Facile approach to synthesise zeolite X and its adsorption for Cu (II) and Zn(II). (1st November 2020)

• Record Type: Journal Article
• Authors: Shi, Bin; Chang, Qing
• Is Part Of: Micro & nano letters. Volume 15:Number 13(2020)
• Page Start: 907
• Page End: 909
• Publication Date: 2020-11-01
• Subjects: wastewater treatment -- fly ash -- zeolites -- copper -- particle size -- adsorption -- microwave heating; facile microwave‐assisted two‐step approach -- industrial‐grade reagents -- tap water -- microwave heating method -- extract process -- microwave approach -- phase structure -- particle size distribution -- specific surface areas -- heavy metal ions -- octahedral structure -- Brunauer–Emmett–Teller surface area -- high silicon fly ash -- synthetise zeolite -- single phase zeolite -- synthesis zeolite -- size 1.1 mum -- time 20.0 min -- time 2.0 hour -- Cu -- Zn; Nanotechnology -- Periodicals; Nanostructures -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1049/mnl.2020.0115
• Languages: English
• ISSNs: 1750-0443

Abstract

Abstract : Pure zeolite X was synthesised by a facile microwave‐assisted two‐step approach using high silicon fly ash, industrial‐grade reagents and tap water. First, a microwave heating method was conducted to extract silicon and the extract process was completed in 20 min, which was more effective. Then, a microwave approach was used to synthesis zeolite X. The whole analysis process is <2 h. The composition, phase structure, morphology, particle size distribution, specific surface areas and adsorption of heavy metal ions were evaluated comprehensively. The results show that single phase zeolite X with octahedral structure and an average diameter of 1.10 μm is obtained, and the Brunauer–Emmett–Teller surface area is 583.22 m 2 /g. Especially, the adsorption of Cu 2+ and Zn 2+ are as high as 81.33 and 67.21 mg/g, respectively. It can be concluded that the Letter provides a facile and fast method utilising high silicon fly ash to synthetise zeolite X, which is an excellent adsorbent to remove heavy metal ions.