Impact of Surfactants on the Performance of “Green Additives” as Calcium Carbonate Inhibitors for Aqueous Systems
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Zahid Amjad
und Peter G. Koutsoukos
Abstract
The inhibition of calcium carbonate (CaCO3) precipitation by “green” additives has been examined in aqueous solution. It has been found that additive performance as CaCO3 inhibitor depends upon additive architecture. The influence of surfactants containing different functional group has also been investigated. Results on the evaluation of surfactants suggest that compared to carboxyl group containing additives, surfactants are ineffective CaCO3 inhibitors. Performance data on the impact of cationic surfactant (e. g., cetyltrimethyl ammonium chloride, CTAC) suggest that CTAC exhibits an antagonistic effect on the performance of polymers. The antagonistic behavior shown by CTAC on the performance of additives has been explained in terms of cationic – anionic interactions. SEM study shows that presence of low concentration of additive exhibits marked influence on the morphology of CaCO3 crystals formed in presence of additives.
Kurzfassung
Die Inhibierung von Calciumcarbonat-Niederschlägen (CaCO3) mittels „Grüner Additive“ wurde in wässrigen Lösungen untersucht. Es wurde gefunden, dass die Leistung des Additivs als CaCO3-Inhibitor von dem Bau des Additivs abhängt. Der Einfluss von Tensiden, die unterschiedliche funktionelle Gruppen aufweisen, wurde auch untersucht. Die Auswertung für die Tenside ergab, dass sie im Vergleich zu den Carbonylgruppen enthaltenden Additiven als CaCO3-Inhibitoren nicht effektiv sind. Die Daten zum Einfluss des kationischen Tensids (z. B. Cetyltrimethylammoniumchlorid, CTAC) machen deutlich, dass CTAC einen antagonistischen Effekt auf die Leistung der Polymere aufweist. Das antagonistische Verhalten, gezeigt am Beispiel CTAC, auf die Leistung der Additive konnte mit Hilfe von kationisch-anionischen Wechselwirkungen erklärt werden. Die SEM-Untersuchung zeigt, dass die Gegenwart eines Additivs in geringer Konzentration einen deutlichen Einfluss auf die Morphologie des sich in Anwesenheit des Additivs bildenden CaCO3-Kristals hat.
References
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© 2014, Carl Hanser Publisher, Munich
Artikel in diesem Heft
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- Enhancing the Surface Properties of Some Amine Alginate Salts with Cationic Surfactant
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- Conference and Meeting Report
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Artikel in diesem Heft
- Contents/Inhalt
- Contents
- Abstracts
- Abstracts
- Application
- Enhancing the Surface Properties of Some Amine Alginate Salts with Cationic Surfactant
- Method Development
- Transmission Measurements as Tool to Study Phase Transitions of Liquid Mixtures
- Novel Surfactant
- Synthesis and Surface Active Properties of Dimeric Gemini Sulfonate Surfactants
- Physical Chemistry
- Efficiency Boosting in Technical Grade Sugar Surfactant Based Microemulsions Using Pluronics
- Impact of Surfactants on the Performance of “Green Additives” as Calcium Carbonate Inhibitors for Aqueous Systems
- Study of Surfactant (Benzyldimethylhexadecylammonium Chloride) Effect on Selected Properties of Hydrogels
- Physicochemical Properties of Quaternary Ammonium Surfactants with Hydroxyethyl Groups
- Environmental Chemistry
- Removal of Basic Red 5 on Calcined Kaolinite – Characterization and Adsorption Kinetics
- Conference and Meeting Report
- Emulsions and Dispersions, Trends in Detergency, Cleaning and Hygiene, Sustainability and Product Safety, Forum for Innovations