| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 691410 | Journal of the Taiwan Institute of Chemical Engineers | 2014 | 8 Pages |
•Adsorption of ciprofloxacin was conducted by carbon from aqueous solution.•Adsorption of Ni(II) was conducted by carbon from aqueous solution.•Cosorption of ciprofloxacin and Ni(II) was investigated.•The addition of ciprofloxacin suppressed the adsorption of Ni(II) onto carbon.•The presence of Ni(II) increased the adsorption of CIP in certain pH range.
Antibiotics and heavy metals often coexist in water bodies due to influxes of various pollution sources. The objective of this study was to evaluate the interaction between Ni(II) and ciprofloxacin (CIP) concerning their adsorption and cosorption onto activated carbon as a function of time, solution pH and initial concentration. Adsorption of Ni(II) and CIP on activated carbon was strongly dependent on solution pH, indicating an electrostatic attraction mechanism. Cosorption of Ni(II) and CIP also strongly depended on solution pH. The presence of CIP suppressed Ni(II) adsorption, especially at low pH, due to the competition of CIP with Ni(II) for adsorption sites. The presence of Ni(II) in the aqueous solution increased the adsorption of CIP onto activated carbon at pH between 3.4 and 6.5, because the positively charged complexes of Ni–CIP with greater sorption affinity to activated carbon than CIP itself form in this pH range.
