Facile fabrication of Mg-Fe-biochar adsorbent derived from spent mushroom waste for phosphate removal

Ahmad Alhujaily, Yingzheng Mao, Jialong Zhang, Jerosha Ifthikar, Xiaoyu Zhang, Fuying Ma

Research output: Journal PublicationArticlepeer-review

23 Citations (Scopus)


Excessive phosphate in water bodies causes eutrophication, which can be harmful to human and animal health. This study aimed to fabricate biochar adsorbent based on Mg-Fe modified spent mushroom waste for removing phosphate from aqueous solutions. Various characterization tools such as scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDX), Brunauer Emmett Teller (BET), X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared spectroscopy (FT-IR) were applied to determine the surface structure and properties of biochar from spent mushroom waste (BSMW) and biochar from Mg-Fe modified spent mushroom waste (Mg-Fe@BSMW). The result confirmed that Mg and Fe were successfully embedded into the biochar matrix. Mg-Fe@BSMW showed an excellent adsorption capacity for phosphate (247 mg g−1). Kinetic and isotherm analyses revealed that the current study's data fitted well with the pseudo-second-order model and the Langmuir model. A thermodynamic study indicated that phosphate removal was exothermic and spontaneous. Our study indicated that Mg-Fe@BSMW was a potential adsorbent with high efficiency, and excellent reusability for phosphate removal.

Original languageEnglish
Pages (from-to)75-85
Number of pages11
JournalJournal of the Taiwan Institute of Chemical Engineers
Publication statusPublished - Dec 2020
Externally publishedYes


  • Adsorption
  • Biochar
  • Phosphate
  • Spent mushroom waste
  • Water treatment

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering


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