The performance of Diclofenac sodium (DFs) adsorption by MIL101(Cr) and five different contents of PTA in PTA@MIL101(Cr) (encapsulated phosphotungstic acid (PTA) using one pot method) were investigated in a batch and a designed continuous flow loop thin film slurry flat plate reactor (TFSR). Excellent diclofenac sodium adsorption efficiency was achieved with 12 wt% PTA synthesized within the Metal Organic Framework (MOF) and using the Langmuir equation the maximum adsorption capacity of diclofenac sodium was 413.22 mg/g. The Langmuir model matched the isotherm adsorption data and the removal process was complemented with a pseudo–second–order kinetics model. According to the thermodynamic analyses, the process was found to be spontaneous and endothermic. In order to regenerate the MOF, 0.1 M HCl/EtOH (20/80 v/v) best performed as elution agent, regenerating the MOF to 88% of its originated maximum capacity after 5 times reusing. PTA (12 wt%) @MIL101 (Cr) showed to be a tremendous reusable adsorbent for removing DFs from aqueous media.