Formaldehyde removal via peroxymonosulfate activated by transition metal-doped bagasse biochar
DOI:
https://doi.org/10.54939/1859-1043.j.mst.208.2025.49-56Keywords:
Biochar; Formaldehyde; PMS activation; Cobalt; Copper; Bagasse.Abstract
This study introduces a process for formaldehyde (HCHO) treatment using peroxymonosulfate (PMS) activated by copper and cobalt metal-impregnated biochar derived from sugarcane bagasse. The bagasse was subjected to alkali pre-treatment before metal impregnation and subsequent pyrolysis at 700 °C to produce the Co-Cu/Biochar material. Modern analytical methods, including SEM, EDS, XRD, and nitrogen adsorption-desorption isotherms, were employed for structural characterization. The results showed that the Co-Cu/Biochar possesses a high specific surface area (SSA=419 m2/g), making it suitable for PMS activation to eliminate HCHO. The influence of material dosage, PMS concentration, and solution pH was investigated. The findings demonstrated that HCHO was completely removed after 5 minutes of reaction at an initial concentration of 20 mg/L.
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