Study on the ion-exchange properties of the activated carbon black nanoparticles of ACBNPs20_17 code using sodium hydroxide solution

• Main Authors: Wibawa, Pratama Jujur, Nur, Muhammad, Asy’ari, Muhammad, Nur, Hadi, Agam, Mohd. Arif, Saim, Hashim
• Format: Conference Proceeding
• Language: English
• Subjects: Activated carbon; Adsorption; Anion exchanging; Carbon black; Caustic soda; Correlation analysis; Electrical resistivity; Flow velocity; Ion exchange; Nanoparticles; Properties (attributes); Sodium hydroxide
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/5.0005234

Ion–exchange properties of the fabricated activated carbon black nanoparticles of ACBNPs20_17 code have been properly studied using several various concentrations of 0.001, 0.003, 0.005, 0.007 and 0.009 M sodium hydroxide (NaOH) solutions. The study was performed by mean of measuring both hydroxyl anions (OH−) quantity and electrical conductivity of the NaOH solution before and after it flowed down through the ACBNPs20_17 material at 1 drop per second flow rate due to gravitation force for four cycle’s time. The study was aiming to correlate between the properties of anion-exchange and capability of adsorption of the ACBNPs20_17 material compared to that of the pristine carbon black (CB) powder. This research recorded that there was a competition between hydroxyl anion-exchange and hydroxyl anion adsorption. It was clearly known just the concentration of 9 mM NaOH provided hydroxyl anion-exchange on both ACBNPs20_17 material and CB, whereas the lesser concentrations of 1, 3, 5 and 7 mM NaOH provided hydroxyl anion adsorption rather than anion-exchange. In this case, anion-exchange capacity of the ACBNPs20_17 material was higher than that of the pristine CB materials. Ultimately, it can be concluded that adsorption process happened first before anion-exchange process, and the later would precede when the concentration of NaOH solution feed higher enough, i.e. about equal or more than 0.009 M.