Removal of Pb(II) and Cd(II) from water by adsorption on peels of banana.

The adsorption of lead(II) and cadmium(II) on peels of banana has been studied in batch mode using flame atomic absorption spectroscopy for metal estimation. Concerned parameters like adsorbent dose, pH, contact time and agitation speed were investigated. Langmuir, Freundlich and Temkin isotherms were employed to describe adsorption equilibrium. The maximum amounts of cadmium(II) and lead(II) adsorbed (qm), as evaluated by Langmuir isotherm, were 5.71 mg and 2.18 mg per gram of powder of banana peels, respectively. Study concluded that banana peels, a waste material, have good potential as an adsorbent to remove toxic metals like lead and cadmium from water.

[1]  M. Horsfall,et al.  Sorption of cadmium(II) and zinc(II) ions from aqueous solutions by cassava waste biomass (Manihot sculenta Cranz). , 2003, Water research.

[2]  R. Leyva-Ramos,et al.  Adsorption of cadmium(II) from aqueous solution on natural and oxidized corncob , 2005 .

[3]  J. Gardea-Torresdey,et al.  Chemical modification and X-ray absorption studies for lead(II) binding by Medicago sativa (alfalfa) biomass , 2002 .

[4]  Najma Memon,et al.  Sawdust--a green and economical sorbent for the removal of cadmium (II) ions. , 2007, Journal of hazardous materials.

[5]  R. Balasubramanian,et al.  Evaluation of the marine algae Ulva fasciata and Sargassum sp. for the biosorption of Cu(II) from aqueous solutions. , 2007, Bioresource technology.

[6]  D. Zaia,et al.  Use of rice straw as biosorbent for removal of Cu(II), Zn(II), Cd(II) and Hg(II) ions in industrial effluents. , 2009, Journal of hazardous materials.

[7]  T. Anirudhan,et al.  Kinetic and equilibrium modelling of lead(II) sorption from water and wastewater by polymerized banana stem in a batch reactor , 2005 .

[8]  U. Kumar,et al.  Sorption of cadmium from aqueous solution using pretreated rice husk. , 2006, Bioresource technology.

[9]  Y. Orhan,et al.  The Removal of Heavy Metals by Using Agricultural Wastes , 1993 .

[10]  V. Gupta,et al.  Removal of lead and chromium from wastewater using bagasse fly ash--a sugar industry waste. , 2004, Journal of colloid and interface science.

[11]  Y. Ho,et al.  Pseudo-isotherms for the sorption of cadmium ion onto tree fern , 2004 .

[12]  W. Ngah,et al.  Kinetics and Thermodynamic Study of Lead Adsorption from Aqueous Solution onto Rubber (Hevea brasiliensis) Leaf Powder , 2006 .

[13]  S. Min,et al.  Improvement of cadmium ion removal by base treatment of juniper fiber. , 2004, Water research.

[14]  C. F. Forster,et al.  THE USE OF SAGO WASTE FOR THE SORPTION OF LEAD AND COPPER , 1998 .

[15]  Y. Ho,et al.  Sorption of lead ions from aqueous solution using tree fern as a sorbent , 2004 .

[16]  M. Yahya,et al.  Equilibrium Adsorption Study of Lead Ions onto Sodium Hydroxide Modified Lalang (Imperata cylindrica) Leaf Powder , 2006 .

[17]  Vinod K. Gupta,et al.  Removal of cadmium and nickel from wastewater using bagasse fly ash--a sugar industry waste. , 2003, Water research.

[18]  Kun She Low,et al.  Sorption of cadmium and lead from aqueous solutions by spent grain , 2000 .