In order to improve the value of low grade attapulgite, the influence of sodium carbonate on the viscosity of the purified attapulgite was studied by sodium carbonate modification. Characterization analysis such as cation exchange capacity detecting, Zeta Potential, FT-IR, XRD, XRF, SEM and Nitrogen adsorption-desorption were used to investigate the physical-chemical properties of the attapulgite before and after the modification. Results showed that the modified attapulgite by sodium carbonate with concentration of 0.225wt% showed the highest viscosity. The ion exchange between sodium carbonate and Mg2+, Al3+, Ca2+ as well as surface charge variation was the main factor for the increase of viscosity.
XIONG Lian
,
HU An
,
HUANG Chao
,
GUO Hai-jun
,
ZHANG Hai-rong
,
CHEN Xue-fang
,
CHEN Xin-de
. Effects of Sodium Carbonate Modification on Physical and Chemical Properties of Attapulgite[J]. Advances in New and Renewable Energy, 2018
, 6(6)
: 533
-538
.
DOI: 10.3969/j.issn.2095-560X.2018.06.011
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