Application of modificated magnetic nanomaterial for optimization of ultrasound-enhanced removal of Pb2+ ions from aqueous solution under experimental design: Investigation of kinetic and isotherm

被引：53
作者：
Dil, Ebrahim Alipanahpour [1 ]
Ghaedi, Mehrorang [1 ]
Asfaram, Arash [1 ]
Mehrabi, Fatemeh [2 ]
机构：
[1] Univ Yasuj, Dept Chem, Yasuj 7591435, Iran
[2] Islamic Azad Univ, Gachsaran Branch, Dept Chem, Gachsaran, Iran
来源：
ULTRASONICS SONOCHEMISTRY | 2017年 / 36卷
关键词：
Bis(5-bromosalicylidene)-1,3-propandiamine; Central composite design; Magnetic gamma-Fe2O3 nanoparticles; Pb2+ ions; Ultrasound-assisted removal; RESPONSE-SURFACE METHODOLOGY; ARTIFICIAL NEURAL-NETWORK; CENTRAL COMPOSITE DESIGN; ACTIVATED CARBON OPTIMIZATION; HEAVY-METAL REMOVAL; EFFICIENT REMOVAL; DERIVATIVE SPECTROPHOTOMETRY; GAMMA-FE2O3; NANOPARTICLES; MESOPOROUS SILICA; MALACHITE GREEN;
D O I：
10.1016/j.ultsonch.2016.12.016
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
Magnetic gamma-Fe2O3 nanoparticles modificated by bis(5-bromosalicylidene)-1,3-propandiamine (M-gamma-Fe2O3-NPs-BBSPN) and characterized by field emission scanning electron microscopy (FE-SEM), Fourier transforms infrared spectroscopy (FT-IR) and X-ray diffraction (XRD). This modified compound as novel adsorbent was applied for the ultrasound -assisted removal of Pb2+ ion in combination with flame atomic absorption spectroscopy (FAAS). The influences of the effective parameters including initial Pb2+ ion concentration, pH, adsorbent mass and ultrasound time were optimized by central composite design (CCD). Maximum removal percentage of Pb2+ ion which obtained at 25 mg L-1 of Pb2+, 25 mg of adsorbent and 4 min mixing with sonication at pH 6.0. The precision of the equation obtained by CCD was confirmed by the analysis of variance and calculation of correlation coefficient relating the predicted and the experimental values of removal percentage of Pb2+ ion. The kinetic and isotherm of ultrasound-assisted removal of Pb2+ ion was well described by second-order kinetic and Langmuir isotherm model with maximum adsorption capacity of 163.57 mg g(-1). (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：409 / 419
页数：11
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