期刊
WATER SCIENCE AND TECHNOLOGY
卷 77, 期 5, 页码 1303-1312出版社
IWA PUBLISHING
DOI: 10.2166/wst.2018.003
关键词
adsorption; biochar adsorbent; chicken manure; pyrolysis
资金
- crossing research project of School of Environmental Science & Technology, Dalian University of Technology [HX20160605]
In this work, the biochar adsorbent carboxymethyl cellulose (CMC), was prepared from the pyrolysis (600 degrees C, 120 min) of chicken manure for the removal of methyl orange (MO) from aqueous solution, and its physicochemical properties were characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectra (FTIR). The experimental parameters including agitation speed, initial solution pH, biochar dosage and contact time on the adsorption properties of MO from aqueous solution onto CMC were investigated in batch experiments. The kinetic adsorption of different initial concentration could be accurately described by the pseudo-second-order model and the overall rate process was apparently influenced by external mass transfer and intra-particle diffusion. Furthermore, the Langmuir isotherm model showed a better fit with equilibrium data (R-2 > 0.99), with the maximum adsorption capacity of 39.47 mg.g(-1) at 25 degrees C. Moreover, the thermodynamic parameters indicated that the adsorption of MO onto CMC was a spontaneous and endothermic process. The results of this study indicated that CMC could be used as a promising biomass adsorbent material for aqueous solutions containing MO.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据