Knowledge Management System Of Institute of process engineering,CAS
| Excellent adsorption of Zn(II) using NaP zeolite adsorbent synthesized from coal fly ash via stage treatment | |
| Zhang, Yanan1; Chen, Yanguang1; Kang, Wei1; Han, Hongjing1; Song, Hua1; Zhang, Chunlei2; Wang, Haiying1; Yang, Xiuqi1; Gong, Xuzhong3; Zhai, Changxiu4; Deng, Jitong1; Ai, Liling1 | |
| 2020-06-10 | |
| Source Publication | JOURNAL OF CLEANER PRODUCTION
 |
| ISSN | 0959-6526 |
| Volume | 258Pages:13 |
| Abstract | Herein, a novel method for the adsorption of metal ions from sewage by NaP zeolite adsorbent synthesized from stage-treated coal fly ash (CFA) was proposed. The pre-treatment of CFA and grading extraction of silicon and aluminum were explored, and the effects of crystallization parameters and sodium salts on the yield and purity of NaP zeolites were investigated. The characteristics of the zeolite product were measured by a series of characterization methods and the adsorption performance was also evaluated. Optimal treatment parameters were calcination at 800 degrees C for 3 h with m(CFA)/m(Na2CO3) = 1:1 and 3 mol/L HCl with m(CFA)/V(HCl) = 1 g: 10 mL, with high extraction efficiencies (Si: 91.40% and Al: 90.20%) through stage treatment method. NaP zeolite product exhibited higher purity (96.66%) and yield (94.24%) at 120 degrees C for 8 h with the addition of NaBr (entirely instead of NaOH, the purity was 90.57% and the yield was 87.82%). The effect of organic steric hindrance was connected with its molecular configuration. NaP zeolite with the addition of polyethylene glycol (PEG) at n(Al2O3)/n(PEG) = 1:5 had the highest single-grain dispersion with the smallest grain size (2.13 mu m). However, NaP zeolite with the addition of cyclohexanol (CyOH) at n(Al2O3)/n(CyOH) = 1:3 had the largest surface area (80.4 m(2)/g). During the Zn(II) adsorption, the appropriate pH value was identified at 5, and the adsorption process followed the pseudo second-order kinetics and Langmuir isotherm adsorption equations. The thermodynamic parameters revealed that the adsorption process was spontaneous and endothermic. NaP zeolite adsorbent exhibited excellent adsorption performance with Zn(II) concentration less than 0.2 ppm in the absorption equilibrium. Moreover, NaP zeolite as an effective adsorbent possessed excellent regeneration. (C) 2020 Elsevier Ltd. All rights reserved. |
| Keyword | Coal fly ash NaP zeolite Sodium salts Steric hindrance agents Zinc ions Adsorption |
| DOI | 10.1016/j.jclepro.2020.120736 |
| Language | 英语 |
| WOS Keyword | HEAVY-METAL IONS ; WASTE-WATER ; AQUEOUS-SOLUTION ; CRYSTAL-GROWTH ; SORPTION ; REMOVAL ; 4A ; CRYSTALLIZATION ; OPTIMIZATION ; TEMPERATURE |
| Funding Project | National Natural Science Foundation of China[51674089] ; National Natural Science Foundation of China[21908021] ; Excellent Youth Foundation of Heilongjiang Province, China[JC2018002] ; Postgraduate Innovative Research Projects of Northeast Petroleum University, China[JYCX_CX03-2018] |
| WOS Research Area | Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology |
| WOS Subject | Green & Sustainable Science & Technology ; Engineering, Environmental ; Environmental Sciences |
| Funding Organization | National Natural Science Foundation of China ; Excellent Youth Foundation of Heilongjiang Province, China ; Postgraduate Innovative Research Projects of Northeast Petroleum University, China |
| WOS ID | WOS:000525323600070 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/40128 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Chen, Yanguang |
| Affiliation | 1.Northeast Petr Univ, Prov Key Lab Oil & Gas Chem Technol, Daqing 163318, Peoples R China 2.Shanghai Normal Univ, Key Lab Resource Chem, Shanghai Key Lab Rare Earth Funct Mat, Educ Minist, Shanghai 200234, Peoples R China 3.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 4.PetroChina, Daqing Petrochem Res Ctr, Daqing 163000, Peoples R China |
| Recommended Citation GB/T 7714 | Zhang, Yanan,Chen, Yanguang,Kang, Wei,et al. Excellent adsorption of Zn(II) using NaP zeolite adsorbent synthesized from coal fly ash via stage treatment[J]. JOURNAL OF CLEANER PRODUCTION,2020,258:13. |
| APA | Zhang, Yanan.,Chen, Yanguang.,Kang, Wei.,Han, Hongjing.,Song, Hua.,...&Ai, Liling.(2020).Excellent adsorption of Zn(II) using NaP zeolite adsorbent synthesized from coal fly ash via stage treatment.JOURNAL OF CLEANER PRODUCTION,258,13. |
| MLA | Zhang, Yanan,et al."Excellent adsorption of Zn(II) using NaP zeolite adsorbent synthesized from coal fly ash via stage treatment".JOURNAL OF CLEANER PRODUCTION 258(2020):13. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment