Heavy Metal Removal with ZnO-Chitosan Composite

Objective & Hypothesis:In the study, ZnO particles were synthesized by green synthesis using Allium cepa (A. cepa) shells and the Nickel (II) (Ni (II)) removal potential of the ZnO-Ch composite formed with chitosan (Ch) was investigated.

📊

Key Findings & Data:In the study, pH (2,0-6,0), temperature (25-55 oC), amount of adsorbent (0,,25-1,0 g/L), contact time for Ni (II) adsorption in batch system with ZnO-Ch composite. (15-1440 min) and initial pollutant concentration (20-300 mg/L) were examined and optimum removal conditions were investigated.

💡

Conclusion & Impact:In temperature studies, the decrease in adsorption capacity with increasing temperature showed that the system was exothermic.

🔬Design:Modeling & Simulation

📍Scope:Comprehensive Sample

⚙️Variables:ZnO · kitosan · Ni(II)

Abstract

In the study, ZnO particles were synthesized by green synthesis using Allium cepa (A. cepa) shells and the Nickel (II) (Ni (II)) removal potential of the ZnO-Ch composite formed with chitosan (Ch) was investigated. Characterization of the synthesized ZnO-Ch composite was performed by scanning electron microscopy (SEM), Fourier transform infrared (FTIR) and X-ray diffraction (XRD). In the study, pH (2,0-6,0), temperature (25-55 oC), amount of adsorbent (0,,25-1,0 g/L), contact time for Ni (II) adsorption in batch system with ZnO-Ch composite. (15-1440 min) and initial pollutant concentration (20-300 mg/L) were examined and optimum removal conditions were investigated. The optimum conditions obtained were determined as pH 5,0, temperature 25 0C, amount of adsorbent 0,5 g/L, contact time 300 minutes (min). The maximum adsorption capacity of the composite in Ni (II) removal was calculated as 222,22 mg/g according to the Langmuir isotherm model. In temperature studies, the decrease in adsorption capacity with increasing temperature showed that the system was exothermic.

Özet

Çalışmada Allium cepa (A. cepa) kabukları kullanılarak yeşil sentez ile ZnO partikülleri sentezlendi ve kitosan (Ch) ile oluşturulan ZnO- Ch kompozitin Nikel (II) (Ni (II)) giderim potansiyeli incelendi. Sentezlenen ZnO-Ch kompozitin taramalı elektron mikroskopisi (SEM), Fourier transform infrared (FTIR) ve X-ışını difraksiyonu (XRD) ile karakterizasyonu gerçekleştirildi. Çalışmada ZnO-Ch kompoziti ile kesikli sistemde Ni (II) adsorpsiyonu için pH (2,0-6,0), sıcaklık (25-55 oC), adsorban miktarı (0,25-1,0 g/L),temas süresi (15-1440 dk) ve başlangıç kirletici derişimi (20-300 mg/L) incelenerek optimum giderim koşulları incelenmiştir. Elde edilen optium koşullar pH 5,0, sıcaklık 25 0C, adsorban miktarı 0,5 g/L, temas süresi 300 dakika (dk) olarak belirlenmiştir. Ni (II) gideriminde kompozitin maksimum adsorpsiyon kapasitesi Langmuir izoterm modeline göre 222,22 mg/g olarak hesaplandı. Yapılan sıcaklık çalışmalarında artan sıcaklık ile adsorpsiyon kapasitesinin düşmesi sistemin ekzotermik olduğunu gösterdi.

Keywords

ZnO kitosan Ni(II)adsorpsiyon Chitosan Ni (II)adsorption

🔖

Cite This Article

CANBAZ, G. T., AÇIKEL, U., AÇIKEL, Y. S. (2022). Heavy Metal Removal with ZnO-Chitosan Composite. Avrupa Bilim ve Teknoloji Dergisi, Sayı: 35, 603–609. https://ajindex.com/articles/469888

📄 Full Text PDF Viewer

Open in New Tab ↗

↗New Tab

📄

PDF görüntüleyici hazırlanıyor...

References (11)

Dananjaya, S. H. S., Kumar, R. S., Yang, M., Nikapitiya, C., Lee, J., & De Zoysa, M. (2018). Synthesis, characterization of ZnO-chitosan nanocomposites and evaluation of its antifungal activity against pathogenic Candida albicans. International journal of biological macromolecules, 108, 1281-1288.
Deliyanni, E. A., Lazaridis, N. K., Peleka, E. N., & Matis, K. A. (2004). Metals removal from aqueous solution by iron-based bonding agents. Environmental Science and Pollution Research, 11(1), 18-21.
Liu, D., Sun, D., & Li, Y. (2010). Removal of Cu (II) and Cd (II) from aqueous solutions by polyaniline on sawdust. Separation Science and Technology, 46(2), 321-329.
Liu, Z. R., & Zhou, S. Q. (2010). Adsorption of copper and nickel on Na-bentonite. Process safety and environmental protection, 88(1), 62-66.
Nguyen, N. V., Jeong, J., & Lee, J. C. (2013). Removal of chromium (VI) from the leachate of electronic scrap using non‐ionic Amberlite XAD‐7HP resin. Journal of Chemical Technology & Biotechnology, 88(6), 1014-1022.
Qiu, B., Xu, X. F., Deng, R. H., Xia, G. Q., Shang, X. F., & Zhou, P. H. (2019). Construction of chitosan/ZnO nanocomposite film by in situ precipitation. International journal of biological macromolecules, 122, 82-87.
Queiroz, M. F., Teodosio Melo, K. R., Sabry, D. A., Sassaki, G. L., & Rocha, H. A. O. (2014). Does the use of chitosan contribute to oxalate kidney stone formation?. Marine drugs, 13(1), 141-158.
Abdel-Ghani, N. T., El-Chaghaby, G. A., & Helal, F. S. (2015). Individual and competitive adsorption of phenol and nickel onto multiwalled carbon nanotubes. Journal of advanced research, 6(3), 405-415.
Alabbad, E. A. (2021). Efficacy assessment of natural zeolite containing wastewater on the adsorption behaviour of Direct Yellow 50 from; equilibrium, kinetics and thermodynamic studies. Arabian Journal of Chemistry, 14(4), 103041. Barati, A., Asgari, M., Miri, T., & Eskandari, Z. (2013). Removal and recovery of copper and nickel ions from aqueous solution by poly (methacrylamide-co-acrylic acid)/montmorillonite nanocomposites. Environmental Science and Pollution Research, 20(9), 6242-6255.
Barkat, M., Chegrouche, S., Mellah, A., Bensmain, B., Nibou, D., & Boufatit, M. (2014). Application of algerian bentonite in the removal of cadmium (II) and chromium (VI) from aqueous solutions. Journal of Surface Engineered Materials and Advanced Technology, 2014.
Betiha, M. A., Moustafa, Y. M., Mansour, A. S., Rafik, E., & El-Shahat, M. F. (2020). Nontoxic