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Gotowe bibliografie tematyczne / Competitive sorption and desorption / Rozprawy doktorskie

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Rozprawy doktorskie na temat „Competitive sorption and desorption”

Autor: Grafiati

Data publikacji: 25 stycznia 2025

Data aktualizacji: 31 lipca 2025

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1

Gao, Chan. "Devenir des substances per et poly-fluoroalkylées (PFAS) dans les estuaires : focus sur les interactions avec les sédiments en suspension." Electronic Thesis or Diss., Bordeaux, 2024. http://www.theses.fr/2024BORD0409.

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Les substances per et poly-fluoroalkylées (PFAS) constituent un vaste groupe hétérogène de micropolluants émergents. Du fait de leur structure physico-chimique très stable, les PFAS sont persistantes et largement répandues dans l'environnement et posent de nombreux problèmes environnementaux. Ces dernières années, le devenir des PFAS a fait l'objet d'une attention croissante. Dans le cycle des PFAS, l'air, l'eau, le sol et les sédiments sont différents compartiments impliqués. À l'exutoire des grands bassins versants et à l’interface terre-mer, les estuaires sont considérés comme la principale

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Coover, James Brigham. "Phosphorus sorption and desorption in ephemeral gully erosion." Thesis, Kansas State University, 2014. http://hdl.handle.net/2097/17865.

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Master of Science<br>Department of Agronomy<br>Nathan O. Nelson<br>Phosphorus (P) is an essential nutrient in crop production, but P inputs to surface waters have resulted in impairments such as eutrophication and algae blooms. Non-point sources such as agricultural fields are a main contributor of P. Kansas, being a high agricultural dependent state, has frequent fresh water body impairments. Multiple erosion and transport processes contribute to P loss. While P loss from sheet and rill erosion has been studied extensively, P loss from ephemeral gully erosion is largely unknown. The obje

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Uygur, Veli. "Zn sorption/desorption chemistry in calcareous soils from Turkey." Thesis, University of Newcastle Upon Tyne, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388131.

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Whitehead, Thomas William 1951. "Sorption and desorption of volatile alkyl halides in a desert soil." Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/191936.

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A series of twelve laboratory column experiments were conducted to determine equilibrium partitioning coefficients (K ) and kinetic rate coefficients for sorption of four hydrophobic pollutants on a low organic carbon natural soil. K 's for trichloroethene (ICE), tetrachloroethene (PCE), 1,1,1-trichloroethane (TCA), and 1,1,2,2-tetrachloroethane (PCA), were 0.17, 0.44, 0.06, and 0.05, respectively; about as expected based on empirical carbon-based partitioning equations found in the literature. Tailing of the breakthrough curves could be accounted for with a two-site non-equilibrium solute tra

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Garman, Stephanie Michelle. "Desorption Kinetics of Lead from Goethite: Effect of Mixing and Sorption Period." Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/41240.

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In natural systems, the solution concentration and hence, potential bioavailability of trace metals is primarily controlled by adsorption-desorption reactions at the mineral-water interface. While many studies have been conducted to understand the adsorption of trace metals to soil minerals, less is known about long-term adsorption/desorption processes. In this study, we examined the influence of mixing and sorption period on the desorption of lead from goethite. Lead sorption was rapid and essentially complete in 1 h, with no change in the quantity of lead adsorbed over the 6 month sorptio

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6

Mower, Matthew Bywater. "Competitive desorption of carbon tetrachloride + water from mesoporous silica particles." Online access for everyone, 2005. http://www.dissertations.wsu.edu/Thesis/Summer2005/m%5Fmower%5F081205.pdf.

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Mikutta, Christian. "Controls of the phosphate sorption and desorption kinetics of organic matter goethite associations." [S.l.] : [s.n.], 2006. http://deposit.ddb.de/cgi-bin/dokserv?idn=979599083.

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Shi, Zhenqing. "Kinetics of trace metals sorption on and desorption from soils developing predictive models /." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file 3.09 Mb., 309 p, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:3205426.

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Davis, James Hal 1956, and James Hal 1956 Davis. "Sorption and desorption of benzene and para-xylene on an unsaturated desert soil." Thesis, The University of Arizona, 1989. http://hdl.handle.net/10150/291366.

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A series of bench-scale experiments was carried out to determine the rate and efficiency with which benzene and p-xylene, components of gasoline, could be removed from an unsaturated soil by air stripping. Glass columns, 30 cm in length, were packed with soil and wetted to volumetric moisture contents of 10 and 18 percent. Air saturated with one of the volatile organic compounds (VOCs) was used to load the column. Clean air was used to strip the contaminant from the soil. Benzene and p-xylene concentrations in the soil water and air were reduced four orders of magnitude after a few hours (2-8)

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Wang, Guohui. "Sorption, desorption reversibility of polycyclic aromatic hydrocarbons (PAHs) in soils and carbonaceous materials." kostenfrei, 2008. http://d-nb.info/988782308/34.

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Semprini, Elvio, Patrizia Cafarelli, Stefanis Adriana De, and Anthony A. G. Tomlinson. "Competitive sorption of toluene and acetone on H-ZSM5 zeolite." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-194099.

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12

Wang, Chen. "Competitive Sorption and Uptake of Chlorinated Contaminant Mixtures by Plants." OpenSIUC, 2010. https://opensiuc.lib.siu.edu/theses/238.

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Phytoremediation is a green technology that uses plants to treat contaminated soil and groundwater. During the decades, phytoremediation has been successfully applied to remediate chlorinated solvents in a variety of environmental media. Plant sorption and uptake are key processes in the phytoremediation of chlorinated solvents. Most previous research assumed that sorption and uptake to plant roots is linear and noncompetitive, neglecting the competitive effect when co-contaminants are existed. Growing evidence, however, indicates that sorption and uptake by plants are nonlinear and competitiv

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13

Ajmani, Manu. "Sorption of veterinary antibiotics to woodchips." Kansas State University, 2011. http://hdl.handle.net/2097/13169.

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Master of Science<br>Department of Civil Engineering<br>Alok Bhandari<br>In the upper Midwest, subsurface tile drainage water is a major contributor of nitrate (NO[subscript]3–N) coming from fertilizers and animal manure. Movement of NO[subscript]3-N through tile drainage into streams is a major concern as it can cause eutrophication and hypoxia conditions, as in the Gulf of Mexico. Denitrifying bioreactors is one of the pollution control strategies to treat contaminated tile drainage water. These bioreactors require four conditions which are: 1) organic carbon source, 2) anaerobic conditions

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Ahart, Megan Leanne. "Sorption and desorption of the industrial chemical MCHM into polymer pipes, liners and activated carbon." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/73425.

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Polyethylene pipes and epoxy or polyurethane linings are increasingly used in drinking water infrastructure. As a recent introduction to the water industry, there are still many unknowns about how polymers will behave in the distribution system specifically relating to sorption and desorption of chemical contaminants. This study is in response to a spill of 4-methylcyclohexane methanol (MCHM) that occurred in January 2014 contaminating the drinking water of nine counties in West Virginia. This study investigated sorption and desorption of the odorous chemical MCHM into polymer drinking water i

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15

Myneni, Satish Chandra Babu. "Oxyanion-mineral surface interactions in alkaline environments: AsO4 and CrO4 sorption and desorption in ettringite." The Ohio State University, 1995. http://rave.ohiolink.edu/etdc/view?acc_num=osu1299004503.

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16

Pu, Xunchi. "EFFECTS OF SOIL PROPERTIES AND MICROBIAL SOURCE ON PENTACHLOROPHENOL BIOREMEDIATION." University of Akron / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=akron1133189415.

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Krajňáková, Soňa. "Interakce ibuprofenu s různými typy půd." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2021. http://www.nusl.cz/ntk/nusl-449400.

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Táto práca sa zameriava problematiku interakcie ibuprofénu s pôdnym systémom. Popísané sú jeho základné vlastnosti, správanie a faktory ovplyvňujúce toto správanie. Vo všeobecnosti najvplyvnejšími faktormi je prítomnosť pôdnej organickej hmoty v pôde a pH. Ibuprofén patrí do skupiny nesteroidných protizápalových liečiv. Patrí medzi ľahko dostupné a vysoko konzumované liečivá. Toto prispieva k jeho narastajúcemu transportu a kontaminácii životného prostredia. Jeho prítomnosť v životnom prostredí môže pôsobiť negatívne na živé organizmy. V experimentálnej časti bol preskúmaný vplyv pôdnej organi

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18

Gharemeshg, Gharavi Ayshe. "Thickness Effects In Hydrogen Sorption Of Magnesium/palladium Thin Films." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614051/index.pdf.

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Magnesium (Mg) thin films with various thicknesses ranging from 50 to 1000 nm capped with nominally 20 nm Palladium (Pd) were prepared by a thermal evaporation unit. A total of 25 glass substrates were used in each experiment. The unit had a rotatable macro shutter, rectangular in shape, rotation axes opposite to the Mg source, which allowed controlled exposure of the substrates. Thin films of 50, 100, 150, 200, 300, 400, 500, 600, 800 nm and 1000 nm were produced in a single experiment. Hydrogenation and dehydrogenation of the films were examined using a gas loading chamber which allowed in-s

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19

Flower, Hilary. "Phosphorus Sorption Dynamics in Shallow Groundwater, Coastal Everglades, Florida, USA." Scholar Commons, 2015. http://scholarcommons.usf.edu/etd/5946.

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For this dissertation I studied phosphorus (P) sorption dynamics in the shallow groundwater of the southern Everglades. In particular, I examined how the ambient water type governs soluble reactive P (SRP) availability through adsorption/desorption reactions with the aquifer matrix. Chapter 2 investigated how P sorption dynamics of the mangrove root zone sediment are affected by high bicarbonate brackish groundwater compared to both fresh groundwater and saltwater. The results from chapter 2 show that the sediment exhibited exceptionally low sorption efficiency in the high bicarbonate brackish

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20

Alsabawi, Khadija, and Evan Gray. "The Effect of Metal Oxides Additives on the Absorption/Desorption of MgH2 for Hydrogen Storage Applications." Thesis, Griffith University, 2019. http://hdl.handle.net/10072/386537.

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Magnesium is considered as one of the more promising candidates for hydrogen storage, primarily because of its abundance and the high hydrogen capacity of MgH2, magnesium dihydride (7.6 wt%). Unfortunately, practical applications of MgH2 are limited by poor hydrogen sorption kinetics and high thermodynamic stability, resulting in slow charging and the need for high temperatures to release the hydrogen. Methods to improve the sorption kinetics of MgH2, through ball-milling, alloying and introducing small amounts of additives are currently under investigation. The aim of this work was to investi

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21

Hunt, James. "Chemical Characterization of Dissolved Organic Matter: Competitive Effects on Phosphorus Sorption to Minerals." Fogler Library, University of Maine, 2006. http://www.library.umaine.edu/theses/pdf/HuntJ2006.pdf.

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22

Georgii, Linnea. "Modelling Competitive Sorption of Per- and Polyfluoroalkyl Substances (PFASs) to Soil and Sorbents." Thesis, Uppsala universitet, Luft-, vatten- och landskapslära, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-438671.

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Per- and polyfluoroalkyl substances (PFASs) have become contaminants of increasing concern to society due to the contamination of drinking water and the ecosystem. A better understanding of the sorption and transport of PFASs in soil systems is urgently needed, however there have been few studies dedicated to investigating competitive sorption among PFASs, and there is no available model to model such effects. This study investigated the sorption behaviour of PFASs of different carbon chain lengths and different functional groups to investigate potential competitive sorption effects. A multi-c

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23

Loganathan, Vijay Anand Clement Prabhakar Feng Yucheng. "Effects of sorption and desorption on bioavailbility of atrazine in soils amended with crop residue derived char." Auburn, Ala., 2006. http://repo.lib.auburn.edu/2006%20Summer/Theses/LOGANATHAN_VIJAY-ANAND_27.pdf.

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Elhaddad, Engy [Verfasser], Wolfgang [Akademischer Betreuer] Ensinger, and Christoph [Akademischer Betreuer] Schüth. "Sorption and Desorption Processes of Organic Contaminants on Carbonaceous Materials / Engy Elhaddad. Betreuer: Wolfgang Ensinger ; Christoph Schüth." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2012. http://d-nb.info/1106118332/34.

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Sato, Shinjiro. "Phosphorus sorption and desorption in a Brazilian ultisol effects of pH and organic anions on phosphorus bioavailability /." [Gainesville, Fla.] : University of Florida, 2003. http://purl.fcla.edu/fcla/etd/UFE0001359.

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Sameh, Ebong F. "Sorption of Ni and Eu to granitic rocks and minerals." Thesis, Loughborough University, 2011. https://dspace.lboro.ac.uk/2134/9324.

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The work presented in this thesis is divided into two parts. The first part is the sorption of Ni and Eu to granitic materials, and cation exchange capacity measurements for powdered and intact samples. The second part is method development on autoradiography. In the first part, static batch sorption experiments were carried out to study the relative sorption properties of different granitic rocks and minerals. Experimental data were described using non-electrostatic correction models such as the Langmuir, Freundlich and Linear models. Sorption data obtained for sorption in a constant pH envir

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Ali, El Haj Mohammed Adam. "Sorption-desorption, extraction and mixed solvent studies of pyrethroids on soils and bed nets using GC-MS/NICI." Thesis, University of Salford, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.395922.

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Åkerblom, Nina. "Bioavailability of pesticides in freshwater sediments : the importance of sorption and uptake routes /." Uppsala : Department of Environmental Assessment, Swedish University of Agricultural Sciences, 2007. http://epsilon.slu.se/200703.pdf.

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Loffredo, Nicolas. "Devenir du séléniate dans les sols : mise en évidence expérimentale et modélisation des phénomènes d'hystérèse de sorption/désorption." Phd thesis, Université du Sud Toulon Var, 2011. http://tel.archives-ouvertes.fr/tel-00608532.

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Dans le contexte des futurs stockages des matières nucléaires en couches géologiques profondes, le transfert desélénium 79 des eaux de nappes vers la biosphère, par le biais de l'irrigation, est un des scenarii envisagés parl'ANDRA. Le sol servirait alors d'interface entre la géosphère et la biosphère.Le modèle actuellement utilisé pour évaluer la mobilité de nombreux éléments dans le sol repose sur une représentationsimple de leur distribution entre la quantité adsorbée sur le sol et la quantité restante en solution (modèleKd), considérée comme instantanée, réversible et linéaire avec la conc

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Silva, Paulo Vinícius da. "Comportamento ambiental e bioatividade sobre plantas daninhas de herbicidas residuais aplicados sobre a palha de cana-de-açúcar em diferentes condições hídricas do solo." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/11/11136/tde-21082018-152101/.

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Herbicidas aplicados nos sistemas de cana-de-açúcar, diretamente no solo ou sobre palha, ficam disponíveis a fenômenos de transporte, retenção e transformação. Nesse contexto, o objetivo desse trabalho foiavaliar a lixiviação e sorção de herbicidas residuais em solos com diferentes características físicoquímicas e em palha de cana-de-açúcar. Para tal, foram realizados quatro experimentos. O primeiro relativo à lixiviação, através da metodologia de bioensaios, seguindo o esquema fatorial 8 x 2 x 2, em delineamento inteiramente casualizado, com quatro repetições, sendo oito profundidades do perf

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31

Alapää, Pär. "Remediation of Contaminated Groundwater Using a SpinChem® Rotating Bed Reactor : Competitive Sorption of Metal(loid)s in Complex Solutions under Varying Geochemical Conditions." Thesis, Luleå tekniska universitet, Geovetenskap och miljöteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-69987.

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The potential of utilizing a new form of chemical processing technology called SpinChem® Rotating Bed Reactor (RBR), in combination with different reactive materials, for the purpose of remediating multi-contaminated aquifers under changing environmental conditions, was investigated using laboratory studies and geochemical models. Four different reactive materials, or combinations thereof, were tested: heat-treated peat powder combined with zero-valent iron (ZVI); IronPeat, which consists of peat powder coated with a ferriferous hydrosol (FFH); and a powdered steel waste product. Results showe

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Niemeyer, Antje. "Prozessanalyse mit Hilfe von mathematischen und statistischen Methoden am Beispiel von Ad- und Desorption im Boden /." Aachen : Shaker, 2000. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=009102162&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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Minaya, Patricia [Verfasser], and Brigitte [Akademischer Betreuer] Urban. "Phosphorus Desorption and Sorption Processes in Activated Sludge Samples with Capacity to Perform EBPR Processes / Patricia Minaya. Betreuer: Brigitte Urban." Lüneburg : Universitätsbibliothek der Leuphana Universität Lüneburg, 2016. http://d-nb.info/1105035441/34.

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Arsego, Itacir Bandiera. "Sorção do herbicidas diuron e hexazinone em solos de texturas contrastantes." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/11/11136/tde-09092009-110016/.

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A distinção de doses dos herbicidas residuais encontradas nas recomendações oficiais para a agricultura está normalmente baseada nas classes texturais dos solos (arenosa, média e argilosa), que são distinguidas pelos teores de argila na camada superficial de solo. No entanto, a disponibilidade dos herbicidas residuais na solução do solo é função do processo de sorção, que é determinado principalmente pelas variações percentuais dos atributos do solo: teor de argila, matéria orgânica e capacidade de troca catiônica (CTC). Portanto, a recomendação de doses dos herbicidas residuais pelas classes

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Eriksson, Johan. "Retention and mobilisation of trinitrotoluene, aniline, nitrobenzene and toluene by soil organic matter /." Umeå : Dept. of Forest Ecology, Swedish Univ. of Agricultural Sciences, 2003. http://epsilon.slu.se/s266.pdf.

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Semprini, Elvio, Patrizia Cafarelli, Stefanis Adriana De, and Anthony A. G. Tomlinson. "Competitive sorption of toluene and acetone on H-ZSM5 zeolite: comparison between molecular simulation calculation and experimental results." Diffusion fundamentals 6 (2007) 69, S. 1-2, 2007. https://ul.qucosa.de/id/qucosa%3A14249.

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Buske, Elias. "Fuktegenskaper hos Quartzene impregnerat med salter." Thesis, Högskolan i Gävle, Avdelningen för bygg- energi- och miljöteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-12541.

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Svenska Aerogel AB has developed the material Quartzene® which is of the typeprecipitated silica and contains calcium - magnesium silicate ((Ca, Mg) SiO3). Thematerial is used for molecular filtration of contaminated air. Qartzene™, which is inpellet form, is porous and has a high internal surface which is a requirement for themolecular filtration. With the use of various impregnations, filtration can affect thedesired outcome. As an example Quartzene® can be impregnated with Potassiumhydroxide and clear the air of Sulfur dioxide, SO2 (Svenska Aerogel AB, n.d).Svenska Aerogel AB has developed

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Inam, Deniz. "Organoclay Preparation For Anionic Contaminant Removal From Water." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606674/index.pdf.

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Increasing concern about the pollution of environment by inorganic and organic chemicals arising from naturally occurring ecological events and industrial processes has created a need for the search of new techniques in the removal of these contaminants. One of the natural material that can be used in such processes is clay. Clay minerals have large surface areas and high cation exchange capacities which enables them to be modified by cationic surfactants. The material prepared, often called as &amp<br>#8216<br>organoclay&amp<br>#8217<br>, can be used to remove hydrophobic organic and anionic

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Barizon, Robson Rólland Monticelli. "Sorção e transporte de pesticidas sob condições de não-equilíbrio." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/11/11140/tde-18112004-153828/.

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O objetivo deste trabalho foi avaliar o método de fluxo em colunas de solo e o método batch na determinação da sorção de imazaquin; avaliar a cinética de sorção e dessorção do imazaquin em solos através do método batch e; determinar a sorção dependente do tempo do diuron e sua interação com o tamanho dos agregados do solo. Na primeira parte foi avaliada a sorção e a mobilidade do imazaquin em solos com diferentes características químicas, físicas e mineralógicas utilizando as técnicas de deslocamento miscível e batch. Com os dados de lixiviação do imazaquin utilizou-se um modelo matemáti

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Vu, Cam Tu. "Comparison between granular and conventional activated sludge for trace metal elements sorption/desorption. Case of copper for landspreading application in France and in Vietnam." Thesis, Limoges, 2017. http://www.theses.fr/2017LIMO0008/document.

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L'épandage des boues d'épuration est un mode de valorisation à la fois écologique et économique pour autant que l'on maitrise leur qualité et notamment la concentration des métaux lourds mobilisables. Le cuivre est une molécule très répandue, naturelle dans l'environnement, largement utilisée dans l'industrie et l'agriculture. En conséquence, les quantités de cuivre dans l'environnement ont augmenté, de sorte que ce dernier a été choisi dans cette étude comme représentant de la pollution anthropique pour évaluer sa mobilité en fonction de la qualité des boues épandues et des sols. 9 boues clas

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Oberle, Michael [Verfasser], Matthias [Gutachter] Ballauff, Regine von [Gutachter] Klitzing, and Gerhard H. [Gutachter] Findenegg. "Single and competitive protein sorption at soft polymeric interfaces / Michael Oberle ; Gutachter: Matthias Ballauff, Regine von Klitzing, Gerhard H. Findenegg." Berlin : Technische Universität Berlin, 2016. http://d-nb.info/1156018412/34.

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Jelena, Beljin. "Karakterizacija bioremedijacionih procesa u sedimentima zagađenim policikličnim aromatičnim ugljovodonicima i procena biodostupnosti." Phd thesis, Univerzitet u Novom Sadu, Prirodno-matematički fakultet u Novom Sadu, 2015. https://www.cris.uns.ac.rs/record.jsf?recordId=95994&source=NDLTD&language=en.

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U okviru ovog istraživanja ispitani su: 1. Optimalni uslovi  zaeksperimente biodegradacije policikličnih aromatičnih ugljovodonika sa istim irazličitim brojem prstenova; 2. Uticaj struture  i matriksa na biodegradacijupolicikličnih aromatičnih ugljovodonika sa istim brojem prstenova; 3.Fitotoksičnost biljaka  (testovi klijavosti i usvajanje policikličnih aromatičnihugljovodonika); 4. Procena  potencijalne  biodostupne frakcije primenomrazličitih hemijskih sorbenata (HPCD, βCD  i  MCD, XAD4 i TenaxTA)  i 5.Korelacija dobijenih rezultata  testovi

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CHENU, MANUELLE. "Etude de l'adsorption et de la desorption de melanges gazeux. Modelisation de l'adsorption competitive et application a la recuperation selective de solvants." Rennes 1, 1997. http://www.theses.fr/1997REN10196.

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Le but de ce travail a ete d'etudier la separation de melanges de composes organo-volatils par adsorption-desorption sur charbon actif. Notre recherche s'est deroulee en deux parties : - dans la premiere partie, des donnees sur les equilibres d'adsorption des composes purs et des melanges ont ete obtenues. Elles nous ont permis de connaitre les differentes affinites des composes avec le support, d'aborder les phenomenes de competition et donc la separation. Des modeles permettant de prevoir les equilibres d'adsorption multicomposes et l'effet de la temperature ont pu etre verifies. - dans la s

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Neway, Bereket. "The influence of Morphology on the Transport and Mechanical Properties of Polyethylene." Doctoral thesis, KTH, Fibre and Polymer Technology, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3668.

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<p>The sorption/desorption behaviour of n-hexane in high molarmass linear polyethylene (PE) and branched PEs with 0.39 and5.09 hexyl branches per 100 main chain C atoms andcrystallinities between 4 and 82% at 298 K has been studied.Crystal core contents determined by Raman spectroscopy werealways lower than those determined by density measurements. Then-hexane solubilities in the copolymers depended in anon-linear manner on the content of penetrable polymercomponent and were lower for homogeneous copolymers than forheterogeneous copolymers at the same contents of penetrablecomponent. The solub

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Ashworth, Hollie. "Partitioning of Sr-90 and Cs-137 in nuclear fuel storage ponds." Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/partitioning-of-sr90-and-cs137-in-nuclear-fuel-storage-ponds(8ed21ee5-009d-4cd2-813a-bebad75e7a15).html.

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Sr-90 and Cs-137 are two key fission products that are important in a number of radioactive waste or contamination clean-up scenarios. This thesis investigates the sorptiondesorption behaviour of these two radionuclides with a number of sorbents relevant to one of the legacy waste storage ponds on the Sellafield site. Sorption-desorption studies were undertaken on brucite (Mg(OH)2), UO2 and UO3 powders to represent components of the fine particulate sludge that has accumulated on the bottom of the pond, resulting from corrosion of the Magnox fuel elements. Brucite was found not to have a signi

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Sabah, Aboubakr. "Présence et comportement des butylétains dans les stations d'épuration des eaux usées par lagunage naturel." Thesis, Montpellier, 2016. http://www.theses.fr/2016MONTS020/document.

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Cette thèse porte sur le comportement d’un composé prioritaire au titre de la Directive Cadre sur l’Eau au niveau européen : le tributylétain (TBT) et ses métabolites (dibutylétain (DBT) et monobutylétain (MBT)). On s’intéresse plus particulièrement aux eaux usées domestiques lors de leur transit dans deux stations d’épuration par lagunage naturel (STEP), traitement adapté aux effluents provenant des zones faiblement urbanisées. Ce travail de thèse vient combler le manque de résultats scientifiques sur (1) le niveau des concentrations en butylétains dans les effluents domestiques des zones peu

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Nikam, Rohit. "Highly charged dendritic polyelectrolytes: Competitive ion binding and charge renormalization." Doctoral thesis, Humboldt-Universität zu Berlin, 2021. http://dx.doi.org/10.18452/22276.

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Polyelektrolyte (PEs) bilden eine große Klasse von Materialien, die in der wissenschaftlichen Forschung immer mehr Beachtung findet. Aufgrund der Lange-Bereich Elektrostatic ist das theoretische Verständnis von PE-Lösungen im Vergleich zu ihren neutralen Gegenstücken noch relativ schlecht gewesen, dadurch die Rationalisierung der Gegenionskondensation auf hochgeladenen PEs herausfordern. Die Komplexität des Problems wird noch zusätzlich durch die gleichzeitige Anwesenheit monovalenter und divalenter Gegenionen in der Lösung, was vielen biologische Umgebungen entspricht, erhöht. Dies beeinfluss

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Hendra, Adhi Pratama. "Comparison of Cs Adsorption Characteristics of Soils in Japan and Indonesia." Kyoto University, 2019. http://hdl.handle.net/2433/242915.

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Harry, I. D. "Modification and characterisation of carbon fibre ion exchange media." Thesis, Loughborough University, 2008. https://dspace.lboro.ac.uk/2134/14123.

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This thesis examines the use of electrochemically treated viscose rayon based activated carbon cloth (ACC) for the removal of metal ions from aqueous effluent streams. Two types of treatment were performed: (i) electrochemical oxidation and (ii) electrochemical reduction to enhance cation and anion sorption capacities of the ACC, respectively. Electrochemical oxidation resulted in a loss of 61% BET surface area due to blockage of pores through formation of carboxylic acidic groups but its cation exchange capacity and oxygen content increased by 365% and 121%, respectively. The optimum constant

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Jelena, Tričković. "Primena sorpcionih parametara odabranih hidrofobnih organskih polutanata na organskoj materiji sedimenata za procenu njihove dostupnosti u sistemima sediment-voda." Phd thesis, Univerzitet u Novom Sadu, Prirodno-matematički fakultet u Novom Sadu, 2009. https://www.cris.uns.ac.rs/record.jsf?recordId=16659&source=NDLTD&language=en.

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Prirodna organska materija zemlji&scaron;ta/sedimenata predstavlja glavnu oblastza sorpciju hidrofobnih organskih jedinjenja, a njene osobine utiču na stepenretencije i konsekventnu (bio)dostupnost organskih jedinjenja. Da bi se procenioekotoksikolo&scaron;ki rizik zagađenih zemlji&scaron;ta/sedimenata po okolinu, dizajniralaodgovarajuća strategija remedijacije ili predvidela sudbina i transport organskihpolutanata u zagađenim zonama, neophodno je razumevanje mehanizma sorpcije idesorpcije na nivou mehanizma uspostavljenih veza. U radu je izvr&scaron;eno ispitivanjesorpcije i desorpcije odabra

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