Thermodynamic study of some basic dyes adsorption from aqueous solutions on activated carbon and new correlations

被引：22
|
作者：
Gopinathan, R. [1 ]
Bhowal, Avijit [2 ]
Garlapati, Chandrasekhar [1 ]
机构：
[1] Pondicherry Engn Coll, Dept Chem Engn, Pondicherry 605104, India
[2] Jadavpur Univ, Dept Chem Engn, Kolkata 700032, India
来源：
JOURNAL OF CHEMICAL THERMODYNAMICS | 2017年 / 107卷
关键词：
Basic dyes; Malachite green oxalate; New adsorption model; Safranine O; Sorbate melting temperature; RICE HUSK ASH; FATTY-ACIDS; REMOVAL; EQUILIBRIUM; KINETICS; MODEL; SOLUBILITY; MECHANISM; ISOTHERM; SORPTION;
D O I：
10.1016/j.jct.2016.12.031
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The adsorption behaviour of safranine O and malachite green oxalate dyes on activated carbon as a function of temperature for a fixed initial concentration was investigated at T = (303, 313 and 323) K and p = 0.1 MPa through adsorption isotherms and their thermodynamic parameters Delta G degrees, Delta H degrees and Delta S degrees. The isotherms were correlated with a new model based on the principle of phase equilibrium. The new model equation comprising of 4 adjustable parameters correlates the isotherms as a function of temperature, sorbate melting temperature. The overall deviation between the experimental and the correlated results was less than 6.85% in averaged absolute relative deviation (AARD). (c) 2017 Elsevier Ltd.
引用
收藏
页码：182 / 188
页数：7
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