| Autor: |
Alfin Kurniawan, Lu Ki Ong, Merry Anggraini, Felycia Edi Soetaredjo, Mario A. Martin, Suryadi Ismadji, Nani Indraswati, Jhy-Chern Liu |
| Rok vydání: |
2014 |
| Předmět: |
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| Zdroj: |
RSC Adv.. 4:16298-16311 |
| ISSN: |
2046-2069 |
| Popis: |
The growing threat of antibiotic-resistant bacteria to public health has raised interest in the proper treatment of discharged pharmaceutical wastewater before entering surface waters. In this study, adsorption was highlighted as a low cost and effective pathway to remove amoxicillin and ampicillin from aqueous solutions. Montmorillonite (Na-MMT) and myristyltrimethylammonium (MTA)-intercalated montmorillonite (O-MMT) were employed as the adsorbing solids. Static adsorption experiments were performed at three temperatures (303.15 K, 313.15 K and 323.15 K) for single antibiotic systems. The adsorption isotherm curves at all temperatures exhibited an L2-type isotherm. The Freundlich and Langmuir models were applied to analyze single adsorption isotherm data. The maximum sorption capacity of 0.124–0.133 mmol g−1 for amoxicillin and 0.143–0.157 mmol g−1 for ampicillin was estimated for O-MMT sorbent from Langmuir fitting. A modified extended-Langmuir model with the inclusion of surface coverage (θ) was proposed for analysis of binary adsorption isotherm data. The fitness of the modified extended-Langmuir model was superior to the original model. Batch adsorption tests on real pharmaceutical wastewater demonstrated the feasibility of the O-MMT sorbent for practical applications. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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