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Tesi sul tema "Permeable reactive barrier"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 12 febbraio 2022

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1

Abunada, Ziyad. "Innovative soil mix technology constructed permeable reactive barrier for groundwater remediation." Thesis, University of Cambridge, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.709154.

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2

Painter, Brett Duncan Murray. "Optimisation of permeable reactive barrier systems for the remediation of contaminated groundwater." Phd thesis, Lincoln University. Environment, Society and Design Division, 2005. http://theses.lincoln.ac.nz/public/adt-NZLIU20061220.151030/.

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Abstract (sommario):

Permeable reactive barriers (PRBs) are one of the leading technologies being developed in the search for alternatives to the pump-and-treat method for the remediation of contaminated groundwater. A new optimising design methodology is proposed to aid decision-makers in finding minimum cost PRB designs for remediation problems in the presence of input uncertainty. The unique aspects of the proposed methodology are considered to be: design enhancements to improve the hydraulic performance of PRB systems; elimination of a time-consuming simulation model by determination of approximating functions

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3

Painter, Brett D. M. "Optimisation of permeable reactive barrier systems for the remediation of contaminated groundwater." Diss., Lincoln University, 2005. http://hdl.handle.net/10182/12.

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Permeable reactive barriers (PRBs) are one of the leading technologies being developed in the search for alternatives to the pump-and-treat method for the remediation of contaminated groundwater. A new optimising design methodology is proposed to aid decision-makers in finding minimum cost PRB designs for remediation problems in the presence of input uncertainty. The unique aspects of the proposed methodology are considered to be: design enhancements to improve the hydraulic performance of PRB systems; elimination of a time-consuming simulation model by determination of approximating functions

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4

Bulley, Jonathan A. "Improving performance of a permeable reactive barrier in the degradation of trichloroethylene using ultrasound." FIU Digital Commons, 2004. http://digitalcommons.fiu.edu/etd/1820.

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The impact of ultrasound on improving the performance of a granular iron Permeable Reactive Barrier (PRB) in the degradation of Trichloroethylene (TCE) was evaluated. Two treatment columns made of clear Plexiglas with a height of 1ft and a diameter of 2 inches and filled with granular iron were used. One was fitted with 25Khz ultrasound probes. A solution of TCE was run through at constant flow rate. Samples obtained from the column at different residence times before and after sonication were analyzed for concentrations of TCE and used to generate concentration profiles to obtain rate constan

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5

Ulsamer, Signe Martha. "A Model to Characterize the Kinetics of Dechlorination of Tetrachloroethylene and trichloroethylene By a Zero Valent Iron Permeable Reactive Barrier." Digital WPI, 2011. https://digitalcommons.wpi.edu/etd-theses/979.

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"A one dimensional, multiple reaction pathway model of the dechlorination reactions of trichloroethylene (TCE) and tetrachloroethylene (PCE) as these species pass through a zero valent iron permeable reactive barrier (PRB) was produced. Three different types of rate equations were tested; first order, surface controlled with interspecies competition, and surface controlled with inter and intra species competition. The first order rate equations predicted the most accurate results when compared to actual data from permeable reactive barriers. Sensitivity analysis shows that the most importan

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6

Luo, Ping. "Quantification of morphological changes in zero valent iron (ZVI) : effect on permeable reactive barrier (PRB) longevity." Thesis, University of Nottingham, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.503921.

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Permeable Reactive Barriers (PRBs) have been used world-wide to remediate chlorinated solvents, metals and radionuclides from contaminated groundwater by precipitation, sorption, ion exchange and biodegradation in the last two ;ades. There is still however limited information regarding the formation of byproducts and subsequent pore clogging with respect to attaining the predicted, significant life spans (>50 years), even on the most popular PRE materials such as ZVI. This project aimed to visually examine and quantify morphological :hanges on ZVI barriers and subsequently to quantify the PRE

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7

Doherty, R. D. "Modelling of a permeable reactive barrier (PRB) in a manufactured gas plant site, Portadown, Northern Ireland." Thesis, Queen's University Belfast, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269086.

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8

McGeough, K. L. "Kinetics of contaminant removal : a comparative study of site specific treatability studies for permeable reactive barrier design." Thesis, Queen's University Belfast, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.426659.

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9

Lai, Chun Kit. "Laboratory and full-scale studies of a permeable reactive barrier on the dechlorination of chlorinated aliphatic hydrocarbons /." View abstract or full-text, 2004. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202004%20LAI.

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Thesis (Ph. D.)--Hong Kong University of Science and Technology, 2004.<br>Includes bibliographical references (leaves 203-227). Also available in electronic version. Access restricted to campus users.

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10

Uyusur, Burcu. "Laboratory Investigation Of The Treatment Of Chromium Contaminated Groundwater With Iron-based Permeable Reactive Barriers." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607550/index.pdf.

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Chromium is a common groundwater pollutant originating from industrial processes such as metal plating, leather tanning and pigment manufacturing. Permeable reactive barriers (PRBs) have proven to be viable and cost-effective systems for remediation of chromium contaminated groundwater at many sites. The purpose of this research presented in this thesis is to focus on two parameters that affect the performance of PRB on chromium removal, namely the concentration of reactive media and groundwater flux by analyzing the data obtained from laboratory column studies. Laboratory scale columns packed

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11

Madaffari, Maria Grazia. "New mixtures to be used in permeable reactive barrier for heavy-metals contaminated groundwater remediation : long-term removal efficiency and hydraulic behavior." Thesis, Châtenay-Malabry, Ecole centrale de Paris, 2015. http://www.theses.fr/2015ECAP0025/document.

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La dépollution des eaux souterraines est actuellement une des principaux défis environnementaux, considérant le nombre de sites contaminés et le risque posé à la santé humaine et à l'environnement par l'exposition à la contamination des eaux souterraines. La barrière réactive perméable (PRB) est une technologie in situ passive pour la remédiation des eaux souterraines contaminées. Il se compose d'une barrière placée perpendiculairement à l'écoulement des contaminants et constituée d'un matériau réactif qui traite la panache de contaminants le traversant sous le gradient hydraulique naturel. C’

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12

Callahan, Thomas Patrick. "Non-Newtonian fluid injection into granular media." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/39618.

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The process of fluid injection into granular media is relevant to a wide number of applications such as enhanced oil recovery, grouting, and the construction of permeable reactive barriers. The response of the subsurface is dependent on multiple factors such as in-situ stresses, fluid properties, flow rate, and formation type. Based on these conditions a variety of response mechanisms can be initiated ranging from simple porous infiltration to hydraulic fracturing. Currently, the mechanics of fluid injection into competent rock are well understood and can be sufficiently modeled using linear

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13

Newton, B. T. "Applied gas tracing or permeable reactive barriers (PRBs)." Thesis, Queen's University Belfast, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.602710.

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The aim of my thesis is to evaluate the use of applied dissolved noble gas tracers for the estimation of flow and transport parameters in permeable reactive barriers (PRBs) and for the assessment of changes in those parameters over time. PRBs consist of reactive materials that are p l aced in the subsurface to intercept a contaminant plume. PRBs have been proven to effectively remediate a variety of groundwater contaminants. The main limitation to the use PRBs as a remediation tool is the build up of mineral precipitates and gases that may inhibit water flow through the barrier, decrease the r

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14

Audí, Miró Carme. "Compound Specific Isotope Analysis ((13)C, (37)Cl,( 2)H) to trace induced attenuation of chlorinated organic contaminants in groundwater." Doctoral thesis, Universitat de Barcelona, 2014. http://hdl.handle.net/10803/145921.

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Chloroform (CF), tetrachloroethene (PCE) and trichloroethene (TCE) are dense chloro-aliphatic hydrocarbons (CAH) extensively used as industrial solvents. These compounds have been largely released to the environment due to poor waste management. In this thesis, the effect of a ZVI-PRB installed at a field site contaminated mainly with PCE, TCE and cis-DCE was evaluated. Moreover, a novel strategy to degrade the recalcitrant CF -alkaline hydrolysis induced by concrete-based recycled construction wastes- was proposed and developed in order to test its efficiency in degrading this pollutant. Co

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15

Mohammed, Mubeen Lee Jejung. "Effect of geological heterogeneity on permeable reactive barriers in groundwater remediation." Diss., UMK access, 2006.

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Thesis (M.S.)--Dept. of Geosciences. University of Missouri--Kansas City, 2006.<br>"A thesis in urban environmental geology." Typescript. Advisor: Jejung Lee. Vita. Title from "catalog record" of the print edition Description based on contents viewed Jan. 29, 2007. Includes bibliographical references (leaves 60-62). Online version of the print edition.

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16

Hafsi, Amine. "Design Methodology for Permeable Reactive Barriers Combined With Monitored Natural Attenuation." Thesis, Virginia Tech, 2008. http://hdl.handle.net/10919/32264.

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Permeable reactive barrier (PRB) technology is increasingly considered for in situ treatment of contaminated groundwater; however, current design formulas for PRBs are limited and do not properly account for all major physical and attenuation processes driving remediation. This study focused on developing a simple methodology to design PRBs that is easy to implement while improving accuracy and being more conservative than the available design methodologies. An empirical design equation and a simple analytical design equation were obtained to calculate the thickness of a PRB capable of degrad

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17

Somayajula, Sreerama Murthy Kasi. "In Situ Groundwater Remediation using Enricher Reactor-Permeable Reactive Biobarrier." Diss., North Dakota State University, 2012. https://hdl.handle.net/10365/26648.

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Permeable reactive biobarrier (PRBB) is a flow-through zone where microorganisms degrade contaminants in groundwater. Discontinuous presence of contaminants in groundwater causes performance loss of a PRBB in removing the target contaminant. A novel enricher reactor (ER) - PRBB system was developed to treat groundwater with contaminants that reappear after an absence period. ER is an offline reactor for enriching contaminant degraders, which were used for augmenting PRBB to maintain its performance after a period of contaminant absence. The ER-PRBB concept was initially applied to remove benze

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18

Moore, Angela Mary. "Anion reactions at iron surfaces : implications for perchlorate remediation using permeable reactive barriers /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2003. http://uclibs.org/PID/11984.

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19

Morar, Doina Lorena. "Release of inorganic and organic contaminants from fly ash amended permeable reactive barriers." College Park, Md.: University of Maryland, 2008. http://hdl.handle.net/1903/7855.

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Thesis (M.S.) -- University of Maryland, College Park, 2008.<br>Thesis research directed by: Dept. of Civil and Environmental Engineering. 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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20

Ouellet-Plamondon, Claudiane. "Characterisation and performance of innovative aluminosilicates for soil mix technology permeable reactive barriers." Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610261.

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21

Visser, Gunnar Lieb. "Permeable reaction barrier system for the treatment of textile wastewater using cobalt oxide." Thesis, Cape Peninsula University of Technology, 2017. http://hdl.handle.net/20.500.11838/2631.

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Thesis (MEng (Chemical Engineering))--Cape Peninsula University of Technology, 2018.<br>Advanced oxidation processes (AOPs) have gained considerable interest in the wastewater treatment industry. Low selectivity to organic pollutants and the high oxidation potentials provided by the free radicals produced from these processes are the root of this interest. Hydroxyl radical based AOPs seemed to dominate the field but recently sulphate radical based AOPs started to become more popular due to their even higher oxidation potential. The textile industry is known to be a considerable contributor to

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22

Franklin, Phoebe. "Are permeable reactive barriers (PRBS) a viable technology for remediation of diffuse nitrate pollution?" Thesis, University of Nottingham, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.523068.

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23

Wantanaphong, Janthawan. "Physico-chemical quantification of natural and waste materials for remediation of metal contaminated groundwaters using permeable reactive barriers." Thesis, University of Nottingham, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.408622.

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24

Meza, Maria I. "The use of PRBs (permeable reactive barriers) for attenuation of cadmium and hexavalent chromium from industrial contaminated soil." Muncie, Ind. : Ball State University, 2009. http://cardinalscholar.bsu.edu/432.

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25

Goo, Holly Shu Chai. "Barriers to demonstrating and implementing innovative technologies at hazardous waste sites : case study of the permeable reactive wall at the Massachusetts Military Reservation." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/41367.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1996.<br>Includes bibliographical references (leaves 104-188).<br>by Holly Shu Chai Goo.<br>M.Eng.

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26

Gibert, Agulló Oriol. "Processos físico-químics i biològics en el tractament d'aigües àcides de mina: Aplicació a barreres permeables reactives." Doctoral thesis, Universitat Politècnica de Catalunya, 2004. http://hdl.handle.net/10803/6443.

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CATALA <br/> <br/>La contaminació de les aigües superficials i subterrànies representa el problema mediambiental més greu a què s'ha d'enfrontar la indústria minera, a causa de les denominades aigües àcides de mina (AAM), generades com a resultat de la lixiviació dels residus finals dipositats a les basses d'emmagatzematge. <br/>Els jaciments minerals que contenen sulfurs metàl·lics són una font potencial d'AAM. L'exposició d'aquests materials als agents atmosfèrics, com l'oxigen i l'aigua, dóna lloc a la generació d'un lixiviat fortament contaminat, amb una elevada acidesa (pH4), alts

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27

Trindade, Giuliano Bordin. "Estudo da remediação de um aquífero contaminado com sulfato e metais através de barreira reativa permeável orgânica." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/3/3145/tde-11052016-153629/.

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Este trabalho teve como objetivo geral estudar a viabilidade técnica de utilizar bagaço de cana como meio reativo de barreiras reativas permeáveis (BRP) para remoção de sulfato e metais de águas subterrâneas contaminadas. O estudo baseou-se em investigação experimental, por meio de ensaios laboratoriais de coluna, e em modelagem matemática, para a qual utilizaram-se também alguns dados obtidos em um estudo de caso de uma unidade industrial contaminada com sulfato e metais. Neste local contaminado, as características hidrogeológicas e topográficas propiciam a utilização de uma barreira reativa

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Zakaria, Khaled. "Caractérisation d'un nouveau matériau et valorisation dans les barrières perméables réactives." Phd thesis, Ecole Centrale de Lille, 2012. http://tel.archives-ouvertes.fr/tel-00805274.

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La valorisation des déchets industriels est de nos jour un défit international ayant des intérêts économiques et environnementaux. Dans ce cadre, l'entreprise Solvay travail sur la gestion de ses déchets et plus particulièrement ceux produits de la fabrication du carbonate de sodium " soude ". Ils sont actuellement stockés dans des bassins de décantation. Cependant, des contraintes règlementaires sont récemment apparues limitant ainsi la construction de nouveaux bassins. La valorisation de ces déchets est par conséquent impérative pour l'entreprise. Plusieurs voies de valorisation sont envisag

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Hsu, Chia-Ping, and 徐嘉彬. "Groundwater Nitrate Removal by Zero-Valent Iron Permeable Reactive Barrier." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/59266737515942053622.

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碩士<br>國立臺北科技大學<br>環境規劃與管理研究所<br>92<br>Laboratory scale column tests were conducted to obtain the field design parameters and possible operation problems after field installation. For the nitrate contaminant water made in the laboratory, nitrate reduction by zero-valent iron was found affected by the coating or metal oxide on the ZVI surface. Without pretreatment of ZVI, nitrate removal rate was only 30%. Surface coating can be removed by strong reduction agent (NaBH4) or acid washing, but acid washing was shown better efficiency in this study. In the column tests, 1 mg ZVI can on

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Mieles, John Michael. "Semi-Analytical Solutions of One-Dimensional Multispecies Reactive Transport in a Permeable Reactive Barrier-Aquifer System." Thesis, 2011. http://hdl.handle.net/1969.1/ETD-TAMU-2011-05-9167.

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At many sites it has become apparent that most chemicals of concern (COCs) in groundwater are persistent and not effectively treated by conventional remediation methods. In recent years, the permeable reactive barrier (PRB) technology has proven to be more cost-efficient in the long-run and capable of rapidly reducing COC concentrations by up to several orders of magnitude. In its simplest form, the PRB is a vertically emplaced rectangular porous medium in which impacted groundwater passively enters a narrow treatment zone. In the treatment zone dissolved COCs are rapidly degraded as they c

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McLean, Neil Ross. "Use of Drains for Passive Control of Flow Through a Permeable Reactive Barrier." Thesis, 2007. http://hdl.handle.net/10012/3375.

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Abstract Permeable reactive barrier technology is a cost effective means of treating near surface groundwater contaminant plumes. However, current reactive barrier technology lacks the capacity to manipulate flow rates and thus hydraulic retention time (HRT) within the barriers in order to maximize the effectiveness and longevity of the media. This study examines the effectiveness of tile drains as passive controls on the flow rate of ground-water through an existing wood particle media permeable reactive barrier treating agricultural nitrate. The use of upgradient and downgradient tile dr

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FANG, YEH JU, and 葉如芳. "Microbial Community Dynamics in a Permeable Reactive Barrier using Real-time PCR Technique." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/22789166291578300902.

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碩士<br>大葉大學<br>環境工程學系碩士班<br>96<br>This study was conducted with the application of denaturing gradient gel electrophoresis (DGGE), and real-time quantitative polymerase chain reaction (real-time PCR) molecular biotechnology for monitoring the permeable reactive barrier (PRB) in the relation with BTEX decomposition efficiency and the distribution of microbial community. Various amounts of nitrogen nutrients and BTEX were added to examine the treatment efficiencies. It was shown that the high sodium nitrate amount had improved the BTEX removal, which was an evidence of effects on BTEX treatment.

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Lai, Ranee Wan Man. "The use of clinoptilolite as permeable reactive barrier substrate for acid rock drainage." Thesis, 2005. http://hdl.handle.net/2429/17004.

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This study investigated the use of clinoptilolite as a permeable reactive barrier (PRB) substrate for retaining heavy metals from Acid Rock Drainage (ARD). PRBs are one of the options for retaining metals from ARD, allowing a cleaned groundwater plume to the receiving water bodies. The mineral clinoptilolite, a molecular sieve which has high cation exchange capacity, can retain heavy metals. Clinoptilolite is available in many locations and is inexpensive (~CDN$100-200/tonne). The suitability of clinoptilolite for the use as a PRB substrate was evaluated based on its chemical stability and met

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Lin, Ming-Hei, and 林明憙. "Electrolysis-Enhanced Permeable Reactive Barrier Packed with Nano-Pd/Fe Bimetallic Particles of Perchloroethylene." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/52050176023193793112.

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碩士<br>國立屏東科技大學<br>環境工程與科學系所<br>100<br>The aim of this study is to investigate the degradation efficiency of target pollutant, perchloroethylene (PCE), by nano-palladium/iron (Pd/Fe) bimetallic metal particles enhanced by electrolysis. The experiments were divided into four stages. The first stage was to characterize the properties of quartz sand and nano-Pd/Fe particles. The second stage was to conduct the batch tests under various pH values (pH 8-9) on the effects of PCE degradation with nano-Pd/Fe. The third stage was to observe the transport behaviors of solutes through the porous media in

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Hoppe, Jutta. "Geochemical Characterization and Longevity Estimates of a Permeable Reactive Barrier System Remediating a 90Sr plume." Thesis, 2012. http://hdl.handle.net/10012/7293.

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In 1998, a permeable reactive barrier system was installed at the Atomic Energy of Canada Ltd. (AECL) Chalk River Laboratories in Chalk River, Ontario, to prevent the discharge of a 90Sr plume into a nearby swamp. The system known as the “Wall and Curtain” contains clinoptilolite, a zeolite, as a reactive material to sorb 90Sr. The overall objective of this study was to provide refined estimates of the efficiency and longevity of the system. To better understand the flow in the aquifer and through the Wall and Curtain, a detailed physical field characterization of the site was performed. Boreh

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Dam, Quoc-Khanh, and 譚國卿. "Integration of Permeable Reactive Barrier Technology and Immobilization for MTBE and BTEX Contaminated Groundwater Treatment." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/16976578381407097320.

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碩士<br>大葉大學<br>環境工程學系碩士班<br>97<br>The purpose of this study was integration of permeable reactive barriers (PRB) technology and immobilization for MTBE and BTEX contaminated groundwater treatment. This study was first investigated to make the immobilized bead highly strong stability. After conducting batch and column tests, it was integrated with PRB system. PRB was run at various concentrations of substrate and removal efficiency was monitored. Results revealed that (1) Bead was formed with high stability with 2.46 hours and 6 hours immersed in solution of (5% H3BO3, 2.5% CaCl2) and 5% KH2PO

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Wu, Shih-Kai, and 吳士愷. "Analytical model for multispecies transport in a permeable reactive barrier- aquifer system subject to nonequilibrium." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/26xht7.

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碩士<br>國立中央大學<br>應用地質研究所<br>106<br>The transport behavior of contaminants in a permeable reactive barrier (PRB)- aquifer system is complicated because of the differences in the physical and chemical properties of the PRB and the aquifer. However, dual-domain contaminant transport models are efficient tools for predicting and describing the movement of contaminants in a PRB–aquifer system. Multispecies transport models should have the ability to account for mass accumulation of the parent species while simultaneously considering the distinct transport and reactive properties of both the parent a

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Pan, Chi-liang, and 潘祈良. "The Application of Biological Permeable Reactive Barrier with Immobilized Cell Technique for Diesel-Contaminated Groundwater Remediation." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/89255219361384725452.

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碩士<br>國立成功大學<br>環境工程學系碩博士班<br>97<br>Soil and groundwater petroleum contamination is becoming more and more serious in recent years due to oil-leaking from storage tanks. Among current remediation technologies, bioremediation is getting more and more popular for its effectiveness, lower operational cost and milder environmental impacts. In this study, diesel degrading bacteria were utilized to treat the contaminated groundwater. However, the bacteria may be washed out from the contaminated zone by the groundwater flow and lowered the removal efficiency. Therefore in this study, we used the

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Wang, Dong-Yi, and 王東毅. "Treatment of Trichloroethylene in Groundwater Using Permeable Nano-Scale Iron Reactive Barrier Coupled with Persulfate - Sand Box Experiments." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/57574939524067079118.

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碩士<br>國立屏東科技大學<br>環境工程與科學系所<br>96<br>Organic chlorinated solvents are widely used in industrial processes, such as trichloroethylene (TCE) and perchloroethylene (PCE). If those chlorinated solvents are not properly handled, they may possibly leak into soil and further pollute the aquifer. The objective of this study is to investigate the treatment efficiency of aqueous trichloroethylene by permeable reactive barrier (PRB) filled with nano-sacle iron and coupled with persulfate (Na2S2O8). The experiments were designed to simulate the solutes transporting through the porous media and the remedia

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Chi, Hao-Jan, and 季皓然. "Effect of polarity reversal on electrokinetic remediation of Bisphenol A contaminated soil: with or without permeable reactive barrier and sodium persulfate." Thesis, 2019. http://ndltd.ncl.edu.tw/cgi-bin/gs32/gsweb.cgi/login?o=dnclcdr&s=id=%22107NCHU5087011%22.&searchmode=basic.

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碩士<br>國立中興大學<br>環境工程學系所<br>107<br>Bisphenol A (BPA) is an artificial industrial raw material and is widely used in the manufacture of various products. However, BPA is also a type of endocrine disrupting chemical (EDCs) which may affect human endocrine, reproductive, and nervous systems. Electrokinetic (EK) soil remediation is a remarkable technology, which especially recommended for the in-situ treatment of low permeability soils with low hydraulic conductivity values. In addition, EK remediation could combine with other soil remediation technologies to improve the efficiency. Sodium persulfa

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41

Guo, Qiang. "Some Aspects of Arsenic and Antimony Geochemistry in High Temperature Granitic Melt – Aqueous Fluid System and in Low Temperature Permeable Reactive Barrier – Groundwater System." Thesis, 2008. http://hdl.handle.net/10012/3579.

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Arsenic and antimony are important trace elements in magmatic-hydrothermal systems, geothermal systems and epithermal deposits, but their partitioning behavior between melt and aqueous fluid is not well understood. The partitioning of arsenic and antimony between aqueous fluid and granitic melt has been studied in the system SiO2-Al2O3-Na2O-K2O-H2O at 800 degree C and 200 MPa. The partition coefficients of As and Sb between aqueous fluid and melt, are 1.4 +- 0.5 and 0.8 +- 0.5, respectively. The partitioning of As is not affected by aluminum saturation index (ASI) or SiO2 content of the melt,

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42

Elder, Carl R. "Evaluation and design of permeable reactive barriers amidst heterogeneity." 2000. http://www.library.wisc.edu/databases/connect/dissertations.html.

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43

Lee, Taeyoon. "Using waste foundry sands as a reactive media in permeable reactive barriers." 2002. http://www.library.wisc.edu/databases/connect/dissertations.html.

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44

Apte, Sachin V. "Reactive media for chromium reduction under alkaline conditions for use in permeable reactive barriers." Thesis, 2001. http://library1.njit.edu/etd/fromwebvoyage.cfm?id=njit-etd2001-011.

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45

Hung, Hsu-Wen, and 洪旭文. "Remediation of MTBE-contaminated Groundwater Using Adsorbent-based Permeable Reactive Barriers." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/05362762873510117875.

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Abstract (sommario):

博士<br>國立成功大學<br>環境工程學系碩博士班<br>94<br>Methyl tert-butyl ether (MTBE) is the most common oxygenated fuel additive used to increase the octane rating and to enhance the combustion efficiency of gasoline. As a consequence of widespread use of MTBE, it has been found to be a ubiquitous and recalcitrant contaminant in groundwater and surface water due to its physicochemical properties. To remediate MTBE-contaminated groundwater, the passive in-situ permeable reactive barriers (PRBs) with different types of adsorbing media including granular activated carbon (GAC), carbonaceous resin and zeolite wer

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46

Sapp, Mandy M. "Uranium and technetium bio-immobilization in intermediate-scale permeable reactive scale barriers." Thesis, 2003. http://hdl.handle.net/1957/30056.

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Groundwater at Oak Ridge National Laboratory's Field Research Center (FRC) is contaminated with U(VI) and Tc(VII), has pH values as low as 3.3, and nitrate concentrations as high as 120 mM. The objective of this research was to determine if in-situ bio-immobilization is a viable treatment alternative for this water. A laboratory column packed with crushed limestone and bicarbonate was used to model in-situ pH adjustment. Denitrification and metal reduction were modeled in columns packed with FRC sediment with ethanol as the electron donor. Two intermediate-scale physical models deployed in the

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47

Williams, Randi Lee. "Using dissolved gas analysis to investigate the performance of permeable reactive barriers." Thesis, 2005. http://hdl.handle.net/2429/16438.

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The strongly reducing nature of permeable reactive barrier (PRB) treatment materials can lead to gas production, potentially resulting in the formation of gas bubbles and ebullition. For this work degassing in the saturated zone of PRB systems due to the production of gases (primarily CO₂ and CH₄) is investigated using the depletion of Aland N₂, naturally present non-reactive gases, in order to identify, confirm, and possibly quantify chemical and physical processes occurring. Dissolved gas sampling and analysis were conducted at three PRB sites designed for the treatment of groundwater

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48

Mergener, Elizabeth A. "Assessing clogging of permeable reactive barriers in heterogeneous aquifers using a geochemical model." 2002. http://catalog.hathitrust.org/api/volumes/oclc/50263619.html.

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Thesis (M.S.)--University of Wisconsin--Madison, 2002.<br>Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 74-76).

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49

Hung, Tsung-Po, and 洪琮博. "Removal of Pentachlorophenol in Groundwater by E-Fenton Coupled with Permeable Reactive Barriers." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/45698301935868727660.

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碩士<br>國立中興大學<br>環境工程學系所<br>96<br>Permeabe reactive barrier(PRB) embedded with zero-valent iron(Fe0) has been used as the remediation technology of ground water. The method develops greatly in the recent years for the dechlorination or completely destroy of pentachlorophenol(PCP). The E-Fenton method is a popular waste water treatment technique that could produce hydrogen peroxide by cathode, which then react with ferrous iron (called Fenton processes). Fenton reaction could degrade PCP by oxidation. The purpose of this study is to estimate the removal of PCP by E-Fenton coupled with PRB in a

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50

Li-Hsuan, Chen, and 陳立軒. "A Study on Biodegradation Capability and Microbial Community Dynamics using Permeable Reactive Barriers." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/19660992833794328970.

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碩士<br>大葉大學<br>環境工程學系碩士班<br>95<br>The purposes of this study are to evaluate the bioremediation capabilities using two laboratory-scale permeable reactive barriers (PRB) in a BTEX-contaminated groundwater, and to explore the changes in microbial community in the reactor by using PCR-SSCP. The bioremediation capabilities were evaluated by introducing biostimulation (addition of oxygen-releasing materials and nitrogen) and bioaugmentation (addition of BTEX-degrading cultures). A relationship among biodegradation capability, changes in microbial community and total plate count of microorganisms

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