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The use of magnetic biochar to overcome aquatic environmental problem has received interesting attention in recent years. Several methods in preparing magnetic biochar have been applied including impregnation-pyrolysis, chemical co-precipitation, and reductive co-precipitation. In case of co-precipitation method, the obtained magnetic biochar is relatively stable and easy to handle, that make it important to study. The purpose of this work is to study the influence of mixing time and mass ratio of precursor on preparation of magnetic biochar using this method. The cassava peel (Manihot utilissima) was used as feedstock for biochar preparation. The magnetic biochar which is characterised using FTIR, XRD, and SEM-EDX analysis was successfully prepared and applied as an adsorbent for MB. The optimum mixing time of precursor was identified at 60 minutes and maximum mass ratio was achieved at 1:1 of biochar:Fe3O4. Importantly, it can be known that MB adsorption successfully improved with the increase of mixing time, up to the optimum adsorption capacity at 60 minutes of precursor mixing time. Furthermore, at the mass ratio of 1:1 magnetic biochar displayed the highest adsorption capacity. The parameter in preparation method developed in this work can be used as an additional information in the magnetic biochar preparation


Magnetic Biochar Methylene Blue Adsorption

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How to Cite
Anas, A. K., Mutiara, R., Musawwa, M. M., & Taftazani, A. (2022). Influence of Mixing Time and Mass Ratio of Precursor on Preparation of Magnetic Biochar Derived from Cassava Peel (Manihot utilissima). EKSAKTA: Journal of Sciences and Data Analysis, 3(1), 10–16.


  1. . Mohan, D., et al., Organic and inorganic contaminants removal from water with biochar, a renewable, low cost and sustainable adsorbent–a critical review. Bioresource technology, 160 (2014) 191-202.
  2. . Inyang, M.I., et al., A review of biochar as a low-cost adsorbent for aqueous heavy metal removal. Critical Reviews in Environmental Science and Technology, 46(4) (2016) 406-433.
  3. . Mandal, A., A. Kumar, and N. Singh, Sorption mechanisms of pesticides removal from effluent matrix using biochar: Conclusions from molecular modelling studies validated by single-, binary and ternary solute experiments. Journal of Environmental Management, 295 (2021) 113104.
  4. . Shen, T., et al., Adsorption of 4-chlorophenol by wheat straw biochar and its regeneration with persulfate under microwave irradiation. Journal of Environmental Chemical Engineering, 9(4) (2021) 105353.
  5. . Liu, X.-J., M.-F. Li, and S.K. Singh, Manganese-modified lignin biochar as adsorbent for removal of methylene blue. Journal of Materials Research and Technology, 12 (2021) 1434-1445.
  6. . Yi, Y., et al., Magnetic biochar for environmental remediation: A review. Bioresource technology, 298 (2020) 122468.
  7. . Thines, K., et al., Synthesis of magnetic biochar from agricultural waste biomass to enhancing route for waste water and polymer application: a review. Renewable and Sustainable Energy Reviews, 67 (2017) 257-276.
  8. . Feng, Z., et al., Preparation of magnetic biochar and its application in catalytic degradation of organic pollutants: A review. Science of The Total Environment, 765 (2021) 142673.
  9. . Li, X., et al., Preparation and application of magnetic biochar in water treatment: A critical review. Science of The Total Environment, 711 (2020) 134847.
  10. . Salgaonkar, B.B., K. Mani, and J.M. Bragança, Sustainable Bioconversion of Cassava Waste to Poly (3-hydroxybutyrate-co-3-hydroxyvalerate) by Halogeometricum borinquense Strain E3. Journal of Polymers and the Environment, 27(2) (2019) 299-308.
  11. . Jack, J., et al., Production of magnetic biochar from waste-derived fungal biomass for phosphorus removal and recovery. Journal of Cleaner Production, 224 (2019) 100-106.
  12. . Tan, Z., et al., Cadmium removal potential by rice straw-derived magnetic biochar. Clean Technologies and Environmental Policy, 19(3) (2017) 761-774.
  13. . El-Azazy, M., et al., Eco-Structured adsorptive removal of tigecycline from wastewater: Date pits’ biochar versus the magnetic biochar. Nanomaterials, 11(1) (2021) 30.
  14. . Thines, K., E. Abdullah, and N. Mubarak, Effect of process parameters for production of microporous magnetic biochar derived from agriculture waste biomass. Microporous and Mesoporous Materials, 253 (2017) 29-39.
  15. . Chu, J.-H., et al., Application of magnetic biochar derived from food waste in heterogeneous sono-Fenton-like process for removal of organic dyes from aqueous solution. Journal of Water Process Engineering, 37 (2020) 101455.
  16. . Li, H., et al., Effect of pyrolysis temperature on characteristics and aromatic contaminants adsorption behavior of magnetic biochar derived from pyrolysis oil distillation residue. Bioresource technology, 223 (2017) 20-26.
  17. . Hou, X., et al., Synthesis and adsorption properties of spongelike porous MnFe2O4. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 363(1-3) (2010) 1-7.