Response surface optimization of nitrite removal from aqueous solution by Fe3O4 stabilized zero-valent iron nanoparticles using a three-factor, three-level Box-Behnken design

被引:20
作者
Singh, Arun K. [1 ,2 ]
Singh, Kunwar P. [1 ,2 ]
机构
[1] Acad Sci & Innovat Res, Anusandhan Bhawan, Rafi Marg, New Delhi 110001, India
[2] CSIR Indian Inst Toxicol Res, Div Environm Chem, POB 80,Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
关键词
Zero-valent iron nanoparticles; NO2-; removal; Box-Behnken design; Response surface methodology; Regression analysis; WASTE-WATER; CHROMIUM VI; NANOSCALE; REDUCTION; NANOCOMPOSITES; DECHLORINATION; REMEDIATION; REACTIVITY; PARTICLES; TRANSPORT;
D O I
10.1007/s11164-015-2147-6
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The magnetite (Fe3O4) stabilized zero-valent iron nanoparticles (Fe3O4-ZVINPs) were synthesized and characterized by TEM, SEM, BET, and XRD techniques and used for removal of NO (2) (-) from aqueous solution. Response surface methodology (RSM) combined with a three-level, three-variable, Box-Behnken design was used to optimize the individual and interactive effects of three different experimentally controlled factors like pH, temperature, and Fe3O4-ZVINPs dose on removal efficiency. The RSM uses a second-order polynomial quadratic model (SOPM) for predicting the optimum point. The analysis of variance has been employed to evaluate the significance of the polynomial model for predicting the optimal conditions of independent process variables to get maximum removal efficiency. Three-dimensional (3D) response surface plots were constructed to visualize the simultaneous interactive effects between two process variables. Regression analysis showed a good fit of the experimental data to the SOPM with a coefficient of determination (R (2)) of 0.993 and Fisher F-value of 82.27. All the three factors had a significant impact on removal of NO (2) (-) . The predicted value of model (94.54 mg g(-1)) was in good agreement with experimental value (93.78 mg g(-1)) under the optimum conditions of temperature 49.6 A degrees C; pH 4; and dose 0.4 g L-1. The study demonstrated that Fe3O4 in combination with ZVINPs significantly accelerated the NO (2) (-) removal. The removal of NO (2) (-) from synthetic ground water was also investigated at optimum conditions to assess the effect of the other competing ions. The results of the study indicate that Fe3O4-ZVINPs have promising potential to cleanup NO (2) (-) from contaminated water.
引用
收藏
页码:2247 / 2265
页数:19
相关论文
共 26 条
[1]   Advances in water treatment by adsorption technology [J].
Ali, Imran ;
Gupta, V. K. .
NATURE PROTOCOLS, 2006, 1 (06) :2661-2667
[2]   Reductive removal of Cr(VI) by starch-stabilized Fe0 nanoparticles in aqueous solution [J].
Alidokht, L. ;
Khataee, A. R. ;
Reyhanitabar, A. ;
Oustan, S. .
DESALINATION, 2011, 270 (1-3) :105-110
[3]   Application of Central Composite Design approach for removal of chromium (VI) from aqueous solution using weakly anionic resin: Modeling, optimization, and study of interactive variables [J].
Bajpai, Shailendra ;
Gupta, S. K. ;
Dey, Apurba ;
Jha, M. K. ;
Bajpai, Vidushi ;
Joshi, Saurabh ;
Gupta, Arvind .
JOURNAL OF HAZARDOUS MATERIALS, 2012, 227 :436-444
[4]   Kaolin-supported nanoscale zero-valent iron for removing cationic dye-crystal violet in aqueous solution [J].
Chen, Zheng-xian ;
Cheng, Ying ;
Chen, Zuliang ;
Megharaj, Mallavarapu ;
Naidu, Ravendra .
JOURNAL OF NANOPARTICLE RESEARCH, 2012, 14 (08)
[5]   Kinetics of reductive denitrification by nanoscale zero-valent iron [J].
Choe, S ;
Chang, YY ;
Hwang, KY ;
Khim, J .
CHEMOSPHERE, 2000, 41 (08) :1307-1311
[6]   Magnetite and zero-valent iron nanoparticles for the remediation of uranium contaminated environmental water [J].
Crane, R. A. ;
Dickinson, M. ;
Popescu, I. C. ;
Scott, T. B. .
WATER RESEARCH, 2011, 45 (09) :2931-2942
[7]   Nitrate and nitrite reduction by Fe0:: Influence of mass transport, temperature, and denitrifying microbes [J].
Ginner, JL ;
Alvarez, PJJ ;
Smith, SL ;
Scherer, MM .
ENVIRONMENTAL ENGINEERING SCIENCE, 2004, 21 (02) :219-229
[8]   Stabilization of Fe-Pd nanoparticles with sodium carboxymethyl cellulose for enhanced transport and dechlorination of trichloroethylene in soil and groundwater [J].
He, Feng ;
Zhao, Dongye ;
Liu, Juncheng ;
Roberts, Christopher B. .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2007, 46 (01) :29-34
[9]   Reduction of Nitrite by Ultrasound-Dispersed Nanoscale Zero-Valent Iron Particles [J].
Liang, Feng ;
Fan, Jing ;
Guo, Yanhui ;
Fan, Maohong ;
Wang, Jianji ;
Yang, Hongqun .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2008, 47 (22) :8550-8554
[10]   Electrochemical removal of nitrite and ammonia for aquaculture [J].
Lin, SH ;
Wu, CL .
WATER RESEARCH, 1996, 30 (03) :715-721