| Title |
Bentonite and carbon nanotube adsorbents for the removal of bisphenol A from water |
| ID_Doc |
64738 |
| Authors |
Salam, NFA; Kaminska, G; Marszalek, A |
| Title |
Bentonite and carbon nanotube adsorbents for the removal of bisphenol A from water |
| Year |
2022 |
| Published |
|
| DOI |
10.5004/dwt.2022.28922 |
| Abstract |
The present study investigates the adsorption of bisphenol A (BPA), a well-known endocrine disruptor and widespread pollutant in the aquatic environment, using bentonite clay (Ben) and bentonite-carbon nanotubes composite (Ben-CNT) as adsorbents. In the study of adsorption isotherms, the initial concentrations of BPA in water were 1 and 2 mg/L, while for the kinetic study it was 1 mg/L. The kinetics data correlated well to a pseudo-second-order reaction, with Ben and Ben-CNT reaching equilibrium in around 60 and 180 min, respectively. Isothermal data fitted well to Freundlich and Dubinin-Radushkevich models, while the Langmuir model did not provide suitable fitting. The resulting adsorption capacity was about 1.56 and 29.61 mg/g for bentonite and bentonite-carbon nanotubes composite, respectively. The removal percentage of BPA was improved from about 24% for bentonite clay to 87% for bentonite-carbon nanotubes composite for adsorbents dose of 0.25 g/100 mL. This improvement was due to the large specific surface area of carbon nanotubes and the availability of large number of active groups for binding pollutants. |
| Author Keywords |
Bentonite; Water; Bisphenol A; Carbon nanotubes; Adsorption |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED); Conference Proceedings Citation Index - Science (CPCI-S) |
| EID |
WOS:000966249100017 |
| WoS Category |
Engineering, Chemical; Water Resources |
| Research Area |
Engineering; Water Resources |
| PDF |
|