The Removal of As(V) from Drinking Waters by Coagulation Process using Iron Salts
In this study arsenate [As(V)] removal from drinking water by coagulation process was investigated. Ferric chloride (FeCl3.6H2O) and ferrous sulfate (FeSO4.7H2O) were used as coagulant. The effects of major operating variables such as coagulant dose (1–30 mg/L) and pH (5.5–9.5) were investigated. Ferric chloride and ferrous sulfate were found as effective and reliable coagulant due to required dose, residual arsenate and coagulant concentration. Optimum pH values for maximum arsenate removal for ferrous sulfate and ferric chloride were found as 8 and 7.5. The arsenate removal efficiency decreased at neutral and acidic pH values for Fe(II) and at the high acidic and high alkaline pH for Fe(III). It was found that the increase of coagulant dose caused a substantial increase in the arsenate removal. But above a certain ferric chloride and ferrous sulfate dosage, the increase in arsenate removal was not significant. Ferric chloride and ferrous sulfate dose above 8 mg/L slightly increased arsenate removal.
[1] V.K. Sharma, M. Shon, "Aquatic arsenic: Toxicity, speciation,
transformations, and remediation," Environment International, 2009, vol.
35, pp. 743-759.
[2] J.A.G. Gomes, P. Daida, M. Kesmez, M. Weir, H. Moreno, J.R. Parga,
G. Irwin, H.M. Whinney, T. Grady, E. Peterson, D.L. Cocke, "Arsenic
removal by electrocoagulation using combined Al-Fe electrode system
and characterization of products," Journal of Hazardous Materials, 2007,
vol. B139, pp. 220-231.
[3] P.R. Kumar, S. Chaudhari, K.C. Khilar, S.P. Mahajan, "Removal of
arsenic from water by electrocoagulation," Chemosphere, 2004, vol. 55,
pp. 1245-1252.
[4] S.Y.T Choong, T.G. Chuah, Y. Robiah, G. Koay, I. Azni, "Arsenic
toxicity, health hazards and removal techniques from water: an
overview," Science Direct Desalination, 2007, vol. 217, pp. 139-166.
[5] J.M. Triszcz, A. Porta, F.S.G. Einschlag, "Effect of operating conditions
on iron corrosion rates in zero-valent iron systems for arsenic removal,"
Chemical Engineering Journal, 2009, vol. 150, pp. 431-439.
[6] S.R. Wickramasinghe, B. Han, J. Zimbron, Z. Shen, M.N. Karim,
"Arsenic removal by coagulation and filtration: comprasion of
groundwaters from the United States and Bangladesh," Desalination,
2004, vol. 169, pp. 231-244.
[7] H. Guo, Y. Li, K. Zhao, "Arsenate removal from aqueous solution using
synthetic siderite," Journal of Hazardous Materials, 2010, vol. 176, pp.
174-180.
[8] V.K. Gupta, V.K. Saini, N. Jain, "Adsorption of As(III) from aqueous
solutions by iron oxide-coated sand," Journal of Colloid and Interface
Science, 2005, vol. 288, pp. 55-60.
[9] T.V. Nguyen, S. Vigneswaran, H.H. Ngo, J. Kandasamy, "Arsenic
removal by iron oxide coated sponge: Experimental performance and
mathematical models," Journal of Hazardous Materials, 2010, vol. 182,
pp. 723-729.
[10] Y.Y. Chang, K.H. Song, J.K. Yang, "Removal of As(III) in a column
reactor packed with iron-coated sand and manganese-coated sand,"
Journal of Hazardous Materials, 2008, vol. 150, pp. 565-572.
[11] C.S. Jeon, K. Baek, J.K. Park, Y.K. Oh, S.D. Lee, "Adsorption
characteristics of As(V) on iron-coated zeolite," Journal of Hazardous
Materials, 2009, vol. 163, pp. 804-808.
[12] K. Tyrovola, E. Peroulaki, N.P. Nikolaidis, "Modeling of arsenic
immobilization by zero valent iron," European Journal of Soil Biology,
2007, vol. 43, pp. 356-367.
[13] A. Jain, V.K. Sharma, O.S. Mbuya, "Removal of arsenite by Fe(VI),
Fe(VI)/Fe(III), and Fe(VI)/Al(III) salts: Effect of pH and anions,"
Journal of Hazardous Materials, 2009, vol. 169, pp. 339-344.
[14] M. Bilici Baskan, A. Pala, "A statistical experiment design approach for
arsenic removal by coagulation process using aluminum sulfate,"
Desalination, 2009, vol. 254, pp. 42-48.
[15] M. Bilici Baskan, A. Pala, "Determination of arsenic removal efficiency
by ferric ions using response surface methodology," Journal of
Hazardous Materials, 2009, vol. 166, pp. 796-801.
[1] V.K. Sharma, M. Shon, "Aquatic arsenic: Toxicity, speciation,
transformations, and remediation," Environment International, 2009, vol.
35, pp. 743-759.
[2] J.A.G. Gomes, P. Daida, M. Kesmez, M. Weir, H. Moreno, J.R. Parga,
G. Irwin, H.M. Whinney, T. Grady, E. Peterson, D.L. Cocke, "Arsenic
removal by electrocoagulation using combined Al-Fe electrode system
and characterization of products," Journal of Hazardous Materials, 2007,
vol. B139, pp. 220-231.
[3] P.R. Kumar, S. Chaudhari, K.C. Khilar, S.P. Mahajan, "Removal of
arsenic from water by electrocoagulation," Chemosphere, 2004, vol. 55,
pp. 1245-1252.
[4] S.Y.T Choong, T.G. Chuah, Y. Robiah, G. Koay, I. Azni, "Arsenic
toxicity, health hazards and removal techniques from water: an
overview," Science Direct Desalination, 2007, vol. 217, pp. 139-166.
[5] J.M. Triszcz, A. Porta, F.S.G. Einschlag, "Effect of operating conditions
on iron corrosion rates in zero-valent iron systems for arsenic removal,"
Chemical Engineering Journal, 2009, vol. 150, pp. 431-439.
[6] S.R. Wickramasinghe, B. Han, J. Zimbron, Z. Shen, M.N. Karim,
"Arsenic removal by coagulation and filtration: comprasion of
groundwaters from the United States and Bangladesh," Desalination,
2004, vol. 169, pp. 231-244.
[7] H. Guo, Y. Li, K. Zhao, "Arsenate removal from aqueous solution using
synthetic siderite," Journal of Hazardous Materials, 2010, vol. 176, pp.
174-180.
[8] V.K. Gupta, V.K. Saini, N. Jain, "Adsorption of As(III) from aqueous
solutions by iron oxide-coated sand," Journal of Colloid and Interface
Science, 2005, vol. 288, pp. 55-60.
[9] T.V. Nguyen, S. Vigneswaran, H.H. Ngo, J. Kandasamy, "Arsenic
removal by iron oxide coated sponge: Experimental performance and
mathematical models," Journal of Hazardous Materials, 2010, vol. 182,
pp. 723-729.
[10] Y.Y. Chang, K.H. Song, J.K. Yang, "Removal of As(III) in a column
reactor packed with iron-coated sand and manganese-coated sand,"
Journal of Hazardous Materials, 2008, vol. 150, pp. 565-572.
[11] C.S. Jeon, K. Baek, J.K. Park, Y.K. Oh, S.D. Lee, "Adsorption
characteristics of As(V) on iron-coated zeolite," Journal of Hazardous
Materials, 2009, vol. 163, pp. 804-808.
[12] K. Tyrovola, E. Peroulaki, N.P. Nikolaidis, "Modeling of arsenic
immobilization by zero valent iron," European Journal of Soil Biology,
2007, vol. 43, pp. 356-367.
[13] A. Jain, V.K. Sharma, O.S. Mbuya, "Removal of arsenite by Fe(VI),
Fe(VI)/Fe(III), and Fe(VI)/Al(III) salts: Effect of pH and anions,"
Journal of Hazardous Materials, 2009, vol. 169, pp. 339-344.
[14] M. Bilici Baskan, A. Pala, "A statistical experiment design approach for
arsenic removal by coagulation process using aluminum sulfate,"
Desalination, 2009, vol. 254, pp. 42-48.
[15] M. Bilici Baskan, A. Pala, "Determination of arsenic removal efficiency
by ferric ions using response surface methodology," Journal of
Hazardous Materials, 2009, vol. 166, pp. 796-801.
@article{"International Journal of Earth, Energy and Environmental Sciences:58983", author = "M. Donmez and F. Akbal", title = "The Removal of As(V) from Drinking Waters by Coagulation Process using Iron Salts", abstract = "In this study arsenate [As(V)] removal from drinking water by coagulation process was investigated. Ferric chloride (FeCl3.6H2O) and ferrous sulfate (FeSO4.7H2O) were used as coagulant. The effects of major operating variables such as coagulant dose (1–30 mg/L) and pH (5.5–9.5) were investigated. Ferric chloride and ferrous sulfate were found as effective and reliable coagulant due to required dose, residual arsenate and coagulant concentration. Optimum pH values for maximum arsenate removal for ferrous sulfate and ferric chloride were found as 8 and 7.5. The arsenate removal efficiency decreased at neutral and acidic pH values for Fe(II) and at the high acidic and high alkaline pH for Fe(III). It was found that the increase of coagulant dose caused a substantial increase in the arsenate removal. But above a certain ferric chloride and ferrous sulfate dosage, the increase in arsenate removal was not significant. Ferric chloride and ferrous sulfate dose above 8 mg/L slightly increased arsenate removal.
", keywords = "Arsenic removal, coagulation, ıron salts, drinking water.", volume = "5", number = "6", pages = "368-3", }
