 12, no. 5 (2022): 2564. http://dx.doi.org/10.3390/app12052564.

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The Mediterranean Sea is subjected to a high anthropic pressure, which determines direct or indirect discharges of persistent organic pollutants deriving from intensive industrial activities. These compounds could easily enter and contaminate the whole marine compartment, with possible transfers (and contamination) among water, sediment and biota. Based on the above-mentioned assumptions, in this work we studied the presence of 16 polycyclic aromatic hydrocarbons (PAHs) and 14 dioxin and non-dioxin-like polychlorinated biphenyls (PCBs) in the neritic protected marine area of the Southern Ligur

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Younsi, Zohir, Lounes Koufi, and Hassane Naji. "Numerical study of the effects of ventilated cavities outlet location on thermal comfort and air quality." International Journal of Numerical Methods for Heat & Fluid Flow 29, no. 11 (2019): 4462–83. http://dx.doi.org/10.1108/hff-09-2018-0518.

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Purpose A comprehensive investigation on the outlet air position effects on the thermal comfort and air quality has been achieved. In addition, airflow and temperature distributions in ventilated cavities filled with an air-CO2 mixture with mixed convection are predicted. The airflow enters from the cavity through an opening in the lower side of the left vertical wall and exits through the opening in one wall of the cavity. This paper aims to investigate the outlet location effect, four different placement configurations of output ports are considered. Three of them are placed on the upper sid

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Laceby, J. P., C. Chartin, O. Evrard, Y. Onda, L. Garcia-Sanchez, and O. Cerdan. "Rainfall erosivity in subtropical catchments and implications for erosion and particle-bound contaminant transfer: a case-study of the Fukushima region." Hydrology and Earth System Sciences Discussions 12, no. 7 (2015): 7225–66. http://dx.doi.org/10.5194/hessd-12-7225-2015.

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Abstract. The Fukushima Dai-ichi nuclear power plant (FDNPP) accident in March 2011 resulted in a significant fallout of radiocesium over the Fukushima region. After reaching the soil surface, radiocesium is almost irreversibly bound to fine soil particles. Thereafter, rainfall and snow melt run-off events transfer particle-bound radiocesium downstream. Erosion models, such as the Universal Soil Loss Equation (USLE), depict a proportional relationship between rainfall and soil erosion. As radiocesium is tightly bound to fine soil and sediment particles, characterizing the rainfall regime of th

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Warmka, Anna, Erin L. Cortus, Kevin A. Janni, Abby Schuft, and Sally Noll. "Opportunities and Methods for Using Fluorescent Gel as a Proxy for Pathogen Transfer in Biosecurity Research." Journal of Agricultural Safety and Health 29, no. 1 (2023): 57–70. http://dx.doi.org/10.13031/jash.15253.

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Highlights While fluorescing gel may evaporate from a surface, luminance of the surface does not change. Fluorescing gel exhibits thresholds beyond which additional gel density does not increase luminance. Fluorescing gel only transfers between surfaces when it is wet. There are limits to relating luminance and mass transfer. Fluorescent material is a useful proxy for contamination transfer demonstration and research. Abstract. Glo Germ fluorescing material is a popular tool for teaching and researching contaminant transfer in and out of agriculture. The objectives of this paper were to: (1) q

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Monaghan, R. M., L. C. Smith, and R. W. Muirhead. "Pathways of contaminant transfers to water from an artificially-drained soil under intensive grazing by dairy cows." Agriculture, Ecosystems & Environment 220 (March 2016): 76–88. http://dx.doi.org/10.1016/j.agee.2015.12.024.

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Perou, A. L., and J. M. Vergnaud. "Process of contaminant transfers during coextrusion of food packages made from recycled layer and virgin polymer layer." Plastics, Rubber and Composites 28, no. 2 (1999): 74–79. http://dx.doi.org/10.1179/146580199101540132.

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Tisseau, M. A., N. Fauchon, J. Cavard, and T. Vandevelde. "Pesticide contamination of water resources: a case study - the rivers in the Paris region." Water Science and Technology 34, no. 7-8 (1996): 147–52. http://dx.doi.org/10.2166/wst.1996.0614.

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For a number of years, the Compagnie Générale des Eaux has been studying pesticide contamination of surface water in order to better understand the origins and the main transfer mechanisms of these pollutants into water resources. Sampling campaigns are being carried out on the three main rivers of the Paris area to monitor a number of products from the triazine and urea families. This monitoring has confirmed the extension of agricultural non-point source pollution. The products being sought are present in the three rivers and, in most cases, in significant concentrations. Atrazine is the mos

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Tappin, A. D., P. J. Statham, J. D. Burton, and S. Gellers-Barkmann. "Distributions and fluxes of contaminant metals in the North Sea: comparisons between field measurements and model simulations using NOSTRADAMUS." Environmental Chemistry 5, no. 1 (2008): 51. http://dx.doi.org/10.1071/en07033.

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Environmental context. The North Sea, which is of significant ecological, economic and recreational value to NW Europe, has for many years received enhanced inputs of contaminant metals arising from human activity around its shores. Fluxes of copper, nickel, zinc, chromium and other constituents throughout the southern North Sea were estimated using a numerical model in order to identify the main sources and sinks for these metals. Comparison of model output with independent and other data showed good agreement in general. The results indicate that models of the kind developed here can be used

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10

Monaghan, RM, DJ Houlbrooke, and LC Smith. "The use of low-rate sprinkler application systems for applying farm dairy effluent to land to reduce contaminant transfers." New Zealand Journal of Agricultural Research 53, no. 4 (2010): 389–402. http://dx.doi.org/10.1080/00288233.2010.505943.

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Laceby, J. Patrick, Caroline Chartin, Olivier Evrard, Yuichi Onda, Laurent Garcia-Sanchez, and Olivier Cerdan. "Rainfall erosivity in catchments contaminated with fallout from the Fukushima Daiichi nuclear power plant accident." Hydrology and Earth System Sciences 20, no. 6 (2016): 2467–82. http://dx.doi.org/10.5194/hess-20-2467-2016.

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Abstract. The Fukushima Daiichi nuclear power plant (FDNPP) accident in March 2011 resulted in the fallout of significant quantities of radiocesium over the Fukushima region. After reaching the soil surface, radiocesium is quickly bound to fine soil particles. Thereafter, rainfall and snowmelt run-off events transfer particle-bound radiocesium downstream. Characterizing the precipitation regime of the fallout-impacted region is thus important for understanding post-deposition radiocesium dynamics. Accordingly, 10 min (1995–2015) and daily precipitation data (1977–2015) from 42 meteorological s

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12

Coxon, Catherine, and David Drew. "Interdependence of groundwater and surface water in lowland karst areas of western Ireland: management issues arising from water and contaminant transfers." Geological Society, London, Special Publications 182, no. 1 (2000): 81–88. http://dx.doi.org/10.1144/gsl.sp.2000.182.01.08.

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Newby, D. T., T. J. Gentry, and I. L. Pepper. "Comparison of 2,4-Dichlorophenoxyacetic Acid Degradation and Plasmid Transfer in Soil Resulting from Bioaugmentation with Two Different pJP4 Donors." Applied and Environmental Microbiology 66, no. 8 (2000): 3399–407. http://dx.doi.org/10.1128/aem.66.8.3399-3407.2000.

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ABSTRACT A pilot field study was conducted to assess the impact of bioaugmentation with two plasmid pJP4-bearing microorganisms: the natural host, Ralstonia eutropha JMP134, and a laboratory-generated strain amenable to donor counterselection,Escherichia coli D11. The R. eutropha strain contained chromosomal genes necessary for mineralization of 2,4-dichlorophenoxyacetic acid (2,4-D), while the E. colistrain did not. The soil system was contaminated with 2,4-D alone or was cocontaminated with 2,4-D and Cd. Plasmid transfer to indigenous populations, plasmid persistence in soil, and degradation

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Grosser, Robert J., Michael Friedrich, David M. Ward, and William P. Inskeep. "Effect of Model Sorptive Phases on Phenanthrene Biodegradation: Different Enrichment Conditions Influence Bioavailability and Selection of Phenanthrene-Degrading Isolates." Applied and Environmental Microbiology 66, no. 7 (2000): 2695–702. http://dx.doi.org/10.1128/aem.66.7.2695-2702.2000.

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ABSTRACT The sorption of organic contaminants by natural organic matter (NOM) often limits substrate bioavailability and is an important factor affecting microbial degradation rates in soils and sediments. We hypothesized that reduced substrate bioavailability might influence which microbial assemblages are responsible for contaminant degradation under enrichment culture conditions. Our primary goal was to characterize enrichments in which different model organic solid phases were used to establish a range of phenanthrene bioavailabilities for soil microorganisms. Phenanthrene sorption coeffic

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MacLachlan, D. J. "Estimating the transfer of contaminants in animal feedstuffs to livestock tissues, milk and eggs: a review." Animal Production Science 51, no. 12 (2011): 1067. http://dx.doi.org/10.1071/an11112.

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Literature studies on the transfer from livestock feed of residues of organic contaminants, metals and mycotoxins to edible livestock commodities have been reviewed. This review focuses on contaminants relevant to risks assessment of livestock feeds, especially those contaminants for which regulatory standards have been established. Those involved in the supply of livestock feed need to be aware of maximum levels for various contaminants in food and develop strategies to ensure food derived from livestock complies. An impediment to profiling feed ingredients has been the lack of accessible inf

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Gatel, Laura, Claire Lauvernet, Nadia Carluer, Sylvain Weill, and Claudio Paniconi. "Sobol Global Sensitivity Analysis of a Coupled Surface/Subsurface Water Flow and Reactive Solute Transfer Model on a Real Hillslope." Water 12, no. 1 (2019): 121. http://dx.doi.org/10.3390/w12010121.

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The migration and fate of pesticides in natural environments is highly complex. At the hillslope scale, the quantification of contaminant fluxes and concentrations requires a physically based model. This class of model has recently been extended to include coupling between the surface and the subsurface domains for both the water flow and solute transport regimes. Due to their novelty, the relative importance of and interactions between the main model parameters has not yet been fully investigated. In this study, a global Sobol sensitivity analysis is performed on a vineyard hillslope for a on

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Mangas-Suarez, Mario, Efren Garcia-Ordiales, Julio Antonio Pérez, et al. "Enrichment of Metals in the Sediments of an Industrially Impacted Estuary: Geochemistry, Dispersion and Environmental Considerations." Applied Sciences 12, no. 21 (2022): 10998. http://dx.doi.org/10.3390/app122110998.

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The city of Avilés is one of the most industrialized cities in the north of Spain and, accordingly, its estuary and coastal area have been subjected to great anthropic impacts in the last 100 years. This research attempts to establish a preliminary scenario of the geochemical and environmental status of both coastal and estuarine sediments in this area. For this study, a total of 96 sediment samples were collected, processed and analyzed to quantify the granulometric distribution of the sediments, as well as their concentrations of organic carbon and main metal(oids) that may cause an environm

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Veloz Martínez, Irvin, Jackeline Iturbe Ek, Ethan C. Ahn, and Alan O. Sustaita. "Molecularly imprinted polymers via reversible addition–fragmentation chain-transfer synthesis in sensing and environmental applications." RSC Advances 12, no. 15 (2022): 9186–201. http://dx.doi.org/10.1039/d2ra00232a.

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Environmental contaminants constitute an ecological and health hazard, which requires green sensing. The RAFT-MIP approach for tailor-made selective receptors enhances them via binding affinities for use in environmental contaminant sensors.

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Krahn, MM, D. G. Burrows, J. E. Stein, et al. "White whales (Delphinapterus leucas) from three Alaskan stocks: Concentrations and patterns of persistent organochlorine contaminants in blubber." J. Cetacean Res. Manage. 1, no. 3 (1999): 239–50. http://dx.doi.org/10.47536/jcrm.v1i3.471.

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White whale (De!phinapterus leucas) blubber samples from three of the five different Alaskan stocks, Cook Inlet (n = 20), Eastern Chukchi Sea (n = 19) and Eastern Beaufort Sea (n = 2), were analysed for levels and patterns of chemical contaminants. Blubber from these whales contained LPCBs, LDDTs, Lchlordanes, HCB, dieldrin, mirex, Ltoxaphene and LHCH, generally in concentration ranges similar to those found in white whales from the Canadian Arctic but lower than those in white whales from the highly contaminated St Lawrence River. Males from the Cook Inlet and Eastern Chukchi Sea stocks had h

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Mandeep Kumar, Beenakshi Thakur, Dr. Puneet, Gurinder Singh, and Harpreet Kaur. "Investigating Plastic-Degrading Potential of Environmental Microbes in Polluted Ecosystems." International Journal of Scientific Research in Science and Technology 12, no. 3 (2025): 1309–17. https://doi.org/10.32628/ijsrst25123138.

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Polyethylene's extreme non-biodegradability has made it a major environmental contaminant, and numerous researchers are working to find a means to break it down. Here, we've attempted to use soil bacteria that were isolated from plastic disposal sites to break down plastic in this research. Polystyrene (PS), Polyethylene terephthalate (PET), High-density polyethylene (HDPE), and Low-density polyethylene (LDPE) are common plastic polymers that provide serious environmental problems because they don't break down naturally. Soil samples from plastic disposal sites in Mohali, Chandigarh, and Hoshi

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Nor Azirah Mohd Fohimi, Koay Mei Hyie, Salina Budin, Normariah Che Maideen, Nazri Kamsah, and Haslinda Mohamed Kamar. "An Experimental Study of Indoor Air Pollution in New Office Building." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 94, no. 1 (2022): 120–28. http://dx.doi.org/10.37934/arfmts.94.1.120128.

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Air pollution is a major environmental risk to health. The new building normally has a facing problem with indoor air pollutant. New construction materials and furniture will contribute higher contaminants compared to old materials. The effect of indoor air pollutants can result in human health problems, discomfort and reduces their productivity. The purpose of this present work is to experimental study the indoor air pollution status regarding carbon dioxide, carbon monoxide, volatile organic compounds, and formaldehyde concentration in an administration office at the new building faculty of

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Schaerer, Laura G., Sulihat Aloba, Emily Wood, et al. "Enriched microbial consortia from natural environments reveal core groups of microbial taxa able to degrade terephthalate and terphthalamide." PLOS ONE 19, no. 12 (2024): e0315432. https://doi.org/10.1371/journal.pone.0315432.

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Millions of tons of polyethylene terephthalate (PET) are produced each year, however only ~30% of PET is currently recycled in the United States. Improvement of PET recycling and upcycling practices is an area of ongoing research. One method for PET upcycling is chemical depolymerization (through hydrolysis or aminolysis) into aromatic monomers and subsequent biodegradation. Hydrolysis depolymerizes PET into terephthalate, while aminolysis yields terephthalamide. Aminolysis, which is catalyzed with strong bases, yields products with high osmolality, which is inhibitory to optimal microbial gro

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Moravec, Rich, Jun Wang, Jim Hartnett, Mei Cong, and Jamison Grailer. "Abstract 5479: Development of novel luminescent assays for sensitive and specific quantitation of double-stranded RNA in mRNA vaccines." Cancer Research 85, no. 8_Supplement_1 (2025): 5479. https://doi.org/10.1158/1538-7445.am2025-5479.

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Abstract Personalized mRNA vaccines, designed with patient-specific tumor mutations, are now advancing in clinical trials and showing promising results. Additionally, the delivery of therapeutic proteins (e.g., antibodies) encoded by mRNA is under active development. The large-scale production of mRNA is through the process of in vitro transcription (IVT). A significant byproduct and contaminant of IVT is double-stranded RNA (dsRNA), which is highly immunogenic. dsRNA can trigger inflammation, induce cell death, and inhibit protein translation. Therefore, accurate quantification of dsRNA is es

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Gao, Yanan, Peng Guo, Zetian Zhang, Minghui Li, and Feng Gao. "Migration of the Industrial Wastewater in Fractured Rock Masses Based on the Thermal-Hydraulic-Mechanical Coupled Model." Geofluids 2021 (October 16, 2021): 1–13. http://dx.doi.org/10.1155/2021/5473719.

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Industrial wastewater may have a long-time effect on the environment and human life as it goes underground and causes serious pollution continuously. To have a well understanding of the migration of such wastewater is a basic task for industrial wastewater treatment as well as industrial design. To study the migration mechanism of industrial wastewater in rock formations, the governing equations such as mechanics, seepage, heat, and mass transfer are reviewed, referenced, and proposed. The thermal (T)-hydraulic (H)-mechanical (M) coupled model of the multimedia of matrix-fault and matrix-fract

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Tatsukawa, R. "Contamination of Chlorinated Organic Substances in the Ocean Ecosystem." Water Science and Technology 25, no. 11 (1992): 1–8. http://dx.doi.org/10.2166/wst.1992.0266.

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Persistent organochlorines such as PCBs, DDTs and HCHs are ubiquitous contaminants found in seas and oceans worldwide. They are transferred from terrestrial contaminant sources to open ocean through atmosphere and ultimately deposit into the oceanic waters. The tropical regions are likely to contribute greatly to the global contamination of some organochlorines in recent years. The contaminants in water phase are taken into ecosystems following the prey-predator relationship in the food-chain. In this context, cetaceans like dolphins, porpoises and whales are recognized as one of the animal gr

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Meyer, A. M., N. Meijer, E. F. Hoek-van den Hil, and H. J. van der Fels-Klerx. "Chemical food safety hazards of insects reared for food and feed." Journal of Insects as Food and Feed 7, no. 5 (2021): 823–31. http://dx.doi.org/10.3920/jiff2020.0085.

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Insects are a promising future source of sustainable proteins within a circular economy. Proving the safety of insects for food and feed is necessary prior to supplying them to the market. This literature review provides a state-of-the-art overview of the chemical food safety hazards for insects reared for food and feed, focusing mainly on transfer of contaminants from the substrate. Contaminants covered are: heavy metals, dioxins and polychlorinated biphenyls, polyaromatic hydrocarbons, pesticides, veterinary drugs, mycotoxins, and plant toxins. The twelve insect species reported as having th

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Yang, Chun-Bai-Xue, Shi-Jin Feng, and Qi-Teng Zheng. "Influence of extraction and injection conditions on the performance of thermal-enhanced soil vapor extraction." IOP Conference Series: Earth and Environmental Science 1335, no. 1 (2024): 012026. http://dx.doi.org/10.1088/1755-1315/1335/1/012026.

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Abstract Thermal-enhanced soil vapor extraction (T-SVE) is an in-situ remedial technique that can address the limitations of contaminant mass transfer and soil permeability. The relative humidity of the injected air, heating temperature of the thermal well, extraction pressure, and extraction mode are important design parameters of a T-SVE system that determine the temporal and spatial distributions of soil temperature and removal rate. Using a thermal–hydraulic–chemical coupled model with the interphase mass transfer of contaminants and water evaporation/condensation, this study investigated

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Davranche, Melanie, Alexandre Gélabert, and Marc F. Benedetti. "Electron Transfer Drives Metal Cycling in the Critical Zone." Elements 16, no. 3 (2020): 185–90. http://dx.doi.org/10.2138/gselements.16.3.185.

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Electron transfer in the critical zone is driven by biotic and abiotic mechanisms and controls the fate of inorganic and organic contaminants, whether redox-sensitive or not. In these environments, Fe- and Mn-bearing minerals, as well as organic matter, are key compounds. They interact with each other and constitute important electron shuttles. As a result, not only their solubility but also their structure controls the mobility of many essential and toxic elements. In addition, microorganisms that form hot spots and are widespread in environmental systems are also primordial players in electr

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Saadun, Mohd Noor Asril, C. S. Nor Azwadi, M. N. Hazwani, Mohamad Shukri Zakaria, Muhammad Zaidan Abdul Manaf, and Mohd Hafidzal Mohd Hanafi. "Numerical Analysis on the Effects of Cavity Geometry with Heat towards Contaminant Removal." Applied Mechanics and Materials 393 (September 2013): 851–56. http://dx.doi.org/10.4028/www.scientific.net/amm.393.851.

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Contaminants are recently discovered at the joint of large piping system and causing defect to industrial product. A computational analysis can be used as a solution of the hydrodynamic contaminant removal without any modification needed. In this paper, the effect of heat is introduced to analyze the heat transfer and flow field in a channel with cavity heated at the bottom sides coupled with different shape of cavity. The cavity shape used comes with three shapes i.e. square, triangle and semicircle. The process of fluid dynamic in a cavity is modeled via numerical solution of the NavierStoke

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Texier, Jérôme, Julio Gonçalvès, and Agnès Rivière. "Numerical Assessment of Groundwater Flowpaths below a Streambed in Alluvial Plains Impacted by a Pumping Field." Water 14, no. 7 (2022): 1100. http://dx.doi.org/10.3390/w14071100.

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The quality of the water from a riverbank well field is the result of the mixing ratios between the surface water and the local and regional groundwater. The mixing ratio is controlled by the complex processes involved in the surface water–groundwater interactions. In addition, the drawdown of the groundwater level greatly determines the water head differences between the river water and groundwater, as well as the field flowpath inside the alluvial plain, which subsequently impacts the water origin in the well. In common view, groundwater flows from both sides of the valley towards the river,

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Ackerley, D. F., C. F. Gonzalez, C. H. Park, R. Blake, M. Keyhan, and A. Matin. "Chromate-Reducing Properties of Soluble Flavoproteins from Pseudomonas putida and Escherichia coli." Applied and Environmental Microbiology 70, no. 2 (2004): 873–82. http://dx.doi.org/10.1128/aem.70.2.873-882.2004.

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ABSTRACT Cr(VI) (chromate) is a toxic, soluble environmental contaminant. Bacteria can reduce chromate to the insoluble and less toxic Cr(III), and thus chromate bioremediation is of interest. Genetic and protein engineering of suitable enzymes can improve bacterial bioremediation. Many bacterial enzymes catalyze one-electron reduction of chromate, generating Cr(V), which redox cycles, generating excessive reactive oxygen species (ROS). Such enzymes are not appropriate for bioremediation, as they harm the bacteria and their primary end product is not Cr(III). In this work, the chromate reducta

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FENTON, O., M. G. HEALY, F. BRENNAN, et al. "Permeable reactive interceptors: blocking diffuse nutrient and greenhouse gases losses in key areas of the farming landscape." Journal of Agricultural Science 152, S1 (2014): 71–81. http://dx.doi.org/10.1017/s0021859613000944.

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SUMMARYEngineered remediation technologies such as denitrifying bioreactors target single contaminants along a nutrient transfer continuum. However, mixed contaminant discharges to a water body are more common from agricultural systems. Indeed, evidence presented herein indicates that pollution swapping within denitrifying bioreactor systems adds to such deleterious discharges. The present paper proposes a more holistic approach to contaminant remediation on farms, moving from the use of ‘denitrifying bioreactors’ to the concept of a ‘permeable reactive interceptor’ (PRI). Besides management c

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Haas, Bettina S., and Reimer Herrmann. "Transport of chlorinated hydrocarbons between sewage and sewer atmosphere." Water Science and Technology 34, no. 3-4 (1996): 557–64. http://dx.doi.org/10.2166/wst.1996.0476.

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Sewage containing volatile contaminants is a potential VOC-source in cities. Thus we tried to evaluate volatilization out of the sewerage system by measurements of contaminants in sewer gas and sewage. Our results from a medium sized town with little industry showed that sewer gas is mainly contaminated with alkanes, small aromatic compounds and chlorinated hydrocarbons. For three chlorinated hydrocarbons (chloroform, trichloroethene, tetrachloroethene) we determined mass transfer coefficients out of sewage and used these data to estimate mass fluxes from sewage and emissions out of the sewera

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Wolkers, Hans, Peter J. Corkeron, Sofie M. Van Parijs, Tiu Similä, and Bert van Bavel. "ACCUMULATION AND TRANSFER OF CONTAMINANTS IN KILLER WHALES (ORCINUS ORCA) FROM NORWAY: INDICATIONS FOR CONTAMINANT METABOLISM." Environmental Toxicology and Chemistry 26, no. 8 (2007): 1582. http://dx.doi.org/10.1897/06-455r1.1.

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RICARD, MICHELLE, GILLES DORRIS, SYLVAIN GENDRON, NATALIE PAGÉ, DENISE FILION, and CARLOS CASTRO. "A new online image analyzer for macrocontaminants in recycled pulps." February 2012 11, no. 2 (2012): 19–28. http://dx.doi.org/10.32964/tj11.2.19.

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A new image analysis-based instrument has been developed for measurement of low density and high density macrocontaminants from recycled pulp or whitewater. The unit is coupled to a pulp classifier that isolates the contaminants from pulp and concentrates them before their transfer to a specialized chamber that further separates the contaminants based on their relative density to water. The low density contaminants float on the water surface, whereas the high density macrocontaminants sink onto the settling plate, where images of both contaminant types are then captured and analysed. Through i

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Rech, Aline, Elisa Pacheco, Jakcemara Caprario, Julio Cesar Rech, and Alexandra Rodrigues Finotti. "Low-Impact Development (LID) in Coastal Watersheds: Infiltration Swale Pollutant Transfer in Transitional Tropical/Subtropical Climates." Water 14, no. 2 (2022): 238. http://dx.doi.org/10.3390/w14020238.

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The control of runoff pollution is one of the advantages of low-impact development (LID) or sustainable drainage systems (SUDs), such as infiltration swales. Coastal areas may have characteristics that make the implementation of drainage systems difficult, such as sandy soils, shallow aquifers and flat terrains. The presence of contaminants was investigated through sampling and analysis of runoff, soil, and groundwater from a coastal region served by an infiltration swale located in southern Brazil. The swale proved to be very efficient in controlling the site’s urban drainage volumes even und

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Obeidy, Ahmed, and M. A. L. Smith. "ESTABLISHING CULTURES FROM MATURE PECAN EMBRYO EXPLANTS ON MEDIA WITH LOW WATER AVAILABILITY." HortScience 25, no. 9 (1990): 1149F—1149. http://dx.doi.org/10.21273/hortsci.25.9.1149.

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Endophytic fungi associated with mature pecan nuts (cultivars `Smart', `Desirable' and `Owens') prevented successful, contaminant-free. in vitro culture of embryo explants, even after rigorous surface disinfestation of the nuts and careful aseptic shelling. Disinfestation with sodium hypochlorite after removing the shells was also unsuccessful, because even dilute concentrations which were ineffective against the fungal contaminants destroyed embryo viability. An alternative disinfestation technique is required to establish in vitro cultures from mature pecan explants. Explanting media with lo

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Obeidy, Ahmed, and M. A. L. Smith. "ESTABLISHING CULTURES FROM MATURE PECAN EMBRYO EXPLANTS ON MEDIA WITH LOW WATER AVAILABILITY." HortScience 25, no. 9 (1990): 1149f—1149. http://dx.doi.org/10.21273/hortsci.25.9.1149f.

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Endophytic fungi associated with mature pecan nuts (cultivars `Smart', `Desirable' and `Owens') prevented successful, contaminant-free. in vitro culture of embryo explants, even after rigorous surface disinfestation of the nuts and careful aseptic shelling. Disinfestation with sodium hypochlorite after removing the shells was also unsuccessful, because even dilute concentrations which were ineffective against the fungal contaminants destroyed embryo viability. An alternative disinfestation technique is required to establish in vitro cultures from mature pecan explants. Explanting media with lo

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Moreira, Juliana Botelho, Thaisa Duarte Santos, Munise Zaparoli, Ana Claudia Araujo de Almeida, Jorge Alberto Vieira Costa, and Michele Greque de Morais. "An Overview of Nanofiltration and Nanoadsorption Technologies to Emerging Pollutants Treatment." Applied Sciences 12, no. 16 (2022): 8352. http://dx.doi.org/10.3390/app12168352.

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The presence of emerging contaminants in water resources has been a global concern due to their environmental impact and effects on human and animal health. These compounds include pharmaceuticals and personal care products, pesticides, fire retardants, hormones, and plasticizers, among others. These contaminants are not completely removed during water and wastewater conventional treatment. Thus, alternative processes are necessary to face this issue. In this context, nanotechnology represents a promising strategy for the remediation of emerging contaminants. Nanostructured materials have high

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Sturla Lompré, Julieta, Lucia De Marchi, João Pinto, et al. "Effects of Carbon Nanoparticles and Chromium Combined Exposure in Native (Ruditapes decussatus) and Invasive (Ruditapes philippinarum) Clams." Nanomaterials 13, no. 4 (2023): 690. http://dx.doi.org/10.3390/nano13040690.

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Studies have described the occurrence of nanoparticles (NPs) in aquatic ecosystems, with particular attention to the widely commercialized carbon nanotubes (CNTs). Their presence in the environment raises concerns, especially regarding their toxicity when co-occurring with other pollutants such as metals. In the present study, changes to the metabolic capacity, oxidative, and neurologic status were evaluated in the presence of carboxylated multi-walled CNTs and chromium (Cr(III)) using two of the most ecologically and economically relevant filter feeder organisms: the clam species Ruditapes de

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Krahn, Margaret M., Gina M. Ylitalo, Douglas G. Burrows, et al. "Organochlorine contaminant concentrations and lipid profiles in eastern North Pacific gray whales (Eschrichtius robustus)." J. Cetacean Res. Manage. 3, no. 1 (2023): 19–29. http://dx.doi.org/10.47536/jcrm.v3i1.896.

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Organochlorine (OC) contaminant concentrations in tissues and lipid profiles in blubber are summarised for 101 gray whales (Eschrichtius robustus) from the eastern North Pacific stock. Samples were obtained from presumably healthy gray whales during a 1994 subsistence hunt in the Russian Arctic (n = 17) and also from biopsy sampling of live animals from the Washington coast (n = 38). In addition, tissues were collected from two groups of animals (1988-1991, n = 22; and 1999, n = 24) that stranded along the west coast of the USA. These whales represent a diverse group of animals with respect to

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Ding, J. Y., and S. C. Wu. "Laboratory Studies of the Effects of Dissolved Organic Material on the Adsorption of Organochlorine Pesticides by Sediments and Transport in Rivers." Water Science and Technology 28, no. 8-9 (1993): 199–208. http://dx.doi.org/10.2166/wst.1993.0619.

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In this study experiments simulating sediment/water system were carried on with sediments spiked with aldrin, heptachlor epoxide and p,p'-DDE. It was expected that these hydrophobic contaminants would be released to the overlying water column from sediment bed with molecular diffusion and co-diffusion with dissolved organic matter (DOM) as well. A three-phase-transport model including aqueous, solid and mobile adsorptive phases was developed and used to describe the behavior of these contaminants and to explain the results of the experiments. Sensitivity analyses show that observable effects o

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Nassar, Ibrahim M., Heba Nassar, Mohyeddin Assali, et al. "Electro-Mineralization of Aqueous Phenazopyridine Using Platinum Nanoparticles Deposited onto Multiwalled Carbon Nanotubes." Processes 12, no. 8 (2024): 1625. http://dx.doi.org/10.3390/pr12081625.

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Water may easily become polluted by pharmaceutical wastes, such as phenazopyridine hydrochloride. The pollutant can be removed by electrochemical oxidation in the form of minerals. A novel electrode has been developed for this purpose. Pt nanoparticles (PtNPs) are electrodeposited onto multiwalled carbon nanotubes supported onto fluorine-doped tin oxide (FTO/Glass). The resulting PtNP@MWCNT-FTO-E electrode is characterized by X-ray diffraction, atomic force microscopy, scanning electron microscopy, electron diffraction spectroscopy and X-ray photoelectron spectroscopy. The electrode exhibits h

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Brandely, Maxime, Samuel Coussy, Denise Blanc-Biscarat, Remy Gourdon, and Gaëtan Blanck. "Chemical Stabilization Used to Reduce Geogenic Selenium, Molybdenum, Sulfates and Fluorides Mobility in Rocks and Soils from the Parisian Basin." Environments 9, no. 7 (2022): 78. http://dx.doi.org/10.3390/environments9070078.

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Rocks and soils excavated from civil works frequently present high concentrations of naturally occurring leachable (oxy-)anions. This situation raises concerns regarding the potential transfer of contaminants to groundwater in a storage scenario. This study was carried out to give practical insights on the ability of various stabilizing agents to reduce molybdenum (Mo), selenium (Se), fluorides and sulfates mobility in four types of naturally contaminated excavated materials. Based on standardized leaching tests results, Mo and Se were effectively immobilized after zero valent iron or iron sal

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McKone, Thomas E., and Randy L. Maddalena. "Soil Contamination and Human Exposure: A Comprehensive Assessment Framework." International Journal of Toxicology 16, no. 4-5 (1997): 319–37. http://dx.doi.org/10.1080/109158197226991.

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Soil is the thin outer zone of the earth's crust that supports rooted plants and is the product of climate and living organisms acting on rock. Throughout the world, soils are contaminated to some extent by local, regional, and global pollution sources of both natural and human origin. Sources of soil contamination are identified and discussed. With the possible exception of agricultural applications of pesticides and fertilizers, most contaminant releases to soil are not easily quantified and, as a result, remain highly uncertain. In establishing a comprehensive framework for human exposure t

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Zhang, Peng Wei, Qing Bo Wen, and Li Ming Hu. "Numerical Simulation of Contaminant Dynamic Transfer in Dual-Domain Model." Advanced Materials Research 864-867 (December 2013): 1379–85. http://dx.doi.org/10.4028/www.scientific.net/amr.864-867.1379.

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Preferential flowpaths (PFP) causes highly heterogeneity of soil. In this study a preferential flowpaths generalized model has been established, based on dual-domain model (DDM) which reflects contaminant transport and the dynamic transfer between mobile and immobile domains, quantitatively analyses the contaminant mass transfer in pore scale at three different conditions. Besides, define relative hydraulic conductivity reflect the impact of PFP physical parameters, results show that it can affect the contaminant transport form and the distribution of contaminant concentration.

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Hsu, Shu-Chen, Ting-Khai Kong, Chung-Yu Chen, and Hsiu-Ling Chen. "Plasma-Activated Water Affects the Antioxidant Contents in Water Spinach." Applied Sciences 13, no. 5 (2023): 3341. http://dx.doi.org/10.3390/app13053341.

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Several studies suggested that plasma-activated water (PAW) increases crop yields and confronts drought. This study determined the total phenolic (TP) and total flavonoid (TF) contents of water spinach to elucidate whether PAW induced changes in the antioxidant potential of water spinach planted in soil with and without metal contaminants. PAW was selected as the irrigation water for pot experiments. Results showed that PAW increased the TP of water spinach planted in soil without any contaminants and, to some extent, in Cd-added soils but decreased the TP of those planted in Pb-added soil. PA

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Yao, Yu, Peifang Wang, and Chao Wang. "The Influence on Contaminant Bioavailability and Microbial Abundance of Lake Hongze by the South-to-North Water Diversion Project." International Journal of Environmental Research and Public Health 16, no. 17 (2019): 3068. http://dx.doi.org/10.3390/ijerph16173068.

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The world famous South-to-North Water Transfer Project was built to alleviate serious water shortages in northern China. Considering that lake Hongze is an important freshwater lake in this region, analyzing the influence of water diversion on typical contaminant bioavailability and microbial abundance could aid in achieving a good overall understanding of hydrodynamic variation. Accordingly, in situ high-resolution measurements of diffusive gradients in thin films (DGT) and next-generation high-throughput sequencing were combined in order to survey Lake Hongze and determine the relationship b

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Wolfenden, A., and MI Ismail. "Basic Principles of Contaminant Transfer Modeling." Journal of Testing and Evaluation 15, no. 5 (1987): 274. http://dx.doi.org/10.1520/jte11021j.

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Zhang, J. G., W. C. Zegel, and U. H. Kurzweg. "Enhanced Axial Dispersion in Oscillating Pipe Flow With Different Solute Concentrations at Its Ends." Journal of Fluids Engineering 118, no. 1 (1996): 160–65. http://dx.doi.org/10.1115/1.2817495.

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The problem of the enhanced axial contaminant dispersion by sinusoidal oscillation of fluid in a cylindrical pipe connected to reservoirs filled with contaminated groundwater involving different concentrations of species has been examined. It is found that the axial contaminant transfer along the pipe can be greatly enhanced by the fluid oscillation, which leads to a rapid removal of contaminants from groundwater and develops a relative low concentration region in the neighborhood of the subsurface collector. The enhanced dispersion coefficients, Deff, of several heavy metal ions and organic c

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