Biosorption of U(VI) from Aqueous Solution by Chlorella vulgaris: Equilibrium, Kinetic, and Thermodynamic Studies

被引:43
作者
Amini, Malihe [1 ]
Younesi, Habibollah [1 ]
Bahramifar, Nader [2 ]
机构
[1] Tarbiat Modares Univ, Dept Environm Sci, Fac Nat Resources, POB 64414-356, Noor, Iran
[2] Payame Noor Univ, Dept Chem, Tehran, Iran
关键词
U(VI); Chlorella vulgaris; Biosorption; Isotherms and kinetics; Thermodynamics; RESPONSE-SURFACE METHODOLOGY; HEAVY-METAL BIOSORPTION; CHLORRELA-VULGARIS; CADMIUM BIOSORPTION; WASTE-WATER; REMOVAL; URANIUM; BIOMASS; IONS; OPTIMIZATION;
D O I
10.1061/(ASCE)EE.1943-7870.0000651
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
In this study, the mechanism involved in the removal of U(VI) from aqueous solution by the green unicellular microalgae, Chlorella vulgaris, was examined through a series of batch experiments. The effect of various operation parameters such as solution pH, biomass dose, temperature, and different concentrations of U(VI) on the uptake capacity and removal efficiency of C. vulgaris was evaluated. The adsorption process could be defined well by both the Langmuir and Freundlich isotherms with R-2 of 0.99 and 0.97, respectively. The kinetic data were fitted to a pseudo second-order model with the R-2 value of 0.99. The thermodynamic equilibrium parameters obtained at different temperatures were used to evaluate the thermodynamic constants, Delta G degrees, Delta H degrees, and Delta S degrees. The negative value of Gibbs free energy, Delta G degrees, demonstrated the endothermic nature of the biosorption process. The adsorption-desorption cycle results demonstrated that this species of algae can be regenerated using 1 M of HCl. The recovery yield of U(VI) ions was found to be 90%, and the biosorption had good reusability after four consecutive adsorption-desorption cycles. The biosorption of U(VI) was found to be adversely affected also by the presence of Al(III) cations, whereas other ions seemed to have negligible effect on the process. The results suggested that C. vulgaris biomass is suitable as a sorbent materials for recovery and biosorption of U(VI) ions from aqueous solution. DOI: 10.1061/(ASCE)EE.19437870.0000651. (C) 2013 American Society of Civil Engineers.
引用
收藏
页码:410 / 421
页数:12
相关论文
共 58 条
[1]   Removal and recovery of uranium from aqueous solutions by Trichoderma harzianum [J].
Akhtar, Kalsoom ;
Akhtar, M. Waheed ;
Khalid, Ahmad M. .
WATER RESEARCH, 2007, 41 (06) :1366-1378
[2]   Application of biosorption for the removal of organic pollutants: A review [J].
Aksu, Z .
PROCESS BIOCHEMISTRY, 2005, 40 (3-4) :997-1026
[3]   Binary biosorption of cadmium(II) and nickel(II) onto dried Chlorella vulgaris:: Co-ion effect on mono-component isotherm parameters [J].
Aksu, Z ;
Dönmez, G .
PROCESS BIOCHEMISTRY, 2006, 41 (04) :860-868
[4]   Determination of the equilibrium, kinetic and thermodynamic parameters of the batch biosorption of nickel(II) ions onto Chlorella vulgaris [J].
Aksu, Z .
PROCESS BIOCHEMISTRY, 2002, 38 (01) :89-99
[5]   Equilibrium and kinetic modelling of cadmium(II) biosorption by C-vulgaris in a batch system:: effect of temperature [J].
Aksu, Z .
SEPARATION AND PURIFICATION TECHNOLOGY, 2001, 21 (03) :285-294
[6]   A single-staged bioseparation process for simultaneous removal of copper(II) and chromium(VI) by using C-vulgaris [J].
Aksu, Z ;
Açikel, Ü .
PROCESS BIOCHEMISTRY, 1999, 34 (6-7) :589-599
[7]   Biosorption of copper on Chlorella vulgaris from single, binary and ternary metal aqueous solutions [J].
Al-Rub, FAA ;
El-Naas, MH ;
Ashour, I ;
Al-Marzouqi, M .
PROCESS BIOCHEMISTRY, 2006, 41 (02) :457-464
[8]   Biosorption of Cd(II), Ni(II) and Pb(II) from Aqueous Solution by Dried Biomass of Aspergillus niger: Application of Response Surface Methodology to the Optimization of Process Parameters [J].
Amini, Malihe ;
Younesi, Habibollah .
CLEAN-SOIL AIR WATER, 2009, 37 (10) :776-786
[9]   Statistical modeling and optimization of the cadmium biosorption process in an aqueous solution using Aspergillus niger [J].
Amini, Malihe ;
Younesi, Habibollah ;
Bahramifar, Nader .
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2009, 337 (1-3) :67-73
[10]   Biosorption of nickel(II) from aqueous solution by Aspergillus niger: Response surface methodology and isotherm study [J].
Amini, Malihe ;
Younesi, Habibollah ;
Bahramifar, Nader .
CHEMOSPHERE, 2009, 75 (11) :1483-1491