Identification of activated NaOH carbon of synthesis of sea pandanus leaves (P. odorifer) for Fe³⁺ and Cu²⁺ ions adsorption

This research aims to characterize activated NaOH carbon of sea pandanus leaves (P. odorifer) which include water content, ash content, volatile content, carbon content and adsorption capacity of iodine. Further, we investigate adsorption capacity of activated NaOH carbon to Fe³⁺ and Cu²⁺ ions, and its adsorption type. Sea pandanus leaves (P. odorifer) was taken from Trisik Beach in Kulonprogo. The carbonation process is carried out at a temperature of 500 °C, followed by chemical activation using 1% NaOH solution and physical activation with a temperature of 700 °C while carbon dioxide gas flowed for 2 hours. Identification of capacity of activated carbon to heavy metals is conducted in batch. The characterization results show that water content and iodine adsorption capacity of activated NaOH carbon complied with SNI 06-3730-1995, respectively of 5.38% and 2463.63 mg/g. While the volatile content (59.09%), ash content (17.88%), carbon content (17.66%) did not fulfill SNI 06-3730-1995. The adsorption capacity of activated NaOH carbon to heavy metal ions of Fe³⁺ and Cu²⁺ respectively is 0.895 and 0.996 mg/g.