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<p><b>[Objective] To assess the bioremediation potential of garbage enzymes in heavy metal-contaminated lead-zinc mine soils. [Method] A pot experiment evaluated garbage enzymes application effects on: (1) Pb/Zn/Cd bioavailability and phytoavailability</b>,<b> (2) soil fertility parameters</b>,<b> (3) soil enzyme activities</b>,<b> and (4) physiological responses of Chinese cabbage. [Results] Garbage enzymes significantly reduced heavy metal bioavailability</b>,<b> decreasing leaf Pb/Zn/Cd concentrations by 66.8%/17.6%/37.4% and root levels by 34.3%/23.4%/46.8% versus controls. Soil fertility improved substantially</b>,<b> with available N/P/K increments of 2.43–31.2%</b>,<b> 1.86–45.5%</b>,<b> and 3.40–22.3%</b>,<b> respectively. Key soil enzymes (urease</b>,<b> sucrase</b>,<b> catalase</b>,<b> phosphatase) exhibited enhanced activities. Garbage enzymes treated plants showed increased biomass (fresh weight)</b>,<b> chlorophyll (21.8%)</b>,<b> and soluble sugars</b>,<b> alongside reduced stress markers: nitrate-N (-24.3%)</b>,<b> malondialdehyde (-33.6%)</b>,<b> proline (-18.9%)</b>,<b> and superoxide dismutase (-42.1%). [Conclusions] Garbage enzymes demonstrate dual functionality in metal immobilization and soil revitalization</b>,<b> offering an eco-sustainable solution for restoring agricultural productivity in contaminated ecosystems.</b></p>

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Application and exploration of garbage enzymes in soil remediation of multiple heavy metal pollution

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年4月9日

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  • Guangxu Zhu,
  • Xingfeng Wang,
  • Rongkun Chen,
  • Yunyan Wang,
  • Qiang Tu

摘要

[Objective] To assess the bioremediation potential of garbage enzymes in heavy metal-contaminated lead-zinc mine soils. [Method] A pot experiment evaluated garbage enzymes application effects on: (1) Pb/Zn/Cd bioavailability and phytoavailability, (2) soil fertility parameters, (3) soil enzyme activities, and (4) physiological responses of Chinese cabbage. [Results] Garbage enzymes significantly reduced heavy metal bioavailability, decreasing leaf Pb/Zn/Cd concentrations by 66.8%/17.6%/37.4% and root levels by 34.3%/23.4%/46.8% versus controls. Soil fertility improved substantially, with available N/P/K increments of 2.43–31.2%, 1.86–45.5%, and 3.40–22.3%, respectively. Key soil enzymes (urease, sucrase, catalase, phosphatase) exhibited enhanced activities. Garbage enzymes treated plants showed increased biomass (fresh weight), chlorophyll (21.8%), and soluble sugars, alongside reduced stress markers: nitrate-N (-24.3%), malondialdehyde (-33.6%), proline (-18.9%), and superoxide dismutase (-42.1%). [Conclusions] Garbage enzymes demonstrate dual functionality in metal immobilization and soil revitalization, offering an eco-sustainable solution for restoring agricultural productivity in contaminated ecosystems.