Academic Journal
An efficient removal of RB5 from aqueous solution by adsorption onto nano-ZnO/Chitosan composite beads
| العنوان: | An efficient removal of RB5 from aqueous solution by adsorption onto nano-ZnO/Chitosan composite beads |
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| المؤلفون: | Çınar, S., Kaynar, Ü.H., Aydemir, T., Çam Kaynar, S., Ayvacıklı, M. |
| المساهمون: | Manisa Celal Bayar University, Faculty of Science and Arts, Chemistry Department, Manisa, Turkey, Manisa Celal Bayar University, Education Faculty, Primary School Science Teaching, Demirci, Manisa, Turkey |
| بيانات النشر: | Elsevier B.V. |
| سنة النشر: | 2017 |
| الوصف: | In this study, the removal of Reactive Black 5 (RB-5) by nano-ZnO/Chitosan composite beads (nano-ZnO/CT-CB) from aqueous solution was investigated. ZnO nanoparticles were prepared by the via the microwave-assisted combustion technique. And then nano-ZnO/Chitosan composite beads were prepared by polymerization in the presence of nano-ZnO and chitosan. Characterization of composite beads were conducted using SEM, TEM, FTIR, TGA and XRD. Several important parameters influencing the removal of RB 5 such as contact time, pH and temperature were investigated systematically by batch experiments. At optimum conditions of pH 4 and adsorbent concentration of 0.2 g, dye removal efficiency was found 76%. Langmuir, Freundlich and Temkin adsorption models were used to describe adsorption isotherms and constants. The maximum adsorption capacity (qm) by Langmuir isotherm has been found to be 189.44 mg/g. Isotherms have also been used to obtain the thermodynamic parameters such as free energy, enthalpy and entropy of adsorption. The positive value of the enthalpy change (32.7 kJ/mol) indicated that the adsorption is an endothermic process. The obtained results showed that the tested adsorbents are efficient and alternate low-cost adsorbent for removal of dyes from aqueous media. © 2016 Elsevier B.V. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | cited By 38; http://hdl.handle.net/20.500.12481/12166; 96 |
| DOI: | 10.1016/j.ijbiomac.2016.12.021 |
| الاتاحة: | https://hdl.handle.net/20.500.12481/12166 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85007170439&doi=10.1016%2fj.ijbiomac.2016.12.021&partnerID=40&md5=368febbad96a52fdb3079d67b5eadbdb https://doi.org/10.1016/j.ijbiomac.2016.12.021 |
| رقم الانضمام: | edsbas.8E20A71E |
| قاعدة البيانات: | BASE |
| DOI: | 10.1016/j.ijbiomac.2016.12.021 |
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