|dc.identifier.citation||TY - JOUR AU - Al-rimawi, Fuad AU - Daana, Mahran AU - Khamis, Mustafa AU - Karaman, Rafik AU - Khoury, Hani AU - Qurie, Mohannad PY - 2018/07/01 SP - 1 EP - 7 T1 - Removal of Selected Pharmaceuticals from Aqueous Solutions Using Natural Jordanian Zeolite VL - 44 DO - 10.1007/s13369-018-3406-9 JO - Arabian Journal for Science and Engineering ER -||en_US
|dc.description.abstract||In this study, the removal of selected pharmaceuticals including ibuprofen, diclofenac sodium, indomethacin, chlorpheniramine
maleate, and paracetamol from water using natural Jordanian zeolite was studied. The influence of pH, contact time, adsorbent
dosage, and initial pharmaceutical concentration on the adsorption process was investigated using batch and column methods.
The optimal pH for the removal of all selected pharmaceuticals was found to be 2 except for diclofenac sodium where the
optimal pH was 6. The optimum adsorption time was found to be 80 min. The percentage removal increased as the initial
concentration of the pharmaceuticals increased from 10.0 to 50.0mg/L except for indomethacin where the removal decreased
as the initial concentration increased. After optimization, the highest removal was found to be 88.3, 30.1, 59.0, 85.8, and
12.7% for ibuprofen, diclofenac sodium, indomethacin, chlorpheniraminemaleate, and paracetamol, respectively. Langmuir
and Freundlich isotherm models were used to evaluate the adsorption efficiencies of the investigated pharmaceuticals. The
results demonstrated that Langmuir isotherm fits the experimental data for diclofenac sodium, indomethacin and paracetamol
with adsorption capacity (Qmax) of 4.8, 26.6, and 55.6 mg/g, respectively, whereas Freundlich isotherm fits the experimental
data for both ibuprofen and chlorpheniramine maleate. Continues flow experiment was performed on ibuprofen under constant
influent concentration and fixed flow rate. Equal eluted fractions of 100mL were collected and analyzed for ibuprofen content.
The results indicated that percentage removal of ibuprofen on zeolite was found to be the highest after fraction 9 with 78%