Modified biochar from Moringa seed powder for the removal of diclofenac from aqueous solution

作者: Afrouz Bagheri , Emmanuel Abu-Danso , Jibran Iqbal , Amit Bhatnagar

DOI: 10.1007/S11356-019-06844-X

关键词: BiocharAdsorptionAqueous solutionPhosphoric acidPoint of zero chargeChemistryPyrolysisNuclear chemistryFourier transform infrared spectroscopyMoringa

摘要: In this study, Moringa seed powder (MSP) was pyrolyzed at 450 °C to synthesize biochar (MSPB) and treated with phosphoric acid (H3PO4) phosphate-modified (MSPB-HPO) as an adsorbent for the removal of diclofenac (Dfc) from aqueous solution. Fourier transform infrared (FTIR) analysis, energy dispersive X-ray spectroscopy (EDS), scanning electron microscopy (SEM), pH point zero charge (pHpzc) were conducted give more insight into adsorbent’s properties. The SEM analysis showed transformations in surface morphology parent material synthesized materials after thermal treatment. EDS revealed variation elemental composition prior adsorption Dfc ions. FTIR changes peak intensities functional groups involved removal. pHpzc carried by MSPB-HPO different conditions. Isotherm data best matched Sips model, pseudo-second-order model described kinetics. maximum capacity found be 100.876 mg g−1.

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