Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Charles J. Paradis"'
Autor:
Raymond H. Johnson, Ronald D. Kent, Aaron D. Tigar, C. Doc Richardson, Charles J. Paradis, Paul W. Reimus
Publikováno v:
Minerals, Vol 13, Iss 7, p 947 (2023)
The U.S. Department of Energy Office of Legacy Management is responsible for the long-term care and maintenance of former uranium mill sites in the United States. Prior predictions of site flushing times (monitored natural attenuation) are not being
Externí odkaz:
https://doaj.org/article/1ec75024cd684dd98acea6639ca4f447
Publikováno v:
Minerals, Vol 13, Iss 2, p 228 (2023)
At a former uranium mill site where tailings have been removed, prior work has determined several potential ongoing secondary uranium sources. These include locations with uranium sorbed to organic carbon, uranium in the unsaturated zone, and uranium
Externí odkaz:
https://doaj.org/article/99888d51b38746b68e8bb93f5ee8439d
Residual solid-phase uranium from former mill tailings leachate can contribute to persistent concentrations of uranium in groundwater that exceed regulatory levels. Microscale characterization of uranium-contaminated sediment samples is lacking due t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b23855135586cecdc636f665fb123301
https://doi.org/10.21203/rs.3.rs-2338954/v1
https://doi.org/10.21203/rs.3.rs-2338954/v1
Autor:
Charles J. Paradis, Kendyl N. Hoss, Cullen E. Meurer, Jiyan L. Hatami, Martin A. Dangelmayr, Aaron D. Tigar, Raymond H. Johnson
Publikováno v:
Journal of contaminant hydrology. 251
The recharge of stream water below the baseflow water table can mobilize groundwater contaminants, particularly redox-sensitive and sorptive metals such as uranium. However, in-situ tracer experiments that simulate the recharge of stream water to ura
Publikováno v:
The Science of the total environment. 846
There are few biological indicators for freshwater systems subjected to high chloride levels. Freshwater systems receive many forms of chloride such as road salts (e.g., NaCl, CaCl
Autor:
Nicholas R. de Sieyes, Radomir Schmidt, Timothy E. Buscheck, Charles J. Paradis, Douglas M. Mackay
Publikováno v:
Groundwater Monitoring & Remediation. 39:48-60
Autor:
Daliang Ning, Terry C. Hazen, Eric J. Alm, John I. Miller, Lauren M. Lui, Larry D. McKay, Sarah J. Spencer, Andrew D. Steen, Charles J. Paradis, Ji-Won Moon, Adam P. Arkin, Jizhong Zhou, Joy D. Van Nostrand
Microbial-mediated nitrate removal from groundwater is widely recognized as the predominant mechanism for nitrate attenuation in contaminated aquifers and is largely dependent on the presence of a carbon-bearing electron donor. The repeated exposure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c6ed613a15e992070c460166c181ecb6
https://doi.org/10.1101/2021.05.27.446013
https://doi.org/10.1101/2021.05.27.446013
Autor:
Raymond H. Johnson, Cullen Meurer, Gabrielle Sulikowski, Adam Schmidt, Paul W. Reimus, Tim Grundl, Jiyan Hatami, Charles J. Paradis, Anna M. Benko
Publikováno v:
Geological Society of America Abstracts with Programs.
Autor:
Emma R. Dixon, Terry C. Hazen, Edmund Perfect, Jack C. Parker, Lauren M. Lui, Larry D. McKay, Adam P. Arkin, Jonathan D. Istok, Charles J. Paradis
Publikováno v:
Ground Water
The breakthrough curve obtained from a single‐well push‐pull test can be adjusted to account for dilution of the injection fluid in the aquifer fluid. The dilution‐adjusted breakthrough curve can be analyzed to estimate the reaction rate of a s
Autor:
Natasha Sihota, Ehsan Rasa, Nicholas R. de Sieyes, Radomir Schmidt, Douglas M. Mackay, Charles J. Paradis, Emily Hathaway, Juan Peng, Timothy E. Buscheck, Han Zhang
Publikováno v:
Groundwater Monitoring & Remediation. 38:24-39