Journal
REACTIVE & FUNCTIONAL POLYMERS
Volume 95, Issue -, Pages 62-70Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.reactfunctpolym.2015.08.008
Keywords
Regeneration; Photocatalyst; 2,4,6-Trichlorophenol; Toxicity evaluation; Remote oxidation
Funding
- Korea Institute of Science and Technology (KIST) [2E25311]
- Ministry of Science, ICT & Future Planning, Republic of Korea [2E25311] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Composites of powdered activated carbon and/or titanium dioxide were investigated as a photo-regenerable adsorbent for use in the removal of 2,4,6-trichlorophenol from aqueous solution. Seven types of adsorbents were prepared for organic contaminant adsorption tests. Lab-scale tests were conducted to investigate the removal efficiencies of 2,4,6-trichlorophenol and the potential for regenerating the adsorbents using UV irradiation. Among these adsorbents, the ultrasonic irradiated alginate bead-impregnated powdered activated carbon and titanium dioxide-dry type 1 (PTAB-D-Sonic 1) exhibited the greatest adsorption capacity for 2,4,6-trichlorophenol (12.38 mg g(-1)); in addition, the removal efficiency was consistent approximately 11 mg g(-1), notwithstanding repetitive regeneration by UV irradiation. The characteristics of each adsorbent were confirmed using Brunauer-Emmett-Teller (BET), field-emission scanning electron microscopy (FE-SEM) and energy dispersive X-ray (EDX) analysis. In addition, a cytotoxicity experiment was conducted on the developed material, and the results showed that all seven materials had low cytotoxic effects on human cells. This research provides promising results for the application of a photo-regenerable adsorbent, e.g., PTAB-D-Sonic 1, for the removal of various organic contaminants from sewage and wastewater. (C) 2015 Elsevier B.V. All rights reserved.
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