自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

您目前所在的位置:首页 - 期刊简介 - 详细页面

中南大学学报(英文版)

Journal of Central South University

Vol. 24    No. 1    January 2017

[PDF Download]    [Flash Online]

    

Adsorption of residual amine collector HAY from aqueous solution by refined carbon from coal fly ash and activated carbon
LI Xian-bo(李显波)1, 2, 3, YE Jun-jian(叶军建)2, 3, 4, QIU Yue-qin(邱跃琴)2, 3, 4, LI Long-jiang(李龙江)2, 3, 4,MAO Song(卯松)2, 3, 4, LIU Zhi-hong(刘志红)2, 3, 4, ZHANG Qin(张覃)2, 3, 4

1. College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China;
2. Mining College, Guizhou University, Guiyang 550025, China;
3. National & Local Joint Laboratory of Engineering for Effective Utilization of
Regional Mineral Resources from Karst Areas, Guizhou University, Guiyang 550025, China;
4. Guizhou Key Lab of Comprehensive Utilization of Non-metallic Mineral Resources,
Guizhou University, Guiyang 550025, China

Abstract:Refined carbon (RC) derived from coal fly ash (CFA) as well as powdered activated carbon (PAC) was investigated as adsorbent to remove residual amine collector HAY from aqueous solution. The RC and PAC were characterized by scanning electron microscopy (SEM), surface area measurement, Zeta potential measurement and Fourier transform infrared (FTIR) spectroscopy. The effect factors and mechanisms of HAY adsorption onto RC and PAC were studied in detail. The results show that the experimental kinetic data agree well with the pseudo second-order equation, and the Langmuir isotherm model is found to be more appropriate to explicate the experimental equilibrium isotherm results than the Freundlich model. The adsorption capacities of PAC and RC increase with pH. It is found that alkaline condition is conducive to the adsorption of HAY onto PAC and RC and the adsorption efficiency of RC is close to PAC at pH near 11. Zeta potential variation of adsorbents suggests that HAY generates electrostatic adsorption onto RC and PAC. FTIR analysis shows that the adsorption is dominantly of a physical process. The Box-Behnken design optimization conditions of process are RC 1 g/L, pH 11, temperature 302 K and initial HAY concentration 100 mg/L. Under these conditions, the measured adsorption ratio and adsorption capacity are 87.91% and 87.91 mg/g, respectively. Thus, the RC is considered to be a potential adsorbent for the removal of residual amine from aqueous solution.

 

Key words: powdered activated carbon; coal fly ash; refined carbon; adsorption; amine collector HAY

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
版权所有:《中南大学学报(自然科学版、英文版)》编辑部
地 址:湖南省长沙市中南大学 邮编: 410083
电 话: 0731-88879765(中) 88836963(英) 传真: 0731-88877727
电子邮箱:zngdxb@csu.edu.cn 湘ICP备09001153号