Assessment and optimization of total ammonia nitrogen adsorption in aqueous phase by sodium functionalized graphene oxide using response surface methodology

Total ammonia nitrogen (TAN) uptake by sodium functionalized graphene oxide as an efficient adsorbent was evaluated and optimized using response surface methodology (RSM). Batch adsorption tests were carried out based on a central composite design experimental plan at 3 pH levels (6, 7, and 8) and 3...

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Bibliographic Details
Published in:Environmental progress 2020-07, Vol.39 (4), p.n/a
Main Authors: Mirahsani, Arghavan, Sartaj, Majid, Giorgi, Javier B.
Format: Article
Language:English
Subjects:
Adsorption
Ammonia
Evaluation
Graphene
nanomaterials
Nitrogen
Optimization
pH effects
Response surface methodology
Sodium
Solid phases
Statistical analysis
Surface chemistry
Temperature
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Summary:Total ammonia nitrogen (TAN) uptake by sodium functionalized graphene oxide as an efficient adsorbent was evaluated and optimized using response surface methodology (RSM). Batch adsorption tests were carried out based on a central composite design experimental plan at 3 pH levels (6, 7, and 8) and 3 temperature levels (5, 25, and 45°C). The equilibrium condition was reached within 5 min. Quadratic models for percent TAN removal (R%) and solid phase TAN concentration (qe) as response were obtained and evaluated by statistical analysis to predict the experimental data. The models were reduced by eliminating insignificant terms. The final reduced models were significant (p 
ISSN:1944-7442
1944-7450
DOI:10.1002/ep.13344