Application of acidic treated pumice as an adsorbent for the removal of azo dye from aqueous solutions: kinetic, equilibrium and thermodynamic studies
Tóm tắt
Colored effluents are one of the important environment pollution sources since they contain unused dye compounds which are toxic and less-biodegradable. In this work removal of Acid Red 14 and Acid Red 18 azo dyes was investigated by acidic treated pumice stone as an efficient adsorbent at various experimental conditions. Removal of dye increased with increase in contact time and initial dye concentration, while decreased for increment in solution temperature and pH. Results of the equilibrium study showed that the removal of AR14 and AR18 followed Freundlich (r2>0.99) and Langmuir (r2>0.99) isotherm models. Maximum sorption capacities were 3.1 and 29.7 mg/g for AR 14 and AR18, namely significantly higher than those reported in the literature, even for activated carbon. Fitting of experimental data onto kinetic models showed the relevance of the pseudo-second order (r2>0.99) and intra-particle diffusion (r2>0.98) models for AR14 and AR18, respectively. For both dyes, the values of external mass transfer coefficient decreased for increasing initial dye concentrations, showing increasing external mass transfer resistance at solid/liquid layer. Desorption experiments confirmed the relevance of pumice stone for dye removal, since the pH regeneration method showed 86% and 89% regeneration for AR14 and AR18, respectively.
Tài liệu tham khảo
Huang M, Xu C, Wu Z, Huang Y, Lin J, Wu J: Photocatalytic discolorization of methyl orange solution by Pt modified TiO2 loaded on natural zeolite. Dyes Pigments. 2008, 77 (2): 327-334. 10.1016/j.dyepig.2007.01.026.
Jeni J, Kanmani S: Solar nanophotocatalytic decolorisation of reactive dyes using titanium dioxide. Iran J Environ Health Sci Eng. 2011, 8 (1): 15-24.
Shookohi R, Vatanpoor V, Zarrabi M, Vatani A: Adsorption of acid red 18 (AR18) by activated carbon from poplar wood: kinetic and equilibrium study. E J Chem. 2010, 7 (1): 65-72. 10.1155/2010/958073.
Ehrampoush MH, Moussavi GR, Ghaneian MT, Rahimi S, Ahmadian M: Removal of methylene blue dye from textile simulated sample using tubular reactor and tio2/uv-c photocatalytic process. Iran J Environ Health Sci Eng. 2011, 8 (1): 35-40.
Baocheng Q, Jiti Z, Xuemin X, Chunli Z, Hongxia Z, Xiaobai Z: Adsorption behavior of Azo Dye C. I. Acid Red 14 in aqueous solution on surface soils. J Environ Sci. 2008, 20 (6): 704-709. 10.1016/S1001-0742(08)62116-6.
Fu Z, Zhang Y, Wang X: Textiles wastewater treatment using anoxic filter bed and biological wriggle bed-ozone biological aerated filter. Bioresour Technol. 2011, 102 (4): 3748-3753. 10.1016/j.biortech.2010.12.002.
Yasar A, Ahmad N, Amanat A, Khan A, Yousaf A: Decolorization of Blue CL-BR dye by AOPs using bleach wastewater as source of H2O2. J Environ Sci. 2007, 19 (10): 1183-1188. 10.1016/S1001-0742(07)60193-4.
Wu J, Liu C, Chu KH, Suen S: Removal of cationic dye methyl violet 2B from water by cation exchange membrane. J Membrane Sci. 2008, 309 (1–2): 239-245.
Zendehdel M, Kalateh Z, Alikhani H: Efficiency evaluation of NaY zeolite and TiO2/NaY zeolite in removal of methylene blue dye from aqueous solutions. Iran J Environ Health Sci Eng. 2011, 8 (3): 265-272.
Samadi MT, Rahmani AR, Zarrabi M, Shahabi E, Samie F: Adsorption of chromium (VI) from aqueous solution by sugar beet bagasse-based activated charcoal. Environ Technol. 2009, 30 (9): 1023-1029.
Ehrampoush MH, Ghanizadeh G, Ghaneian MT: Equilibrium and kinetics study of reactive red 123 dye removal from aqueous solution by adsorption on eggshell. Iran J Environ Health Sci Eng. 2011, 8 (2): 101-108.
Crini G, Badot PM: Application of chitosan, a natural amino polysaccharide, for dye removal from aqueous solutions by adsorption processes using batch studies: a review of recent literature. Prog Poly Sci. 2008, 33 (4): 399-447. 10.1016/j.progpolymsci.2007.11.001.
Janos P, Sedivy P, Ryznarova M, Grotschelova S: Sorption of basic and acid dyes from aqueous solutions onto oxihumolite. Chemosphere. 2005, 59 (1–3): 881-886.
Janos P, Buchtova H, Ryznarova M: Sorption of dyes from aqueous solutions onto fly ash. Water Res. 2003, 37 (3): 4938-4944.
Panuccio MR, Sorgona A, Rizzo M, Cacco G: Cadmium adsorption on vermiculite, zeolite and pumice: Batch experimental studies. J Environ Man. 2009, 90 (1): 364-374. 10.1016/j.jenvman.2007.10.005.
Bekaroglua SSK, Yigit NO, Karanfilb T, Kitis M: The adsorptive removal of disinfection by-product precursors in a high-SUVA water using iron oxide-coated pumice and volcanic slag particles. J Hazard Mater. 2010, 183 (1–3): 389-394.
Moraci N, Calabro PS: Heavy metals removal and hydraulic performance in zero-valent iron/pumice permeable reactive barriers. J Environ Man. 2010, 91 (11): 2336-2341. 10.1016/j.jenvman.2010.06.019.
Ozturk B, Yildirim Y: Investigation of sorption capacity of pumice for SO2 capture. Proc Saf Environ Protect. 2008, 86 (1): 31-36. 10.1016/j.psep.2007.10.010.
Ersoy B, Sariisik A, Dikmen S, Sariisik G: Characterization of acidic pumice and determination of its electrokinetic properties in water. Powder Technol. 2010, 197 (3): 129-135.
Azizian S, Bashiri H: Adsorption kinetics at solid/solution interface: Statistical rate theory at initial times of adsorption and close to equilibrium. Langmuir. 2008, 24 (3): 11669-11675.
Azizian S: Kinetic models of sorption: a theoretical study. J Colloid Interfac Sci. 2004, 276 (1): 47-52. 10.1016/j.jcis.2004.03.048.
Kuo C, Wu C, Wu J: Adsorption of direct dyes from aqueous solutions by carbon nanotubes: Determination of equilibrium, kinetics and thermodynamics parameters. J Colloid Interface Sci. 2008, 327 (4): 308-315.
Tsai WT, Yaung CC, Ing CH, Feng CC: Adsorption of acid dyes from aqueous solution on activated bleaching earth. J Colloid Interfac Sci. 2004, 275 (1): 72-79. 10.1016/j.jcis.2004.01.072.
MacKay G, El-Geundi MS, Nassar MM: Adsorption of dyes onto bagasse pitch during the external transport processes. Water Res. 1998, 22 (3): 1527-1535.