The Influence of Activation Technique on the Adsorption of Coconut Coir-Activated Carbon in Four Potentially Dangerous Liquids

• Published in: IOP conference series. Earth and environmental science 2023-10, Vol.1255 (1), p.12025
• Main Authors: Wibisono, H S, Hastuti, N, Indrawan, D A, Aini, E N, Pari, G, Hermawan, D
• Format: Article
• Language: English
• Subjects: Acids; Activated carbon; Adsorption; Agricultural wastes; Ammonia; Benzene; Carbon; Carbon content; Chloroform; coconut coir; Coir; hazardous; Hazardous materials; High temperature; Iodine; Liquids; Phosphoric acid; Potash; Potassium; Potassium hydroxide; Potassium hydroxides
• ISSN: 1755-1307; 1755-1315
• DOI: 10.1088/1755-1315/1255/1/012025

Coconut coir is one of the agricultural waste. According to the research it was utilized as an activated carbon. Activated carbon is produced by high temperatures and chemical. Activation process will be carried out by two types of chemical activators i.e. phosphoric acid and potassium hydroxide in 10%. The temperature at 750°C and using three time activation is about 60, 90 and 120 minutes. The result showed that phosphoric acid give the highest yield (42%) with a greater fixed carbon content (69%) than potassium hydroxide activation. As a result of activation with phosphoric acid and potassium hydroxide, the iod absorption value of activated carbon from coconut coir was 770 mg/g and 736 mg/g, respectively. Four potentially hazardous liquids, which revealed that activated carbon derived from phosphoric acid activation had the greatest adsorption capacity for chloroform. In contrast, activated carbon produced from potassium hydroxide activation has greater formaldehyde, ammonia, and benzene adsorption capacities. The findings of the study revealed that the iodine adsorption capacity of activated carbon obtained from the activation of phosphoric acid and potassium hydroxide was comparable (770 and 736 mg/g), indicating a different adsorption preference. Although the adsorption capacity of activated carbon iodine produced by phosphoric acid activation was greater, it was only superior to chloroform compared to the adsorption capacity of activated carbon produced by potassium hydroxide activation at the same concentration, temperature, and activation period. The results of the investigation indicate that the activator has a considerable effect on the adsorption preference of the activated carbon that is produced.