حذف رقابتی آلاینده های کاتیونی با استفاده از نانوجاذب های GO و GO-NH2 و مقایسه کارایی سیستم تک جزئی و دو جزئی

نوع مقاله : مقاله پژوهشی

نویسندگان

پژوهشکده علوم محیطی، دانشگاه شهید بهشتی، تهران، ایران

چکیده

بسیاری از پساب‌های صنعتی حاوی آلایندههای کاتیونی متنوعی از جمله فلزات سنگین و رنگهای آلی با ساختارهای تجریه‌ناپذیر هستند که تهدید جدی برای سلامت عمومی و محیط زیست به‌شمار می‌روند. در مطالعه حاضر نانوجاذب‌های اکسید گرافن (GO ) و اکسید گرافن اصلاح شده با -3آمینو پروپیل تری اتوکسی سیلان  ( GO-NH2 )  به منظور حذف یون‌های فلزی سرب + ،)Pb2کادمیوم (+ )Cd2و رنگ کاتیونی متیلن بلو (MB ) در محلول‌های آبی در سیستم ناپیوسته تک جزئی و دوجزئی       (Pb2+-Cd2+، Cd2+-MB ،Pb2+-MB ) سنتز گردید. ساختار کریستالی و شیمی سطح نانوجاذب‌ها با استفاده از آنالیزهای پراش اشعه ایکس ( ،)XDRطیف سنج مادون قرمز (FTIR ) و میکروسکوپ الکترونی روبشی (SEM ) شناسایی گردید. در سیستم تک جزئی، بیشترین درصد جذب با استفاده از جاذب GOبرای 99 MBدرصد، 72/5 Cd+2درصد و 49/5 Pb+2 درصد به دست آمد. نتایج جذب سیستم تک جزئی با ،GONH2انتخاب پذیری + Cd2+>MB<Pb2با درصد جذب %73 ،%90 و %35را نشان داد. در سیستم جذب دوجزئی با ،GOدرصد جذب کادمیوم و سرب در مجاورت متیلن بلو نسبت به سیستم تکجزئی حدودا کاهش 10درصدی یافته است (Rq<1.) بر اساس محاسبه نسبت ظرفیت جذب (Rq,Cd2+=1) نشان می‌دهد که ظرفیت جذب + Cd2در حضور MBبا استفاده از GO-NH2تغییری نکرد. درحالی که درصد جذب + Pb2در سیستم جذب Pb2+-MBبر روی ، GO-NH2کاهش قابل توجهی داشته است (%15.) نتایج حاصل از سینتیک جذب MBبا استفاده از GOو + Pb2بر روی GO-NH2در سیستم تک جزئی نشان داد که سینتیک جذب نسبتا سریع و از نوع شبه درجه دوم بود.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Competitive Removal of Cationic Pollutants Using GO and GO-NH2 Nano-adsorbents and Efficiency Comparison of Single and Binary Component Systems

نویسندگان [English]

  • A. Shahbazi
  • Z. Salahshour
Environmental Sciences Research Institute, Shahid Beheshti University, Tehran, Iran
چکیده [English]

Many industrial wastewater containing various cationic pollutants including heavy metals and organic dyes with non-degradable structures that are considered as a serious threat to public health and the environment. In this study, nano-absorbers including graphene oxide (GO) and graphene oxide modified with 3-aminopropyltriethoxysilane (GO-NH2) was successfully synthesized and characterized by Scanning Electron Microscope (SEM), X-Ray Diffraction (XRD) and Fourier Transform Infrared (FTIR) analysis. GO and GO-NH2 were applied to remove Pb2+ and Cd2+ metal ions, and methylene blue (MB) cationic dye from aqueous solution in single and binary component systems (Pb2+-Cd2+, Pb2+-MB, Cd2+-MB). In the single component system, the maximum absorption of 99%, 72.5% and 49.5% was obtained for MB, Cd2+ and Pb2+, respectively, by using GO. In the case of GO-NH2, maximum absorption of 90%, 73% and 35% was obtained for Pb2+, Cd2+ and MB, respectively, in single-component system. In the presence of MB dye, removal percentage of Pb2+ and Cd2+ showed a reduction of 10% compared to the single component system (Rq <1) by using GO. By using GO-NH2, in the metal-dye binary systems, the removal percentage of Pb2+ and Cd2+ showed a reduction of 15% and around zero, respectively, to the single component system. The adsorption rate of MB onto GO and Pb2+ onto GO-NH2 were in good agreement with pseudo-second order model (R2=99; k2=0.0002g mg-1 min-1, R2=95; k2=0.001g mg-1 min-1 respectively).

کلیدواژه‌ها [English]

  • GO
  • GO-NH2
  • Simultaneous Adsorption
  • Lead
  • Cadmium
  • Methylene blue

مراجع

[1] F. Zhao, E. Repo, D. Yin, Y. Meng, S. Jafari, M. Sillanpää, EDTA-cross-linked β-cyclodextrin: an environmentally friendly bifunctional adsorbent for simultaneous adsorption of metals and cationic dyes, Environme.
[2] V.S. Mane, I.D. Mall, V.C. Srivastava, Use of bagasse fly ash as an adsorbent for the removal of brilliant green dye from aqueous solution, Dyes and Pigments, 73(3) (2007) 269-278.
[3] P. Borthakur, P.K. Boruah, N. Hussain, B. Sharma, M.R. Das, S. Matić, D. Řeha, B. Minofar, Experimental and molecular dynamics simulation study of specific ion effect on the graphene oxide surface and investigation of the influence on reactive extraction of model dye molecule at water–organic interface, The Journal of Physical Chemistry C, 120(26) (2016) 14088-14100.
[4] F.C. Moreira, R.A. Boaventura, E. Brillas, V.J. Vilar, Electrochemical advanced oxidation processes: a review on their application to synthetic and real wastewaters, Applied Catalysis B: Environmental, 202 (2017) 217-261.
[5] Z. Dong, D. Wang, X. Liu, X. Pei, L. Chen, J. Jin, Bio-inspired surface-functionalization of graphene oxide for the adsorption of organic dyes and heavy metal ions with a superhigh capacity, Journal of Materials Chemistry A, 2(14) (2014) 5034-5040.
[6] G. Ghanizadeh, A. Azari, H. Akbari, R. Rezaei Kalantary, Performance Evaluation of Nanocomposit Magnetic Graphene Sheet-Iron Oxide in Removal of Nitrate from Water Using Taguchi Experimental Design, Journal of Mazandaran University of Medical Sciences, 25(127) (2015) 49-64.(in persion)
[7] A. Azari, M. Gholami, Z. Torkshavand, A. Yari, E. Ahmadi, B. Kakavandi, Evaluation of basic violet 16 adsorption from aqueous solution by magnetic zero valent iron-activated carbon nanocomposite using response surface method: isotherm and kinetic studies, Journal of Mazandaran University of Medical Sciences, 24(121) (2015) 333-347(In persion).
[8] A. Shahbazi, H. Younesi, A. Badiei, Batch and fixed-bed column adsorption of Cu (II), Pb (II) and Cd (II) from aqueous solution onto functionalised SBA-15 mesoporous silica, The Canadian Journal of Chemical Engineering, 91(4) (2013) 739-750.
[9] T. Nguyen, H. Ngo, W. Guo, J. Zhang, S. Liang, Q. Yue, Q. Li, T. Nguyen, Applicability of agricultural waste and by-products for adsorptive removal of heavy metals from wastewater, Bioresource technology, 148 (2013) 574-585.
[10] V. Gupta, Application of low-cost adsorbents for dye removal–a review, Journal of environmental management, 90(8) (2009) 2313-2342.
[11] W.S. Hummers Jr, R.E. Offeman, Preparation of graphitic oxide, Journal of the american chemical society, 80(6) (1958) 1339-1339.
[12] Y. Lin, J. Jin, M. Song, Preparation and characterisation of covalent polymer functionalized graphene oxide, Journal of Materials Chemistry, 21(10) (2011) 3455-3461.
[13] S. Wang, E. Ariyanto, Competitive adsorption of malachite green and Pb ions on natural zeolite, Journal of Colloid and Interface Science, 314(1) (2007) 25-31.
[14] W. Zhou, Z.L. Wang, Scanning microscopy for nanotechnology: techniques and applications, Springer science & business media, 2007.
[15] J. Liang, Y. Huang, L. Zhang, Y. Wang, Y. Ma, T. Guo, Y. Chen, Molecular-level dispersion of graphene into poly (vinyl alcohol) and effective reinforcement of their nanocomposites, Advanced Functional Materials, 19(14) (2009) 2297-2302.
[16] A.C. Ferrari, Raman spectroscopy of graphene and graphite: disorder, electron–phonon coupling, doping and nonadiabatic effects, Solid state communications, 143(1-2) (2007) 47-57.
[17] V. Hernández-Montoya, M.A. Pérez-Cruz, D.I. Mendoza-Castillo, M. Moreno-Virgen, A. Bonilla-Petriciolet, Competitive adsorption of dyes and heavy metals on zeolitic structures, Journal of environmental management, 116 (2013) 213-221.
[18] U.A. Guler, M. Sarioglu, Mono and binary component biosorption of Cu (II), Ni (II), and Methylene Blue onto raw and pretreated S. cerevisiae: equilibrium and kinetics, Desalination and Water Treatment, 52(25-27) (2014) 4871-4888.
[19] D. Chen, H. Zhang, K. Yang, H. Wang, Functionalization of 4-aminothiophenol and 3-aminopropyltriethoxysilane with graphene oxide for potential dye and copper removal, Journal of hazardous materials, 310 (2016) 179-187.
[20] M. Algarra, M.V. Jiménez, E. Rodríguez-Castellón, A. Jiménez-López, J. Jiménez-Jiménez, Heavy metals removal from electroplating wastewater by aminopropyl-Si MCM-41, Chemosphere, 59(6) (2005) 779-786.
نشریه مهندسی عمران امیرکبیر
دوره 50، شماره 5
آذر و دی 1397
صفحه 919-928

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