Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.13091/364
Title: Production of red mud based nanofibers and their potential in arsenate removal from waste water
Authors: Çetinkaya, Zeynep
Kalem, Volkan
Keywords: Arsenic Adsorption
Electrospinning
Nanofiber
Recovery
Red Mud
Aqueous-Solutions
Arsenic(V) Removal
Adsorption
Iron
Recovery
Nanoparticles
Fluoride
Dioxide
As(Iii)
Acid
Publisher: TAYLOR & FRANCIS INC
Abstract: In this study, it was aimed to utilize red mud (RM, an industrial waste material) as a nanofiber adsorbent in arsenate removal from waste water. RM, obtained from Seydisehir Aluminum Plant (Konya, Turkey), was leached using nitric acid in order to recover metallic elements such as Fe, Al, and Ti. Oxides and hydroxides of these elements are known to have a high affinity toward arsenic. Metallic salt solution, obtained after leaching treatment, was used to produce nanofibers via electrospinning method to get an adsorbent material with high surface area. Compositional, phase structural, microstructural, and thermal analyses were conducted using AAS, XRF, XRD, SEM, and DT/TGA. Organic removal from nanofibers were conducted at 600 degrees C for 5 h, based on the DT/TGA results. After heat treatment, nanofibers with diameters ranging from 45 to 58 nm were obtained. Performance of nanofibers in As(V) (arsenate) removal from waste water was also evaluated with different amount of nanofibers (1-3 mg/L), arsenate concentration (5-100 ppm), and contact time (10-120 min). Experimental results showed that the fastest and highest removal efficiency (similar to 80.2%) was obtained for 3 mg/L nanofiber and 10 ppm arsenate concentration at 90 min. Kinetic studies revealed that the pseudo-second-order kinetic model was dominantly active in the adsorption process.
URI: https://doi.org/10.1080/01932691.2021.1985512
https://hdl.handle.net/20.500.13091/364
ISSN: 0193-2691
1532-2351
Appears in Collections:Mühendislik ve Doğa Bilimleri Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections

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