Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, School of Environment, Hohai University, Nanjing, China.
Int J Phytoremediation. 2024;26(12):1914-1922. doi: 10.1080/15226514.2024.2361318. Epub 2024 Jun 7.
Crude oil spills imperil aquatic ecosystems globally, prompting innovative solutions such as microalgae-based bioremediation. This study explores the potential of and , for crude oil spill phycoremediation under mixotrophic conditions and varying crude oil concentrations (0.5-2%). demonstrated notable resilience, thriving up to 1% crude oil exposure, while adapted to lower concentrations. Optimal growth for both was observed at 0.5% exposure. Chlorophyll a content in increases at 0.5% exposure but declines above 1%, while a decline was noticeable in chlorophyll b in treatment groups above 1%. Carotenoid levels varied, displaying the highest levels at higher concentrations above 1.5%. Similarly, showed increased chlorophyll a content at 0.5% exposure, with stable carotenoid levels and a decline in chlorophyll b content at higher concentrations. GC/MS analyses indicated efficiently degraded aliphatic compounds like decane and tridecane, surpassing in degrading both aliphatic and aromatic hydrocarbons. Growth kinetics was best represented by the modified Gompertz and logistic models. These findings highlight the species-specific adaptability and optimal concentration for microalgae to degrade crude oil effectively, advancing phycoremediation processes and strategies critical for environmental restoration.
原油泄漏对全球水生生态系统构成威胁，促使人们寻求创新解决方案，如基于微藻的生物修复。本研究探讨了 和 在混合营养条件下及不同原油浓度（0.5-2%）下用于原油泄漏修复的潜力。 表现出显著的适应性，在高达 1%的原油暴露下仍能茁壮成长，而 则适应较低的浓度。两者的最佳生长均在 0.5%暴露下观察到。 中的叶绿素 a 含量在 0.5%暴露下增加，但在 1%以上时下降，而处理组中叶绿素 b 的含量在 1%以上时明显下降。类胡萝卜素水平变化，在 1.5%以上的较高浓度下显示出最高水平。同样， 在 0.5%暴露下表现出较高的叶绿素 a 含量，类胡萝卜素水平稳定，在较高浓度下叶绿素 b 含量下降。GC/MS 分析表明 能有效降解直链烷烃和十三烷等脂肪族化合物，在降解脂肪族和芳香族碳氢化合物方面优于 。生长动力学最好由修正的 Gompertz 和 logistic 模型表示。这些发现突出了微藻降解原油的特定物种适应性和最佳浓度，为环境修复的生物修复过程和策略提供了重要进展。
