Evaluate to remove azo dye Chrysoidine Y of activated carbon material produced from bamboo leaves

Tóm tắt

Activated carbons (ACs) are well known as the most commonly used adsorbent in water and wastewater treatment. They have many advantage characteristics such as high surface area, large pores and diverse surface functional groups with the high stability of chemical, mechanical and thermal. The aims of this study are to fabricate and evaluate the ability to remove the azo dye Chrysoidine Y in the water of three activated carbon materials from bamboo leaves, including AC30 (6500C/30 minutes); AC45 (6500C/45 minutes) and AC60 (6500C/60 minutes). The material characteristics determined by SEM, EDX, FTIR and BET methods, etc. showed that all three samples had high C content (over 72%) and appeared functional groups with the capacity of removing azo dye as C = C; C - O - C, O - H. The FTIR results indicated that three samples have adsorption spectra from 400÷4000 cm-1 with characteristic bonds such as C = O, O - H, C - C, C = C. When 20 ml of a solution containing 0.25; 0.5; 1 and 2 g of AC30, AC45 and AC60 materials were added the azo dye volume varied from 2, 3, 4 and 5 ml of Chrysoidine Y, the lowest and highest adsorption capacity were recorded of 133.64 and 361.2 mg/g, respectively. With the highest BET surface area up to 108,9202 m2/g, the AC60 material sample achieved a maximum efficiency of 100% at a reaction time of 30 minutes with a Chysoidine dye/distilled water volume ratio of 2/18 (ml), pH 9, adsorbent content of 0.25 g. The results also showed that the activated carbon from bamboo leaves is a potential sorbent material in removing the azo dye in water