Evaluation of Kinetics of Leaching of Lignins and Tannins in Batch Adsorption of Cr (VI) by Emblica officinalis Leaf Powder (EOLP)
DOI:
https://doi.org/10.6000/1929-6037.2014.03.04.7Keywords:
Emblica officinalis leaf powder (EOLP), batch test filtrate, chromium (VI), leaching, kinetics.Abstract
The present paper is aimed to assess the contents of lignin and tannin leached in the batch adsorption test filtrate and to evaluate the kinetics of leaching of lignin and tannins. For the purpose, raw Emblica officinalis leaf powder (EOLP) has been used as adsorbent for removal of Cr (VI) from aqueous solution in batch mode of operation. Test results indicate that EOLP imparts lignin and tannin in batch test filtrate. Both lignin and tannin contents are related to pH, chemical oxygen demand (COD), initial Cr(VI) concentration (C0) residual Cr(VI) concentration in batch test filtrate (C),amount of adsorbent (Wad) and the time of contact (t). Dimensionless parameters are developed and the lignin and tannin contents are well correlated with dimensionless parameters. From the studies conducted on rate of leaching of both soluble lignin and tannins, the kinetics of leaching of soluble lignin and tannin follow a pseudo second order type rate kinetics. Linear regression models are developed based on pseudo second order kinetics for determination of lignin and tannin contents in batch test filtrate. However, these findings need further verification in future investigations.
References
Qaiser S, Saleemi AR, Ahmad UM. Heavy metal uptake by agro based waste materials. Electro J Biotechnol 2007; 10(3): 409-416. http://dx.doi.org/10.2225/vol10-issue3-fulltext-12
Qaiser S, Saleemi AR, Ahmad UM. Biosorption of Lead (II) and chromium (VI) on groundnut hull: Equilibrium, kinetics and thermodynamics study. Electro J Biotechnol 2009; 12(4): 1-17.
Park D, Yun YS, Park JM. Studies on hexavalent chromium biosorption by chemically-treated biomass of Eckloniasp. Chemosphere 2005a; 60: 1356-1364. http://dx.doi.org/10.1016/j.chemosphere.2005.02.020
Kumar U. Agricultural products and by-products as a low cost adsorbent for heavy metal removal from water and wastewater: A review. J Scient Res Essay 2006; 1(2): 33-37.
Morrison IM, Asiedu EA, Stuchbury T, Powell AA. Determination of lignin and tannin contents of cowpea seed coats. Annals of Botany 1995; 76: 287-290. http://dx.doi.org/10.1006/anbo.1995.1097
Ostrofsky ML. Relationship between chemical characteristics of autumn-shed leaves and aquatic processing rates. J North American Bentholog Soc 1997; 16(4): 750-759. http://dx.doi.org/10.2307/1468168
Hernes PJ, Benner R, Cowie GL, Goñl MA, Bergamaschi BA, Hedges JI. Tannin diagenesis in mangrove leaves from a tropical estuary: A novel molecular approach. Geochimica et Cosmochimica Acta 2001; 65(1): 3109-3122. http://dx.doi.org/10.1016/S0016-7037(01)00641-X
Gudej J, Tomczyk M. Determination of flavonoids, tannins and ellagic acid in leaves from Rubus L. species. Arch Pharm Res 2004; 27: 1114-1119. http://dx.doi.org/10.1007/BF02975114
Digabel FL, Avérous L. Effects of lignin content on the properties of lignocelluloses-based biocomposites. Carbohydrate Polymers 2006; 66(4): 537-545. http://dx.doi.org/10.1016/j.carbpol.2006.04.023
Ramakrishnan K, Selvi SR, Shubha R. Tannin and its analytical techniques. Ind Chem Engrg Section A 2006; 48(2): 88-93.
Suss HU, Kronis JD. The correlation of COD and yield in chemical pulp bleaching.A Symposium on Tappi breaking the pulp yield barrier, Atlanta 1998.
Ibrahim MNM, Chuah SB, Rosli WDW. Characterization of lignin precipitated from the soda black liquor of oil palm empty fruit bunch fibers by various mineral acids. AJSTD 2004; 21(1): 57-67.
http://www.hillgreen.com/pdf/AMLA.pdf
http://tede.ibict.br/tde_arquivos/1/TDE-2006-11-21T15:07:00Z433/Publico/2_RosileiGarcia_ Anexos.pdf
Atanassova M, Christova-Bagdassarian V. Determination of tannin content by titrimetric method for comparison of different plant species. J Univ Chem Technol Metallur 2009; 44(4): 413-415.
APHA. Standard methods for the examination of water and wastewater, American Public Health Association, Washington D.C., 18th Edn 2000.
Aoyama M, Tsuda M. Removal of Cr(VI) from aqueous solutions by Larch bark. Wood Sci Technol 2006; 35: 425-434. http://dx.doi.org/10.1007/s002260100103
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