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Inhibition of nucleation and crystal growth of calcium carbonate in hard waters using Paronychia arabica in an arid desert region
Author(s) -
Karar Amina,
Henni Abdellah,
Namoune Farid,
Rosei Federico
Publication year - 2020
Publication title -
water and environment journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 37
eISSN - 1747-6593
pISSN - 1747-6585
DOI - 10.1111/wej.12596
Subject(s) - calcite , calcium carbonate , nucleation , precipitation , chronoamperometry , arid , chemistry , groundwater , dielectric spectroscopy , mineralogy , environmental chemistry , chemical engineering , electrochemistry , geology , cyclic voltammetry , organic chemistry , paleontology , physics , geotechnical engineering , electrode , meteorology , engineering
The formation of CaCO 3 of groundwater has important implications in the industry. Many conventional scale inhibitors are considered environmentally unfriendly. In this study, we investigate the effect of aqueous extract of Paronychia arabica (PA) as new green antiscalant agents on the precipitation of CaCO 3 in an arid desert region. The antiscaling properties of these extracts towards CaCO3 formation were tested using chronoamperometry (CA), electrochemical impedance spectroscopy (EIS) and Fast Controlled Precipitation methods. Electrochemical and chemical analysis of Mkhadma groundwater shows a high calcium concentration and the deposit is a pure calcite. The nucleation and formation time were identified. At 32°C, a complete scaling inhibition was obtained using a concentration of 150 mg/L of green extract. The scale inhibitor effect was analysed by an optical microscopic examination.