CD Skripsi
Efisiensi Adsorpsi Beberapa Zat Warna Sintetis Golongan Azo Menggunakan Hidroksiapatit
ABSTRACT
Liquid waste generated from the textile industry generally comes from synthetic dyes that is made from azo compounds and their derivatives. This compound is carcinogenic and mutagenic, so its presence in the environment must be reduced. One method of waste treatment is adsorption. The removal efficiency of adsorption is very dependent on the type of adsorbent. The use of hydroxyapatite as an adsorbent for synthetic dyes still needs to be developed. The purpose of this study was to determine the effect of dyes and adsorbent mass on removal efficiency, and determine the best conditions in the adsorption process using of hydroxyapatite. Adsorption was carried out using a variety of dyes (methylene blue, methyl orange and methyl red) and mass of hydroxyapatite (0.5 g, 0.75 g and 1 g). The analysis was performed by spectrophotometry and Fourier Transform Infrared (FTIR) methods. The results showed that the mass of the adsorbent affects the removal efficiency of dye. The best removal efficiency is at 0.5 g adsorbent mass for each dye. Adsorption capacity for methylene blue at 2 minutes equilibrium time was 1.96 mg / g with removal efficiency of 26.12%. Adsorption capacity for methyl red at 5 minutes equilibrium time was 6.68 mg / g with an removal efficiency of 89%. Dye adsorption was not found during adsorption process of methyl orange. Fourier Transform Infrared (FTIR) analysis showed that there was no adsorption of azo group on all spectra, indicated that there was not chemical reaction between the adsorbent and the adsorbate during the adsorption process.
Key Words: adsorption, hydroxyapatite, methyl orange, methyl red, methylene blue.
Tidak tersedia versi lain