One for Two: Conversion of Waste Chicken Feathers to Carbon Microspheres and (NH4)HCO3

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• 作者：Lei Gao ; Haibo Hu ; Xuelin Sui ; Changle Chen ; Qianwang Chen
• 刊名：Environmental Science & Technology
• 出版年：2014
• 出版时间：June 3, 2014
• 年：2014
• 卷：48
• 期：11
• 页码：6500-6507
• 全文大小：507K
• 年卷期：v.48,no.11(June 3, 2014)
• ISSN：1520-5851

文摘

Pyrolysis of 1 g of waste chicken feathers (quills and barbs) in supercritical carbon dioxide (sc-CO₂) system at 600 掳C for 3 h leads to the formation of 0.25 g well-shaped carbon microspheres with diameters of 1鈥? 渭m and 0.26 g ammonium bicarbonate ((NH₄)HCO₃). The products were characterized by powder X-ray diffraction (XRD), Field emission scanning electron microscopy (FE-SEM), Raman spectroscopic, FT-IR spectrum, X-ray electron spectroscopy (XPS), and N₂ adsorption/desorption measurements. The obtained carbon microspheres displayed great superhydrophobicity as fabric coatings materials, with the water contact angle of up to 165.2 卤 2.5掳. The strategy is simple, efficient, does not require any toxic chemicals or catalysts, and generates two valuable materials at the same time. Moreover, other nitrogen-containing materials (such as nylon and amino acids) can also be converted to carbon microspheres and (NH₄)HCO₃ in the sc-CO₂ system. This provides a simple strategy to extract the nitrogen content from natural and man-made waste materials and generate (NH₄)HCO₃ as fertilizer.