Journal
CHEMICAL ENGINEERING COMMUNICATIONS
Volume 202, Issue 10, Pages 1280-1288Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/00986445.2014.921620
Keywords
Adsorption; Electrochemical regeneration; Graphite intercalation compound; Tartrazine
Categories
Funding
- Arvia Technology Ltd, UK
- Institute of Chemical Engineering and Technology, University of the Punjab, Lahore, Pakistan
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An innovative process has been developed at University of the Manchester in order to remove organic contaminants from wastewater using graphite intercalation compounds (GICs) as adsorbents with electrochemical regeneration. The present study has demonstrated the removal of tartrazine, from water by adsorption and electrochemical regeneration. The adsorption of tartrazine onto GIC adsorbent was shown to be a quick process, however, with extremely low adsorption capacity compared to porous adsorbents. Low adsorption capacity of the adsorbent is being compensated by rapid electrochemical regeneration associated with low energy consumption that makes the process cost-effective. Regeneration efficiency of around 100% could be obtained in an electrochemical cell by passing a charge of 18 C g(-1) for 18 min through a 10-mm thick adsorbent bed. A series of adsorption and regeneration cycles showed that there was little loss in adsorbent capacity, demonstrating that tartrazine loaded GIC adsorbent could be effectively regenerated electrochemically.
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