جذب مس از محلولهای آبی با پسماند چای اصلاح شده با نانو ذرات مگنتیت

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد خاکشناسی، دانشکده کشاورزی، دانشگاه شهید چمران، اهواز

2 استادیار گروه خاکشناسی، دانشکده کشاورزی، دانشگاه شهید چمران، اهواز

3 استادیار گروه مهندسی بهداشت محیط، دانشکده بهداشت و عضو مرکز تحقیقات فناوری‌های محیط زیستی، دانشگاه علوم پزشکی جندی شاپور، اهواز

4 استادیار گروه شیمی، دانشکده علوم، دانشگاه شهید چمران، اهواز

چکیده

آلودگی آب و خاک به فلزات سنگین تهدیدی جدی برای محیط زیست و سلامت بشر است. یافتن روشی مؤثر برای پالایش این فلزات از آب اهمیت فراوانی دارد. هدف از انجام این پژوهش امکان‌یابی اصلاح پسماندهای چای با نانو ذرات مگنتیت و بررسی کارایی آن برای حذف فلز مس از محلولهای آبی بود. به این منظور جاذب طبیعی از پسماند چای تولید و با نانو ذرات مگنتیت اصلاح گردید. ویژگی‌های جاذب با استفاده از  SEMو طیف سنجی مادون قرمز تعیین شدند. اثر پارامترهای مختلف مانند زمان تماس، pH محلول مس، غلظت فلز و غلظت جاذب بر شدت حذف مس بررسی گردید. نتایج نشان داد با افزایش pH از 2 تا 5 ، درصد حذف مس از 87 به 98 درصد افزایش یافت و حداکثر جذب در pH برابر 5 حاصل شد. با افزایش غلظت اولیه مس، درصد حذف آن از 5/98 به 89 درصد کاهش و با افزایش مقدار جاذب، درصد حذف به 6/94 درصد افزایش یافت. همچنین نتایج نشان داد که جذب فلز مس از هر دو مدل همدمای لانگمیر و فروندلیچ پیروی می‌کند. ظرفیت جذب لانگمیر 4/22 میلی‌گرم بر گرم به‌دست آمد. به‌طور کلی نتایج این پژوهش نشان داد پسماندهای چای اصلاح شده با نانو ذرات مگنتیت توانایی بالایی در حذف مس از آبهای آلوده دارند. همچنین جداسازی جاذب پس از حذف فلزات آسان است.

کلیدواژه‌ها


عنوان مقاله [English]

Removal of Cu(II) from Aqueous Solution by Modified Tea Waste with Magnetic Nanoparticles

نویسندگان [English]

  • Seyyedeh Masoumeh Hosseini 1
  • Ahmad Farrokhian Firouzi 2
  • Aliakbar Babaei 3
  • Fariba Heidarizadeh 4
1
2
3
4
چکیده [English]

Water and soil pollution by heavy metals is a serious threat to environment and human health. Therefore finding an effective method for removing heavy metals from water is very important. Removal of heavy metals from water by adsorption method has increasingly received much attention in recent years because it is simple relatively low-cost and effective method. The main objective of this research is to investigate the possibility of removing Cu(II) from aqueous solution using modified tea waste with magnetite nanoparticles. Consequently, modified tea waste with magnetite nanoparticles were prepared and characterized by Atomic Force Microscopy (AFM) and Fourier Transform Infrared Spectroscopy (FTIR). The effects of various parameters, such as contact time, pH, Cu concentration and adsorbent dosage were studied. The adsorption isotherm data were fitted to Langmuir and Freundlich equation. The results indicated that the sorption data can be represented by both Langmuir and Freundlich isotherm models, and the Langmuir adsorption capacity, was found to be 22.4 mgg−1. The results indicated that Cu(II) adsorption increased with increasing solution pH. Maximum removal of Cu(II) was obtained at pH=5.5. The results also showed the adsorption were decreased by increasing of initial Cu(II) concentration. An increase in adsorbent dosage increased the removal of Cu(II). The results also revealed that modified tea waste with magnetite nanoparticles can be an attractive option for metal removal from contaminated water.

کلیدواژه‌ها [English]

  • Removal of Cu
  • Modified Tea Waste
  • Adsorption Isotherm
  • Magnetite Nanoparticle
  • Aqueous solution
1- Cay, S., Uyanik, A., and Ozasik, A. (2004). “Single and binary component adsorption of copper(II) and cadmium(II) from aqueous solutions using tea-industry waste.” J. of Sep. Purif. Technol., 38, 273-280.
2- Xu, J., Yang, L., Wang, Z., Dong, G., Huang, J., and Wang, Y. (2006). “Toxicity of copper on rice growth and accumulation of copper in rice grain in copper contaminated soil.” J. of Chemosphere, 62, 602-607.
3- Özcan, A., and Özcan, A.S. Tunali, S., Akar, T., and Kiran. I. (2005). “Determination of the equilibrium, kinetic and thermodynamic parameters of adsorption of copper(II) ions onto seeds of Capsicum annuum.” J. of Hazard. Mater., 124, 200-208.
4- Chang, Y., and Chen, D. (2005). “Preparation and adsorption properties of monodisperse chitosan-bound Fe3O4 magnetic nanoparticles for removal of Cu(II) ions.” J. of Colloid and Interface Science, 283, 446-451.
5- Prasad, M., and Saxena, S. (2004). “Sorption mechanism of some divalent metal ions onto low-cost mineral adsorbent.” J. of Ind. Eng. Chem. Res., 43, 1512-1522.
6- Ho, Y.S., Jhonwase, D.A., and Forster, C.F. (1995). “Batch nickel removal from aqueous solution by Sphagnum moss peat.” J. of Water Res., 29, 1327-1332.
7- Acar, F.N., and Malkoc, E. (2004). “The removal of chromium (VI) from aqueous solution by Fagus orientalis L, Bioresour.” J. of Technol., 94, 13-15.
8- Malkoc, E., and Nuhoglu, Y. (2006). “Removal of Ni(II) ions from aqueous solutions using waste of tea factory: Adsorption on fixed bed column.” J. of Hazard. Mater., 135, 328-336.
9- Malkoc, M., and Nuhoglu, Y. (2005). “Investigation of Ni(II) removal from aqueous solution using tea factory waste.” J. of Hazard. Mater., 127, 120-128.
10- Alibeigi, S., and Vaezi, M. (2008). “Phase transformation of iron oxide nanoparticles by varying the molar ratio of Fe2+: Fe3+.” J. of Chem. Eng. Technol., 31(11), 1591-1596.
11- Clifford, D.A., and Ghurye, G.L. (2002). Environmental chemistry of arsenic, Marcel Dekker, Inc., New York.
12- Goya, G.F., Berquo, T.S., and Fonseca, F.C. (2003). “Static and dynamic magnetic properties of spherical magnetite nanoparticles.” J. of Appl. Phys., 94, 3520-3528.
13- Shih, H., and Dong, H. (2009). “Rapid removal of heavy metal cations and anions from aqueous solutions by anamino-functionalized magnetic nano-adsorbent.” J. of Hazardous Materials, 163, 174-179.
14- Ziemniak, S.E., Anovitz, L.M., Machesky, M.L., Benezeth, P., and Palmer, D.A. (2004). Aqueous systems at elevated temperatures and pressures, Elsevier, London.
15- Si, S., Kotal, A., Mandal, T.K., Giri, S., Nakamura, H., and  Kohara, T. (2004). “Size-controlled synthesis of magnetite nanoparticles in the presence of polyelectrolytes.” J. of Chem Mater., 16, 3489-3496.
16- Qian, Q., Mochidzuki, K., Fujii, T., and Sakoda, A. (2009). “Removal of copper from aqueous solution using iron-containing adsorbents derived from methane fermentation sludge.” J. of Hazardous Materials, 172, 1137-1144.
17- Freundlich, H.M.F. (1906). “Over the adsorption in solution.” J. of Phys. Chem., 57, 385-470.
18- Langmuir, I. (1916). “The constitution and fundamental properties of solids and liquids.” Part. 1. Solids, J. of Am. Chem. Soc., 38, 2221-2295.
19- Kapoor, A., and Viraragavan, T. (1998). “Heavy metal biosorption sites in Aspergillus niger, Bioresour.” J. of Technol., 61, 221-227.
20- Mobasherpour, I., Salahi, E., and Pazouki, M. (2011). “Removal of divalent cadmium cations by means of synthetic nano crystallite hydroxyapatite.” J. of Desalination, 266(1-3), 142-148.
21- Krishnan, A.A., and Anirudhan, T.S. (2003). “Removal of cadmium (II) from aqueous solutions by steam activated suphurised carbon prepared from sugar-cane bagasse pith: Kinetics and equilibrium studies.” J. of Water Research, 29(2), 147-156.
22- Raji, C., and Anirudhan, T.S. (1997). “Chromium (VI) adsorption by sawdust carbon: kinetics and equilibrium.” Indian J. of Chemical Technology, 4, 228-236.
23- Zavvar Mousavi, S.H., Fazli, M., and Rahmani, A. (2011). “Removal of cadmium from aqueous solution by nano structured ɣ-alumina.” J. of Water and Wastewater, 80, 9-20. (In Persian)
24- Zavvar Mousavi, S.H., and Arjmandi, A. (2010). “Removal of heavy metals from industrial wastewater by sheep gut waste.” J. of Water and Wastewater, 73, 63-68. (In Persian)
25- Hajiaghababaei, L., Badiei, A., Ganjali, M.R., Heydari, S., Khaniani, Y., and Mohammadi Ziarani, G. (2011). “Highly efficient removal and preconcentration of lead and cadmium cations from water and wastewater samples using ethylenediamine functionalized SBA-15.” J. of Desalination, 266, 182-187.
26- Paulino, A.T., Belfiore, L.A., Kubota, L.T., Muniz, E.C., and Tambourgi, E.B. (2011). “Efficiency of hydrogels based on natural polysaccharides in the removal of Cd2+ ions from aqueous solutions.” J. of Chem. Eng., 168 (1), 68-76.
27- Saeedi, M., Jamshidi, A., Abessi Abssi, O., and Bayat, J. (2009). “Removal of dissolved cadmium by adsorption onto walnut and almond shell charcoal: Comparison with granular activated carbon (GAC).” J. of Water and Wastewater, 70, 16-22. (In Persian)
28- Ghorbani, F., and Younesi, H. (2008). “Biosorption of Cadmium (II) ions by saccharomyces cerevisiae biomass from aqueous solutions.” J. of Water and Wastewater, 68, 33-39. (In Persian)
29- Semerjian, L. (2010). “Equilibrium and kinetics of cadmium adsorption from aqueous solutions using untreated pinus halepensis sawdust.” J. of Hazard. Mater., 173 (1-3), 236-242.