Analysis of the Effect of Soaking Time and HCl Concentration on the Synthesis of Water Hyacinth Adsorbent
Keywords:
Soaking Time, Synthesis of Water, Hyacinth AdsorbentAbstract
This study aims to evaluate the effect of variations in soaking time and HCl concentration on the characteristics and effectiveness of water hyacinth (Eichhornia crassipes)-based activated carbon as an adsorbent. Water hyacinth was chosen because it is an invasive plant with high cellulose and lignin content that has the potential to be processed into activated carbon through pyrolysis and chemical activation. The research was conducted by soaking the carbon in 5%, 10%, and 15% HCl solution for 1, 2, and 3 days, then characterized through water content, ash content, iodine absorption. The results showed that all samples met the SNI standards for moisture content (<15%) and ash content (<10%), but did not meet the iodine absorption standard (≥750 mg/g), with the highest value of 566.5 mg/g. ANOVA analysis showed that both soaking time, HCl concentration, and their interaction had a significant effect on the characteristics of activated carbon. The optimum condition was obtained at 3 days soaking with 15% HCl concentration. This study shows the potential of water hyacinth as an economical and environmentally friendly alternative adsorbent, but further optimization is needed to increase the adsorption capacity to standard.
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