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<p>Pesticides are a major threat in the soil system and environment. Removal of these harmful recalcitrant is the center of attraction at this moment. Cerium oxide nanocomposite are biologically synthesized with the help of <i>Pseudomonas libanensis</i>. It has gained the responsiveness of many investigators due to its unique properties. The present work investigates the use of bacterially synthesized (biogenic) cerium oxide nanocomposite (CeO<sub>2</sub> NC) in the removal of monocrotophos (MCP). The biogenic CeO<sub>2</sub> NC was characterized through UV Visible spectrophotometer, FTIR, XRD, XPS, FESEM and TGA. The typical size of biogenic CeO<sub>2</sub> NC was found to be 33.14&#xa0;nm. The peculiar properties makes biogenic CeO<sub>2</sub> NC a good adsorbent of MCP with adsorption capacities of 98%. The pH<sub>pzc</sub>, specific surface area and the stability of CeO<sub>2</sub> NC in MCP solution was addressed. The kinetics of MCP purging was studied and found it falls under pseudo-second order of kinetics. Similarly the removal of MCP was investigated using adsorption isotherm models.</p>

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Sequestration of monocrotophos using novel biogenenic cerium oxide nanocomposite -a biopotential adsorbent

  • 期刊论文

  • 发表日期：

    2025年12月2日

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  • Mary Isabella Sonali J,
  • K. Veena Gayathri,
  • Revathy Rajagopal

摘要

Pesticides are a major threat in the soil system and environment. Removal of these harmful recalcitrant is the center of attraction at this moment. Cerium oxide nanocomposite are biologically synthesized with the help of Pseudomonas libanensis. It has gained the responsiveness of many investigators due to its unique properties. The present work investigates the use of bacterially synthesized (biogenic) cerium oxide nanocomposite (CeO2 NC) in the removal of monocrotophos (MCP). The biogenic CeO2 NC was characterized through UV Visible spectrophotometer, FTIR, XRD, XPS, FESEM and TGA. The typical size of biogenic CeO2 NC was found to be 33.14 nm. The peculiar properties makes biogenic CeO2 NC a good adsorbent of MCP with adsorption capacities of 98%. The pHpzc, specific surface area and the stability of CeO2 NC in MCP solution was addressed. The kinetics of MCP purging was studied and found it falls under pseudo-second order of kinetics. Similarly the removal of MCP was investigated using adsorption isotherm models.