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Orange peels magnetic activate carbon (MG-OPAC) composite formation for toxic chromium absorption from wastewater.
- Source :
-
Scientific reports [Sci Rep] 2023 Feb 28; Vol. 13 (1), pp. 3402. Date of Electronic Publication: 2023 Feb 28. - Publication Year :
- 2023
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Abstract
- This work prepared a composite of orange peels magnetic activated carbon (MG-OPAC). The prepared composite was categorized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), Brunauer-Emmett-Teller (BET), Energy-dispersive X-ray spectroscopy (EDX), Scanning Electron Microscopy (SEM) and vibrating-sample magnetometer (VSM) analyses. The MG-OPAC composite showed the surface area (155.09 m <superscript>2</superscript> /g), the total volume of pores (0.1768 cm <superscript>3</superscript> /g), and the mean diameter of pores (4.5604 nm). The saturation magnetization (Ms = 17.283 emu/g), remanence (Mr = 0.28999 emu/g) and coercivity (Hc = 13.714 G) were reported for the prepared MG-OPAC. Likewise, at room temperature, the MG-OPAC was in a super-paramagnetic state, which could be collected within 5 S (< 5 S) with an outside magnetic field. Influence of time of contact, absorbent dose, starting concentration of Cr <superscript>6+</superscript> ions, and pH were tested to adjust the absorption process. The absorption behavior of MG-OPAC for hexavalent chromium was investigated by Langmuir (LIM), Freundlich (FIM) and Temkin (TIM) isotherm models (IMs). Applicability of LIM specifies that Cr <superscript>6+</superscript> ions absorption procedure may be monolayer absorption. The maximum monolayer capacity (Q <subscript>m</subscript> ) premeditated by LIM was 277.8 mg/g. Similarly, the absorption process was tested with different kinetic models like intraparticle diffusion (IPDM), pseudo-first-order (PFOM), Elovich (EM), pseudo-second-order (PSOM), and Film diffusion (FDM). The PSOM was best fitted to the experimental results of Cr <superscript>6+</superscript> ions absorption with R <superscript>2</superscript> ranging between 0.992 and 1.<br /> (© 2023. The Author(s).)
Details
- Language :
- English
- ISSN :
- 2045-2322
- Volume :
- 13
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Scientific reports
- Publication Type :
- Academic Journal
- Accession number :
- 36854794
- Full Text :
- https://doi.org/10.1038/s41598-023-30161-6