全氟辛烷磺酸（PFOS）作为一种新兴污染物的生物降解。

Biodegradation of perfluorooctanesulfonate (PFOS) as an emerging contaminant.

机构信息

Department of Environment and Energy Engineering, College of Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 500-757, Republic of Korea; Gyeongnam Department of Environmental Toxicology and Chemistry, Korea Institute of Toxicology (KIT), 17 Jeigok-gil, Munsan-eup, Jinju, Gyeongsangnam-do 660-844, Republic of Korea.

Department of Environment and Energy Engineering, College of Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 500-757, Republic of Korea.

出版信息

Chemosphere. 2014 Aug;109:221-5. doi: 10.1016/j.chemosphere.2014.01.072. Epub 2014 Feb 18.

DOI:10.1016/j.chemosphere.2014.01.072

PMID:24556541

Abstract

Perfluorooctanesulfonate (PFOS) is a compound of global concern because of its persistence and bioaccumulation in the environment. Nevertheless, little is known of the potential for PFOS biodegradation, even though the importance of characterizing the function and activity of microbial populations detected in the environment has been discussed. This study focused on the biodegradation of PFOS by a specific microorganism. Through this study, we have identified the aerobic microorganism for the specific decomposition of PFOS from wastewater treatment sludge, as a well-known sink for environmental PFOS. This species was Pseudomonas aeruginosa strain HJ4 with a 99% similarity, a mesophilic rod type bacteria (30-37°C). A pH range of 7-9 was determined to be optimal for the growth of strain HJ4. In this study approximately 67% over a range of concentrations (1400-1800μgL(-)(1)) for PFOS was biologically decomposed by P. aeruginosa after 48h incubation. This result is reported here for the first time, which strongly pertains to the efficient biodegradation of PFOS. Therefore, our study is considered a major advancement in sustainable PFOS treatment.

摘要

全氟辛烷磺酸（PFOS）是一种全球性关注的化合物，因为它在环境中具有持久性和生物累积性。然而，尽管已经讨论了表征环境中检测到的微生物种群的功能和活性的重要性，但对于 PFOS 生物降解的潜力知之甚少。本研究专注于特定微生物对 PFOS 的生物降解。通过这项研究，我们从废水处理污泥中确定了一种好氧微生物，用于特定分解 PFOS，因为这是环境中 PFOS 的已知汇。该物种是铜绿假单胞菌 HJ4 菌株，相似度为 99%，是一种嗜温杆状细菌（30-37°C）。确定 HJ4 菌株的最佳生长 pH 值范围为 7-9。在这项研究中，经过 48 小时孵育，铜绿假单胞菌将 PFOS 的浓度范围（1400-1800μgL(-)(1)）约 67%进行了生物分解。这是首次报道这一结果，这与 PFOS 的有效生物降解密切相关。因此，我们的研究被认为是 PFOS 处理可持续发展的重大进展。