Antibiotic Nalidixic Acid Removal by Activated Carbon Prepared from Keratin Wastes

Abstract:

An activated carbon (AC) was prepared from keratin wastes by potassium hydroxide chemical activation. A number of analytical techniques, including Fourier transform infrared spectroscopy, N₂ adsorption-desorption and zeta potential, were used to characterize it. The surface area of AC is 750.6 m²/g and its structure was found to be a well-developed micropore. The pH effect of various experimental parameters on its use to adsorb the antibiotic nalidixic acid (NA) from aqueous solutions has been investigated. If pH was below its pK_a, anionic NA and negative surface charges on AC were neutralized by H⁺. Thereby NA was less water soluble and increased the opportunities for hydrophobic interaction with the surface of AC. The major mechanisms were identified as ion exchange, and hydrophobic and electrostatic interactions.

• Periodical: Advanced Materials Research (Volumes 1004-1005)
• Pages: 895-899
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1004-1005.895
• Online since: August 2014
• Authors: Jing Wang*, Hai Liu, Jian Zhang
• Keywords: Activated Carbon, Adsorption, Keratin Wastes, Nalidixic Acid

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