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    An environmentally friendly carbon aerogels derived from waste pomelo peels for the removal of organic pollutants/oils

    Year: 2017

    Journal: Microporous Mesoporous Mat., Volume 241, nov-15, page 285–292

    Authors: Zhu, Lin; Wang, Ya; Wang, Yaxiong; You, Liangjun; Shen, Xiangqian; Li, Songjun

    Organizations: Natural Science Foundation of Jiangsu Province [BK20130511]; National Natural Science Foundation of China [51274106]; Jiangsu Province under innovation/entrepreneurship program [[2015]26]

    Keywords: Pomelo peels; Carbon aerogel; Sorption; Organic pollutants; Oils

    The frequent occurrence of organics/oils leakage incidents has caused a chain of serious negative influence on local water environment and ecological environment in the past few decades. In this paper, a novel family of biomass-based carbon aerogels was fabricated through the hydrothermal carbonization, freeze-drying and pyrolysis process using waste pomelo peels as the precursors. The internal morphology, structure, and chemical composition were characterized and investigated using scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectroscopy and the nitrogen adsorption-desorption isotherm. The BET analysis showed that the specific surface area of the carbon aerogel could reach up to 466.0-759.7 m(2)/g when the carbonization temperature was in a range from 600 degrees C to 800 degrees C. It was found that the carbon aerogels derived from waste pomelo peels had excellent sorption ability for a variety of organic pollutants/oils and the sorption ability dropped slightly as the calcination temperature increased. In addition, the sorbent could be easily regenerated by simple physical treatments and kept a high sorption rate after five sorption-regeneration cycles. (C) 2017 Elsevier Inc. All rights reserved.
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