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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2023.6
- 수록면
- 145 - 163 (19page)
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초록· 키워드
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In this study, longan seeds - an agricultural by-product was used to fabricate activated carbon (LSAC) through two-step pyrolysis with pre-carbonization at low temperature in the first step and then activation by H₃PO₄. LSAC with large surface area and porous structure exhibits an excellent capacity of absorption towards both cationic dyes (methylene blue (MB), rhodamine-B (RhB)) and anionic dyes (methyl orange (MO), congo red (CR)). Experimental data can be described well by the pseudo-second kinetic model. The maximum adsorption capacity based on Langmuir isotherm model was found as 502.84; 397.77; 464.66 and 350.64 mg.g<SUP>−1</SUP> for MB, RhB, MO and CR, respectively. The adsorption of MB, RhB and CR on LSAC is spontaneous and endothermic, while that for MO is spontaneous but exothermic. Furthermore, the adsorption mechanism of dyes on LSAC was also studied showing that it can occur by electrostatic interaction, hydrogen bonding, the filling of pores involving the interaction between dye ions with specific functional groups such as -OH, -COOH, -NH₂ and -PO₄<SUP>3-</SUP> on the LSAC surface. These results suggest that LSAC material may be envisaged as a promising adsorbent for treatment of wastewater in textile industries.
목차
ABSTRACT
1. Introduction
2. Experimental
3. Results and Discussion
4. Conclusions
References
참고문헌 (71)
참고문헌 신청
Al-Qodah Z, Lafi WK, Al-Anber Z, Al-Shannag M, and Harahsheh A. Adsorption of methylene blue by acid and heat treated diatomaceous silica. Desalination. 2007; 217(1-3):212-224.
Mahamad MN, Zaini MAA, and Zakaria ZA. Preparation and characterization of activated carbon from pineapple waste biomass for dye removal. Inter Biodeter & Biodegrad. 2015;102:274-280.
Ahmed MJ and Dhedan SK. Equilibrium isotherms and kinetics modeling of methylene blue adsorption on agricultural wastes-based activated carbons. Fluid Phase Equilibria. 2012;317:9-14.
Das M. and Bhattacharyya KG. Oxidation of Rhodamine B in aqueous medium in ambient conditions with raw and acid-activated MnO2, NiO, ZnO as catalysts. J Mol Catal A: Chem. 2014;391:121-129.
Faouzi AM, Nasr B, and Abdellatif G. Electrochemical degradation of anthraquinone dye Alizarin Red S by anodic oxidation on boron-doped diamond. Dyes and Pigments. 2007;73:86-89.
Mahamad MN, Zaini MAA, and Zakaria ZA. Preparation and characterization of activated carbon from pineapple waste biomass for dye removal. Inter Biodeter & Biodegrad. 2015;102:274-280.
Ahmed MJ and Dhedan SK. Equilibrium isotherms and kinetics modeling of methylene blue adsorption on agricultural wastes-based activated carbons. Fluid Phase Equilibria. 2012;317:9-14.
Das M. and Bhattacharyya KG. Oxidation of Rhodamine B in aqueous medium in ambient conditions with raw and acid-activated MnO2, NiO, ZnO as catalysts. J Mol Catal A: Chem. 2014;391:121-129.
Faouzi AM, Nasr B, and Abdellatif G. Electrochemical degradation of anthraquinone dye Alizarin Red S by anodic oxidation on boron-doped diamond. Dyes and Pigments. 2007;73:86-89.
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