Arsenic adsorption on goethite nanoparticles produced through hydrazine sulfate assisted synthesis method

다국어 초록 (Multilingual Abstract)

Goethite nanoparticles synthesized using hydrazine sulfate as a modifying agent were evaluated for As(V)adsorption capacity. The nanoparticles were characterized for their morphological and structural features. The precipitated goethite particles were spherical with particle size of less than 10 nm. Batch adsorption study was carried out systematically varying parameters such as pH, contact time, initial As(V) concentration and adsorbent doses. The Langmuir isotherm represented the equilibrium data well and the estimated monolayer adsorption capacity at ambient temperature was 76 mg/g, which is significantly higher than most of the adsorbents reported in the literature. Adsorption kinetic data were better represented by the pseudo-second order kinetic model. Intra-particle diffusion played a significant role in the rate controlling process in the initial hour. Desorption study showed that the loaded adsorbent could be regenerated when treated with dilute sodium hydroxide solution of pH 13.

참고문헌 (Reference)

1 M. Bissen, 30 (30): 9-, 2003

2 H. D. Ruan, 58 : 967-, 2002

3 P. Chutia, 162 : 440-, 2009

4 D. Mohan, 142 : 1-, 2007

5 M. E. Pena, 39 : 2327-, 2005

6 J.T. Mayo, 8 : 71-, 2007

7 T. Tuutijärvi, 166 : 1415-, 2009

8 S. R. Kanel, 40 : 2045-, 2006

9 G. Jegadeesan, 24 : 289-, 2005

10 S. Yean, 20 (20): 3255-, 2005

11 G. A. Waychunas, 7 : 409-, 2005

12 P. R. Grossl, 67 : 87-, 1995

13 B. A. Manning, 32 : 2383-, 1998

14 K. A. Matis, 97 : 239-, 1997

15 R. J. Bowell, 9 : 279-, 1994

16 S. Fendorf, 31 (31): 315-, 1997

17 S. Music, 73 (73): 541-, 2000

18 K. M. Parida, 178 : 586-, 1996

19 D. Borah, 319 : 53-, 2008

20 M. Ristic, 834-836 : 454-, 2007

21 S. S. Tripathy, 138 : 179-, 2008

22 S. Lagergren, 24 : 1-, 1898

23 G. McKay, 34 : 451-, 1999

24 W. J. J. Weber, 89 : 31-, 1963

25 H. S. Altundogan, 20 : 761-, 2000

26 M.A. Anderson, 54 : 391-, 1976

27 K. R. Hall, 5 : 212-, 1966

28 S. E. O’Reilly, 65 : 67-, 2001

29 K. Gupta, 20 : 1361-, 2008

30 P. M. Solozhenkin, 39 (39): 287-, 2003

31 S.A. Wasay, 30 (30): 1143-, 1996

32 H. Park, 11 : 1981-, 2009

33 D. Mohapatra, 20 : 683-, 2008

34 "Guidelines for drinking water quality"

35 L. Sigg, "Aquatic Surface Chemistry: Chemical Processes at the Particle- Water Interface" John Wiley and Sons 1987