Magnesium-Impregnated Biochar for the Removal of Total Phosphorous from Artificial Human Urine

  • Authors

    • Nurul Fariha Mohd Idrus
    • Nurul´ Ain Jamion
    • Qistina Omar
    • Sheikh Ahmad Izaddin Sheikh Md Ghazali
    • Zaiton Abdul Majid
    • Soon Kong Yong
    2018-07-21
    https://doi.org/10.14419/ijet.v7i3.11.15966
  • Carbon, heavy metals, immobilization, phosphate fertilizer, pyrolysis.

  • Abstract

    Biochar has an alkaline and porous structure that could be a potential material for recycling phosphorous (P) from urine. Sawdust (SD) was pyrolyzed to produce sawdust biochar (SDB), and then impregnated with magnesium (Mg) to produce Mg-impregnated biochar (SDBM). Artificial human urine (AHU) solution was used for a batch sorption study, and various sorption parameters (i.e., sorbent/solution ratio, pH of AHU, and initial total P concentration of AHU) were optimized. The concentration of total P was measured using an inductively coupled plasma-optical emission spectroscopy (ICP-OES). The surface morphology and elemental analysis for SDB, SDBM and the struvite-loaded SDBM (SMSDB) were investigated using scanning electron spectroscopy-energy dispersive x-ray spectroscopy (SEM-EDX). The total P sorption capacity for SDBM (32755 mg/g) was higher than that of SDB (7782 mg/g) and SD (10682 mg/g). The optimum total P removal for SDBM (21.2%) was achieved at a sorbent/solution ratio of 0.06g/L at pH 9. Sorption of total P may have occurred on the heterogeneous surface of SDBM. The presence of struvite crystals indicates that phosphate was adsorbed and then precipitated on the surface of SDBM.

     

     


     

  • References

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  • How to Cite

    Fariha Mohd Idrus, N., Ain Jamion, N., Omar, Q., Ahmad Izaddin Sheikh Md Ghazali, S., Abdul Majid, Z., & Kong Yong, S. (2018). Magnesium-Impregnated Biochar for the Removal of Total Phosphorous from Artificial Human Urine. International Journal of Engineering & Technology, 7(3.11), 218-222. https://doi.org/10.14419/ijet.v7i3.11.15966

    Received date: 2018-07-21

    Accepted date: 2018-07-21

    Published date: 2018-07-21