Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Richard C. Landis"'
Publikováno v:
Groundwater Monitoring & Remediation. 41:72-81
Publikováno v:
ACS Earth and Space Chemistry. 4:2337-2346
Reactive iron mineral coatings in redox transition zones play an important role in contaminant attenuation. These mineral coatings include poorly crystalline to crystalline iron sulfides, carbonate...
Autor:
Donna E. Fennell, Scott A. Morgan, Han Hua, Richard C. Landis, Xin Yin, James A. Dyer, Lisa Axe
Publikováno v:
Journal of Hazardous Materials. 420:126600
In this study, a protocol was developed to identify reduction-oxidation (redox) transition zones in an effort to exploit natural source zone depletion processes. A sediment core with a total length of 18-m was collected from a site with historical co
Publikováno v:
Science of The Total Environment. 765:142796
This study focused on comparing iron mineral coatings found in contaminated sediments from a cryogenic (Cryo Core) core versus an Anaerobic Core (collected under oxygen-free and ambient conditions). After thawing the Cryo Core in an oxygen-free glove
Autor:
James A. Dyer, Jing Ma, Richard C. Landis, Carol J. Ptacek, W. Douglas Gould, David W. Blowes, Krista M. A. Paulson
Publikováno v:
Geomicrobiology Journal. 35:1-14
Mercury (Hg) transport and methylmercury (MeHg) production in riverbank sediments are complex processes influenced by site-specific physical and biogeochemical conditions. The South River watershed in VA, USA, contains elevated concentrations of Hg i
Autor:
Richard C. Landis, Elizabeth Erin Mack, Scott A. Morgan, Elodie Passeport, Kathryn A. West, Barbara Sherwood Lollar, Edward J Lutz, Georges Lacrampe-Couloume
Publikováno v:
Environmental Science & Technology. 50:12197-12204
Monitoring natural recovery of contaminated sediments requires the use of techniques that can provide definitive evidence of in situ contaminant degradation. In this study, a passive diffusion sampler, called “peeper”, was combined with Compound
Publikováno v:
Environmental Earth Sciences. 78
Mercury (Hg) was used during 1929–1950 as a catalyst to produce rayon acetate at the former DuPont plant in Waynesboro, Virginia, and released into the South River. Though the use of Hg ceased in the 1970s, the affected ecosystem is still a matter
Publikováno v:
Science of The Total Environment. 762:143105
Reactive iron mineral coatings found throughout reduction-oxidation (redox) transition zones play an important role in contaminant transformation processes. This research focuses on demonstrating a process for effectively delineating redox transition
Publikováno v:
Journal of Hazardous Materials. 308:233-242
Thirty-six biochars produced from distinct feedstocks at different temperatures were evaluated for their potential to remove mercury (Hg) from aqueous solution at environmentally relevant concentrations. Concentrations of total Hg (THg) decreased by
Publikováno v:
Environmental Science & Technology. 49:14649-14654
The introduction of biochar, activated carbon, and other carbonaceous materials to aquatic ecosystems significantly reduces the toxicity and bioavailability of contaminants. However, previous studies have shown that these materials can have negative