Study of The Utilization of Pineapple Leaves (Ananas cosmosus) as Adsorbent for Lowering Copper Ion Content (Cu2+), Iron (Fe3+), and Zinc (Zn2+) in the Water.

Abstract

. It has been conducted the use of pineapple leaf (Pineapple cosmosus) as an adsorbent to reduce ion copper (Cu²⁺), iron (Fe³⁺), and zinc (Zn²⁺) contents in water. First pineapple leaf powder is cut to pieces, dried, finely ground, and activated with 10% HCl by soaking for 24 hours. Two grams of pineapple leaf powder, which was previously activated by 10% HCl added into each 100 mL ions of copper (Cu²⁺), iron (Fe³⁺), and zinc (Zn²⁺) standard solution 20 mg/L, stirred homogeneously, and left for 24 hours, then filtered. The concentration ions of copper (Cu²⁺), iron (Fe³⁺), and zinc (Zn²⁺) infiltrate were determined by using Atomic Absorption Spectrophotometer (AAS). The result of this research showed that pineapple leaf powder-activated 10% HCl can absorb 95.98% of copper (Cu²⁺), 79.16% of iron (Fe³⁺), and 88.71% of zinc (Zn²⁺).