دورية أكاديمية
Polyethyleneimine-impregnated alkali treated waste bamboo powder for effective dye removal
| العنوان: | Polyethyleneimine-impregnated alkali treated waste bamboo powder for effective dye removal |
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| المؤلفون: | Jian Zhang, Wenjing Lu, Hui Li, Siyan Zhan, Ximo Wang, Changpo Ma, Zumin Qiu |
| المصدر: | Water Science and Technology, Vol 83, Iss 5, Pp 1183-1197 (2021) |
| بيانات النشر: | IWA Publishing, 2021. |
| سنة النشر: | 2021 |
| المجموعة: | LCC:Environmental technology. Sanitary engineering |
| مصطلحات موضوعية: | adsorption, congo red, polyethyleneimine-impregnated, waste bamboo powder, Environmental technology. Sanitary engineering, TD1-1066 |
| الوصف: | In this study, the polyethyleneimine (PEI) modified waste bamboo powder (WBP-Na-PEI) was successfully prepared and applied to adsorbing Congo red (CR) dye from aqueous solution. The obtained materials were characterized by field emission scanning electron microscope, X-ray diffraction, Fourier transform-infrared, and thermogravimetric analysis. The results showed that WBP-Na-PEI(1.8 K-5) was synthesized successfully and PEI uniformly covered the WBP-Na-PEI(1.8 K-5) surface. In the process of adsorption, four kinds of influencing factors were discussed, and the adsorption mechanisms such as kinetics, isotherm, thermodynamics were explored. The maximum adsorption capacity of WBP-Na-PEI(1.8 K-5) was 992.94 mg·g−1 at 298 ± 1 K, and the removal efficiency was over 98%. Pseudo-first-order, pseudo-second-order and intra-particle diffusion models were studied, the results showed that the adsorption process conformed to the pseudo-second-order model, and the rate of this process was controlled by many steps. Furthermore, the removal efficiency of the adsorption kinetics reached 85% within 10 minutes. The results of the isotherm model and thermodynamics showed that the adsorption process was consistent with the Langmuir model and was mainly a spontaneous chemical endothermic process of monolayer. And the removal efficiency of the adsorbent reached 93% at the concentration of 400 mg/L, which can be expected to have a broad prospect in the treatment of CR industrial wastewater. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 0273-1223 1996-9732 |
| العلاقة: | http://wst.iwaponline.com/content/83/5/1183Test; https://doaj.org/toc/0273-1223Test; https://doaj.org/toc/1996-9732Test |
| DOI: | 10.2166/wst.2021.041 |
| الوصول الحر: | https://doaj.org/article/77577a4b2fe245afb0c4f020c89e25f2Test |
| رقم الانضمام: | edsdoj.77577a4b2fe245afb0c4f020c89e25f2 |
| قاعدة البيانات: | Directory of Open Access Journals |
| تدمد: | 02731223 19969732 |
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| DOI: | 10.2166/wst.2021.041 |