Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Eddy Pazmino"'
Publikováno v:
Frontiers in Water, Vol 2 (2020)
Water quality impacts from artisanal and small-scale alluvial (placer) gold mining operations occur in developing economies across several continents including Asia, Africa, and South America. They often occur in remote and/or resource-poor settings
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c74f8e3b6c03571024706fd8fa9a37d7
https://doi.org/10.3389/frwa.2020.586698
https://doi.org/10.3389/frwa.2020.586698
Autor:
William P. Johnson, Huilian Ma, Kathryn M. Camacho, Eddy Pazmino, Ke Li, Samir Mitragotri, Aaron C. Anselmo, Carl H. Bolster
Publikováno v:
Journal of colloid and interface science. 577
Hypothesis: Natural or engineered colloidal particles are often non-spherical in shape. In contrast to the widely-used “homogeneous sphere” assumption, the non-spherical particle shape is expected to alter particle–fluid-surface interactions, w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3daac7b82930401e4049019c54a6c202
https://pubmed.ncbi.nlm.nih.gov/32505007
https://pubmed.ncbi.nlm.nih.gov/32505007
Publikováno v:
Environmental sciencetechnology. 52(13)
We herein demonstrate the cause of well-observed variant transport behaviors for apparently identical colloids in porous media under conditions of colloid-collector repulsion (unfavorable attachment conditions). We demonstrate that variant colloid tr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fbe11e89bfd5ae57c640922ebc2f0696
https://pubmed.ncbi.nlm.nih.gov/29888906
https://pubmed.ncbi.nlm.nih.gov/29888906
Cyanidation is the main technique for precious metals recovery in the mining industry. This hydrometallurgy technique consists in an electrochemical process that oxidizes gold and reduces oxygen with cyanide solutions at pH values above 10.5. During
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b4b81c250e1ce9eb27e8a2b6358df40
https://doi.org/10.1016/b978-0-08-102057-9.00005-6
https://doi.org/10.1016/b978-0-08-102057-9.00005-6
Publikováno v:
Langmuir. 31:9366-9378
Despite several decades of research there currently exists no mechanistic theory to predict colloid attachment in porous media under environmental conditions where colloid-collector repulsion exists (unfavorable conditions for attachment). It has lon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c8ef9c7e603d330a31e2b5bb36c7a57c
https://doi.org/10.1021/acs.langmuir.5b02369
https://doi.org/10.1021/acs.langmuir.5b02369
Publikováno v:
Environmental sciencetechnology. 51(4)
Surface roughness has been reported to both increase as well as decrease colloid retention. In order to better understand the boundaries within which roughness operates, attachment of a range of colloid sizes to glass with three levels of roughness w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::31b4e1832e7318c5292468ff9a72b825
https://pubmed.ncbi.nlm.nih.gov/28132502
https://pubmed.ncbi.nlm.nih.gov/28132502
Publikováno v:
Environmental Science & Technology. 48:9227-9235
Colloid release from surfaces in response to ionic strength and flow perturbations has been mechanistically simulated. However, these models do not address the mechanism by which colloid attachment occurs, at least in the presence of bulk colloid-col
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad8e25bb059a5db45c76d1b9b7d13e18
https://doi.org/10.1021/es502503y
https://doi.org/10.1021/es502503y
Autor:
David L. Naftz, Cory Angeroth, Ryan C. Rowland, Michael L. Freeman, Eddy Pazmino, Gregory T. Carling
Publikováno v:
Aquatic Geochemistry. 20:547-571
Density stratification in saline and hypersaline water bodies from throughout the world can have large impacts on the internal cycling and loading of salinity, nutrients, and trace elements. High temporal resolution hydroacoustic and physical/chemica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d41d6248be55435467d157b4609497e
https://doi.org/10.1007/s10498-014-9237-8
https://doi.org/10.1007/s10498-014-9237-8
Autor:
William P. Johnson, Eddy Pazmino, Heidi M. Hoven, Gregory T. Carling, Abigail Rudd, Diego P. Fernandez, David C. Richards, Theron Miller
Publikováno v:
Science of The Total Environment. 443:798-811
We collected surface water, pore water, and sediment samples at five impounded wetlands adjacent to Great Salt Lake, Utah, during 2010 and 2011 in order to characterize pond chemistry and to compare chemistry with plant community health metrics. We a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::62254326cd803a6425d9f8bca5b3a5c9
https://doi.org/10.1016/j.scitotenv.2012.11.063
https://doi.org/10.1016/j.scitotenv.2012.11.063
Publikováno v:
Langmuir. 27:14982-14994
Many mechanisms of colloid retention in porous media under unfavorable conditions have been identified from experiments or theory, such as attachment at surface heterogeneities, wedging at grain to grain contacts, retention via secondary energy minim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b2577b999d93ac588616d4737a989d59
https://doi.org/10.1021/la203587j
https://doi.org/10.1021/la203587j