Study of Adsorption Process and Performance of Neutral Red Dye Wastewater by Bamboo Shoot Hulls

Abstract:

Surface response optimization of adsorption process of neutral red dye wastewater by bamboo shoot hulls with the factors of pH value, amount of adsorbent, adsorption temperature, adsorption time and the response of adsorption rate were studied. The optimal parameters for adsorption process were of adsorbent concentration of 100 mg·L-1, adsorbent particle size of 60~80 mesh, pH 4.49, adsorbent amount of 3.65 g·L-1, adsorption time and temperature of 2.23 h and 39.70 °C, respectively. The maximal absorption rate got 98.37%. The adsorption follows the Langmuir and Freundlich isotherms, its dynamic behavior was consistent with the second-order reaction rate equations, the adsorption quantity was 179.3201 mg·g-1 at 30 °C. The apparent thermodynamic calculation of infrared spectroscopy showed that the adsorption process were of a spontaneous heat-emitting physical adsorption other than a simple chemical adsorption. Mechanical study showed that the functional groups were of hydroxyl and carbonyl groups on the pore and rough surfaces inside the hulls of bamboo shoots. Bamboo shoot hulls are good biological adsorption materials.

• Periodical: Applied Mechanics and Materials (Volumes 295-298)
• Pages: 1647-1653
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.295-298.1647
• Online since: February 2013
• Authors: Xin Long Jiang, Yi Hua Jiang, Cheng Gang Cai
• Keywords: Adsorption Performance, Adsorption Process, Bamboo Shoots Hull, Neutral Red Dye, Response Surface Methodology (RSM)

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