Year 2022

• Analytical chemistry in technical approaches: immobilization of biosorbent waste containing heavy metals in cemented materials

  Publication

  • R. Zein
  • S. Fauzia
  • Z. Bielan
  • H. Aziz
  • D. Dahlan
  • P. Konieczka
  • B. Cieślik

  - MONATSHEFTE FUR CHEMIE - Year 2022

  An ecologically safe and economically justified method of stabilization of the used biosorbents was developed. Sorbent contaminated with heavy metals has been successfully solidified/stabilized using a hydraulic binder. The test results indicated that up to 1% of the biosorbent residue used could be added without compromising the compressive strength of the mortar. The compressive strength of the modified mortars did not change...

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Year 2019

• Adsorption of Cr(VI) in aqueous solution using sago bark (Metroxylon sagu) as a new potential biosorbent

  Publication

  • S. Fauzia
  • A. Hermansyah
  • D. Dahyunir
  • J. Namieśnik
  • R. Zein

  - Desalination and Water Treatment - Year 2019

  This paper investigated the ability of sago bark (Metroxylon sagu) as a new potential biosorbent in removing Cr(VI) in batch system. The optimum adsorption capacity of sago bark (Metroxylon sagu) was 61.73 mg/g achieved at pH 3, agitation rate of 100 rpm, contact time 60 min, particle size ≤32 μm, and initial concentration of Cr(VI) 1,000 mg/L at room temperature (25°C). The adsorbent regeneration was carried out using 0.01 M HNO3...

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