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Selenium improved the combined remediation efficiency of Pseudomonas aeruginosa and ryegrass on cadmium-nonylphenol co-contaminated soil

文献类型： 外文期刊

作者： Ni, Gang 1 ; Shi, Guangyu 5 ; Hu, Chengxiao 1 ; Wang, Xu 6 ; Nie, Min 1 ; Cai, Miaomiao 1 ; Cheng, Qin 1 ; Zhao, Xiaohu 1 ;

作者机构： 1.Huazhong Agr Univ, Coll Resources & Environm, Wuhan 430070, Peoples R China

2.Huazhong Agr Univ, Hubei Prov Engn Lab New Type Fertilizer, Wuhan 430070, Peoples R China

3.Huazhong Agr Univ, Res Ctr Trace Elements, Wuhan 430070, Peoples R China

4.Huazhong Agr Univ, Hubei Key Lab Soil Environm & Pollut Remediat, Wuhan 430070, Peoples R China

5.Suzhou Univ Sci & Technol, Coll Environm Sci & Engn, Suzhou 215009, Peoples R China

6.Guangdong Acad Agr Sci, Inst Qual Stand & Monitoring Technol Agroprod, Guangzhou 510640, Peoples R China

关键词： Cd-NP co-Contamination; Phytoremediation; Se; P; aeruginosa; Soil microbes

期刊名称：ENVIRONMENTAL POLLUTION （ 影响因子：8.071； 五年影响因子：8.35 ）

ISSN： 0269-7491

年卷期： 2021 年 287 卷

页码：

收录情况： SCI

摘要： Most chemical plant wastewater contains both organic and inorganic pollutants, which are easy to diffuse along with surface runoff. The combined pollution of nonylphenol (NP) and cadmium (Cd) in soil is a serious problem that has not attracted enough attention. Based on the effects of selenium (Se) and Pseudomonas aeruginosa (P. aeruginosa) on plant and soil microbial communities, we speculated that the application of Se and P. aeruginosa in soil could improve the phytoremediation efficiency of ryegrass on contaminated soil. In this study, pot experiments with Cd and NP co-contaminated soil were conducted, and the results showed that application of P. aeruinosa alone could improve the removal rates of NP and Cd by ryegrass, and the supple-mentary of Se further enhanced the effect of micro-phyto remediation, with the highest removal rates of NP and Cd were 79.6% and 49.4%, respectively. The application of P. aeruginosa plus Se reduced the adsorption of Cd and NP through C-O and Si-O-Fe of the soil, changed the enzyme activity, and also affected the changing trend of the microbial community in soil. Pseudomonas, Sphingomonadales, Nitrospira, and other beneficial bacteria were enriched after a 60-day period with P. aeruginosa and Se treatment, thus promoting the removal of NP and Cd. In light of the above results, we suggest that P. aeruginosa application can efficiently facilitate the phytor-emediation of ryegrass on Cd-NP co-contaminated soil, and Se supplementation in soil showed the synergistic effect on the remediation.

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