Thematische Bibliographien / Biodeposition

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Auswahl der wissenschaftlichen Literatur zum Thema „Biodeposition“

Autor: Grafiati

Veröffentlicht am 23. Juni 2021

Zuletzt aktualisiert am 1. Februar 2022

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Zeitschriftenartikel zum Thema "Biodeposition"

Li, Pei Hao, Wen Jun Qu und Bo Jin. „Modelling of Carbon Dioxide Diffusion into Surface-Biodeposited Concrete“. Advanced Materials Research 446-449 (Januar 2012): 3365–68. http://dx.doi.org/10.4028/www.scientific.net/amr.446-449.3365.

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To gain an insight into the protective mechanism of surface biodeposition, a theoretical study of carbon dioxide diffusion through surface-biodeposited concrete is required. The present paper proposes a physical model for surface biodeposition and the concept of water-percolated porosity, and develops a theoretical model to predict carbonation of surface-biodeposited concrete structures. The model describes movement and retention of heat, moisture and carbon dioxide by means of balance equations and diffusion laws. The influences of biodeposition and substrate properties on carbon dioxide diffusion are studied by a finite difference model. Results indicate that carbon dioxide diffusion is controlled by both the biodeposition and the substrate. Biodeposition can significantly reduce carbon dioxide concentration at the concrete surface, but this interfacial concentration increases with time.

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Li, Pei Hao, und Bo Jin. „Modelling of Chloride Diffusion into Surface-Biodeposited Concrete“. Applied Mechanics and Materials 164 (April 2012): 107–10. http://dx.doi.org/10.4028/www.scientific.net/amm.164.107.

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Chloride diffusuion is regarded as the dominant chloride transport process in concrete and the main cause of the corrosion of steel in concrete structures exposed to chloride-rich environments. Surface biodeposition can be applied to both new and existing concrete structures to restrain this deterioration. To gain comprehensive overview to the protective mechanism of surface biodeposition, a theoretical study of chloride diffusion through surface-biodeposited concrete is required. This paper proposes a physical model for surface biodeposited concrete, and develops a theoretical model to predict chloride diffusion of surface-biodeposited concrete structures. The model describes movement and retention of moisture and chloride by means of balance equations and diffusion laws. The influences of biodeposition and substrate properties on chloride diffusion are studied by a finite difference model. Results indicate that chloride diffusion is controlled by both the biodeposition and the substrate.

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Dobson, Evan P., und Gerald L. Mackie. „Increased deposition of organic matter, polychlorinated biphenyls, and cadmium by zebra mussels (Dreissena polymorpha) in western Lake Erie“. Canadian Journal of Fisheries and Aquatic Sciences 55, Nr. 5 (01.05.1998): 1131–39. http://dx.doi.org/10.1139/f97-321.

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Biodeposition of organic matter, polychlorinated biphenyls (PCBs), and cadmium (Cd) by zebra mussels (Dreissena polymorpha) was investigated at five stations in the western basin of Lake Erie during the summer of 1992. Biodeposition rates at the five stations were determined by using sediment traps and converted to per unit area values to facilitate comparisons with natural sedimentation rates. Biodeposition of suspended material by zebra mussels was up to 8 times greater than sedimentation in the traps. Concentrations of organic matter, PCBs, and Cd were determined for the biodeposits and the sedimented material. There were no significant differences in concentration of organic matter, PCBs, or Cd between the two types of material. Biodeposition rates per unit area of organic matter, PCBs, and Cd were 8-10 times greater than corresponding values for natural sedimentation; therefore, the natural sedimentation processes of these factors appear to be greatly accelerated in the presence of zebra mussels. Results support the possibility that zebra mussels are altering contaminant movement in western Lake Erie, as well as clarifying the water column by removing suspended material.

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Klerks, P. L., P. C. Fraleigh und J. E. Lawniczak. „Effects of the exotic zebra mussel (Dreissena polymorpha) on metal cycling in Lake Erie“. Canadian Journal of Fisheries and Aquatic Sciences 54, Nr. 7 (01.07.1997): 1630–38. http://dx.doi.org/10.1139/f97-071.

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This research demonstrated the impact of high densities of the zebra mussel (Dreissena polymorpha) on the cycling of copper, nickel, and zinc in a lake environment. Experiments with mussels on sedimentation traps in western Lake Erie and with mussels in flow-through tanks receiving Lake Erie water showed that zebra mussels remove metals from the water column, incorporate metals in their tissues, and deposit metals on the lake bottom. Removal of metals from the water column was estimated at 10-17% · day-1 of the amounts present. This material was largely deposited on the lake bottom; zebra mussels more than doubled the rate at which metals were being added to the lake bottom. Metal biodeposition rates were extremely high (e.g., 50 mg Zn · m-2 · day-1) in high-turbidity areas with elevated metal levels. Two factors contributed to metal biodeposition by zebra mussels. First, their production of feces and pseudofeces increased the rate at which suspended matter was being added to the sediment (accounting for 92% of the increased metal biodeposition). Second, the material coming out of suspension had higher metal concentrations when zebra mussels were present (constituting 8% of the increased biodeposition).

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Graf, Gerhard, und Rutger Rosenberg. „Bioresuspension and biodeposition: a review“. Journal of Marine Systems 11, Nr. 3-4 (Juni 1997): 269–78. http://dx.doi.org/10.1016/s0924-7963(96)00126-1.

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De Muynck, Willem, Stijn Leuridan, Denis Van Loo, Kim Verbeken, Veerle Cnudde, Nele De Belie und Willy Verstraete. „Influence of Pore Structure on the Effectiveness of a Biogenic Carbonate Surface Treatment for Limestone Conservation“. Applied and Environmental Microbiology 77, Nr. 19 (05.08.2011): 6808–20. http://dx.doi.org/10.1128/aem.00219-11.

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ABSTRACTA ureolytic biodeposition treatment was applied to five types of limestone in order to investigate the effect of pore structure on the protective performance of a biogenic carbonate surface treatment. Protective performance was assessed by means of transport and degradation processes, and the penetration depth of the treatment was visualized by microtomography. Pore size governs bacterial adsorption and hence the location and amount of carbonate precipitated. This study indicated that in macroporous stone, biogenic carbonate formation occurred to a larger extent and at greater depths than in microporous stone. As a consequence, the biodeposition treatment exhibited the greatest protective performance on macroporous stone. While precipitation was limited to the outer surface of microporous stone, biogenic carbonate formation occurred at depths of greater than 2 mm for Savonnières and Euville. For Savonnières, the presence of biogenic carbonate resulted in a 20-fold decreased rate of water absorption, which resulted in increased resistance to sodium sulfate attack and to freezing and thawing. While untreated samples were completely degraded after 15 cycles of salt attack, no damage was observed in biodeposition-treated Savonnières. From this study, it is clear that biodeposition is very effective and more feasible for macroporous stones than for microporous stones.

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Li, Pei Hao, und Wen Jun Qu. „Microbial Carbonate Mineralization as an Improvement Method for Durability of Concrete Structures“. Advanced Materials Research 365 (Oktober 2011): 280–86. http://dx.doi.org/10.4028/www.scientific.net/amr.365.280.

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Biodeposition treatment had been proposed as alternative techniques for improvement in the durability of concrete structures. Laboratory experiments were conducted by bacterially mediated carbonate precipitation on the surface and subsurface of specimens of concrete. Some properties of specimens and crystal, such as the crystal phase, morphology and growth of the crystal deposited on specimens, water penetration, the resistance towards carbonation of concrete and so on, were analyzed by XRD, SEM, water absorptivity test and concrete accelerated carbonation test. Some efficiencies of biodeposition treatment for were investigated by experiment. Results show that the mineral crystal deposits uniformly on the surface and subsurface of specimens, phases of crystal are calcite and vaterite. Biodeposition effectively reduces capillary water uptake and leading to carbonation rate constant decreased by 25~40%. Bacterially mediated carbonate mineralization can be an ecological and novel alternative for improvement in the durability of concrete structures.

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Grant, Jon, Peter Cranford, Barry Hargrave, Michel Carreau, Bryan Schofield, Shelley Armsworthy, Victoria Burdett-Coutts und Diego Ibarra. „A model of aquaculture biodeposition for multiple estuaries and field validation at blue mussel (Mytilus edulis) culture sites in eastern Canada“. Canadian Journal of Fisheries and Aquatic Sciences 62, Nr. 6 (01.06.2005): 1271–85. http://dx.doi.org/10.1139/f05-033.

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Development of mariculture in Canadian waters has outpaced the ability of regulators to adequately assess environmental impacts and coexistence with other resource users. In eastern Canada, suspended longline culture of blue mussels (Mytilus edulis) leads to depletion of seston and subsequent biodeposition of feces and pseudofeces. Based on the need to evaluate aquaculture effects over multiple farms, a model was developed to compare the rate of mussel egestion with the scale of culture and tidal flushing of particulate waste from estuarine waters. Egestion was calculated using a bioenergetic submodel, and tidal flushing was determined with a tidal prism method. A short-term field program of particle sensing and sediment trapping was undertaken in Tracadie Bay and Savage Harbour (Prince Edward Island) to examine model assumptions and for validation. A finite element model was used to verify tidal prism calculations. Expressing model output as sedimentation rate, predicted biodeposition in Tracadie Bay was less than that estimated from field results but within the range of estuary-wide variation. In Savage Harbour, the egestion model overestimated biodeposition, likely because culture density on leased areas was sparse. A ranking of sites based on susceptibility to culture impacts was devised for multiple culture sites.

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MATSUI, Masahito, Takao NOGUCHI, Kenichi MURAI und Yuichi NAKAMURA. „Biodeposition of Copper Crystals by Marine Microorganisms“. Proceedings of Conference of Tokai Branch 2017.66 (2017): 801. http://dx.doi.org/10.1299/jsmetokai.2017.66.801.

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Jaramillo, E., C. Bertran und A. Bravo. „Mussel biodeposition in an estuary in southern Chile“. Marine Ecology Progress Series 82 (1992): 85–94. http://dx.doi.org/10.3354/meps082085.

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Dissertationen zum Thema "Biodeposition"

Holyoke, Rebecca R. „Biodeposition and biogeochemical processes in shallow, mesohaline sediments of Chesapeake Bay“. College Park, Md. : University of Maryland, 2008. http://hdl.handle.net/1903/8025.

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Thesis (Ph. D.) -- University of Maryland, College Park, 2008.
Thesis research directed by: Marine, Estuarine, Environmental Sciences Graduate Program. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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Onken, Kai Sven. „Effects of native freshwater mussels and leaf debris on benthic macroinvertebrate abundance and diversity : A field experiment with Margaritifera margaritifera in Vasslabäcken, Örebro county“. Thesis, Karlstads universitet, Institutionen för miljö- och livsvetenskaper (from 2013), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-84485.

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Organisms that are part of complex ecosystems interact not only with other organisms but also with their environment, affecting ecosystem functions. In aquatic ecosystems filter feeders affect ecosystem functioning by transferring energy and nutrients from the water to the benthos. The filter-feeding unionoid mussels can have strong effects on nutrient release and biodeposition in streams, affecting primary and secondary production. In a 90-day field cage experiment during winter 2019-2020, effects of the critically endangered freshwater pearl mussel (Margaritifera margaritifera) and leaf litter on benthic macroinvertebrate communities were tested using a factorial study design. Benthic macroinvertebrates were collected from the cages and examined in the lab. No significant effects of mussels, leaf litter or their interaction on the abundance and diversity of invertebrates were found for most groups. The abundance of Simulidae was however lower in cages with mussels compared to cages without mussels. The presence of mussels in streams may therefore affect ecosystem function, here shown as a possible effect on the interspecific competition for food sources between filter feeders.
Organismer i komplexa ekosystem interagerar inte bara med andra organismer utan också med sin miljö, samt påverkar ekosystemfunktioner. I akvatiska ekosystem påverkar filtrerare ekosystemfunktioner genom att överföra energi och näringsämnen från vattnet till det bentiska samhället. De filtrerande unionoida musslorna kan ha stora effekter på närsalter och biodeposition i vattendrag, vilket påverkar primär- och sekundärproduktionen. I ett 90-dagars fältbursförsök under vintern 2019-2020 testades effekterna av den starkt hotade sötvattenspärlemusslan (Margaritifera margaritifera) och löv på bentiska samhällen. Makroevertebrater provtogs i burarna och undersöktes på lab. Det fanns inga signifikanta effekter av musslor, löv eller deras interaktion på makroevertebraters tätheter och diversitet för de flesta grupper. Tätheter av Simulidae var dock lägre i burar med musslor jämfört med burar utan musslor. Förekomsten av musslor i vattendrag kan därför påverka ekosystemets funktion, här visat som en möjlig effekt på mellanartskonkurrens mellan filtrerare.

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Stamm, Monika. „Räumliche und zeitliche Abundanzmuster ausgewählter Arten der benthischen Makrofauna im ostfriesischen Wattenmeer unter dem Einfluß von Biodepositen einer Miesmuschelbank /“. 2000. http://www.gbv.de/dms/bs/toc/329998722.pdf.

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Bücher zum Thema "Biodeposition"

Dobson, Evan Peter. Biodeposition and uptake of polychlorinated biphenyls and cadmium by the zebra mussel, Dreissena polymorpha: Final report. [Toronto]: Ministry of Environment and Energy, 1996.

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Buchteile zum Thema "Biodeposition"

„Crack repair in concrete using biodeposition“. In Concrete Repair, Rehabilitation and Retrofitting II, 309–10. CRC Press, 2008. http://dx.doi.org/10.1201/9781439828403-119.

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De Belie, N., und W. De Muynck. „Crack repair in concrete using biodeposition“. In Concrete Repair, Rehabilitation and Retrofitting II, 291–92. CRC Press, 2008. http://dx.doi.org/10.1201/9781439828403.ch107.

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Konferenzberichte zum Thema "Biodeposition"

Orav-Kotta, Helen, Jonne Kotta, Kaire Kaljurand und Ilmar Kotta. „Seasonal Changes in Biodeposition and Grazing Potential of the Suspension Feeding Bivalve Mytilus trossulus“. In 2010 International Conference on Biosciences. IEEE, 2010. http://dx.doi.org/10.1109/biosciencesworld.2010.26.

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