Browsing by Author "Hansel, Colleen M."

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Microbial communities promoting Mn(II) oxidation in Ashumet Pond, a historically polluted freshwater pond undergoing remediation

Santelli, Cara M.; Chaput, Dominique L.; Hansel, Colleen M. (2014)

Abstract An extensive culture-dependent and independent study was conducted to identify microorganisms contributing to the biogeochemical cycling of manganese (Mn) in Ashumet Pond, a freshwater pond in Massachusetts ...
Microbial- and thiosulfate-mediated dissolution of mercury sulfide minerals and transformation to gaseous mercury

Vázquez-Rodríguez, Adiari I.; Hansel, Colleen M.; Zhang, Tong; Lamborg, Carl H.; Santelli, Cara M.; Webb, Samuel M.; Brooks, Scott C. (2015)

Mercury (Hg) is a toxic heavy metal that poses significant environmental and human health risks. Soils and sediments, where Hg can exist as the Hg sulfide mineral metacinnabar (ß-HgS), represent major Hg reservoirs in ...
Profiling microbial communities in manganese remediation systems treating coal mine drainage

Chaput, Dominique L.; Hansel, Colleen M.; Burgos, William D.; Santelli, Cara M. (2015)

Water discharging from abandoned coal mines can contain extremely high manganese levels. Removing this metal is an ongoing challenge. Passive Mn(II) removal beds (MRBs) contain microorganisms that oxidize soluble Mn(II) ...

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