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Enhancement of the Activated Carbon over Methylene Blue Removal Efficiency via Alkali-Acid Treatment.
- Source :
-
AIP Conference Proceedings . 2019, Vol. 2124 Issue 1, p020046-1-020046-7. 7p. - Publication Year :
- 2019
-
Abstract
- The removal of contaminated dyes in wastewater via Activated Carbon (AC) technology is a promising alternative to current conventional pollution-free technologies. Herein, the commercial AC with enhanced adsorption performance capacity were comprehensively investigated via modulating with the alkali-acid treatment. The removal of a highly concentrated methylene blue solution was evaluated via a commercial AC treated with deionized water (AC-DI), potassium hydroxide (AC-KOH) and nitric acid (AC-HNO3). The physicochemical properties of the modified AC were characterized using Fourier Transform Infra-Red (FTIR), X-ray Diffraction (XRD), Field Emission Scanning Electron Microscope (FESEM) and Surface area analyzer and Porosity analysis (SAP). The AC modified with deionized water (AC-DI) exhibited superior adsorption performance with 99% of methylene blue removal within 8 hours. Gratifyingly, the AC-DI has the fastest adsorption uptake within 2 hours in comparison to AC, AC-KOH and AC-HNO3 samples. The superior methylene blue removal performance of AC-DI was attributed to the enhanced surface group functionalization over the surface of AC evidenced from the FTIR analysis. In addition, the better crystallinity of AC-DI sample as shown in XRD and FESEM micrograph analysis does help to improve the adsorption of contaminated dye molecules onto the surface complex of AC, results in a superior rate of methylene blue removal. These results suggest that the alkali-acid treatment shows promises in enhancing the adsorption rate capabilities of commercial AC for the removal of basic dyes from wastewater. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0094243X
- Volume :
- 2124
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- AIP Conference Proceedings
- Publication Type :
- Conference
- Accession number :
- 137712028
- Full Text :
- https://doi.org/10.1063/1.5117106