Citation: Wang Junmin, Feng Tao, Hu Yandi, Tang Ranxiao. Study on the Adsorptive Property of Corncob Powder for Neutral Red[J]. Chemistry, ;2016, 79(10): 981-985. shu

Study on the Adsorptive Property of Corncob Powder for Neutral Red

Wang Junmin ¹ ,
Feng Tao ¹ ,
Hu Yandi ² ,
Tang Ranxiao ^1,,

1.
1. College of Science, Agricultural University of Hebei, Baoding 071001;
2.
2. Department of Civil & Environmental Engineering, University of Houston, Houston 77204, USA

Corresponding author: Tang Ranxiao,
Received Date: 6 March 2016
Available Online: 18 May 2016
Fund Project:

The adsorption property of corncob powder for different dyes was studied, and the results showed that the cationic dyes can be effectively adsorbed on the corncob powder. The effects of adsorbent dosage, pH, concentration and temperature of the solution on the adsorption of neutral red were investigated. The resultant kinetic data were well fitted by the pseudo-second-order kinetics model. At different temperatures, the adsorption process was in accordance with both the Langmiur isotherm mode and the Freundlich isotherm mode, the value of q_max and K_F were little influenced by the temperature. The result of Dubinin-Radushkevich isotherm fitting showed that the adsorption is mainly a chemical adsorption. The thermodynamics study indicated that the adsorption of neutral red on the corncob powder was spontaneous and exothermic. The existence of other electrolyte was not conducive to the adsorption.
- Corncob powder,
- Adsorption,
- Cationic dye,
- Kinetics,
- Thermodynamics
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