Absorbent material from pineapple micro fibers Pineapple leaves were used as the supporting material for EPI. Because it is a fiber with high cellulose content, it has a larger surface area than palm fiber and cotton fiber. Therefore, there is a strong attraction to PEI This allows PEI to be fixed more than other natural fibers, so it can be used to remove heavy metal ions contaminating wastewater. It has a high, fast absorption rate and can be separated easily and conveniently. It can also be used to separate harmful gases such as carbon dioxide. Formaldehyde Easy to get out of the air