بررسی جذب سطحی رنگزای راکتیو آبی 19 توسط کربن فعال با منشاء پسماند انار

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد، دانشکده مهندسی عمران-محیط‌زیست، دانشگاه صنعتی امیرکبیر، تهران

2 دانشیار دانشکده مهندسی عمران- محیط زیست، دانشگاه صنعتی امیر کبیر، تهران

3 استاد، دانشکده مهندسی عمران- محیط‌زیست، دانشگاه صنعتی امیرکبیر، تهران

چکیده

فاضلاب‌های حاوی رنگزاها خطرات متعددی دارند. از این‌رو روشهای تصفیه ساده و کارآمد این نوع فاضلاب‌ها، مورد توجه محققان بوده است. هدف اصلی این تحقیق، تهیه جاذب با استفاده از ضایعات و بررسی عملکرد آن در حذف رنگزا از محلول آبی بود. به این منظور، کربن فعال بر پایه پسماند انار و فعال‌سازی شیمیایی به‌وسیله اسید فسفریک 37 درصد (PRAC37) تهیه شده و جذب رنگ راکتیو آبی 19 توسط آن مطالعه شد. همچنین، علاوه بر تعیین مشخصات کربن فعال (خصوصیات مورفولوژی و مشخصات بافتی آن)، اثر فاکتورهایی همچون زمان تماس، pH اولیه، میزان جاذب و غلظت اولیه رنگزا بر بازدهی حذف مورد بررسی قرار گرفتند. نتایج نشان دهنده سطح ویژه بالای کربن فعال تهیه شده از پسماند انار (53/572 مترمربع بر گرم) بود. بیشینه حذف رنگزا با راندمان 16/98 درصد از محلول در مدت زمان 5 دقیقه، pH اولیه 11، میزان جاذب 5/3 گرم در لیتر و غلظت اولیه رنگزا 300 میلی‌گرم در لیتر بود. در پایان، مطالعه ایزوترم جذب (لانگمیر، فروندلیچ و تمکین) و سینتیک جذب (مرتبه شبه اول، مرتبه شبه دوم، الوویچ و نفوذ بین ذره‌ای) انجام شد که نتایج، نشان‌دهنده مطابقت فرایند یاد شده از ایزوترم لانگمیر (955/0R2=) و سینتیک مرتبه شبه دوم (997/0R2=) بود.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

The Study of the Adsorption of Reactive Blue 19 Dye by Activated Carbon from Pomegranate Residue

نویسندگان [English]

  • elham Radaee 1
  • Seyed Mohammad Reza Alavi Moghaddam 2
  • Mokhtar Arami 3
1
2 Assoc. Prof. of Civil and Environmental Eng., Amirkabir University of Technology (AUT), Tehran
3
چکیده [English]

Wastewater containing dyes can be dangerous and toxic. Therefore, simple and efficient treatment methods are investigated by the researchers. The main purpose of this research is preparing adsorbent from residuals and studying the performance of dye removal from aqueous solution. For this purpose, activated carbon based on pomegranate residual was prepared by phosphoric acid (37%) activation and was used to remove reactive blue 19 from aqueous solution. In addition to characterization of the activated carbon (morphological and textural properties of activated carbon), effect of operation parameters such as contact time, initial pH, adsorbent dose and initial dye concentration were evaluated on the dye removal. The surface area (SBET) of the activated carbon was determined as 572.53 m2/g and the maximum dye removal efficiency (98.16%) was observed at 5 minutes contact time, initial pH 11, 3.5 gr/L the adsorbent and 300 mg/L initial dye concentration. Finally, adsorption isotherms (Langmuir, Freundlich and Temkin) and kinetic studies (the pseudo first-order, pseudo-second-order, Elovich and intraparticle diffusion kinetic models) studies showed the adsorption process follows a Langmuir isotherm equation (R2=0.955) and the pseudo-second order kinetic model (R2=0.997).

کلیدواژه‌ها [English]

  • Adsorption Process
  • Activated carbon
  • Reactive Blue 19
  • Pomegranate Residual
  • Chemical Activation
1. Amin, N.K. (2009). “Removal of direct blue-106 dye from aqueous solution using new activated carbons developed from pomegranate peel: Adsorption equilibrium and kinetics.” J. of Hazardous Materials, 165, 52-62.
2. Jamalinejad, M., Taebi, A., and Mortazavi, S. M. (2011). “Removal of color from aqueous solutions containing textile dyes by dolomite waste.” J. of Water and Wastewater, 80, 30-36. (In Persian)
3. Meshko, V., Markovska, L., Mincheva, M., and Rodrigues, A.E. (2001), “Adsorption of basic dyes on ranular activated carbon and natural zeolite.” Water Research, 35, 3357-3366.
4. Zhong, Z., Yang, Q., Li, X., Luo, K., Liu, Y., and Zeng, G. (2012). “Preparation of peanut hull-based activated carbon by microwave-induced phosphoric acid activation and its application in Remazol Brilliant Blue R adsorption.” Industrial Crops and Products, 37, 178-185.
5. Uçar, S., Erdem, M., Tay, T., and Karagöz, S. (2009). “Preparation and characterization of activated carbon produced from pomegranate seeds by ZnCl2 activation.” Applied Surface Science, 255, 8890-8896.
6. Ghaedi, M., Tavallali, H., Sharifi, M., Kokhdan, S. N., and Asghari, A. (2012). “Preparation of low cost activated carbon from Myrtus communis and pomegranate and their efficient application for removal of Congo red from aqueous solution.” Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy, 86, 107-114.
7- Dinçer, A. R., Güneş, Y., Karakaya, N., and Güneş, E. (2007). “Comparison of activated carbon and bottom ash for removal of reactive dye from aqueous solution.” Bioresource Technology, 98, 834-839.
8. Shafaei, A., Zokaie, F., and Kaghazchi, T. (2004). “Equilibrium adsorption of mercury ions.” 9th National Seminar of Iranian Chemical Eng., Iran University of Science and Tech., Tehran. (In Persian)
9. Ho, Y. (2006). “Review of second-order models for adsorption systems.” J. of Hazardous Materials, 136, 681-689.
10. Dolas, H., Sahin, O., Saka, C., and Demir, H. (2011). “A new method on producing high surface area activated carbon: The effect of salt on the surface area and the pore size distribution of activated carbon prepared from pistachio shell.” Chemical Engineering Journal, 166, 191-197.
11. Azizi, A., Alavi Moghaddam, M.R., and Arami, M. (2011). “Wood waste from mazandaran wood and the paper industry as a low cost adsorbent for removal of a reactive dye.” J. of Residuals Science and Technology, 8, 21-28.
12. Gök, Ö., Özcan, A.S., and Özcan, A. (2010). “Adsorption behavior of a textile dye of Reactive Blue 19 from aqueous solutions onto modified bentonite.” Applied Surface Science, 256, 5439-5443.
13. Mohan, S.V., Chandrasekhar Rao, N., and Karthikeyan, J. (2002). “Adsorptive removal of direct azo dye from aqueous phase on to coal based sorbents: A kinetic and mechanistic study.” J. of Hazardous Materials, 90, 189-204.
14. Calvete, T., Lima, E.C., Cardoso, N.F., Vaghetti, J.C.P., Dias, S.L.P., and Pavan, F.A. (2010). “Application of carbon adsorbents prepared from Brazilian-pine fruit shell for the removal of reactive orange 16 from aqueous solution: Kinetic, equilibrium, and thermodynamic studies.” J. of Environmental Management, 91, 1695-1706.
15. Kannan, N., and Sundaram, M.M. (2001), “Kinetics and mechanism of removal of methylene blue by adsorption on various carbons e a comparative study.” Dyes and Pigments, 51, 25-40.
16. Azizi, A., Alavi Moghaddam, M.R., and Arami, M. (2011). “Comparison of three treated pulp and paper sludges as adsorbents for RB19 dye removal.” J. of Residuals Science and Technology, 8, 117-124.
17. Azizi, A., Alavi Moghaddam, M.R., and Arami, M. (2010), “Performance of pulp and paper sludge for reactive blue 19 dye removal from aqueous solutions: Isotherm and kinetic study.” J. of Residuals Science and Technology, 7, 173-170.
18. Azizi, A. (2010). “Optimization of color removal using indigenous adsorbent.” M.Sc. Thesis, Dept. of Civil and Environmetal Eng., Amirkabir University of Tech., Tehran. (In Persian)
19. Hasan, M., Ahmad, A.L., and Hameed, B.H. (2008). “Adsorption of reactive dye onto cross-linkedchitosan/oil palm ash composite beads.” Chemical Engineering Journal, 136, 164-172.
20. Xue, Y., Hou, H., and Zhu, S. (2009), “Adsorption removal of reactive dyes from aqueous solution by modified basic oxygen furnace slag: Isotherm and kinetic study.” Chemical Engineering Journal, 147, 272-279.
21. Cicek, F., Ozer, D., Ozer, A., and Ozer A. (2007). “Low cost removal of reactive dyes using wheat bran.” J. of Hazardous Materials, 146, 408-416.
22. Jimenez, M.M.D., Gonzalez, M.P.E, and Cid, A.A.P. (2005). “Adsorption interaction between natural adsorbents and textile dyes in aqueous solution.” Colloids and Surfaces A: Physicochemical and Engineering Aspects, 254, 107-114.
23.Nethaji, S., Sivasamy, A., Thennarasu, G., and Saravanan, S. (2010), “Adsorption of malachite green dye onto activated carbon derived from borassus aethiopum flower biomass.” J. of Hazardous Materials, 181, 271-280.
24. Hameed, B.H., Ahmad, A.A., and Aziz, N. (2009), “Adsorption of reactive dye on palm-oil industry waste: Equilibrium, kinetic and thermodynamic studies.” Desalination, 247, 551-560.
25. Rodríguez, A., García, J., Ovejero, G., and Mestanza, M. (2009). “Adsorption of anionic and cationic dyes on activated carbon from aqueous solutions: Equilibrium and kinetics.” J. of Hazardous Materials, 172, 1311-1320.