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