Preparation, characterization, and evaluation of Moringa oleifera pod husk adsorbents for aqueous phase removal of norfloxacin
作者： Raymond A. Wuana , Rufus Sha’Ato , Shiana Iorhen
DOI: 10.1080/19443994.2015.1046150
关键词:
摘要: AbstractChemically treated and carbonized adsorbents were prepared from Moringa oleifera pod husks (MPH) evaluated for the aqueous phase removal of Norfloxacin (NOX), a common antibiotic. The pulverized precursor was steeped in saturated ammonium chloride solution (24 h) to give chemically adsorbent (AMPH). Pyrolysis AMPH (623 K, ½ h) yielded (CMPH). Both showed favorable physicochemical attributes (pH, bulk density, attrition, iodine adsorption number/surface area, titratable surface charge, FT-IR analysis). NOX studied under effects initial pH (2–11), dosage (0.5–2.5 g), concentration (5–25 mg/L), contact time (0–240 min), temperature (298–328 K). Optimal uptake (mg/g) by (1.42) CMPH (1.88) occurred at 5 dose 0.5 g. Equilibrium obeyed Langmuir isotherm. Free energy change (ΔG°), enthalpy (ΔH°), entropy (ΔS°) indicate...
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