Chem. J. Chinese Universities ›› 2016, Vol. 37 ›› Issue (2): 335.doi: 10.7503/cjcu20150544
• Physical Chemistry • Previous Articles Next Articles
WANG Huili1, ZHAO Yue2, MA Lekuan2, FAN Penghao1, XU Congbin1, JIAO Chunlei1, LIN Aijun1,*()
Received:
2015-07-14
Online:
2016-02-10
Published:
2016-01-06
Contact:
LIN Aijun
E-mail:ajlin@126.com
Supported by:
CLC Number:
TrendMD:
WANG Huili, ZHAO Yue, MA Lekuan, FAN Penghao, XU Congbin, JIAO Chunlei, LIN Aijun. Preparation of Composite Modified Expanded Graphite and Its Adsorption on Acid Brilliant Blue Dye†[J]. Chem. J. Chinese Universities, 2016, 37(2): 335.
Fig.1 Adsorption activities of M-EG&EG in the reduction of acid brilliant blue a. 11.662 mg/g CTAB; b. 17.493 mg/g CTAB; c. 5.831 mg/g CTAB; d. 11.662 mg/g without KBr; e. EG.
NaCl | NaOH | Pb(NO3)2 | |||
---|---|---|---|---|---|
Molar fraction(%) | Removal rate(%) | Molar fraction(%) | Removal rate(%) | c/(mg·L-1) | Removal rate(%) |
0 | 85.06 | 0 | 85.06 | 0 | 85.06 |
1 | 88.39 | 1 | 85.81 | 33.3 | 91.79 |
2 | 88.52 | 1.5 | 87.92 | 66.7 | 93.41 |
3 | 87.71 | 2 | 86.8 | 100 | 94.16 |
4 | 87.43 | 2.5 | 87.55 | 133.3 | 94.28 |
5 | 86.48 | 3 | 88.42 | 166.7 | 94.66 |
Table 1 Effects of metal compounds on reduction rate of acid brilliant blue
NaCl | NaOH | Pb(NO3)2 | |||
---|---|---|---|---|---|
Molar fraction(%) | Removal rate(%) | Molar fraction(%) | Removal rate(%) | c/(mg·L-1) | Removal rate(%) |
0 | 85.06 | 0 | 85.06 | 0 | 85.06 |
1 | 88.39 | 1 | 85.81 | 33.3 | 91.79 |
2 | 88.52 | 1.5 | 87.92 | 66.7 | 93.41 |
3 | 87.71 | 2 | 86.8 | 100 | 94.16 |
4 | 87.43 | 2.5 | 87.55 | 133.3 | 94.28 |
5 | 86.48 | 3 | 88.42 | 166.7 | 94.66 |
Adsorbent | Pseudo-first-order | Pseudo-second order | ||||
---|---|---|---|---|---|---|
Qe/(mg·g-1) | k1/h-1 | R2 | Qe/(mg·g-1) | k2/h-1 | R2 | |
M-EG | 67.69 | 0.4026 | 0.7049 | 71.43 | 0.3267 | 0.9976 |
EG | 62.18 | 0.0805 | 0.4626 | 66.22 | 0.1086 | 0.983 |
Table 2 Fitting parameters of kinetic equations for acid brilliant blue on M-EG
Adsorbent | Pseudo-first-order | Pseudo-second order | ||||
---|---|---|---|---|---|---|
Qe/(mg·g-1) | k1/h-1 | R2 | Qe/(mg·g-1) | k2/h-1 | R2 | |
M-EG | 67.69 | 0.4026 | 0.7049 | 71.43 | 0.3267 | 0.9976 |
EG | 62.18 | 0.0805 | 0.4626 | 66.22 | 0.1086 | 0.983 |
Adsorbent | Langmuir parameter | Freundlich parameter | ||||
---|---|---|---|---|---|---|
Qm/(mg·g-1) | b/(L·mg-1) | R2 | n | KF | R2 | |
M-EG | 526.32 | 0.0322 | 0.9785 | 1.9066 | 15.929 | 0.8311 |
EG | 100.00 | 0.0805 | 0.8142 | 2.9011 | 12.627 | 0.7708 |
Table 3 Isotherms constants for acid brilliant blue on M-EG
Adsorbent | Langmuir parameter | Freundlich parameter | ||||
---|---|---|---|---|---|---|
Qm/(mg·g-1) | b/(L·mg-1) | R2 | n | KF | R2 | |
M-EG | 526.32 | 0.0322 | 0.9785 | 1.9066 | 15.929 | 0.8311 |
EG | 100.00 | 0.0805 | 0.8142 | 2.9011 | 12.627 | 0.7708 |
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