پیوندهای مفید
آمار
| تعداد نشریات | 21 |
| تعداد شمارهها | 691 |
| تعداد مقالات | 10,035 |
| تعداد مشاهده مقاله | 71,039,307 |
| تعداد دریافت فایل اصل مقاله | 62,488,744 |
ارزیابی قدرت جذب اگزروژل تترااتوکسیسیلان برای کاتیونهای Cr3+ و Cu2+ | ||
| شیمى کاربردى روز | ||
| مقاله 11، دوره 12، شماره 42، فروردین 1396، صفحه 167-180 اصل مقاله (824.88 K) | ||
| نوع مقاله: مقاله علمی پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22075/chem.2017.2519. | ||
| نویسندگان | ||
| علی اصل روستا1؛ کمال الدین حق بین* 2 | ||
| 1دانشگاه پیام نور مشهد | ||
| 2پژوهشگاه زیست فناوری و مهندسی ژنتیک | ||
| تاریخ دریافت: 04 مرداد 1394، تاریخ بازنگری: 06 بهمن 1395، تاریخ پذیرش: 05 بهمن 1395 | ||
| چکیده | ||
| .دراین تحقیق توانایی اگزروژل تترااتوکسی سیلان(TEOS) برای جذب دو یون فلزی (+Cr3+,Cu2) ازمحلول های آبی مورد مطالعه قرار گرفت و تاثیر عوامل مختلف مانند زمان، pH، مقدار جاذب و دما روی جذب این فلزات بررسی گردید. همچنین رفتار جذب این دو کاتیون توسط مدل های مختلف ایزوترم مورد ارزیابی قرارگرفت. نتایج جذب بهترین تطابق را با مدل ایزوترم دوبینین- راداشکویچ داشتند که موید قدرت جذب بالاتر +Cr3 با بیشینه ظرفیت جذب 20/65 mg/g نسبت به+Cu2 با بیشینه ظرفیت جذب 10/42 mg/g بودند. مطالعات سینتیکی نیز نشان داد که فرایند جذب در مورد+ Cr3 و+Cu2 از مدل شبه درجه دوم تبعیت می کند. بررسی های ترمودینامیکی نشان از خودبخودی بودن فرآیند جذب کاتیون های فوق دارد. | ||
| کلیدواژهها | ||
| اگزروژل (TEOS)؛ جذب؛ +Cu2+؛ Cr3 | ||
| عنوان مقاله [English] | ||
| Investigation of adsorption of Chromium & Copper ions on TEOS xerogel | ||
| نویسندگان [English] | ||
| Ali Aslrousta1؛ Khamal haghbeen2 | ||
| چکیده [English] | ||
| In this research, TEOS xerogel was produced by sol-gel method and the best adsorbents for removal of heavy metals were chosen by test on this xerogel. TEOS xerogel was used for adsorption of Cr(III) and Cu(II). Various parameters such as contact time, pH, amount of adsorbent and temperature effect on metals adsorption were investigated.Besides , different models of equilibrium adsorption isotherms like Freundlich , Tempkin and Dubinin-Radoshkevich isotherm model were studied and their constants were determined. By searching on final results got from these isotherms were showed that the Dubinin-Radoshkevich isotherm model was fitted well with adsorption data. From the kinetic studies were carried out, it became clear that Pesudo-second order model was fitted with adsorption data of Cr(III) and Cu (II) on TEOS . Thermodynamic investigations were showed that the adsorption process of all heavy metals on adsorbents is spontaneous. | ||
| کلیدواژهها [English] | ||
| Xerogel, Adsorption, Cu2+, Cr3+ | ||
| مراجع | ||
|
[1] M. Moradi, J. Mahmudi, J. Rahchamani, Iran’s Research Capabilities in Water Treatment Using Nanotechnology, ASET, 436 (2010) 436.
[2] H. C. Lukaski, Chromium supplementation and resistance training, effects on body composition, strength, and trace element status of men, American J. Clin. Nutr.,63 (1996) 6954.
[3] H. C. Lukaski, W. A. Siders, J. G. Penland, Chromium picolinate supplementation in women, effects on body weight, composition, and iron status, Nutrition ,Volume, 23 (2007) 187.
[4] H. Z. Mousavi, A. Hosseinifar, V. Jahed, Removal of Cu(II) from wastewater by waste tire rubber ash, J. Serb. Chem. Soc. ,75 (2010) 845.
[5] A. C. Pierre, Sol-gel immobilization of catalytic molecules and applications: Adv. Sci. Technol., 45 (2006) 2127.
]6[م.فضلی،دانشگاه سمنان،مجله شیمی کاربردی،شماره33 (1393) ص35. [7] K. Haghbeen, R. L. Legge, Adsorption of phenolic compounds on some hybrid xerogels, Chem. Eng. J., 150 (2009) 1.
[8] J. D. Mackenzie, E. P. Bescher, Structures, properties and potential applications of ormosils, J. Sol-Gel Sci.Technol., 13 (1998) 371.
[9] O. Mccarthy, E. M. Yeatman, Control of dopant adsorption from aqueous solution into nanoporous sol-gel films, J.Sol-Gel Sci. Technol., 13 (1998) 579.
[10] J. D. Mackenzie, Y. J. Chung, Y. Hu, Rubbery ormosils and their applications, J. Non-Cryst. Solids, 147 (1992) 271.
[11] Flávio A. Pavan, Alzira M.S. Lucho, Reinaldo S. Gonçalves ; Anilinepropylsilica xerogel used as a selective Cu (II) adsorbent in aqueous solution; JCIS 263 (2003) 688.
[12] K.Haghbeen, R.L. Legge, Adsorption of phenolic compounds on some hybrid xerogels, Chem. Eng. J. 150(2009) 1.
[13] Ahmed El Nemr, Azza Khaled, Ola Abdelwahab, Amany El-Sikaily; Treatment of wastewater containing toxic chromium using new activated carbon developed from date palm seed; Journal of Hazardous Materials 152 (2008) 263.
[14] Ahmed El Nemr; Potential of pomegranate husk carbon for Cr (VI) removal from wastewater: Kinetic and isotherm studies; Journal of Hazardous Materials 161 (2009) 132.
[15] N.Daneshvar, D.Salari, S.Aber, Chromium adsorption and Cr (VI) reduction to trivalent; Chromium aqueous solution by soya cake, Journal of Hazardous materials 94 (2002), 41.
[16] Y.C. Chang and D.H. Chen, Preparation and adsorption properties of monodisperse chitosan-bound Fe3O4 magnetic nanoparticles for removal of Cu ions, J.Colloid Interface Sci. 283 (2005), pp. 446.
[17] S.S. Banerjee and D.H. Chen, Fast removal of copper ions by gum arabic modified magnetic nanoadsorbent , J Hazard. Master. 147(2007), pp. 792.
[18] E. FRAMERY AND P.H. MUTIN; 29Si MAS-NMR Study of Silica Gels and Xerogels: Influence of the Catalyst; Journal of Sol-Gel Science and Technology 24(2002), 191.
[19] M. Uysal, I.Ar, Removal of Cr from industrial wastewater by adsorption Part 1: Determination of optimum conditions, J.HAZ.MAT, 149 (2007) 482.
[20] I. A. W. Tan, A. L. Ahmad, B. H. Hameed, Adsorption of basic dye on high-surface-area activated carbon prepared from coconut husk: Equilibrium, kinetic and thermodynamic studies, J.HAZ.MAT 154 (2008) 337.
[21] A. Seker, T. Shahwan, A.Eroglu, S.Yilmaz, Z.Demirel, M.Conk Dalay; Equilibrium, thermodynamic and kinetic studies for the biosorption of aqueous lead,cadmium and nickel ions on spirulina platensis, J.HAZ.MAT, 154 (2008) 973.
[22] A. El Nemr; Potential of pomegranate husk carbon for Cr removal from wastewater: Kinetic and isotherm studies, J.HAZ.MAT, 161 (2009) 132.
[23] M. Jain, V.K.Garg, K.Kardirvelu; Choromium removal from aqueous system using Helianthus annuus (sunflower) stem waste, J.HAZ.MAT, 162 (2009) 365.
[24] A.Celekli, M.Yavuzatmaca, H.Bozkurt; Kinetic and equilibrium studies on the adsorption of reactive red 120 from aqueous solution on Spirogyra majuscule, Chem. Eng. J., 152 (2009) 139.
[25] R.A.Anayurt, A.Sari, M.Tuzen, Equilibrium, thermodynamic and kinetic studies on biosorption of Pb and Cd from aqueous solution by macrofungus (Lactarious scrobiculatus) biomass, Chem. Eng. J., 151 (2009) 255.
[26] I.B.Solangi, S.Memon, M.I.Bhanger; Synthesis and application of a highly efficient tetraester calix arene based resin for the removal of Pb (II) from aqueous environment, ACA, 638 (2009) 146.
[27] ع. صلابت، شیمی سطح، مبانی و کاربردها: با نگرشی بر کاتالیزورهای ناهمگن، انتشارات دانشگاه اراک ،چاپ اول،1380. [28] J. C K, Adsorption of zinc onto bed sediments of the River Ganga; Adsorption models and kinetics, Hydrological Sciences Journal-des Sciences Hydrologiques, 46 (2001) 419.
[29] Y.S.Ho, G.McKay, Pseudo-second order model for sorption processes, Process Biochem. , 34 (1999) 451.
[30] D.Lu, Q.Cao, X.Cao, F.Luo, Removal of pb using the modified lawny grass: Mechanism, kinetics, equilibrium and thermodynamic studies, J.HAZ.MAT, 166 (2009) 239.
[31] R. Altun Anayurt, A. Sari, M. Tuzen, Equilibrium, thermodynamic and kinetic studies on biosorption of Pb(II) and Cd(II) from aqueous solution by macrofungus (Lactarius scrobiculatus) biomass, Chem. Eng. J, 151 (2009) 255.
[32] M. A.Al-Anber, Thermodynamics Approach in the Adsorption of Heavy Metals. in Thermodynamic- Interaction- Studies Solids, Liquids and Gases, InTech China, 35 (2011) 35.
[33] K. Shweta, H. Jha, Rice husk extracted lignin–TEOS biocomposites: Effects of acetylation and silane surface treatments for application in nickel removal. Biotechnology Reports, 7 (2015) 95.
[34] B. Yasemin, T. Zeki, Removal of heavy metals from aqueous solution by sawdust adsorption,Journal of Environmental Sciences , 19 (2007) 160.
[35] F. Veglio, F.Beolchini, Removal of metals by biosorption: a review. Hydrometallurgy, 44(1997) 301.
[36] S. Ahluwalia, D. Goyal, Microbial and plant derived biomass for removal of heavy metals from wastewater, Bioresource Technology , 98 (2007) 2243.
[37] B. P. Gorman, R. A. Orozco-Teran, J. A. Roepsch, H. Dong, R. F. Reidy and D. W. Mueller ,High strength, low dielectric constant fluorinated silica xerogel films , Appl. Phys. Lett., 79(2001) 4010. | ||
|
آمار تعداد مشاهده مقاله: 1,380 تعداد دریافت فایل اصل مقاله: 1,330 |
||