PENGARUH KECEPATAN SHAKER DALAM ADSORPSI ZAT WARNA (METHYL ORANGE) MENGGUNAKAN CANGKANG TELUR AYAM
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Abstract
The batik industry in Samarinda has been continuously developing from year to year. According to 2024 data, the batik industry generates wastewater amounting to 2,678,400 liters annually. This wastewater contains hazardous compounds, one of which is Methyl Orange, an aromatic azo compound characterized by a double bond (-N=N) and its carcinogenic properties. Therefore, it is necessary to treat the wastewater to eliminate the azo dye completely. One approach that can be applied is adsorption, due to its simplicity and widespread use in treating various types of pollutants. This study aims to investigate the effect of the presence or absence of a shaker on the effectiveness of eggshells as an adsorbent in reducing the dye concentration. The methods used in this research include adsorbent preparation, the adsorption process, and UV-Vis spectrophotometric analysis. Adsorption was carried out with variations in shaker speed at 120, 160, 200, 240, and 280 RPM. The results showed the highest adsorption efficiency of 57.80% at an adsorbent mass of 11 grams, pH 1, for 60 minutes, with a shaker speed of 120 RPM.
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