التفاصيل البيبلوغرافية
| العنوان: |
[Adsorption Performance and Mechanism of HZO@SGH for the Removal of Fluoride from Aqueous Solution]. |
| المؤلفون: |
Ma FZ; School of Environment and Energy, South China University of Technology, Guangzhou 510006, China., Zhou SQ; School of Environment and Energy, South China University of Technology, Guangzhou 510006, China.; Guizhou Academy of Sciences, Guiyang 550001, China.; State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, China., Liu ZJ; School of Environment and Energy, South China University of Technology, Guangzhou 510006, China., Zhi LL; School of Environment and Energy, South China University of Technology, Guangzhou 510006, China., Zhou X; School of Environment and Energy, South China University of Technology, Guangzhou 510006, China. |
| المصدر: |
Huan jing ke xue= Huanjing kexue [Huan Jing Ke Xue] 2018 Feb 08; Vol. 39 (2), pp. 828-837. |
| نوع المنشور: |
English Abstract; Journal Article |
| اللغة: |
Chinese |
| بيانات الدورية: |
Publisher: Ke xue zhu ban she Country of Publication: China NLM ID: 8405344 Publication Model: Print Cited Medium: Print ISSN: 0250-3301 (Print) Linking ISSN: 02503301 NLM ISO Abbreviation: Huan Jing Ke Xue Subsets: PubMed not MEDLINE |
| أسماء مطبوعة: |
Original Publication: Beijing : Ke xue zhu ban she, |
| مستخلص: |
Three-dimensional porous composites based on hydrous zirconium oxide and self-assembled graphene hydrogels (HZO@SGH) were successfully synthesized via homogeneous precipitation. HZO@SGH was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS) to investigate the morphology and the defluoridation mechanism. The adsorption performance and mechanism of HZO@SGH for fluoride was investigated via batch adsorption experiments. The results revealed that the adsorption capacity of HZO@SGH for fluoride was obviously higher than that of HZO or SGH singly. The adsorption data for fluoride onto HZO@SGH complied with the pseudo-second-order kinetic model, indicating that the adsorption rate was mainly controlled by chemical adsorption. The adsorption process could be described well with the Dubinin-Radushkevich isotherm model, as the maximum adsorption capacity was approximately 31.79 mg·g -1 , which is higher than that of some zirconium-containing adsorbents, as previously reported. HZO@SGH showed excellent adsorption properties in the fluoride solution contained NO 3 - , Cl - , and a low concentration of SO 4 2- (≤ 10 mg·L -1 ) at low pH (3-6.5). The preparation of HZO@SGH was convenient and environmentally friendly, as it was easily separated from the fluoride solution and did not cause secondary pollution. Hence, the prospect of HZO@SGH in practice was brilliant. |
| فهرسة مساهمة: |
Keywords: Dubinin-Radushkevich isotherm model; adsorption; fluoride; graphene hydrogels; hydrous zirconium oxide; pseudo-second-order kinetic model |
| تواريخ الأحداث: |
Date Created: 20180703 Date Completed: 20190108 Latest Revision: 20190108 |
| رمز التحديث: |
20231215 |
| DOI: |
10.13227/j.hjkx.201705291 |
| PMID: |
29964847 |
| قاعدة البيانات: |
MEDLINE |
