All Issue

2020 Vol.30, Issue 9 Preview Page
Removal of Heavy Metals from Wastewater using α-Fe2O3 Nanocrystals
Bulgan Tsedenbal1
,
Ji Eun Lee1
,
Seok Hwan Huh2
,
Bon Heun Koo1
,
Chan Gyu Lee1†
1School of Materials Science and Engineering, Changwon National University, Changwon, Gyeongnam 51140, Republic of Korea
2School of Mechatronics Convergence Engineerings, Changwon National University, Changwon, Gyeongnam 51140, Republic of Korea
†Corresponding author E-Mail : chglee1225@gmail.com (C. G. Lee, Changwon Nat'l Univ.)
September 2020. pp. 447-452
PDF XML Citation
Abstract

In this work, α-Fe2O3 nanocrystals are synthesized by co-precipitation method and used as adsorbent to remove Cr6+, Cd2+, and Pb2+ from wastewater at room temperature. The prepared sample is evaluated by XRD, BET surface area, and FESEM for structural and morphological characteristics. XRD patterns confirm the formation of a pure hematite structure of average particle size of ~ 40 nm, which is further supported by the FESEM images of the nanocrystals. The nanocrystals are found to have BET specific surface area of ~ 39.18 m2 g−1. Adsorption experiments are carried out for the different values of pH of the solutions, contact time, and initial concentration of metal ions. High efficiency Cr6+, Cd2+, and Pb2+ removal occur at pH 3, 7, and 5.5, respectively. Equilibrium study reveals that the heavy metal ion adsorption of the α-Fe2O3 nanocrystals followed Langmuir and Freundlich isotherm models. The Cr6+, Cd2+, and Pb2+ adsorption equilibrium data are best fitted to the Langmuir model. The maximum adsorption capacities of α-Fe2O3 nanocrystals related to Cr6+, Cd2+, and Pb2+ are found to be 15.15, 11.63, and 20 mg g−1, respectively. These results clearly suggest that the synthesized α-Fe2O3 nanocrystals can be considered as potential nano-adsorbents for future environmental and health related applications.

Keywords
α-Fe2O3 nanocrystals
heavy metal
adsorption
isotherm model
References
1.
K. M. S. Surchi, Int. J. Chem., 3, 103 (2011). 10.5539/ijc.v3n3p103
2.
F. Rozada, M. Otero, A. Moran and A. I. Garsia, Bioresour. Technol., 99, 6332 (2008). 10.1016/j.biortech.2007.12.01518234495
3.
Y. Bagbi, A. Sarswat, D. Mohan, A. Pandey and P. R. Solanki, Sci. Rep., 7, 1 (2017). 10.1038/s41598-017-03380-x28794435PMC5550514
4.
P. Yuan, D. Liu, M. Fan, D. Yang, R. Zhu, F. Ge, J. Zhu and H. He, J. Hazard. Mater., 173, 614 (2010). 10.1016/j.jhazmat.2009.08.12919748178
5.
M. A. Ahmed, S. M. Ali, S. I. El-Dek and A. Galal, Mater. Sci. Eng., B, 178, 744 (2013). 10.1016/j.mseb.2013.03.011
6.
V. M. Boddu, K. Abburi, J. L. Talbott and E. D. Smith, Environ. Sci. Technol. Lett., 37, 4449 (2003). 10.1021/es021013a14572099
7.
J. T. Mayo, C. Yavuz, S. Yean, L. Cong, H. Shiple, W. Yu, J. Falkner, A. Kan, M. Tomson and V. L. Colvin, Sci. Technol. Adv. Mater., 8, 71 (2007). 10.1016/j.stam.2006.10.005
8.
Z. Elouear, J. Bouzid, N. Boujelben, M. Feki, F. Jamoussi and A. Montiel, J. Hazard. Mater., 156, 412 (2008). 10.1016/j.jhazmat.2007.12.03618242833
9.
G. Vijayakumar, R. Tamilarasan and M. Dharmendirakumar, J. Mater. Environ. Sci., 3, 157 (2012).
10.
W. Jiang, M. Pelaez, D. D. Dionysiou, M. H. Entezari, D. Tsoutsou and K. O’Shea, Chem. Eng. J., 222, 527 (2013). 10.1016/j.cej.2013.02.049
11.
H. Karami, Chem. Eng. J., 219, 209 (2013). 10.1016/j.cej.2013.01.022
12.
X. L. Fang, C. Chen, M. S. Jin, Q. Kuang, Z. X. Xie, S. Y. Xie, R.B. Huang and L. S. Zheng, J. Mater. Chem., 19, 6154 (2009). 10.1039/b905034e
13.
S. Rajput, C. U. Pittman Jr and D. Mohan, J. Colloid Interface Sci., 468, 334 (2016). 10.1016/j.jcis.2015.12.00826859095
14.
Y. F. Shen, J. Tang, Z. H. Nie, Y. D. Wang, Y. Ren and L. Zuo, Sep. Purif. Technol., 68, 312 (2009). 10.1016/j.seppur.2009.05.020
15.
A. Roy, J. Bhattacharya, Chem. Eng. J., 211-212, 493 (2012). 10.1016/j.cej.2012.09.097
16.
X. L. Cheng, J. S. Jiang, C. Y. Jin, C. C. Lin, Y. Zeng and Q. H. Zhang, Chem. Eng. J., 236, 139 (2014). 10.1016/j.cej.2013.09.089
17.
H. Liang, B. Xu and Z. Wang, Mater. Chem. Phys., 141, 727 (2013). 10.1016/j.matchemphys.2013.05.070
18.
B. Tsedenbal, M. S. Anwar, I. Hussain and B. H. Koo, J. Nanosci. Nanotechnol., 17, 7682 (2017). 10.1166/jnn.2017.14800
19.
S. Mahdavi, M. Jalali and A. Afkhami, J. Nanopart. Res. 14, 846 (2012). 10.1007/s11051-012-0846-0
20.
B. E. Reed, M. R. Matsumoto, Sep. Sci. Technol., 28, 2179 (1993). 10.1080/01496399308016742
21.
L. Giraldo, A. Erto and J. C. Moreno-Pirajan, Adsorption, 19, 465 (2013). 10.1007/s10450-012-9468-1
22.
D. Fialova, M. Kremplova, L. Melichar, P. Kopel, D. Hynek, V. Adam and R. Kizek, Materials, 7, 2242 (2014). 10.3390/ma703224228788566PMC5453251
23.
D. He, Y. Xiao, D. Liang, H. Zhou, L. Du and L. Liu, Mater. Sci. Appl., 2, 215 (2011).
24.
S. Zeng, K. Tang, T. Li, Z. Liang, D. Wang, Y. Wang and W. Zhou, J. Phys. Chem. C, 111, 10217 (2007). 10.1021/jp0719661
Information
  • Publisher :Materials Research Society of Korea
  • Publisher(Ko) :한국재료학회
  • Journal Title :Korean Journal of Materials Research
  • Journal Title(Ko) :한국재료학회지
  • Volume : 30
  • No :9
  • Pages :447-452
  • Received Date : 2020-06-26
  • Revised Date : 2020-07-29
  • Accepted Date : 2020-08-21
  • DOI :https://doi.org/10.3740/MRSK.2020.30.9.447
Journal Informaiton Korean Journal of Materials Research Korean Journal of Materials Research
Online Submission
  • scopus
  • NRF
  • KOFST
  • crossref crossmark
  • crossref cited-by
  • crosscheck
  • open access
  • ccl
Journal Informaiton Journal Informaiton - close