Adsorption isotherm and thermodynamic studies of As(III) removal from aqueous solutions using used cigarette filter ash

被引：27

作者：

Al-Salehin, Pezhman Zein ^{[1
]}

Moeinpour, Farid ^{[2
]}

Mohseni-Shahri, Fatemeh S. ^{[2
]}

机构：

[1] Islamic Azad Univ, Bandar Abbas Branch, Dept Water & Wastewater Engn, Bandar Abbas, Iran

[2] Islamic Azad Univ, Bandar Abbas Branch, Dept Chem, Bandar Abbas 7915893144, Iran

来源：

APPLIED WATER SCIENCE | 2019年 / 9卷 / 08期

关键词：

Used cigarette filter ash; As(III); Adsorption; Thermodynamics; ZERO-VALENT IRON; ARSENIC REMOVAL; NANOPARTICLES; KINETICS; WATER; BUTTS;

D O I：

10.1007/s13201-019-1059-9

中图分类号：

TV21 [水资源调查与水利规划];

学科分类号：

081501 ;

摘要：

In the present paper, used cigarette filter ash was prepared and used as an active adsorbent to remove As(III) ions from aqueous solutions. The prepared adsorbent structure was identified by scanning electron microscopy analysis, Brunauer-Emmett-Teller method and energy-dispersive X-ray spectroscopy analysis. The influence of contact time, pH, adsorbent dose and initial concentration of As(III) on the removal of As(III) was assessed. Several isotherm models were checked to illustrate the adsorption equilibrium. The adsorption equilibrium data adapted well with the Langmuir isotherm model. The maximum adsorption capacity of 33.33 mg/g was acquired from the Langmuir isotherm. The calculated thermodynamic variables verified that the adsorption process is spontaneous and endothermic.

引用

页数：8

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