Enhanced biodegradation of perchlorate in the presence of FeCl2 and FeCl3

IF 2.8 4区生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Journal of chemical technology and biotechnology Pub Date : 2025-04-11 DOI:10.1002/jctb.7861

Ningbo Gao, Lijie Cheng, Lifang Lu, Cui Quan

{"title":"Enhanced biodegradation of perchlorate in the presence of FeCl2 and FeCl3","authors":"Ningbo Gao, Lijie Cheng, Lifang Lu, Cui Quan","doi":"10.1002/jctb.7861","DOIUrl":null,"url":null,"abstract":"<div>\n \n \n <section>\n \n <h3> BACKGROUND</h3>\n \n <p>Bioreduction of perchlorate (ClO<sub>4</sub><sup>−</sup>) faces challenges such as slow degradation rates and long start-up periods, greatly limiting their practical application. This study investigated the effects of Fe(II) and Fe(III) at concentrations of 0, 0.1, 0.5, and 1 mmol L<sup>−1</sup> on the bioreduction characteristics of ClO<sub>4</sub><sup>−</sup>.</p>\n </section>\n \n <section>\n \n <h3> RESULTS</h3>\n \n <p>Compared to the control group, the reduction rates of ClO<sub>4</sub><sup>−</sup> in the Fe(II)-0.1 and Fe(III)-0.1 systems increased by 7.46-fold and 7.24-fold, respectively. Complete degradation of ClO<sub>4</sub><sup>−</sup> up to 1586.32 ± 18.60 mg L<sup>−1</sup> could be achieved within 96 h.</p>\n </section>\n \n <section>\n \n <h3> CONCLUSION</h3>\n \n <p>The results demonstrate that the addition of Fe(II) and Fe(III) effectively improves issues such as long start-up periods and slow degradation rates in the bioreduction of ClO<sub>4</sub><sup>−</sup>. The presence of Fe enhances the secretion of cytochrome c on the cell membrane, and the reversible redox reaction between Fe(II) and Fe(III) enhances electron transfer during the ClO<sub>4</sub><sup>−</sup> reduction process. Furthermore, increased total membrane permeability promotes the absorption and utilization of nutrients by cells, accelerating cellular growth and metabolism. Analysis of the microbial community structure revealed that the addition of Fe(III) favored the abundance of Patescibacteria, Bacteroidota, and Firmicutes, facilitating extracellular electron transfer during high chlorate salt reduction and significantly enhancing the bioreduction efficiency of ClO<sub>4</sub><sup>−</sup>. © 2025 Society of Chemical Industry (SCI).</p>\n </section>\n </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 6","pages":"1288-1300"},"PeriodicalIF":2.8000,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of chemical technology and biotechnology","FirstCategoryId":"5","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/jctb.7861","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"BIOTECHNOLOGY & APPLIED MICROBIOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

BACKGROUND

Bioreduction of perchlorate (ClO₄⁻) faces challenges such as slow degradation rates and long start-up periods, greatly limiting their practical application. This study investigated the effects of Fe(II) and Fe(III) at concentrations of 0, 0.1, 0.5, and 1 mmol L⁻¹ on the bioreduction characteristics of ClO₄⁻.

RESULTS

Compared to the control group, the reduction rates of ClO₄⁻ in the Fe(II)-0.1 and Fe(III)-0.1 systems increased by 7.46-fold and 7.24-fold, respectively. Complete degradation of ClO₄⁻ up to 1586.32 ± 18.60 mg L⁻¹ could be achieved within 96 h.

CONCLUSION

The results demonstrate that the addition of Fe(II) and Fe(III) effectively improves issues such as long start-up periods and slow degradation rates in the bioreduction of ClO₄⁻. The presence of Fe enhances the secretion of cytochrome c on the cell membrane, and the reversible redox reaction between Fe(II) and Fe(III) enhances electron transfer during the ClO₄⁻ reduction process. Furthermore, increased total membrane permeability promotes the absorption and utilization of nutrients by cells, accelerating cellular growth and metabolism. Analysis of the microbial community structure revealed that the addition of Fe(III) favored the abundance of Patescibacteria, Bacteroidota, and Firmicutes, facilitating extracellular electron transfer during high chlorate salt reduction and significantly enhancing the bioreduction efficiency of ClO₄⁻. © 2025 Society of Chemical Industry (SCI).

查看原文本刊更多论文

高氯酸盐在FeCl2和FeCl3存在下的生物降解增强

高氯酸盐（ClO4−）的生物还原面临降解速度慢和启动时间长等挑战，极大地限制了它们的实际应用。本研究考察了0、0.1、0.5和1 mmol L−1浓度Fe（II）和Fe（III）对ClO4−生物还原特性的影响。结果与对照组相比，Fe(II)-0.1和Fe(III)-0.1体系中ClO4−的还原率分别提高了7.46倍和7.24倍。可在96 h内完全降解高达1586.32±18.60 mg L−1的ClO4−。结论Fe（II）和Fe（III）的添加有效改善了ClO4−生物还原过程中启动时间长、降解速度慢的问题。铁的存在增强了细胞膜上细胞色素c的分泌，铁（II）和铁（III）之间的可逆氧化还原反应增强了ClO4−还原过程中的电子传递。此外，增加的总膜通透性促进了细胞对营养物质的吸收和利用，加速了细胞的生长和代谢。微生物群落结构分析表明，Fe（III）的加入有利于Patescibacteria， Bacteroidota和Firmicutes的丰度，促进高氯酸盐还原过程中的细胞外电子转移，显著提高ClO4−的生物还原效率。©2025化学工业学会（SCI）。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of chemical technology and biotechnology 工程技术-工程：化工

CiteScore

7.00

自引率

5.90%

发文量

268

审稿时长

1.7 months

期刊介绍： Journal of Chemical Technology and Biotechnology(JCTB) is an international, inter-disciplinary peer-reviewed journal concerned with the application of scientific discoveries and advancements in chemical and biological technology that aim towards economically and environmentally sustainable industrial processes.