بررسی کارایی ژل نانوفیبرکیتین در حذف سرب از محلول‌های آبی

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانش‌آموخته کارشناسی ارشد گروه آلودگی محیط ‌زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران

2 استادیار گروه آلودگی محیط‌ زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان،‌ ایران

3 استادیار گروه مهندسی چوب و کاغذ، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران

چکیده

فلز سنگین سرب یکی از عناصر بسیار خطرناک‌ و سمی است و برای انسان و محیط زیست تهدید جدی محسوب می‌شود. روش جذب سطحی با استفاده از جاذب‌های طبیعی یکی از فناوری‌های مؤثر برای حذف این فلز از فاضلاب است. پژوهش حاضر با هدف بررسی کارایی جاذب طبیعی نانوفیبرکیتین در حذف فلز سرب از محلول‌های آبی انجام شد. برای شناسایی ویژگی‌های فیزیکی، شیمیایی و ساختاری نانوفیبرکیتین، آنالیز XRD، FT-IR و میکروسکوپ الکترونی عبوری TEM انجام گرفت. در سیستم ناپیوسته پارامترهای pH در محدوده 4 تا 9، دز جاذب 1/0 تا 1 گرم در لیتر، زمان تماس15 تا 120 دقیقه، غلظت اولیه فلز سرب 10 تا 50 میلی‌گرم در لیتر و دما 15 تا 40 درجه سلسیوس مورد بررسی قرار گرفت. بر اساس نتایج، بیشترین درصد حذف فلز سرب، در دمای 25 درجه سلسیوس، pH برابر 5، زمان60 دقیقه، دز جاذب 3/0 گرم در لیتر و غلظت سرب 10 میلی‌گرم در لیتر، 45/98 به‌دست آمد. نتایج حاصل از این پژوهش نشان داد که نانوفیبرکیتین با حذف بیش از 98 درصد از سرب‌، به‌عنوان یک جاذب مطلوب برای حذف فلز سرب از محلول‌های آبی محسوب می‌شود.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Investigation of the Efficiency of Chitin Nano-Fiber gel in Removal of Lead from Aqueous Solutions

نویسندگان [English]

  • Saeedeh Rastgar 1
  • Hassan Rezaei 2
  • Hossein Yousefi 3
1 Former Graduate Student in Environmental Pollution, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
2 Assist. Prof. in Environmental Pollution, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
3 Assist. Prof. in Wood and Paper Engineering, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
چکیده [English]

Lead is one of the most dangerous and toxic elements that is considered a serious threat to human and the environment. One of the effective technologies for removing this metal from wastewater is use the adsorption with natural adsorbents. The main objective of this study was to investigate the chitin Nano-fiber as natural absorption for removal of lead metal from aqueous solutions in a discontinuous system. X-ray diffraction (XRD), infrared spectrometer (FT-IR) and transient electron microscopy (TEM) were used to identify the physical, chemical and structural characteristics of chitin Nano-fiber. In the discontinuous system, pH (4-9), absorption dose (0.1-1 g), contact time
(15-120 min), lead initial concentration (10-50 mg/L) and temperature (15-40 °C) were studied. The results were analyzed by one-way ANOVA and Duncan's tests for significant evaluation of changes in parameters. The highest percentage of removal of lead (98.95%.) was obtained at 25 °C, pH 5, 60 min contact time, absorbent dose of 0.3 g and lead concentration of 10 mg/L. The results of this study showed that chitin Nano-fiber is considered as an optimal absorber for removal of lead from aqueous solutions by removing more than 98% of lead from aqueous solutions.

کلیدواژه‌ها [English]

  • Adsorption
  • Chitin Nano-fiber Gel
  • Lead
  • Heavy metal
  • Aqueous solutions

Abidar, F., Morghi, M., Ait Ichou, A., Chiban, M. & Sinan, F. 2016. Removal of orthophosphate ions from aqueous solution using chitin as natural adsorbent. Journal of desalination and Water Treatment, 51(31), 90-101.

Ballav, N., Debnath, S., Pillay, K. & Maity, A. 2015. Efficient removal of Reactive Black from aqueous solution using polyaniline Coated Ligno-Cellulose Composite as a potential adsorbent. Journal of Molecular Liquids, 61, 387-396.

Dotto, G. L., Santos, J. M. N., Tanabe, E. H., Bertuol, D. A., Foletto, E. L., Lima, E. C. & Pavan, F.A. 2017. Chitosan/polyamide nanofibers prepared by forcespinningtechnology: A new adsorbent to remove anionic dyes from aqueous solutions. Journal of Cleaner Production, 144,120-129.

Ge, H., Hua, T. & Chen, X. 2016. Selective adsorption of lead on grafted and crosslinked Chitosan nanoparticles prepared by using Pb2+ as template. Journal of Hazardous Materials, 308, 225-232.

Guo, L., Duban, B. & Zhang, L. 2016. Construction of controllable size silver nanoparticles immobilized on nanofibers of chitin microspheres via green pathway. Journal of Nano Research, 9(7), 2149-2161.

Hong, G., Li, X., Shen, L., Wang, M., Wang, C., Yu, X. & Wang, X., 2015. High recovery of Lead ions from aminated Polyacrylonitrile  nanofibrous affinity membranes with miero/nano structure. Journal of Hazardous Materials, 295, 161-169.

Javanbakht, V., Zilouei, H. & Karimi, K. 2010. "Effect of pH on lead removal from aqueous solution by fungus mucor indicus", Journal of Water and Wastewater, 23(1), 76-83. (In Persian)

Karthik, R. & Meenakshi, S. 2016. Biosorption of Pb(II) and Cd(II) ions from aqueous solution using polyaniline/chitin composite. Journal of Separation Science and Technology, 51(5), 733-742.

Khedr, S.A., Shouman, M.A. & Attia, A.A. 2013.Adsorption studies on the removal of cationic dye from shrimp shell using chitin. Journal of Biointerface Research in Applied Chemistry, 3(1), 507-519.

Kielak, A.M., Cretoiu, M.S., Semenov, A.V., Sorensen, S.J. & van Elsas, J.D. 2013. Bacterial chitinolytic communities respond to chitin and pH alteration in soil. Appl. Environ. Microbiol., 79, 263-272.

Kolodynska, D., Halas, P., Franus, M. & Hubicki, Z. 2017. Zeolite properties improvement by chitosan modification-sorption studies. Journal of Industrial and Engineering Chemistry, 52, 187-196.

Labidi, A., Salaberria, A.M., Fernandes, S.C., Labidi, J. & Abderrabba, M. 2016. Adsorption of copper on chitin-based materials: Kinetic and thermodynamic studies.Journal of the Taiwan Institute of Chemical Engineers,65, 140-148.

Naghizadeh, A. & Momeni, F. 2015. Evaluation of graphen oxide nanoparticles efficacy inchromium and lead removal from aqueous solutions. Journal of Birjand University of Medical Sciences, 22 (1), 27-38.

Rani, M., Agarwal, A. & Negi, Y.S. 2010. Review: Chitosan based hydrogel polymeric beads - As drug delivery system. BioResources, 5(4), 2765-2807.

Sanati, A.M., Bahramifar, N., Mehraban, Z. & Younesi, H. 2013. Lead removal from aqueous solution using date-palm leaf ashin batch system, Journal of Water and Wastewater, 25(4), 51-58. (In Persian)

Shariful Islam, M.D., Sazzed, Sh. Jacky Jia, L., Umma, H. & Bee Chin, A. 2017. Adsorption of divalent heavy metal ion by mesoporous-high surface area chitosan/poly (ethylene oxide) nanofibrous membrane.Carbohydrate Polymers, 157, 57-64.

Shokohi, R., Ehsani, H.R. & Tarlaniazar, M. 2014. Investigation of the removal efficiency of lead and cadmium metals by calcareous coral granules from aqueous media. Science and Technology Environment Journal, 16(1), 111-121. (In Persian)

Soheir, A., Shouman, M. & Attia, A. 2013.Adsorption studies on the removal of cationic dye from shrimp shell using chitin. Journal of Biointerface Research in Applied Chemistry, 3(1), 507-519.

Tempkin, M.I. & Pyzhev, V. 1940. Kinetics of ammonia synthesis on promoted iron catalyst. Acta Phys. Chim. 12, 327-356.

Ziapour, A.R., Hamzeh, Y. & Abyaz, A. 2012. Application of soybean waste as adsorbent of acid orange 7 from aqueous solution. Journal of Separation Science and Engineering, 4(2), 29-38. (In Persian)