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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2020.4
- 수록면
- 205 - 211 (7page)
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초록· 키워드
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Chlorhexidine digluconate (CHD) in the aquatic environment causes irreversible change to microbes, making them resistant to biodegradation, which needs remediation other than biological process. Adsorption study was performed for the removal of CHD on fly ash (FA) as a function of pH and ionic strength. Experimental result has been validated by characterization using Scanning electron microscopy, Fourier Transform-Infrared Spectroscopy and Brunauer-Emmett-Teller. CHD adsorption with FA showed an increasing trend with an increase in pH. Variation in pH proved to be an influential parameter for the surface charge of adsorbent and the degree of ionization of the CHD molecules. The adsorption capacity of CHD decreased from 23.60 mg g-1 to 1.13 mg g-1, when ionic strength increased from to M. The adsorption isotherms were simulated well by the Freundlich isotherm model having R2 = 0.98. The Lagergren’s model was incorporated to predict the system kinetics, while the mechanistic study was better explained by pseudo-second order for FA. On the basis of operational conditions and cost-effectiveness FA was found to be more economical as an adsorbent for the adsorption of CHD.
목차
ABSTRACT
1. Introduction
2. Materials and Methods
3. Results and Discussion
4. Conclusions
References
참고문헌 (35)
참고문헌 신청
Khraisheh M, Kim J, Campos L, et al. Removal of pharmaceutical and personal care products (PPCPs) pollutants from water by novel TiO2-Coconut Shell Powder (TCNSP) composite. J. Ind. Eng. Chem. 2014;20:979-987.
Gopakumar KM, Santosh MR. An unhealthy future for the Indian pharmaceutical industry? 3rd World Resurgence 2012;259:9-14.
Fent K, Weston AA, Caminada D. Ecotoxicology of human pharmaceuticals. Aquat. Toxicol. 2005;76:122-159.
Sousa CP, de Oliveira RC, Freire TM, et al. Chlorhexidine digluconate on chitosan-magnetic iron oxide nanoparticles modified electrode: Electroanalysis and mechanistic insights by computational simulations. Sens. Actuat. B. Chem. 2017;240:417-425.
Das R, Ghosh S, Bhattacharjee C. A green practice for pharmaceutical drug chlorhexidine digluconate treatment and ecotoxicity assessment. J. Water Process Eng. 2015;7:266-272.
Gopakumar KM, Santosh MR. An unhealthy future for the Indian pharmaceutical industry? 3rd World Resurgence 2012;259:9-14.
Fent K, Weston AA, Caminada D. Ecotoxicology of human pharmaceuticals. Aquat. Toxicol. 2005;76:122-159.
Sousa CP, de Oliveira RC, Freire TM, et al. Chlorhexidine digluconate on chitosan-magnetic iron oxide nanoparticles modified electrode: Electroanalysis and mechanistic insights by computational simulations. Sens. Actuat. B. Chem. 2017;240:417-425.
Das R, Ghosh S, Bhattacharjee C. A green practice for pharmaceutical drug chlorhexidine digluconate treatment and ecotoxicity assessment. J. Water Process Eng. 2015;7:266-272.
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