Hexavalent chromium removal by Litchi chinensis Sonn peel Article uri icon


  • Problem statement: We studied the Chromium (VI) removal capacity in aqueous solution by the litchi peel. Approach: By using the diphenylcarbazide method to evaluate the metal concentration. Results: So, the highest biosorption of the metal (50 mg L-1) occurs within 6 min, at pH of 1 and 28°C. According to temperature, the highest removal was observed at 40 and 50°C, in 45 min, when the metal (1 g L-1) is completely adsorbed. At the analyzed concentrations of Cr (VI), litchi peel, showed excellent removal capacity, besides it removes efficiently the metal in situ (100%25 removal, 5 days of incubation, 5 and 10 g of biomass). After 1 h of incubation the studied biomass reduces 1.0 g of Cr (VI) with the simultaneous production of Cr (III). Conclusion: The shell can be used to eliminate it from industrial wastewater. © 2012 Science Publications.

publication date

  • 2012-01-01