Scholarlink

<p>This study investigates the removal of bisphenol A from wastewater using both pristine and chemically activated lotus stem biochar. Column adsorption studies were conducted to evaluate the adsorbent's performance, while scanning electron microscopy (SEM), Energy-dispersive X-ray analysis (EDAX), Fourier-transform infrared spectroscopy (FTIR), X-ray Diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Brunauer–Emmett–Teller (BET) techniques were used to characterize its properties comprehensively. The column exhibited optimal performance at a flow rate of 0.5&#xa0;mL/min and a bed height of 16&#xa0;cm. In fixed bed adsorption, the adsorption capacity and removal percentage reached 221.2&#xa0;mg.g<sup>−1</sup> and 95%, respectively, for bisphenol-A. Sewage water was collected from an untreated open drain joining the rivers Ganga and Yamuna, Prayagraj, India. The integrated Fenton oxidation with adsorption techniques achieved removal efficiencies of 91% for alkalinity, 89% for chloride, 94% for COD, 89% for NH<sub>3</sub>–N, 82% for NO<sub>3</sub><sup>−</sup>, 85% for PO<sub>4</sub><sup>3−</sup>, 92% for SO<sub>4</sub><sup>2−</sup>. Furthermore, Fenton's oxidation alone reduced heavy metal concentrations by 10–12%, while the integrated process significantly reduced 90–95%. These results highlight the effectiveness of the combined treatment method, representing a significant step forward in developing efficient and sustainable wastewater treatment solutions. The integrated treatment process significantly reduced the most probable number, substantially decreasing bacterial load. An ecotoxicity study on <i>Aliivibrio fischeri</i> revealed a 95.52% reduction in percent bioluminescence inhibition, highlighting a substantial decrease in the wastewater ecotoxicity load.</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

Hyphenated Fenton-nAl2O3 Modified Biochar Packed Bed Reactor for Treatment of Bisphenol A Containing Municipal Sewage: Aliivibrio Fischeri Based Ecotoxicological Study

  • 期刊论文

  • 发表日期：

    2026年1月6日

查看全文
  • Amreen Bano,
  • Bablu Prasad,
  • Hemen Dave,
  • Chithra Sivanandan,
  • Kumar Suranjit Prasad,
  • Fuad Ameen

摘要

This study investigates the removal of bisphenol A from wastewater using both pristine and chemically activated lotus stem biochar. Column adsorption studies were conducted to evaluate the adsorbent's performance, while scanning electron microscopy (SEM), Energy-dispersive X-ray analysis (EDAX), Fourier-transform infrared spectroscopy (FTIR), X-ray Diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Brunauer–Emmett–Teller (BET) techniques were used to characterize its properties comprehensively. The column exhibited optimal performance at a flow rate of 0.5 mL/min and a bed height of 16 cm. In fixed bed adsorption, the adsorption capacity and removal percentage reached 221.2 mg.g−1 and 95%, respectively, for bisphenol-A. Sewage water was collected from an untreated open drain joining the rivers Ganga and Yamuna, Prayagraj, India. The integrated Fenton oxidation with adsorption techniques achieved removal efficiencies of 91% for alkalinity, 89% for chloride, 94% for COD, 89% for NH3–N, 82% for NO3−, 85% for PO43−, 92% for SO42−. Furthermore, Fenton's oxidation alone reduced heavy metal concentrations by 10–12%, while the integrated process significantly reduced 90–95%. These results highlight the effectiveness of the combined treatment method, representing a significant step forward in developing efficient and sustainable wastewater treatment solutions. The integrated treatment process significantly reduced the most probable number, substantially decreasing bacterial load. An ecotoxicity study on Aliivibrio fischeri revealed a 95.52% reduction in percent bioluminescence inhibition, highlighting a substantial decrease in the wastewater ecotoxicity load.

Graphical Abstract