We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Optimization preparation of activated carbon from Enteromorpha prolifra using response surface methodology and its adsorption studies of fluoroquinolone antibiotics.
- Authors
Gao, Yuan; Yue, Qinyan; Gao, Baoyu; Sun, Yuanyuan
- Abstract
Enteromorpha prolifera,a marine solid waste abundantly available in Asia, was used as a low-cost precursor to prepare activated carbon (EPAC) using pyrophosphoric acid, H4P2O7, as a chemical activating agent. The effects of impregnation ratio, activation temperature and activation time on the specific surface area of the activated carbon were investigated through response surface methodology. The optimum preparation conditions were described as follows: impregnation ratio, 1.26; activation temperature, 455°C; activation time, 48 min. The characteristics of EPAC were examined by nitrogen adsorption–desorption isotherms, Fourier transformed infrared spectroscopy and scanning electron microscopy. The total pore volume and specific surface area of EPAC under optimum conditions were identified as 1.365 cm3/g and 1124.1 m2/g. The EPAC possessed high BJH pore volume, 1.276 cm3/g and methylene blue value, 330 mg/g, indicating the existence of abundant mesopores. The adsorption kinetic data of ciprofloxacin were well fitted to pseudo-second-order model, displaying a monolayer adsorption capacity for CIP of 216.55 mg/g. The equilibrium data can be well described by Langmuir model. The dominant sorption mechanism is electrostatic attraction.
- Subjects
ENTEROMORPHA; SOLID waste; RESPONSE surfaces (Statistics); FLUOROQUINOLONES; ANTIBIOTICS
- Publication
Desalination & Water Treatment, 2015, Vol 55, Issue 3, p624
- ISSN
1944-3994
- Publication type
Article
- DOI
10.1080/19443994.2014.922442