Effect of Temperature on Dissolution of Fine Lignite
[1]Xing Longjie Huang Yanfang Wang Wenjuan Han Guihong Liu Jiongtian.Effect of Temperature on Dissolution of Fine Lignite[J].Journal of Zhengzhou University (Engineering Science),2017,38(03):20-24.[doi:10.13705/j.issn.1671-6833.2016.06.004]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
38
Number of periods:
2017 03
Page number:
20-24
Column:
Public date:
2017-05-28
- Title:
- Effect of Temperature on Dissolution of Fine Lignite
- CLC:
- -
- Abstract:
- In order to make use of lignite,the dissolution of HA in lignite with the change of soaking temperature,and the content of total acid group,hydrophilieity and charge of lignite surface after dissolution was investigated.The result showed that the capacity of dissolution of HA in lignited increased with the increase of soaking time and temperature.When soaking temperature was 50 ℃,soaking time 2 h,the capacity of HA was 15.636 mg/L.The analysis of FTIR was used.And the lignite after dissolution was characterized.The total acid groups,contact angle and zeta-potential of lignite after dissolution were determined.This research showed that the oxygen-containing functional groups of lignite after dissolution decreased from 2.768 mmol/g to 2.431 mmol/g,the contact angle increased from 100.75° to 105.33°;and the Zeta-potential increased from-49.01 mV to-46.14 mV with the increase of temperature.
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