A simple polyacrylamide gel route for the synthesis of MgAl2O4 nanoparticles with different metal sources as an efficient adsorbent: Neural network algorithm simulation, equilibrium, kinetics and thermodynamic studies

doi:10.1016/j.seppur.2021.119855

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	A simple polyacrylamide gel route for the synthesis of MgAl2O4 nanoparticles with different metal sources as an efficient adsorbent: Neural network algorithm simulation, equilibrium, kinetics and thermodynamic studies
	Liu, Hao 1,2; Wang, Shifa 1,2; Gao, Huajing 1,2,3; Yang, Hua 3; Wang, Fei 4; Chen, Xiping 5; Fang, Leiming 5; Tang, Shengnan 1,2; Yi, Zao 6; Li, Dengfeng 7
刊名	SEPARATION AND PURIFICATION TECHNOLOGY
	2022-01-15
卷号	281
关键词	MgAl2O4 nanoparticles Polyacrylamide gel method Metal salt Adsorption performance Synergistic effect
ISSN号	1383-5866
DOI	10.1016/j.seppur.2021.119855
英文摘要	The MgAl2O4 nanoparticles with different particle sizes prepared by a polyacrylamide gel method with different metal salts as raw materials which was used to study its efficiency as an adsorbent for removal of Congo red, acid orange 7 and acid fuchsin from wastewater. It was difficult to obtain pure MgAl2O4 nanoparticles with basic magnesium carbonate or aluminum acetate coupled with other metal salts. Based on the molecular weight, coordination number, ion radius and the number of water of crystallization for the metal salt and the phase purity of the target product, a neural network prediction model was established to predict the effect of synthesis parameters on the phase purity of MgAl2O4. The microstructure characterization confirmed that the minimum particle size of MgAl2O4 nanoparticles prepared with aluminum nitrate and magnesium sulfate as metal salts was about 22 nm, and the maximum particle size of MgAl2O4 nanoparticles prepared with aluminum nitrate and magnesium chloride as metal salts was about 50 nm. Adsorption experiments of MgAl2O4 nanoparticles were performed as a function of process parameters: various dyes including Congo red, acid orange 7 and acid fuchsin, adsorption time, particles size, initial dye concentration, initial adsorbent concentration, pH value and reaction temperature. The thermodynamic studies showed that the adsorption of MgAl2O4 nanoparticles for removal of Congo red from wastewater is an exothermic and spontaneous process. The maximum adsorption capacity of 89.043 mg/g for the MgAl2O4 nanoparticles was found at 1 g/L of initial adsorbent concentration, 100 mg/L of initial dye concentration, 6.9 of pH, and 299.8 K of temperature for removal of Congo red from wastewater. The adsorption of Congo red, acid orange 7 and acid fuchsin can be assigned to the synergistic effect of electrostatic interaction, pore filling and ion exchange. This present work provides a technical reference for the synthesis of other metal oxide nanoparticles using metal salts with different acid groups.
WOS研究方向	Engineering
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000707336400001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/154850]
专题	理学院设计艺术学院
作者单位	1.Chongqing Three Gorges Univ, Chongqing Key Lab Geol Environm Monitoring & Disa, Chongqing, Peoples R China; 2.Chongqing Three Gorges Univ, Sch Elect & Informat Engn, Chongqing 404000, Peoples R China; 3.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Non Ferrous Me, Lanzhou 730050, Peoples R China; 4.Sichuan Univ, Coll Mat Sci & Engn, Chengdu 610064, Peoples R China; 5.China Acad Engn Phys, Inst Nucl Phys & Chem, Mianyang 621900, Sichuan, Peoples R China; 6.Southwest Univ Sci & Technol, Joint Lab Extreme Condit Matter Properties, Mianyang 621010, Sichuan, Peoples R China; 7.Chongqing Univ Posts & Telecommun, Sch Sci, Chongqing 400065, Peoples R China
推荐引用方式 GB/T 7714	Liu, Hao,Wang, Shifa,Gao, Huajing,et al. A simple polyacrylamide gel route for the synthesis of MgAl2O4 nanoparticles with different metal sources as an efficient adsorbent: Neural network algorithm simulation, equilibrium, kinetics and thermodynamic studies[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2022,281.
APA	Liu, Hao.,Wang, Shifa.,Gao, Huajing.,Yang, Hua.,Wang, Fei.,...&Li, Dengfeng.(2022).A simple polyacrylamide gel route for the synthesis of MgAl2O4 nanoparticles with different metal sources as an efficient adsorbent: Neural network algorithm simulation, equilibrium, kinetics and thermodynamic studies.SEPARATION AND PURIFICATION TECHNOLOGY,281.
MLA	Liu, Hao,et al."A simple polyacrylamide gel route for the synthesis of MgAl2O4 nanoparticles with different metal sources as an efficient adsorbent: Neural network algorithm simulation, equilibrium, kinetics and thermodynamic studies".SEPARATION AND PURIFICATION TECHNOLOGY 281(2022).