In situ bioaugmented phytoremediation of cadmium and crude oil co-contaminated soil by Ocimum gratissimum in association with PGPR Micrococcus luteus WN01.

IF 3.4 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES International Journal of Phytoremediation Pub Date : 2024-11-06 DOI:10.1080/15226514.2024.2415535

Pem Choden, Toemthip Poolpak, Prayad Pokethitiyook, Kwang Mo Yang, Maleeya Kruatrachue

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Abstract

Heavy metals and petroleum oil are the two most important contaminants in the environment. Currently, phytoremediation is regarded as an effective and affordable solution that allows the attenuation of toxic pollutants through the use of plants. Not many studies are carried out regarding the use of aromatic plants capable of remediating soil that is co-contaminated by heavy metal and petroleum hydrocarbons. A pot experiment was conducted to investigate the influence of cadmium-resistant PGPR Micrococcus luteus on the phytoremediation efficiency of Ocimum gratissimum in Cd and petroleum co-contaminated soil. The plants were harvested after 60 days of treatment and their growth and biomass were determined. The accumulation of Cd in plant shoots and roots was determined. The residual petroleum hydrocarbon concentration during the 60 days of the phytoremediation experiment was determined using GC-FID. O. gratissimum with M. luteus showed the highest Cd accumulation (14.05 mg kg^-1) and the highest reduction of TPH (46.64%). M. luteus ameliorated contaminant toxicity and promoted biomass production of O. gratissimum. These results demonstrated that O. gratissimum in combination with M. luteus can be efficiently used to remediate Cd and petroleum-co-contaminated soils.

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欧芹与 PGPR 微球菌黄体 WN01 共同对镉和原油共污染土壤进行原位生物增强植物修复。

重金属和石油是环境中最重要的两种污染物。目前，植物修复被认为是一种有效且经济实惠的解决方案，可以通过利用植物来衰减有毒污染物。关于利用芳香植物修复受重金属和石油碳氢化合物共同污染的土壤的研究并不多。我们进行了一项盆栽实验，研究抗镉的 PGPR 微球菌（Micrococcus luteus）对受镉和石油共同污染的土壤中的欧柯玛（Ocimum gratissimum）的植物修复效率的影响。处理 60 天后收获植物，测定其生长和生物量。测定了镉在植物芽和根中的积累。在 60 天的植物修复实验中，使用 GC-FID 测定了石油烃的残留浓度。含黄体菌的 O. gratissimum 的镉积累量最高（14.05 mg kg-1），TPH 的减少量最高（46.64%）。黄体霉菌可改善污染物的毒性，并促进 O. gratissimum 的生物量生产。这些结果表明，O. gratissimum 与黄体霉菌结合使用可有效修复镉和石油共污染土壤。

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来源期刊

International Journal of Phytoremediation 环境科学-环境科学

CiteScore

7.60

自引率

5.40%

发文量

145

审稿时长

3.4 months

期刊介绍： The International Journal of Phytoremediation (IJP) is the first journal devoted to the publication of laboratory and field research describing the use of plant systems to solve environmental problems by enabling the remediation of soil, water, and air quality and by restoring ecosystem services in managed landscapes. Traditional phytoremediation has largely focused on soil and groundwater clean-up of hazardous contaminants. Phytotechnology expands this umbrella to include many of the natural resource management challenges we face in cities, on farms, and other landscapes more integrated with daily public activities. Wetlands that treat wastewater, rain gardens that treat stormwater, poplar tree plantings that contain pollutants, urban tree canopies that treat air pollution, and specialized plants that treat decommissioned mine sites are just a few examples of phytotechnologies.