DOI:10.29111/ijlrst ISRA Impact Factor:3.35, Peer-reviewed, Open-access Journal
Research Paper Open Access
International Journal of Latest Research in Science and Technology Vol.4 Issue 2, pp 124-128,Year 2015
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Received : 21 April 2015; Accepted : 26 April 2015 ; Published : 30 April 2015
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Article No. | 10506 |
Cr (VI) is a toxic metal on the list of priority pollutants due to its mutagenic and carcinogenic properties defined by the US EPA. Cr (VI) is mainly in discharges from electroplating, leather tanning, textile dyeing and metal finishing industries. The US EPA has the maximum allowable limit to Cr (VI) in drinking water and inland surface waters as 0.05 and 0.1 mg/L, respectively. Recently, a variety of low cost materials has been study for their ability to remove this metal from aqueous solution with promising results.We studied the Cr (VI) removal capacity in aqueous solution by sawdust biomass of pine tree. We use the diphenylcarbazide method to evaluate the metal concentration in solution and we obtain that the highest biosorption of the metal (50 mg/L) occurs within 9 hours, at pH of 1.0, and 28°C. The highest removal (100%), was observe at 50oC and 60°C, at 2 hours. At the analyzed concentrations of Cr (VI), sawdust showed good removal capacity of 1.0 g/L of the metal (100%, 40 min at 60oC, and 150 min at 28oC, respectively). If we increase the biosorbent concentration, increase the metal removal, with 100% at 60 min with 5 g of sawdust biomass.On the other hand, it removes efficiently the metal in situ (57.25%, and 72% of removal, 7 days of incubation, with 5 g of biomass, in soil and water contaminated, respectively). So, the biomass of pine tree can be used to eliminate the metal of contaminated sites.
Copyright © 2015 I. Acosta-Rodr?guez et al. This is an open access article distributed under the Creative Commons Attribution 4.0 International (CC BY 4.0) license which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
I. Acosta-Rodr?guez,K.C. Ru?z-Trujillo,J.F. C?rdenas Gonz?lez,M.G. Moctezuma-Z?rate,V.M. Mart?nez-Ju?rez , " Chromium (vi) Removal By Sawdust Of Pine Tree ", International Journal of Latest Research in Science and Technology . Vol. 4, Issue 2, pp 124-128 , 2015
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