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: | Hui Li, Ximo Wang, Changpo Ma, Wenjing Lu, Siyan Zhan, Jian Zhang, Zumin Qiu |
| المصدر: | Water Science and Technology, Vol 83, Iss 5, Pp 1183-1197 (2021) |
| بيانات النشر: | IWA Publishing, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Thermogravimetric analysis, Environmental Engineering, Materials science, polyethyleneimine-impregnated, 02 engineering and technology, Alkalies, Wastewater, 010501 environmental sciences, 01 natural sciences, Endothermic process, Environmental technology. Sanitary engineering, Industrial wastewater treatment, symbols.namesake, Adsorption, Spectroscopy, Fourier Transform Infrared, Monolayer, Polyethyleneimine, congo red, TD1-1066, 0105 earth and related environmental sciences, Water Science and Technology, Aqueous solution, Langmuir adsorption model, Hydrogen-Ion Concentration, 021001 nanoscience & nanotechnology, Field emission microscopy, Kinetics, adsorption, symbols, Thermodynamics, Powders, 0210 nano-technology, Water Pollutants, Chemical, Nuclear chemistry, waste bamboo powder |
| 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. |
| اللغة: | English |
| تدمد: | 1996-9732 0273-1223 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::944b6520b4af0647a1d5682ef446a553Test http://wst.iwaponline.com/content/83/5/1183Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....944b6520b4af0647a1d5682ef446a553 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19969732 02731223 |
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