Adsorption kinetics, thermodynamics and desorption of natural dissolved organic matter by multiwalled carbon nanotubes
- 31 August 2007
- journal article
- research article
- Published by Taylor & Francis Ltd in Journal of Environmental Science and Health, Part A
- Vol. 42 (11), 1543-1552
- https://doi.org/10.1080/10934520701513381
Abstract
Multiwalled carbon nanotubes (CNTs) were thermally treated and were employed as adsorbents to study their adsorption kinetics and thermodynamics of natural dissolved organic matter (NDOM) from aqueous solutions. The adsorption kinetics follows the first-order rate law while the adsorption thermodynamics indicates the exothermic and spontaneous nature. A comparative study on the adsorption/desorption properties of NDOM between CNTs and granular activated carbon (GAC) was also conducted and revealed that the CNTs possess more NDOM adsorption capacities and show less weight loss through 10 cycles of water treatment and reactivation than the GAC. This suggests that the CNTs are promising NDOM adsorbents for preventing the microbiological degradation of drinking water quality as well as the formation of disinfection by products in water treatment.Keywords
This publication has 29 references indexed in Scilit:
- Effects of Acetic Acid on the Regrowth of Heterotrophic Bacteria in the Drinking Water Distribution SystemWorld Journal of Microbiology and Biotechnology, 2005
- Adsorption equilibrium of organic vapors on single-walled carbon nanotubesCarbon, 2005
- Effects of oxalic acid on the regrowth of heterotrophic bacteria in the distributed drinking waterChemosphere, 2004
- A study of the factors affecting the removal of humic acid by activated carbon prepared from biomass materialColloids and Surfaces A: Physicochemical and Engineering Aspects, 2004
- Adsorption of cadmium(II) from aqueous solution by surface oxidized carbon nanotubesCarbon, 2003
- New nanoporous carbon materials with high adsorption capacity and rapid adsorption kinetics for removing humic acidsMicroporous and Mesoporous Materials, 2003
- Lead adsorption on carbon nanotubesChemical Physics Letters, 2002
- Adsorption of Organic Macromolecules by Granular Activated Carbon. 1. Influence of Molecular Properties Under Anoxic Solution ConditionsEnvironmental Science & Technology, 1996
- Competitive Interactions among Components of Humic Acids in Granular Activated Carbon Adsorption Systems: Effects of Solution ChemistryEnvironmental Science & Technology, 1996
- Water Chlorination: Essential Process or Cancer Hazard?Fundamental and Applied Toxicology, 1995