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IF 2.5 4区环境科学与生态学 Q3 ENGINEERING, ENVIRONMENTAL

Water Environment Research Pub Date : 2025-01-01 DOI:10.1002/wer.70009

Zhuorong Du, Xudong Wang, Zhao Song, Baikang Zhu, Lijuan Feng, Zhi Chen, Qingguo Chen

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引用次数: 0

摘要

海洋漏油会严重影响生态系统，破坏海洋生物多样性和栖息地。微生物修复是清除稀薄浮油污染的有效方法。本研究调查了固定在魔芋葡甘露聚糖（KGM）气凝胶中的小球藻 LH-1 对低浓度溢油的吸附和降解情况。通过细菌多样性测序分析了固定在 KGM 气凝胶中的小球藻对海水环境中细菌群落结构的影响。在含有 0.01 和 1.00 克/升原油的海水中，经过 14 天的 KGM 气凝胶固定 C. vulgaris 修复，原油去除率分别达到 98.73% 和 95.13%。FDA 水解酶活性曲线表明，固定 C. vulgaris 组的微生物生长活性明显高于其他组。修复后发现，海水中的前三大优势细菌属分别是 Vitellibacter、Roseitalea 和 Methylophaga。Vitellibacter 属因其在海洋环境中降解多环芳烃（PAHs）的能力而闻名，在经 KGM 气凝胶固定的 C. vulgaris 处理过的海水中，Vitellibacter 属的数量有所增加，这表明在固定 C. vulgaris 的存在下，多环芳烃的降解能力得到了增强。利用 PICRUSt 进行的功能预测表明，KGM 气凝胶固定化褐藻促进了细菌的油脂代谢能力。实践要点：KGM 气凝胶固定化微藻在不同浓度的油类中表现出较高的降解效率。KGM 气凝胶能有效地限制褐藻，减少海洋系统中的损失。分析了 KGM 气凝胶固定的褐藻对海洋环境中细菌群落结构的影响。固定化的褐藻增强了海水中多环芳烃降解细菌（如Vitellibacter）的生长。

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Effect of konjac glucomannan aerogel-immobilized Chlorella vulgaris LH-1 on oil-contaminated seawater remediation and endogenous bacterial community diversity.

Ocean oil spills can severely impact ecosystems and disrupt marine biodiversity and habitats. Microbial remediation is an effective method for removing thin oil slick contamination. In this study, the adsorption and degradation of low-concentration oil spills by Chlorella vulgaris LH-1 immobilized in konjac glucomannan (KGM) aerogel were investigated. The effect of the KGM aerogel-immobilized C. vulgaris on the bacterial community structure in seawater environments was analyzed through bacterial diversity sequencing. In seawater containing 0.01 and 1.00 g/L of crude oil, after 14 days of remediation with the KGM aerogel-immobilized C. vulgaris, crude oil removal rates of 98.73% and 95.13% were achieved, respectively. The FDA hydrolytic enzyme activity curve indicated that the microbial growth activity in the immobilized C. vulgaris group was significantly higher than that in other groups. After remediation, the top three dominant bacterial genera in the seawater were found to be Vitellibacter, Roseitalea, and Methylophaga. Vitellibacter, a genus known for its ability to degrade polycyclic aromatic hydrocarbons (PAHs) in marine environments, showed increased abundance in seawater treated with the KGM aerogel-immobilized C. vulgaris, suggesting enhanced PAH degradation capability in the presence of the immobilized C. vulgaris. Functional prediction using PICRUSt indicated that the oil metabolism capability of bacteria was promoted by the KGM aerogel-immobilized C. vulgaris. PRACTITIONER POINTS: High degradation efficiency across various oil concentrations is exhibited by KGM-immobilized microalgae. KGM aerogels effectively confine C.vulgaris, reducing loss in marine systems. The impact of KGM aerogel-immobilized C. vulgaris on bacterial community structure in marine environments was analyzed. Immobilized C. vulgaris enhanced the growth of polycyclic aromatic hydrocarbon-degrading bacteria, such as Vitellibacter, in seawater.

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来源期刊

Water Environment Research 环境科学-工程：环境

CiteScore

6.30

自引率

0.00%

发文量

138

审稿时长

11 months

期刊介绍： Published since 1928, Water Environment Research (WER) is an international multidisciplinary water resource management journal for the dissemination of fundamental and applied research in all scientific and technical areas related to water quality and resource recovery. WER''s goal is to foster communication and interdisciplinary research between water sciences and related fields such as environmental toxicology, agriculture, public and occupational health, microbiology, and ecology. In addition to original research articles, short communications, case studies, reviews, and perspectives are encouraged.