CAS OpenIR
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 PublicationJOURNAL OF CLEANER PRODUCTION
ISSN0959-6526
Volume258Pages:13
AbstractHerein, 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.
KeywordCoal fly ash NaP zeolite Sodium salts Steric hindrance agents Zinc ions Adsorption
DOI10.1016/j.jclepro.2020.120736
Language英语
WOS KeywordHEAVY-METAL IONS ; WASTE-WATER ; AQUEOUS-SOLUTION ; CRYSTAL-GROWTH ; SORPTION ; REMOVAL ; 4A ; CRYSTALLIZATION ; OPTIMIZATION ; TEMPERATURE
Funding ProjectNational 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 AreaScience & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology
WOS SubjectGreen & Sustainable Science & Technology ; Engineering, Environmental ; Environmental Sciences
Funding OrganizationNational Natural Science Foundation of China ; Excellent Youth Foundation of Heilongjiang Province, China ; Postgraduate Innovative Research Projects of Northeast Petroleum University, China
WOS IDWOS:000525323600070
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/40128
Collection中国科学院过程工程研究所
Corresponding AuthorChen, Yanguang
Affiliation1.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.
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