Anionic polyacrylamide efficiency in goethite removal from aqueous solutions: goethite suspension destabilization by PAM
PBN-AR
Instytucja
Instytut Agrofizyki im. Bohdana Dobrzańskiego Polskiej Akademii Nauk
Informacje podstawowe
Główny język publikacji
angielski
Czasopismo
International Journal of Environmental Science and Technology
ISSN
1735-1472
EISSN
1735-2630
Wydawca
CTR ENVIRONMENT & ENERGY RESEARCH & STUDIES
DOI
URL
Rok publikacji
2019
Numer zeszytu
Strony od-do
3145–3154
Numer tomu
16
Identyfikator DOI
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Autorzy przekładu
(liczba autorów przekładu: 0)
Słowa kluczowe
angielski
Goethite
PAM
Wastewaters
FTIR
Zeta potential
Aggregate size
Streszczenia
Język
angielski
Treść
The main aim of the study was to investigate the anionic polyacrylamide (PAM) efficiency as a flocculant relative to goethite particles. This mineral is a toxic waste produced during hydrometallurgical processes and, as a result, poses a threat to the environment. In the experiments, the following analytical methods were applied: potentiometric titration, zeta potential and adsorption amount measurements, nitrogen adsorption/desorption isotherms, Fourier transform infrared spectroscopy, differential centrifugal sedimentation, UV/Vis spectrophotometry. The result analysis showed that polyacrylamide adsorbs on the goethite surface; however, its adsorption amount depends on the pH value. Due to the adsorbent–adsorbate electrostatic repulsion, the smallest number of macromolecules adsorbs at pH 9. The PAM adsorption affects the goethite surface charge and zeta potential values. It makes these parameters more negative. What is more regardless of pH value, the polymer addition contributes to clear aggregation of solid particles (suspension destabilization). Thus, PAM can be considered as a potential flocculant improving the goethite removal from aqueous wastes.
Cechy publikacji
original_article
Inne
System-identifier
PX-5bd06a7dd5de3e134b71c109
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