Modified activated carbon by air oxidation as a potential adsorbent for furfural removal
Kai Fang, Rendang Yang
Abstract
This study used heat-activated carbon (350 °C in the air) for the adsorption and removal of furfural from wastewater. The characteristics of air oxidation activated carbon (ACAOx) were tested. The results indicated that oxygen-containing functional groups were generated, with 1306 m2/g BET surface area of ACAOx. Salt concentration, temperature, and initial pH slightly affected the adsorption of furfural. Furfural removal efficiency was dependent on the dosage of ACAOx. The intra-particle and boundary-layer diffusions were likely contributed to the rate-limiting mechanisms of furfural adsorption. The activated carbon via air oxidation emerged as an acceptable and cost-effective adsorbent for furfural from wastewater.
Topics & Concepts
FurfuralActivated carbonAdsorptionChemistryWastewaterCarbon fibersChemical engineeringNuclear chemistryInorganic chemistryEnvironmental engineeringMaterials scienceOrganic chemistryCatalysisEnvironmental scienceComposite materialComposite numberEngineeringAdsorption and biosorption for pollutant removalSupercapacitor Materials and FabricationNanomaterials for catalytic reactions