American Society of Civil Engineers


Adsorption of As(V) from Water Using Nanomagnetite


by Tugba Türk, (corresponding author), (Research Assistant, Dept. of Mining Engineering, Karadeniz Technical Univ., 61080 Trabzon, Turkey E-mail: tugbaturk@yahoo.com.tr), Ibrahim Alp, (Assistant Professor, Karadeniz Teknik Üniversitesi, Maden Müh. Böl., 61080 Trabzon, Turkey. E-mail: ialp@ktu.edu.tr), and Hacı Deveci, (Associate Professor, Karadeniz Teknik Üniversitesi, Maden Müh. Böl., 61080 Trabzon, Turkey. E-mail: hdeveci@ktu.edu.tr)

Journal of Environmental Engineering, Vol. 136, No. 4, April 2010, pp. 399-404, (doi:  http://dx.doi.org/10.1061/(ASCE)EE.1943-7870.0000162)

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Document type: Journal Paper
Abstract: This paper describes a study of the removal of arsenate [As(V)] from aqueous solutions by adsorption on commercial nanomagnetite (NM). The influences of pH, initial arsenate [As(V)] concentration, and adsorbent concentration were investigated in multiple kinetic runs. The adsorption kinetics and isotherms were investigated in batch experiments. The experimental data were determined to be best described by the pseudosecond-order kinetic model. Langmuir and Freundlich isotherms were used to fit the adsorption data from equilibrium experiments. The findings have revealed that NM has high removal efficiency for arsenate, with its capacity to reduce an initial level of 300 to <5-μg/L As(V), i.e., below the limit (10-μg/L As) set for potable water by the World Health Organization.


ASCE Subject Headings:
Adsorption
Kinetics
Drinking water
Water pollution
Abatement and removal

Author Keywords:
Arsenate
Adsorption
Kinetics
Isotherm
Commercial nanomagnetite (NM)