Scholarlink

<p>Environmental contaminants such as trace metals, micro plastics and organic compounds are increasingly prevalent in aquatic ecosystems and are the main source of pollution. Functionalization of biochar with nanoparticles is a highly effective and innovative method for treating metals while simultaneously recycling organic waste. In the present study, a novel iron nanoparticle-coated magnetic biochar was synthesized for the efficient removal of Cr and Pb. For the first time iron nanoparticles were synthesized from apple peel extract (APE) and loaded with biochar from <i>Peganum harmala</i> seeds to assess their efficacy to act as adsorbents for removing metals. The characterization of synthesized nanoparticles, biochar, and nanoparticles were carried out using Fourier transform infrared spectroscopy, X-ray diffraction, Scanning Electron Microscopy, and UV-Vis spectrophotometry. The size of iron nanoparticles FeNPs was measured approximately (50–100&#xa0;nm) while FTIR maximum peak were observed at (3581<sup>− 1</sup>cm) and for the nanocomposite peak at (3584&#xa0;cm <sup>− 1</sup>). The shape (SEM) of newly synthesized FeNPs were elliptical and irregular while smaller and narrower peaks of (XRD) for biochar suggested an amorphous nature. Results showed maximum removal of Cr (92.5%) and lead (90%) by the nanocomposite. A <i>Pseudo</i>-second order model was the best fit for the removal of Cr and Pb with value of R<sup>2</sup> = 0.9938 and 0.9998, respectively. q<sub>e</sub> values were 30&#xa0;mg/g and 28.53&#xa0;mg/g for Cr and Pb. Results data were well fitted for the Langmuir isotherm with valve of R<sup>2</sup> = 0.9936 and 0.9997 for Cr and Pb, respectively. And q<sub>max</sub> values were 65.104 and 68.728&#xa0;mg/g for Cr and Pb, respectively. In summary, our new nanocomposite demonstrated impressive adsorption efficiency holding promise as a novel bioremediation agent for the removal of pollutants to maintain metals toxicity to sub toxic levels.</p> Graphical Abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Co-application of Apple Peel Nanoparticles and Functional Halophytic Biochar Improve the Remediation of Hazardous Cr and Pb for Environmental Safety

  • 期刊论文

  • 发表日期：

    2025年9月2日

查看全文
  • Neelma Munir,
  • Arifa Chaudhary,
  • Maria Hanif,
  • Daniel Anthony Dias,
  • Mohamed A. El-Sheikh,
  • Zainul Abideen

摘要

Environmental contaminants such as trace metals, micro plastics and organic compounds are increasingly prevalent in aquatic ecosystems and are the main source of pollution. Functionalization of biochar with nanoparticles is a highly effective and innovative method for treating metals while simultaneously recycling organic waste. In the present study, a novel iron nanoparticle-coated magnetic biochar was synthesized for the efficient removal of Cr and Pb. For the first time iron nanoparticles were synthesized from apple peel extract (APE) and loaded with biochar from Peganum harmala seeds to assess their efficacy to act as adsorbents for removing metals. The characterization of synthesized nanoparticles, biochar, and nanoparticles were carried out using Fourier transform infrared spectroscopy, X-ray diffraction, Scanning Electron Microscopy, and UV-Vis spectrophotometry. The size of iron nanoparticles FeNPs was measured approximately (50–100 nm) while FTIR maximum peak were observed at (3581− 1cm) and for the nanocomposite peak at (3584 cm − 1). The shape (SEM) of newly synthesized FeNPs were elliptical and irregular while smaller and narrower peaks of (XRD) for biochar suggested an amorphous nature. Results showed maximum removal of Cr (92.5%) and lead (90%) by the nanocomposite. A Pseudo-second order model was the best fit for the removal of Cr and Pb with value of R2 = 0.9938 and 0.9998, respectively. qe values were 30 mg/g and 28.53 mg/g for Cr and Pb. Results data were well fitted for the Langmuir isotherm with valve of R2 = 0.9936 and 0.9997 for Cr and Pb, respectively. And qmax values were 65.104 and 68.728 mg/g for Cr and Pb, respectively. In summary, our new nanocomposite demonstrated impressive adsorption efficiency holding promise as a novel bioremediation agent for the removal of pollutants to maintain metals toxicity to sub toxic levels.

Graphical Abstract