Effect Factor of Arsenite and Arsenate Removal by a Manufactured Material: Activated Carbon-Supported Nano-TiO2
Joint Authors
Luo, Qian
Li, Gang
Chen, Meifeng
Qin, Fanxin
Li, Haiyan
Qiang, Yu
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-09-18
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
Carbon substrate-supported nano-TiO2 (a manufactured material) was prepared in this study for arsenic removal.
The removal rates of arsenic were evaluated by batch tests under several simulation conditions including pH, ionic strength, and adsorbent dosage.
Results showed that As(III) and As(V) adsorption reached equilibrium within 10 hours (pH = 8 and ionic strength 0.5 mol/L).
At pH = 8, maximum adsorption efficiency was discovered for the adsorbent.
Removal rate was proportional to the increase in ionic strength.
The removal data were satisfactorily fitted to the pseudo-second-order kinetic model (R2 > 0.9990) and Freundlich equation (R2 ≥ 0.9600) for adsorption thermodynamic behaviors.
New material showed more effective adsorption performance for As(V) than for As(III).
It was found that 15.1800 mg/g As(V) and 13.3800 mg/g As(III) were adsorbed, respectively.
In addition, material properties were studied including the structure of crystallinity, surface morphology, functional groups, and surface texture by XRD, TEM/SEM, FTIR, and BET methods, respectively.
XRD result showed supported nano-TiO2 had the anatase phase.
The size of the microparticle was around 52 nm.
BET results indicated that material surface areas, pore volume, and pore size diameter were 371.17 m2/g, 0.35 cm3/g, and 11.70 nm, respectively.
FTIR spectrum indicated that several functional groups (OH−, Ti-O) existing in supported nano-TiO2 may facilitate the adsorption efficiency.
Mechanistically, supported nano-TiO2 played a key role in promoting adsorption efficiency and converting As(III) to As(V).
Results indicated that the investigated adsorbents possessed an excellent arsenic removal capability.
American Psychological Association (APA)
Luo, Qian& Li, Gang& Chen, Meifeng& Qin, Fanxin& Li, Haiyan& Qiang, Yu. 2020. Effect Factor of Arsenite and Arsenate Removal by a Manufactured Material: Activated Carbon-Supported Nano-TiO2. Journal of Chemistry،Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1182075
Modern Language Association (MLA)
Luo, Qian…[et al.]. Effect Factor of Arsenite and Arsenate Removal by a Manufactured Material: Activated Carbon-Supported Nano-TiO2. Journal of Chemistry No. 2020 (2020), pp.1-12.
https://search.emarefa.net/detail/BIM-1182075
American Medical Association (AMA)
Luo, Qian& Li, Gang& Chen, Meifeng& Qin, Fanxin& Li, Haiyan& Qiang, Yu. Effect Factor of Arsenite and Arsenate Removal by a Manufactured Material: Activated Carbon-Supported Nano-TiO2. Journal of Chemistry. 2020. Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1182075
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1182075