Document Type: Original Articles

Authors

1 Department of Environmental Health, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran;

2 Department of Environmental Health Engineering, Shiraz University of Medical Sciences, Shiraz, Iran

Abstract

Background: Contamination of water with arsenic has attracted the researchers’ attention as a global problem in recent years and has been observed in some parts of Iran. The purpose of this study is to assess the efficiency of welding iron waste in removing arsenic from aqueous solutions. Methods: In this study, the effects of different parameters, such as pH (3-9), initial concentration of arsenic (100-3000 μg/l), contact time (5-90min) and adsorbent dose (2.5-20 g/l), were studied. The final concentrations of arsenic were analyzed by atomic absorption. Results: The results indicated that at pH=3 and fixed dose of 1 g, arsenic removal efficiency of iron waste was 89.73%. By increasing the pH to 7, the removal efficiency increased to 96.44%. Also, an increase in the amount of iron waste from 2.5 to 10g/l, the removal rate increased from about 42.37% to 96.70%. For contact times of 5 and 30 minutes, the removal rate was 9% and 96.62%, respectively. Then, with increasing the contact time to 90 minutes, the removal rate increased to 99.24%. Correlation coefficient of Freundlich and Langmuir isotherms for As(III) was 0.7593 and 0.9979, respectively . Conclusion: The results of the study showed that welding iron waste has a high potential as an effective, fast and cheap method for removal of arsenate and arsenite from aqueous solutions.

Keywords

  1. Sabbatini P, Rossi F, Thern G, Marajofsky A, de
  2. Cortalezzi M. Iron oxide adsorbers for arsenic
  3. removal: a low cost treatment for rural areas and mobile
  4. applications. Desalination 2009; 248(1): 184-92.
  5. Shih M-C. An overview of arsenic removal by pressuredrivenmembrane
  6. processes. Desalination 2005; 172(1):
  7. -97.
  8. Boddu VM, Abburi K, Talbott JL, Smith ED, Haasch R.
  9. Removal of arsenic (III) and arsenic (V) from aqueous
  10. medium using chitosan-coated biosorbent. Water Res
  11. ; 42(3): 633-42.
  12. Hussam A, Habibuddowla M, Alauddin M, Hossain Z,
  13. Munir A, Khan A. Chemical fate of arsenic and other
  14. metals in groundwater of Bangladesh: Experimental
  15. measurement and chemical equilibrium model. Journal
  16. of Environmental Science and Health, Part A 2003;
  17. (1): 71-86.
  18. Kanel SR, Manning B, Charlet L, Choi H. Removal
  19. of arsenic (III) from groundwater by nanoscale zerovalent
  20. iron. Environ Sci Technol 2005; 39(5): 1291-8.
  21. Rahmani A, Ghaffari H, Samadi M. Removal of
  22. arsenic (III) from contaminated water by synthetic
  23. nano size zerovalent iron. World Academy of Science,
  24. Engineering and Technology 2010; 38: 737-40.
  25. Kanel SR, Greneche J-M, Choi H. Arsenic (V) removal
  26. from groundwater using nano scale zero-valent iron as a
  27. colloidal reactive barriermaterial. Environ Sci Technol
  28. ; 40(6): 2045-50.
  29. Barati A, Maleki A, Alasvand M. Multi-trace elements
  30. level in drinking water and the prevalence of multichronic
  31. arsenical poisoning in residents in the west
  32. area of Iran. Sci Total Environ 2010; 408(7): 1523-9.
  33. Cornejo L, Lienqueo H, Arenas M, Acarapi J, Contreras
  34. D, Yanez J, et al. In field arsenic removal from natural
  35. water by zero-valent iron assisted by solar radiation.
  36. Environ Pollut 2008; 156(3): 827-31.
  37. Sharma B, Bose P. Arsenic sequestration by metallic
  38. iron under strongly reducing conditions. Current
  39. Science-Bangalore 2006; 91(2): 204-8.
  40. Li X-q, Elliott DW, Zhang W-x. Zero-valent iron
  41. nanoparticles for abatement of environmental
  42. pollutants: materials and engineering aspects. Critical
  43. Reviews in Solid State and Materials Sciences 2006;
  44. (4): 111-22.
  45. Gu Z, Fang J, Deng B. Preparation and evaluation of
  46. GAC-based iron-containing adsorbents for arsenic
  47. removal. Environ Sci Technol 2005.3833-43 :)10(39 ;
  48. Junyapoon S. Use of zero-valent iron for wastewater
  49. treatment. Journal of KMITL Sci Tech 2005; 5(3):
  50. -95.
  51. Huber DL. Synthesis, properties, and applications of
  52. iron nanoparticles. Small 2005; 1(5): 482-501.
  53. Henke K. Arsenic: environmental chemistry, health
  54. threats and waste treatment: John Wiley & Sons; 2009.
  55. Pokhrel D, Viraraghavan T. Arsenic removal from an
  56. aqueous solution by a modified fungal biomass. Water
  57. Res 2006; 40(3): 549-52.
  58. Deschamps E, Ciminelli VS , Höll WH. Removal of
  59. As (III) and As (V) from water using a natural Fe and
  60. Mn enriched sample. Water Res 2005; 39(20): 5212-20.
  61. Sperlich A, Werner A, Genz A, Amy G, Worch E,
  62. Jekel M. Breakthrough behavior of granular ferric
  63. hydroxide (GFH) fixed-bed adsorption filters: modeling
  64. and experimental approaches. Water Res 2005; 39(6):
  65. -8.
  66. Mahvi A, Rahmani Boldaji M, Dobaradaran S.
  67. Performance evaluation of fluoride resin particiles of
  68. iron in water. J of Water and Wastewater 2010; 76: 3-40.
  69. Ramaswami A, Tawachsupa S, Isleyen M. Batch-mixed
  70. iron treatment of high arsenic waters. Water Res 2001;
  71. (18): 4474-9.
  72. Banerjee K, Amy GL, Prevost M, Nour S, Jekel
  73. M, Gallagher PM, and colleagues. Kinetic and
  74. thermodynamic aspects of adsorption of arsenic onto
  75. granular ferric hydroxide (GFH). Water Res 2008;
  76. (13): 3371-8.
  77. Kumar R, Bishnoi NR, Bishnoi K. Biosorption
  78. of chromium (VI) from aqueous solution and
  79. electroplating wastewater using fungal biomass.
  80. Chemical Engineering Journal 2008; 135(3): 202-8.
  81. Maleki A, Eslami A. The study of kinetics and
  82. isotherm of adsorption of pentavalent arsenic from
  83. aqueous solution by wheat straw. Journal of Health
  84. and Environment 2010; 3(4): 439-50.
  85. Martinson CA, Reddy K. Adsorption of arsenic (III)
  86. and arsenic (V) by cupric oxide nanoparticles. J Colloid
  87. Interface Sci 2009; 336(2): 406-11.
  88. Msaferi M, Mesdaghinia A. Arsenic removal from
  89. drinking water using modified activated alumina.
  90. Journal of Water and Wastewater 2005; 55: 2-14.
  91. Ayer A, Mehrizadeh H. overview An of the applications
  92. of Zero-valent iron nanoparticles for the removal
  93. of environmental pollutants. Iranian Chemical
  94. Engineering Journal 2013; 67(12): 74-80.
  95. Zhang W-x. Nanoscale iron particles for environmental
  96. remediation: an overview. Journal of nanoparticle
  97. Research 2003; 5(3-4): 323-32.
  98. Biterna M, Antonoglou L, Lazou E, Voutsa D. Arsenite
  99. removal from waters by zero valent iron: batch and
  100. column tests. Chemosphere 2010; 78(1): 7-12.
  101. Azhdarpoor A, Nikmanesh N, Samaei M. Removal
  102. of arsenic from aqueous solutions using waste iron
  103. columns inoculated with iron bacteria. Environ Technol
  104. : 1-15.
  105. Lien H -L, Wilkin R T. High-level arsenite removal
  106. from groundwater byzero-valent iron. Chemosphere
  107. ; 59(3): 377-86.
  108. Bang S, Korfiatis GP, Meng X. Removal of arsenic
  109. from water by zero-valent iron. J Hazard Mater 2005;
  110. (1): 61-7.