Efficiency of Bamboo Waste Activated Carbon on Acid Dye Wastewater Treatment

Abstract:

This research aims to produce activated carbon from bamboo waste (used bamboo chopsticks), activated by low-cost and non-toxic chemical substance (Sodium Chloride, NaCl), as an option for silk dyeing wastewater treatment in a small cottage industry. Initially, used bamboo chopsticks were carbonization at 600 °C to produce bamboo charcoal. Then the charcoal was activated using three different methods: (a) soaking in the NaCl solution at the charcoal to NaCl (weight/weight) ratio of 1:1; (b) burning at 800 °C; and (c) activating using the previously mentioned 2 methods together by soaking in the NaCl solution at the ratio of 1:1 then burning at 800 °C. The activated carbons physical characteristics study has found that the activated carbon activated using the third method had the highest BET specific surface area of 327.69 m²/g, total specific pore volume of 0.18 mg/l, and average pore size of 22.52 Å. The adsorption study of the activated carbon activated by NaCl and temperature used synthetic wastewater of red acid dye (AR114) with the initial concentrations of 20 mg/l. The study results have showed that the activated carbon activated by NaCl and temperature reached equilibrium within 180 minutes, and had the color removal efficiency of 77.36%. The adsorption isotherm study results have indicated that the acid dye adsorption of the activated carbon activated by NaCl and temperature followed the Langmuir isotherm.

• Periodical: Advanced Materials Research (Volumes 931-932)
• Pages: 640-644
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.931-932.640
• Online since: May 2014
• Authors: Kanuengnit Suwanasing, Mudjalin Poonprasit*
• Keywords: Acid Dye, Activated Carbon, Adsorption, Bamboo Waste, Color Removal, Dyeing Wastewater

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