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بررسی سینتیک و ترمودینامیک جذب کادمیوم و سرب بوسیله دیاتومیت در محیط آبی | ||
| تحقیقات آب و خاک ایران | ||
| مقاله 132، دوره 49، شماره 6، بهمن و اسفند 1397، صفحه 1267-1276 اصل مقاله (735.22 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/ijswr.2018.247444.667810 | ||
| نویسندگان | ||
| مرضیه پیری1؛ ابراهیم سپهر* 2 | ||
| 1دانشجوی دکتری گروه علوم خاک، دانشکده کشاورزی، دانشگاه ارومیه، ارومیه، ایران | ||
| 2دانشیار گروه علوم خاک، دانشکده کشاورزی، دانشگاه ارومیه، ارومیه، ایران | ||
| چکیده | ||
| در این مطالعه سینتیک و ترمودینامیک جذب کادمیوم و سرب از محلولهای آبی به وسیله دیاتومیت مورد بررسی قرار گرفت. جذب فلزات سنگین در زمانهای مختلف توسط مدلهای سینتیکی شبه درجه اول، شبه درجه دوم، ایلوویچ و تابع توانی برازش داده شدند. همچنین، مدلهای لانگمویر، فروندلیچ، تمکین و دوبینین-رادوشکویچ برای برازش دادههای جذب در دماهای (283، 293، 303 و 313 درجه کلوین) بکاربرده شدند. نتایج نشان داد با افزایش زمان تماس و دما جذب کادمیوم و سرب به وسیله دیاتومیت بیشتر میشود. جذب فلزات در زمانهای مختلف با مدل شبه درجه دوم بهترین برازش (1-99/0=R2) و با مدلهای لانگمویر و دوبینین-رادوشکویچ برازش خوبی را نشان دادند. پارامترهای ترمودینامیکی شامل تغییرات انرژی آزاد گیبس (G∆)، آنتالپی (H∆) و آنتروپی (S∆) نشان دادند که فرایند جذب فلزات به وسیله دیاتومیت در محدوده دمایی 283 تا 313 درجه کلوین خودبخودی و گرماگیر است. با توجه به انرژی جذب مدل دوبینین-رادوشکویچ(E)، جذب کادمیوم به وسیله دیاتومیت احتمالا از یک فرایند فیزیکی، (kJ mol− 18>E)، اما جذب سرب احتمالا از یک فرایند شیمیایی پیروی میکند (kJ mol− 18<E). دیاتومیت کارایی بالاتری برای حذف سرب (99%=RE) در مقایسه با کادمیوم (86%=RE) از محلول آبی دارد. بنابراین، دیاتومیت میتواند به عنوان یک جاذب موثر برای جذب کادمیوم و سرب از منابع آب آلوده استفاده شود. | ||
| کلیدواژه‌ها | ||
| کلید واژگان: جذب؛ دیاتومیت؛ سرب؛ کادمیوم؛ پالایش آب | ||
| عنوان مقاله [English] | ||
| Kinetic and thermodynamic studies of Cd and Pb sorption using diatomite from aqueous solutions | ||
| نویسندگان [English] | ||
| marziyeh piri1؛ Ebrahim sepehr2 | ||
| 1Ph. D. Student, Department of Soil Science, Urmia University, Urmia, Iran | ||
| 2Associate Professor, Department of Soil Science, Urmia University, Urmia, Iran | ||
| چکیده [English] | ||
| In this study, kinetic and thermodynamic of Cd and Pb sorption from aqueous solutions were studied using diatomite. Kinetic sorption of heavy metals was analyzed by pseudo-first-order, pseudo-second-order, Elovich and power function equation in terms of their fitness. Freundlich, Langmuir, Temkin, Dubinin-Radushkevich (D-R) isotherm models have also been used for fitness of adsorption data in different temperatures (283, 293, 303 and 313 K). The results showed that the sorption of Cd and Pb by diatomite is intensified by increasing contact time and temperature. Kinetic sorption of heavy metals data showed the best fitness with the pseudo-second-order equation (R2=0.99) and a good fitness with Langmuir and D-R equations. The thermodynamic parameters such as Gibb's Free Energey (ΔG), Enthalpy (ΔH) and Entropy (ΔS) indicated that the adsorption of Cd and Pb ions were spontaneous and endothermic at 283–313 °K. Regarding to the adsorption energy of D–R model, Cd adsorption by diatomite (E< 8 kJ mol− 1) is probably followed by a physical process, but Pb adsorption by diatomite (E> 8 kJ mol− 1) is probably followed by a chemical process Diatomite has a greater efficiency for removal of Pb (RE=99%) than that of Cd (RE=86%) from aqueous solutions. Therefore, diatomite could be used as an efficient sorbent for the sorption of Pb and Cd (II) from polluted water resources. | ||
| کلیدواژه‌ها [English] | ||
| کلید واژگان: حذف, عناصر سنگین, مدلهای سینتیک | ||
| مراجع | ||
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Abad-Valle, P., Alvarez-Ayuso, E., Murciego, A. and Pellitero E. (2016). Assessment of the use of sepiolite amendment to restore heavy metal polluted mine soil. Geoderma, 280, 57-66. Al-Degs, A., Kharasheh, M.A.M. and Tutunji, M.F. (2001). Sorption of lead ions on diatomite and manganes oxides modified diatomite. Water Research, 35, 3724-3728. Allinor I.J. (2007). Adsorption of heavy metal ions from aqueous solution by fly ash. Fuel, 86: 853–857. Babel, S. and Kurniawan, T.A.(2003). Low-cast adsorbents for heavy metals uptake from contaminated water. A review. Journal of Hazardous Materials, 97, 219-243. Bilgin, M. and Tulun, S. (2015). Use of diatomite for the removal of lead ions from water: thermodynamics and kinetics. Biotechnology and Biotechnological Equipment,29(4),696-704,DOI: 10.1080/13102818.2015.1039059. Caliskan, N., Kul, A.R. Alkan, S. Sougut, E.G. and Alacabey, I. (2011). Adsorption of zinc (II) on diatomite and manganese-oxide-modified diatomite: A kinetic and equilibrium study. Journal of Hazardous Materials, 193, 27-36. 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. Journal of Separation and Purification Technology, 38, 273-280. Chiban, M., Zerbet, M, Carja, G. and Sinan. F. (2011). Application of low-cost adsorbents for arsenic removal: A review. Journal of Environmental Chemistry and Ecotoxicology,Vol. 4(5), 91-102. Dae, W. C. and Young, H.K. (2005). Chromium (VI) removal in a semi continues process of hallow fiber membrane with organic extractants. Journal of Chemical Engineering, 22 (4), 894-898. Elouear, Z., Bouzid, J. Boujelben, N. feki, M, and Montiel, A. (2008).The use of exhausted olive cake ash (EOCA) as a low cost adsorbent for removal of toxi ions from aqueous solutions. Fuel, 87, 2582-2589. Flores-Cano J.V., Layva-Ramos, R, Padilla-Ortega, E. and Mendoza-Barron. (2013). Adsorption of heavy metals on diatomite: Mechanism and effect of operating variables. Adsorption Science and Technology, 213(31), 275-291. Franus, M. and Bandura, L. (2014). Sorption of Heavy Metal Ions from Aqueous Solution by Glauconite. Fresenius Environmental Bulletin, 23 (3A), 825-839. Giles, C.H., Smith, D. and Huitson, A. (1974). A general treatment and classification of the solute adsorption isotherm. I. Theoretical. Journal of Colloid and Interface Science, 47, 755–765. Guru, M., Venedik, D. and Murathan. (2008). Removal of trivalent chromium from water using low-cast natural diatomite. Journal of Hazardous Materials, 160(2-3): 318-23. Hamdaoui, O. and Naffrechoux, E. (2007). Modeling of adsorption isotherms of phenol and chlorophenols onto granular activated carbon Part I. Two-parameter models and equations allowing determination of thermodynamic parameters. Journal of Hazardous Materials, 147,381–394. Ho, Y. S. and McKay, G. (1999). Comparative sorption kinetic studies of dye and aromatic compounds onto fly ash. Journal of Environmental Sciences and Health, 34, 1179-1204. Ho, Y.S. and McKay, G. (2002). Application of kinetic models to the sorption of copper (II) on to peat. Adsorption Science and Technology, 20, 797–815. Hossam, E. G. M. M. (2010). Diatomite: Its characterization, modifications and application. Asia journal of materials science. 2(3), 121-136. Jaycock, M.J. and Parfitt, G.D. (1981). Chemistry of Interfaces. Onichester Ellis Horwood Ltd. Juang, R.S. and Chen, M.L. (1997). Application of the Elovich equation to the kinetics of metal sorption with solvent-impregnated resins. Industrial and Engineering Chemistry Research, 36, 813–820 Khraisheh, M.A.M., Al-degs, Y. and Meminn. (2004). Remediation of wastewater containing heavy metals using raw and modified diatomite. Chemical Engineering, 99, 177-184. Lagergren, S. (1898). Zur theorie der Sogenannten Adsorption Gelöster Stoffe, Kungliga Svenska Vetenskaps Akademiens Handlingar. 24,1-39. Lindim, C., de Varennes, A. Torres, M.O. and Mota, A.M. (2001). Remediation of sandy soil artificially contaminated with cadmium using a polyacrylate polymer. Communications in Soil Science and Plant Analysis, 32, 1567-1574. Malik, U. R., Nasany, S. M. and Subhani, M. S. (2005). Sorption potential of sunflower stern for Cr (III) ions from aqueous solution and its kinetic and thermodynamic profile. Journal Talanta, 66, 166-173. Naiya, T. K., Bhattacharya, A. K. and Das, S. K. (2008). Removal of Cd (II) from aqueous solutions using clarified sludge. Journal of Colloid and Interface Science, 325, 48-56. Oustan, S., Heidari, S., Neyshabouri, M.R., Reyhanitabar, A. and Bybordi, A. (2011). Removal of heavy metals from a contaminated calcareous soil using oxalic and acetic acids as chelating agents. International Conference on Environment Science and Engineering, 8,152-155. Paradelo, R., Cambier, P., Jara-Miranda, A., Jaulin A., Doublet J. and Houot S. (2015). Mobility of Cu and Zn in Soil Amended with Composts at Different Degrees of Maturity. Waste Biomass Valor, DOI 10.1007/s12649-016-9641-y. Saffari, M., Karimian, N., Ronaghi, A., Yasrebi, J. and Ghasemi-Fasaei, R. (2015). Stabilization of nickel in a contaminated calcareous soil amended with low-cost amendments. Journal of Soil Science and Plant Nutrition, 15 (4), 896-913. Seifpanahi Shabani, K.S., Doulati Ardejani, F. Badii, K. Ebrahim and Olya, M. (2013). Preparation and characterization of novel nano-mineral for the removal of several heavy metals from aqueous solution: Batch and continuous systems. Arabian Journal of Chemistry, 1-20. Sengil, I.A., and Özacar, M. (2009). Competitive biosorption of Pb(II) , Cu(II) and Zn(II) ions from aqueous solutions onto valonia tannin resin. Journal of Hazardous Materials, 166 (2-3), 1488-1494. Sheng, G., Wang, S. Hu, J. Lu, Y. Li, J. Dong Y. and Wang, X. (2009). Adsorption of Pb (II) on diatomite as affected via aqueous solution chemistry and temperature. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 339, 159–166. Thomas, G. W.(1982). Exchangeable cations. pp 159-164. In: Page, A. L. et al. (Eds). Methods of Soil Analysis, ASA, SSSA, Madison, WI.Vassileva, P.S., Apostolova, M.S., Detcheva, A.K. Vassileva, P.S., Apostolova, M.S., Detcheva, A.K. and Ivanova, E.H. (2013). Bulgarian natural diatomites: modification and characterization. Journal of Chemistry and Chemical Engineering, 67, 342–349. Wang, Y., Lu, Y.F., Chen, R. Z., Ma, L., Jiang, Y. and Wang, H. (2014). Lead ions sorption from waste solution using aluminum hydroxide modified diatomite. Journal of Environmental Protection, 5, 509-516. Xu, D., Zhou, X. and Wang X.K. (2008). Adsorption and desorption of Ni 2+ on Na-montmorillonite: effect of pH, ionic strength, fulvic acid, humic acid and addition sequences. Applied Clay Science, 39:133–141. Zhaolum, W., Yuxiang, Y., Xuping, Q., Jianbo, Z., Yaru, C. and Linxi, N. (2005). Decolouring mechanism of zhejiang diatomite. Application to printing and dyeing wastewater. Environmental Chemistry Letters, 3, 33-37. | ||
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