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논문 기본 정보

자료유형
학술저널
저자정보
Ziad T. Abd Ali (University of Baghdad) Zainab Z. Ismail (University of Baghdad)
저널정보
대한환경공학회 Environmental Engineering Research Environmental Engineering Research 제26권 제2호
발행연도
2021.4
수록면
119 - 129 (11page)

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초록· 키워드

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Contamination of surface and groundwater with excessive concentrations of fluoride is of significant health hazard. Adsorption of fluoride onto waste materials of no economic value could be a potential approach for the treatment of fluoride-bearing water. This experimental and modeling study was devoted to investigate the fluoride removal using unmodified waste granular brick (WGB) in a fixed bed running in continuous mode. Characterization of WGB was carried out by FT-IR, SEM, and EDX analysis. The batch mode experiments showed that they were affected by several parameters including contact time, initial pH, and sorbent dosage. The best values of these parameters that provided maximum removal percent (82%) with the initial concentration of F<SUP>-1</SUP> ions (10 mg/L) and agitation speed (200 rpm) were 90 min, 8, and 3 g/100 mL, respectively. The experimental data were found to fit the Freundlich isotherm model. The maximum adsorption capacity of fluoride on WGB was 1.1 mg/g. The continuous mode experiments clearly confirmed the important role of WGB bed in hindering and confining the propagation of the fluoride-loaded plume as well as there was a very good matching (RMSE ≤ 0.0398) with the predicted results obtained by the simulated mathematical model using COMSOL Multiphysics 3.5a software.

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ABSTRACT
1. Introduction
2. Material and Methods
3. Modeling Study
4. Results and Discussion
5. Conclusions
References

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