Phytoremediation of crude oil-contaminated sediment using Suaeda heteroptera enhanced by Nereis succinea and oil-degrading bacteria

被引：7

作者：

Liu, Huan ^{[1
,2
]}

Huang, Xin ^{[1
,2
]}

Fan, Xiaoru ^{[1
,2
]}

Wang, Qingzhi ^{[1
,2
]}

Liu, Yuan ^{[1
,2
]}

Wei, Haifeng ^{[1
,2
]}

He, Jie ^{[1
,2
]}

机构：

[1] Dalian Ocean Univ, Coll Marine Technol & Environm, Dalian, Peoples R China

[2] Dalian Ocean Univ, Key Lab Nearshore Marine Environm Sci & Technol Li, Dalian, Peoples R China

来源：

INTERNATIONAL JOURNAL OF PHYTOREMEDIATION | 2023年 / 25卷 / 03期

基金：

国家重点研发计划;

关键词：

Phytoremediation; Suaeda heteroptera; Nereis succinea; oil-degrading bacteria; PETROLEUM-HYDROCARBONS; TALL FESCUE; SOIL; REMEDIATION; DEGRADATION; COMBINATION; CADMIUM; PLANTS; CD;

D O I：

10.1080/15226514.2022.2083576

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

NOVELTY STATEMENTOur study attempted to investigate the stimulatory effect of a promising phytoremediation strategy consisting of Suaeda heteroptera (S. heteroptera), Nereis succinea (N. succinea), and oil-degrading bacteria for cleaning up TPH in spiked sediment. Planting S. heteroptera can greatly increase sediment TPH removal, and its removal was enhanced greater after inoculation with oil-degrading bacteria and/or N. succinea. Moreover, the promising phytoremediation strategy developed in the current work can serve as an efficient, novel approach to removal TPH in sediment/soil. In our opinions, these findings provide insights into the assessment of their ecological risks in the environments that are of interest to broad readership of International Journal of Phytoremediation. A 150-day experiment was performed to investigate the stimulatory effect of a promising phytoremediation strategy consisting of Suaeda heteroptera (S. heteroptera), Nereis succinea (N. succinea), and oil-degrading bacteria for cleaning up total petroleum hydrocarbons (TPHs) in spiked sediment. Inoculation with oil-degrading bacteria and/or N. succinea increased plant yield and TPH accumulation in S. heteroptera plants. The highest TPH dissipation (40.5%) was obtained in the combination treatment, i.e., S. heteroptera + oil-degrading bacteria + N. succinea, in which the sediment TPH concentration decreased from an initial value of 3955 to 2355 mg/kg in 150 days. BAF, BCF, and TF confirmed the role of N. succinea and oil-degrading bacteria in the amelioration and translocation of TPHs. In addition, TPH toxicity of S. heteroptera was alleviated by N. succinea and oil-degrading bacteria addition through the reduction of oxidative stress. Therefore, S. heteroptera could be used for cleaning up oil-contaminated sediment, particularly in the presence of oil-degrading bacteria + N. succinea. Field studies on oil-degrading bacteria + N. succinea may provide new insights on the rehabilitation and restoration of sediments contaminated by TPHs.

引用

页码：322 / 328

页数：7

共 46 条

[1] Enhanced remediation of chlorpyrifos from soil using ryegrass (Lollium multiflorum) and chlorpyrifos-degrading bacterium Bacillus pumilus C2A1 [J].