Investigation of a novel environmentally friendly inhibitor for calcium carbonate scaling in cooling water

The antiscale properties of palm leaves extract (Phoenix dactylifer L) were studied using electrochemical impedance spectroscopy (EIS) and chronoamperometry techniques, in addition to microscopic examination. Calcium carbonate scales were deposited from the brine solution by cathodic polarization of...

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Bibliographic Details
Published in:Desalination and water treatment 2016-02, Vol.57 (7), p.2870-2876
Main Authors: Abd-El-Khalek, D.E., Abd-El-Nabey, B.A., Abdel-kawi, Mervat A., Ramadan, S.R.
Format: Article
Language:English
Subjects:
Calcium carbonate
Chronoamperometry
Cooling
Cooling water
Corrosion inhibitors
EIS
Electrochemical impedance spectroscopy
Electrochemistry
Electrodes
Green antiscalant
Inhibition
Leaves
Palm
Palm leaves
Plant extracts
Steels
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Summary:The antiscale properties of palm leaves extract (Phoenix dactylifer L) were studied using electrochemical impedance spectroscopy (EIS) and chronoamperometry techniques, in addition to microscopic examination. Calcium carbonate scales were deposited from the brine solution by cathodic polarization of the steel surface at −0.9 V (vs. SCE). Chronoamperometry curves and EIS measurements displayed that palm leaves extract increased the time of CaCO3 nuclei formation and consequently, retarded the growth step. The optical micrographs of the steel electrode clarified that the surface area occupied by the scale particles decreased with increasing plant extract concentrations. The results showed that palm leaves extract could be considered as efficient inhibitor for CaCO3 precipitation.
ISSN:1944-3986
1944-3994
1944-3986
DOI:10.1080/19443994.2014.987174