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<p>The investigation demonstrates the efficacy of constructed wetlands employing <i>Chrysopogon zizanioides</i> (vetiver) and <i>Corchorus olitorius</i> (Jute) in attenuating aqueous erythromycin and doxycycline, which are common in pharmaceutical and hospital-borne wastewater. Raw vetiver leaf and root (RVL, RVR), dried vetiver leaf and root (DVL, DVR), and Jute were utilized to determine the optimal removal efficiencies. Excellent removal rates for erythromycin and doxycycline were recorded for RVL, RVR, DVL, DVR, and Jute. A pseudo-second-order model best described the sorption kinetics for all combinations (R<sup>2</sup> = 0.97 to 0.99). Sorbent-sorbate interactions were effectively characterized by Langmuir and Freundlich isotherms, with sorption capacities ranging from 0.09 to 1.86&#xa0;mg/g. Erythromycin sorption decreased with increasing pH, while doxycycline sorption increased. Elevated temperatures enhanced the removal efficiency for both erythromycin and doxycycline. In the wetland setup, average vetiver removal rates were 71.3% for erythromycin and 85.1% for doxycycline, further enhanced to 97.5% and 96.6%, respectively, by incorporating Jute. These findings indicate that constructed wetlands utilizing vetiver and Jute hold significant promise for mitigating antibiotic contamination, offering substantial environmental and public health benefits. Further upscaling, optimization, and in-situ implications of this simulated wetland model can pioneer plant biomass as the next generation sustainable alternative to antibiotic pollution mitigation.</p> Graphical Abstract <p></p>

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Optimizing the Mitigation of Erythromycin and Doxycycline Using Vetiver and Jute in a Simulated Vertical Surface Flow Constructed Wetland System

  • 期刊论文

  • 发表日期：

    2025年8月7日

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  • Avishek Adhikary,
  • Indrani Paul,
  • Supriya Pal,
  • Sudipta Ghosh

摘要

The investigation demonstrates the efficacy of constructed wetlands employing Chrysopogon zizanioides (vetiver) and Corchorus olitorius (Jute) in attenuating aqueous erythromycin and doxycycline, which are common in pharmaceutical and hospital-borne wastewater. Raw vetiver leaf and root (RVL, RVR), dried vetiver leaf and root (DVL, DVR), and Jute were utilized to determine the optimal removal efficiencies. Excellent removal rates for erythromycin and doxycycline were recorded for RVL, RVR, DVL, DVR, and Jute. A pseudo-second-order model best described the sorption kinetics for all combinations (R2 = 0.97 to 0.99). Sorbent-sorbate interactions were effectively characterized by Langmuir and Freundlich isotherms, with sorption capacities ranging from 0.09 to 1.86 mg/g. Erythromycin sorption decreased with increasing pH, while doxycycline sorption increased. Elevated temperatures enhanced the removal efficiency for both erythromycin and doxycycline. In the wetland setup, average vetiver removal rates were 71.3% for erythromycin and 85.1% for doxycycline, further enhanced to 97.5% and 96.6%, respectively, by incorporating Jute. These findings indicate that constructed wetlands utilizing vetiver and Jute hold significant promise for mitigating antibiotic contamination, offering substantial environmental and public health benefits. Further upscaling, optimization, and in-situ implications of this simulated wetland model can pioneer plant biomass as the next generation sustainable alternative to antibiotic pollution mitigation.

Graphical Abstract