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Contaminant Removal and Precious Metal Recovery by Lateral Channel Filtration in Mining-Impacted Alluvial Floodplains
ArticleAbstract: Water quality impacts from artisanal and small-scale alluvial (placer) gold mining operations occurPalabras claves:alluvial gold, hyporheic, Mercury, Riverbank filtration, trace metalsAutores:Cesar A. Ron, Chica A., Eddy Pazmiño, Frederick L., Johnson W.P., Luis TapiaFuentes:scopusContribution of Nano- to Microscale Roughness to Heterogeneity: Closing the Gap between Unfavorable and Favorable Colloid Attachment Conditions
ArticleAbstract: Surface roughness has been reported to both increase as well as decrease colloid retention. In orderPalabras claves:Autores:Assemi S., Eddy Pazmiño, Johnson W.P., Rasmuson A.Fuentes:googlescopusCoupled influences of particle shape, surface property and flow hydrodynamics on rod-shaped colloid transport in porous media
ArticleAbstract: Hypothesis: Natural or engineered colloidal particles are often non-spherical in shape. In contrastPalabras claves:Colloid transport, Particle rotation, Porous media, Rod-shaped particles, Shape effectAutores:Anselmo A.C., Bolster C., Camacho K.M., Eddy Pazmiño, Johnson W.P., Li K., Ma H., Mitragotri S.Fuentes:googlescopusDensity-Stratified Flow Events in Great Salt Lake, Utah, USA: Implications for Mercury and Salinity Cycling
ArticleAbstract: Density stratification in saline and hypersaline water bodies from throughout the world can have larPalabras claves:Hydroacoustics, limnology, Mercury cycling, Salinity, Terminal lakes, Western USAAutores:Angeroth C., Carling G.T., Eddy Pazmiño, Freeman M., Naftz D.L., Rowland R.Fuentes:googlescopusApplicability of colloid filtration theory in size-distributed, reduced porosity, granular media in the absence of energy barriers
ArticleAbstract: The vast majority of colloid transport experiments use granular porous media with narrow size distriPalabras claves:Autores:Eddy Pazmiño, Johnson W.P., Ma H.Fuentes:googlescopusGravitational settling effects on unit cell pbkp_redictions of colloidal retention in porous media in the absence of energy barriers
ArticleAbstract: Laboratory column experiments for colloidal transport and retention are often carried out with flowPalabras claves:Autores:Eddy Pazmiño, Johnson W.P., Ma H.Fuentes:googlescopusDirect observations of colloid retention in granular media in the presence of energy barriers, and implications for inferred mechanisms from indirect observations
ArticleAbstract: In this paper we present direct observations of retention of colloids in granular porous media overPalabras claves:Colloid, heterogeneity, Porous media, Secondary energy minimum, Straining, WedgingAutores:Eddy Pazmiño, Johnson W.P., Ma H.Fuentes:googlescopusParticulate and dissolved trace element concentrations in three southern ecuador rivers impacted by artisanal gold mining
ArticleAbstract: Water and sediment samples were collected along river transects at three artisanal gold mining areasPalabras claves:Cyanidation, Dissolved loads, ECUADOR, Methyl mercury, Particulate loads, trace metalsAutores:Carling G.T., Eddy Pazmiño, Fernandez D.P., Gale B.K., Johnson W.P., Merugu S., Nasimba L., Perez L., Ponce M., Rudd A., Ximena DíazFuentes:googlescopusImprovements to the cyanidation process for precious metal recovery from WPCBs
Book PartAbstract: Cyanidation is the main technique for precious metals recovery in the mining industry. This hydrometPalabras claves:Acidic leaching, Cyanidation, GOLD, WPCBsAutores:Eddy Pazmiño, Ernesto De La Torre, Sebastián GámezFuentes:scopusTrace element diel variations and particulate pulses in perimeter freshwater wetlands of Great Salt Lake, Utah
ArticleAbstract: Trace elements (including total and methyl Hg, Sb, Se, U, V, and Mn), field parameters (including diPalabras claves:Antimony, Mercury, selenium, sorption, uranium, VanadiumAutores:Carling G.T., Eddy Pazmiño, Fernandez D.P., Johnson W.P., Rudd A.Fuentes:googlescopus