Journal of Contaminant Hydrology
Papers 2872
1 page of 288 pages (2,872 results)
#1K. Antoniou (NTUA: National Technical University of Athens)H-Index: 4
#2Daniel Mamais (NTUA: National Technical University of Athens)H-Index: 22
Last.Marina Pantazidou (NTUA: National Technical University of Athens)H-Index: 9
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Abstract The effect of sulfate presence on reductive dechlorination of chlorinated ethenes has been a matter of conflict among the limited reports found in literature. This paper aims to clarify the misconceptions regarding the performance of trichloroethene biotransformation under sulfate reducing conditions by evaluating the effect of different sulfate concentrations on reductive dechlorination and to assess the influence of electron donor dose on dechlorination rate. To this end, batch experi...
#1Xueyan ZouH-Index: 1
#2Yanbao ZhaoH-Index: 14
Last.Zhijun ZhangH-Index: 36
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Abstract Hydroxyapatite (HAP) nanostructures with different morphologies have been successfully synthesized in a facile method and the pH value of the solution has an important effect on morphology. Among them, the porous HAP nanospheres (NSs) with an average diameter of 76 nm were further employed as adsorbent to remove the heavy metal ions in solution. The BET surface area, pore size and pore volume of porous HAP NSs were 45.3 m2·g−1, 2.7 nm and 0.23 m3·g−1, respectively. The ICP results showe...
#1Qiyu Lian (University of Louisiana at Lafayette)H-Index: 4
#2Lunguang YaoH-Index: 2
Last.Daniel Dianchen Gang (University of Louisiana at Lafayette)H-Index: 10
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Abstract Phosphate modified ordered mesoporous carbon (MOMC-NP) has been synthesized and proven to be an effective adsorbent for Pb(II) removal from aqueous solutions. However, the key application components of the mass transfer operations and diffusion coefficient have not been determined. In this study, a modified Finite Bath Diffusion Control Model was mathematically developed containing a constant related to the radius of the adsorbent particle and the fractional attainment of adsorption. Th...
#1Marek Pekala (University of Bern)H-Index: 4
Last.Veerle CloetH-Index: 4
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Abstract In a deep geological repository for radioactive waste in the Opalinus Clay, disposal canisters may be corroded due to sulphide produced by sulphate reducing bacteria (SRB). This paper presents two computational models, a reactive transport model (RTM) and a simplified semi-analytical model (SM), to evaluate the potential of SRB to generate elevated sulphide concentrations, to assess sulphide fluxes to the canister and, in a simplified manner, the resulting canister corrosion. Calculatio...
#1Zhuo Jia (JLU: Jilin University)H-Index: 2
#2Jianmin Bian (JLU: Jilin University)H-Index: 3
Last.Qin Li (JLU: Jilin University)H-Index: 36
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Abstract The groundwater vulnerability assessment has been identified as an important tool of groundwater pollution prevention. In this study, the DRASTIC method was modified to estimate the groundwater vulnerability of porous aquifers to nitrate. The parameter system was optimized by replacing the original parameters of aquifer media, soil media, impact of the vadose zone and hydraulic conductivity with quantitative parameters of aquifer thickness, nitrate attenuation intensity, hydraulic resis...
#1Héloïse A.A. Thouement (TU Delft: Delft University of Technology)H-Index: 1
#2Tomasz Kuder (OU: University of Oklahoma)H-Index: 10
Last.Boris M. van Breukelen (TU Delft: Delft University of Technology)H-Index: 8
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Abstract Back-diffusion of chlorinated ethenes (CEs) from low-permeability layers (LPLs) causes contaminant persistence long after the primary spill zones have disappeared. Naturally occurring degradation in LPLs lowers remediation time frames, but its assessment through sediment sampling is prohibitive in conventional remediation projects. Scenario simulations were performed with a reactive transport model (PHT3D in FloPy) accounting for isotope effects associated with degradation, sorption, an...
1 CitationsSource
#1Arianna Libera (SC: University of Southern California)H-Index: 2
#2Felipe P. J. de Barros (SC: University of Southern California)H-Index: 15
Last.Haruko M. Wainwright (LBNL: Lawrence Berkeley National Laboratory)H-Index: 11
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Abstract This study investigates the potential impact of climate change on residual contaminants in vadose zones and groundwater. We assume that the effect of climate changes can be represented by perturbations in the natural recharge through the aquifer system. We perform numerical modeling of unsaturated/saturated flow and transport and consider different performance metrics: contaminant concentrations at observation wells and contaminant export at the site's boundary. We evaluate the effect o...
#1Natacha Forey (University of Bordeaux)
#2Olivier AtteiaH-Index: 9
Last.Henri Bertin (University of Bordeaux)H-Index: 19
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Abstract Foams can be used to remediate aquifer pollution due to industrial leaks. However, when in contact with oily pollutants, foams may collapse and thus have a very limited life-time. A suitable formulation of biodegradable foam that resists oil contact is therefore needed. Hence, the ability of xanthan polymer and silica colloidal particles to stabilise foam against oil was investigated. Their performance in terms of stabilisation was evaluated via foam generation experiments in columns of...
#1Yixuan Sun (Donghua University)
#2Yuhui Wang (Donghua University)H-Index: 13
Last.Xinshan Song (Donghua University)H-Index: 14
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Abstract Hydraulic conditions of constructed wetlands (CWs) are crucial to pollutant removal and are influenced by factors such as influent loading rates, influent or effluent position or porous media size. The performance evaluation of CWs in real application, however, is difficult and a visualization analysis is difficult due to the black-box effect. In this paper, a nonopaque microcosmic horizontal subsurface flow constructed wetland (HSSFCW) reactor was built in the laboratory for an efficie...
#1P. Fernandez (NMBU: Norwegian University of Life Sciences)H-Index: 1
#2E. BloemH-Index: 2
Last.Helen K. French (NMBU: Norwegian University of Life Sciences)H-Index: 8
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Abstract Assessing redox conditions in soil and groundwater is challenging because redox reactions are oxygen sensitive, hence, destructive sampling methods may provide contact with air and influence the redox state. Furthermore, commonly used redox potential sensors provide only point measurements and are prone to error. This paper assesses whether combining electrical resistivity (ER) and self-potential (SP) measurements can allow the mapping of zones affected by anaerobic degradation. We use ...
1 CitationsSource
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