Acid Orange 7 Dye Biosorption By Salvinia Natans Biomass

Abstract

Textile industries are responsible for producing large amounts of highly contaminated effluents by several types of synthetic dyes, which are characterized by being toxic and reactive. Biosorption technique has been used as a promising treatment way to the pigments that do not adhere to the tissues fibers during dyeing process. Among the diversity of materials, macrophytes can act as biosorbents of conventional pollutants, heavy metals and organic compounds. Batch experiments were carried out for biosorption of Acid Orange 7 dye onto macrophyte Salvinia natans. Effects of initial dye pH, contact time and temperature were investigated. Chemical and morphological characteristics of the biosorbent were evaluated before and after biosorption process using methods such as Scanning Electron Microscopy (SEM) and Infrared Spectroscopy (FT-IR). Sorption kinetics was conducted and followed pseudo-second order kinetic model. Equilibrium data were well represented by Langmuir model. The Salvinia natans exhibited a maximum uptake of 60.3 mg of dye per gram of macrophyte. The results indicated that Salvinia natans is a promising lowcost technology bioadsorbent for the removal of waste dyes. Copyright © 2013, AIDIC Servizi S.r.l.3210511056Aksu, Z., Tezer, S., Biosorption of reactive dyes on the green alga chlorella vulgaris (2005) Process Biochem., 40, pp. 1347-1361Aravindhan, R., Rao, J.R., Nair, B.U., Removal of basic yellow dye from aqueous solution by sorption on green alga caulerpascal pelliformis (2007) J. Hazard. Mater., 142, pp. 68-76Argun, M.E., Dursun, S., Ozdemir, C., Karatas, M., Heavy metal adsorption by modified oak sawdust: Thermodynamics and kinetics (2007) J. Hazard. Mater, 141, pp. 77-85Hameed, B.H., Ahmad, A.L., Latiff, K.N.A., Adsorption of basic dye (methylene blue) onto activated carbon prepared from rattan sawdust (2007) Dyes Pigm, 75, pp. 143-149Kannan, K., Sundram, M.M., Kinetics and mechanism of removal of methylene blue by adsorption on various carbons - A comparative study (2001) Dyes Pigm, 51, pp. 25-40Kumar, K.V., Sivanesan, S., Ramamurthi, V., Adsorption of malachite green onto Pithophora sp., a fresh water algae: Equilibrium and kinetic modeling (2005) Process Biochem, 40, pp. 2865-2872Lima, L.K.S., Kleinübing, S.J., Silva, E.A., Silva, M.G.C., Removal of chromium from wastewater using macrophyte Lemna as biosorbent (2011) Chemical Engineering Transactions, 25, pp. 303-308Srinivasan, A., Viraraghavan, T., Decolorization of dye wastewaters by biosorbents: A review (2010) J. Environ. Manage., 91, pp. 1915-1929Vieira, M.G.A., Almeida Neto, A.F., Silva, M.G.C., Carneiro, C.N., Melo Filho, A.A., Influence of the system on adsorption of Pb(II) and Cu(II) by rice husks ash: Kinetic study (2011) Chemical Engineering Transactions, 24, pp. 1213-1218Won, S.W., Choi, S.B., Yun, Y.S., Interaction between protonated waste biomass of corynebacteriumg lutamicum and anionic dye reactive red 4 (2005) Colloids Surf. A., 262, pp. 175-18