Pyrite passivation by humic acid investigated by inverse liquid chromatography

Ačai, Pavel; Sorrenti, Estelle; Görner, Tatiana; Polakovič, Milan; Kongolo, M.; Donato, Philippe de

doi:10.1016/j.colsurfa.2008.11.052

Cited by 48 publications

(12 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For example, the adsorption of humic substances on pyrite was studied. The interaction between humic acid and pyrite was irreversible and their adsorption blocked the electrochemical activity of pyrite (Acai et al, 2009). Therefore, biosolids that contain humic substances should interact with sulfides mineral, such as pyrite.…”

Section: Fourier Transform Infrared Spectroscopy (Ftir) Analysesmentioning

confidence: 99%

Adsorption of biosolids and their main components on chalcopyrite, molybdenite and pyrite: Zeta potential and FTIR spectroscopy studies

Reyes-Bozo

Escudey

Vyhmeister

et al. 2015

Minerals Engineering

View full text Add to dashboard Cite

Section: Fourier Transform Infrared Spectroscopy (Ftir) Analysesmentioning

confidence: 99%

Adsorption of biosolids and their main components on chalcopyrite, molybdenite and pyrite: Zeta potential and FTIR spectroscopy studies

Reyes-Bozo

Escudey

Vyhmeister

et al. 2015

Minerals Engineering

View full text Add to dashboard Cite

“…The evidence of pyrite passivation by TETA can be made by measuring its electrochemical activity [40]. Comparing the CV curves of the pyrite samples coated by various concentrations of TETA, all of the anodic and cathodic current peaks are decreased with an increase in TETA.…”

Section: Resultsmentioning

confidence: 99%

Pyrite Passivation by Triethylenetetramine: An Electrochemical Study

Liu

Dang

et al. 2013

Journal of Analytical Methods in Chemistry

View full text Add to dashboard Cite

The potential of triethylenetetramine (TETA) to inhibit the oxidation of pyrite in H2SO4 solution had been investigated by using the open-circuit potential (OCP), cyclic voltammetry (CV), potentiodynamic polarization, and electrochemical impedance (EIS), respectively. Experimental results indicate that TETA is an efficient coating agent in preventing the oxidation of pyrite and that the inhibition efficiency is more pronounced with the increase of TETA. The data from potentiodynamic polarization show that the inhibition efficiency (η%) increases from 42.08% to 80.98% with the concentration of TETA increasing from 1% to 5%. These results are consistent with the measurement of EIS (43.09% to 82.55%). The information obtained from potentiodynamic polarization also displays that the TETA is a kind of mixed type inhibitor.

show abstract

“…The rate of oxidative dissolution of iron sulfide minerals can be affected by organic compounds interacting with their surface . Typically, these compounds can be bound to the iron sulfide surface and obstruct the oxidant access to reactive sites, but they can facilitate the iron dissolution from mineral surface.…”

Section: Introductionmentioning

confidence: 98%

Influence of 2,2′‐bipyridine on oxidative dissolution of iron monosulfide

Chiriţă

Bădică

Constantin

et al. 2014

Surface & Interface Analysis

View full text Add to dashboard Cite

The 2,2′‐bipyridine effects on iron monosulfide (FeS) oxidative dissolution rates have been examined by potentiodynamic polarization and electrochemical impedance spectroscopy. The adsorption of 2,2′‐bipyridine to synthetic FeS was investigated by batch adsorption experiments, SEM, energy‐dispersive X‐ray analysis and Raman spectroscopy. The experiments were performed in air‐saturated solutions at pH 5, 25 °C and an ionic strength of I = 0.004 M NaCl. Correlation between oxidative dissolution rates and 2,2′‐bipyridine adsorption suggests that FeS oxidative dissolution is the result of two antagonistic processes: (i) the inhibiting adsorption of 2,2′‐bipyridine on mineral surface and (ii) the promoting effect of 2,2′‐bipyridine on the iron dissolution from FeS surface. Copyright © 2014 John Wiley & Sons, Ltd.

show abstract

Pyrite passivation by humic acid investigated by inverse liquid chromatography

Cited by 48 publications

References 29 publications

Adsorption of biosolids and their main components on chalcopyrite, molybdenite and pyrite: Zeta potential and FTIR spectroscopy studies

Adsorption of biosolids and their main components on chalcopyrite, molybdenite and pyrite: Zeta potential and FTIR spectroscopy studies

Pyrite Passivation by Triethylenetetramine: An Electrochemical Study

Influence of 2,2′‐bipyridine on oxidative dissolution of iron monosulfide

Contact Info

Product

Resources

About