Citation: LIU Hong-ying, HAO Guo-jun, ZHU Yu-xi, DU Qian-qian, ZHU Shu-quan. Effect of humic acid on equilibrium adsorption of water of Shengli lignite[J]. Journal of Fuel Chemistry and Technology, ;2016, 44(11): 1281-1286. shu

Effect of humic acid on equilibrium adsorption of water of Shengli lignite

School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China

Corresponding author: LIU Hong-ying, lhying@cumtb.edu.cn
Received Date: 13 June 2016
Revised Date: 29 July 2016

Figures(2)

The effect of humic acid, an important component of lignite, on the water content in Shengli lignite was studied. The content of oxygen containing functional groups of humic acid in Shengli lignite was determined. The isothermal adsorption and desorption curves of the lignite, brown humic acid and the residual coal were analyzed. Further the primary and secondary site adsorption of the lignite, brown humic acid and the residual coal were studied. The results show that 2/5 carboxyl and 1/5 hydroxyl in Shengli lignite are provided by humic acid. The pore size and pore volume of brown humic acid are smaller than those of the lignite. So brown humic acid is unfavorable for the formation of water clusters. The humic acid is adverse to equilibrium adsorption of water for Shengli lignite.
- lignite,
- humic acid,
- equilibrium adsorption of water,
- isothermal adsorption
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