文献类型：期刊文献

英文题名：Adsorption of acid orange 7 in aqueous solution by biochar from peanut shell supported with clay mineral kaolinite

作者：Huang, Keyuan[1]; Li, Wangying[1]; Wang, Yue[1]; Liu, Bin[1]; Xu, Ruolin[1]; Dai, Jing[1]; Zheng, Xitong[1]; Yang, Ningcan[1]; Qiu, Muqing[1]; Han, Li[1]

机构：[1] College of Life Science, Shaoxing University, Shaoxing, 312000, China

年份：2020

卷号：19

期号：4

起止页码：1657

外文期刊名：Nature Environment and Pollution Technology

收录：EI(收录号：20205309698796)、Scopus(收录号：2-s2.0-85098118615)

基金：This work is supported by the financial support from the research fund program of national Nature Science Foundation of China (No. 21876115).

语种：英文

外文关键词：Citrus fruits - Fourier transform infrared spectroscopy - High resolution transmission electron microscopy - Isotherms - Kaolinite - Monolayers - Oilseeds - Scanning electron microscopy - Spectrometers

外文摘要：Biochar was prepared from the peanut shell. Then, it was mixed with the clay mineral kaolinite and stirred under the magnetic stirrer. The biochar derived from peanut shell supported with clay mineral kaolinite (B@K) was obtained. Adsorption experiments of dye Acid Orange 7 by B@K were conducted. The characteristics of B@K were determined by the elemental analyzer, specific surface area meter, scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectrometer and the model axis-HS. The experimental results showed that a large number of oxygen-containing functional groups appear on the surface of B@K, which is beneficial for binding dye ions. The adsorption process fits well with the pseudo-second-order kinetic model. It indicated that the adsorption process was both physical adsorption and chemical adsorption. Chemical adsorption is the main adsorption process. Langmuir isotherm model can better describe the adsorption isothermal process of B@K on dye Acid Orange 7. The adsorption process is monolayer adsorption process. ? 2020 Technoscience Publications. All rights reserved.