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Study on improving cation-exchange capacity of bentonite by modifying(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2005年第03期
Page:
30-32
Research Field:
Publishing date:

Info

Title:
Study on improving cation-exchange capacity of bentonite by modifying
Author(s):
LI Meng-yaoWANG Li-pingCHE Hong-rong
School of Environmental Sciences and Engineering, Chang’ an University, Xi’ an 710054,China
Keywords:
bentonite modifying sodium chloride hexadecyltrimethyammonium bromide cation exchange capacity(CEC)
PACS:
P619.255
DOI:
-
Abstract:
This paper studied the cation-exchange capacity(CEC)of bentonites which have been treated with different meth- ods and different substances.The results indicate that the CEC can increase 30% when bentonite is heated at 450℃ for 2 h. In addition,CEC of bentonites treated with 0.01 mol L-1 NaCl or 0.3 mol L-1 CTMAB can increas 10%,but the CEC of bentonite treated with 0.1 mol L-1 HCl improves little. The mechanism of improving bentonite’ s CEC by modification were discussed and analysed in detail.

References:

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