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Background <p>Hydrogen sulfide (H<sub>2</sub>S) gas, characterized by its low odor threshold and toxicity, poses significant challenges in non-point source odor management. Traditional biotechnologies are effective in removing malodorous gases from point sources but they are limited for non-point source odor control.</p> Results <p>In this study, the <i>sqr</i> and <i>pdo</i> genes from <i>Cupriavidus pinatubonensis</i> JMP134 were introduced into the bacterial cellulose-producing strain <i>Kosakonia oryzendophytica</i> FY-07. This genetic modification enhanced the strain’s sulfur oxidation capacity, which increased over time, with an average transformation capacity of approximately 275 mg·L<sup>− 1</sup>·day<sup>− 1</sup>. By incorporating 1% activated carbon, an efficient, naturally degradable bio-composite membrane was developed, achieving a maximum H<sub>2</sub>S adsorption capacity of 7.3&#xa0;g·m<sup>− 3</sup>·day<sup>− 1</sup>. FY-07 remained stable in soil and improved the microbial community for H<sub>2</sub>S treatment.</p> Conclusion <p>The resulting bio-composite membrane is environment-friendly and efficient, making it suitable for emergency odor control in landfills. This study offers recommendations for using membrane materials in managing non-point hydrogen sulfide emissions.</p>

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Bioremediation of non-point hydrogen sulfide emissions using bacterial cellulose/activated carbon membrane

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年3月12日

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  • Mingbo Yang,
  • Yan Zhang,
  • Xueqing Zhao,
  • Ge Gao,
  • Yucheng Shi,
  • Yifan Wang,
  • Mengyue Duan,
  • Ziye Guo,
  • Xiaodong Ma,
  • Ting Ma,
  • Guoqiang Li

摘要

Background

Hydrogen sulfide (H2S) gas, characterized by its low odor threshold and toxicity, poses significant challenges in non-point source odor management. Traditional biotechnologies are effective in removing malodorous gases from point sources but they are limited for non-point source odor control.

Results

In this study, the sqr and pdo genes from Cupriavidus pinatubonensis JMP134 were introduced into the bacterial cellulose-producing strain Kosakonia oryzendophytica FY-07. This genetic modification enhanced the strain’s sulfur oxidation capacity, which increased over time, with an average transformation capacity of approximately 275 mg·L− 1·day− 1. By incorporating 1% activated carbon, an efficient, naturally degradable bio-composite membrane was developed, achieving a maximum H2S adsorption capacity of 7.3 g·m− 3·day− 1. FY-07 remained stable in soil and improved the microbial community for H2S treatment.

Conclusion

The resulting bio-composite membrane is environment-friendly and efficient, making it suitable for emergency odor control in landfills. This study offers recommendations for using membrane materials in managing non-point hydrogen sulfide emissions.