Excellent adsorption of Zn(II) using NaP zeolite adsorbent synthesized from coal fly ash via stage treatment

doi:10.1016/j.jclepro.2020.120736

	Excellent adsorption of Zn(II) using NaP zeolite adsorbent synthesized from coal fly ash via stage treatment
	Zhang, Yanan 2; Chen, Yanguang 2; Kang, Wei 2; Han, Hongjing 2; Song, Hua 2; Zhang, Chunlei 3; Wang, Haiying 2; Yang, Xiuqi 2; Gong, Xuzhong 1; Zhai, Changxiu 4
刊名	JOURNAL OF CLEANER PRODUCTION
	2020-06-10
卷号	258 页码:13
关键词	Coal fly ash NaP zeolite Sodium salts Steric hindrance agents Zinc ions Adsorption
ISSN号	0959-6526
DOI	10.1016/j.jclepro.2020.120736
英文摘要	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.
资助项目	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关键词	HEAVY-METAL IONS ; WASTE-WATER ; AQUEOUS-SOLUTION ; CRYSTAL-GROWTH ; SORPTION ; REMOVAL ; 4A ; CRYSTALLIZATION ; OPTIMIZATION ; TEMPERATURE
WOS研究方向	Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000525323600070
资助机构	National Natural Science Foundation of China ; Excellent Youth Foundation of Heilongjiang Province, China ; Postgraduate Innovative Research Projects of Northeast Petroleum University, China
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/40127]
专题	中国科学院过程工程研究所
通讯作者	Chen, Yanguang
作者单位	1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Northeast Petr Univ, Prov Key Lab Oil & Gas Chem Technol, Daqing 163318, Peoples R China 3.Shanghai Normal Univ, Key Lab Resource Chem, Shanghai Key Lab Rare Earth Funct Mat, Educ Minist, Shanghai 200234, Peoples R China 4.PetroChina, Daqing Petrochem Res Ctr, Daqing 163000, Peoples R China
推荐引用方式 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.