Yuancheng Wang, Ao Li, Xia Li, Jiahui Yin, Xiaoxia Li, Yufeng Chen, Bokun Zou, Yongqiang Qian, Zhenyuan Sun
{"title":"用 Buchloe dactyloides (Nutt.) Engelm 与生物炭结合修复多环芳烃污染土壤的可行性研究","authors":"Yuancheng Wang, Ao Li, Xia Li, Jiahui Yin, Xiaoxia Li, Yufeng Chen, Bokun Zou, Yongqiang Qian, Zhenyuan Sun","doi":"10.1007/s11368-024-03807-9","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Purpose</h3><p>Although the combined plant-biochar remediation in improving soil contaminated by polycyclic aromatic hydrocarbons (PAHs) is considered efficient (Singha and Pandey in Crit Rev Biotechnol 41:749–766, 2021), the potential for application remains poorly known. This study used clones of <i>Buchloe dactyloides</i> to evaluate the effects of biochar on the capability of phytoremediation and rhizosphere soil contaminated with PAH.</p><h3 data-test=\"abstract-sub-heading\">Materials and methods</h3><p>Pot experiments were conducted to assess the effects of biochar on growth physiological parameters of <i>B. dactyloides</i> growth, accumulation of PAHs in <i>B. dactyloides</i>, and soil environment.</p><h3 data-test=\"abstract-sub-heading\">Results and discussion</h3><p>The results showed that the application of biochar increased the levels of antioxidants (free proline, glutathione, and ascorbic acid), antioxidant enzymes (catalase and laccase), and phytohormones (abscisic acid, indole acetic acid, jasmonic acid, salicylic acid, and gibberellin), decreased the accumulation of reactive oxygen species and lipid peroxidation in the roots, thereby enhancing the antioxidant defense ability and improving PAHs tolerance in roots of <i>B. dactyloides</i>. Moreover, the activities of enzymes (catalase, dehydrogenases, urease and protease) and soil nutrients in the rhizosphere soil were significantly increased, the content of PAHs decreased, and the health of the rhizosphere soil was improved.</p><h3 data-test=\"abstract-sub-heading\">Conclusions</h3><p>Biochar treatment promoted the accumulation of PAHs, improved soil environment and significantly enhanced the effects of phytoremediation. Therefore, the combined application of <i>B. dactyloides</i> and biochar can be considered as a feasible approach for the phytoremediation of PAH-contaminated soil.</p>","PeriodicalId":17139,"journal":{"name":"Journal of Soils and Sediments","volume":null,"pages":null},"PeriodicalIF":2.8000,"publicationDate":"2024-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Feasibility study of PAHs contaminated soil remediation by Buchloe dactyloides (Nutt.) Engelm combined with biochar\",\"authors\":\"Yuancheng Wang, Ao Li, Xia Li, Jiahui Yin, Xiaoxia Li, Yufeng Chen, Bokun Zou, Yongqiang Qian, Zhenyuan Sun\",\"doi\":\"10.1007/s11368-024-03807-9\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<h3 data-test=\\\"abstract-sub-heading\\\">Purpose</h3><p>Although the combined plant-biochar remediation in improving soil contaminated by polycyclic aromatic hydrocarbons (PAHs) is considered efficient (Singha and Pandey in Crit Rev Biotechnol 41:749–766, 2021), the potential for application remains poorly known. This study used clones of <i>Buchloe dactyloides</i> to evaluate the effects of biochar on the capability of phytoremediation and rhizosphere soil contaminated with PAH.</p><h3 data-test=\\\"abstract-sub-heading\\\">Materials and methods</h3><p>Pot experiments were conducted to assess the effects of biochar on growth physiological parameters of <i>B. dactyloides</i> growth, accumulation of PAHs in <i>B. dactyloides</i>, and soil environment.</p><h3 data-test=\\\"abstract-sub-heading\\\">Results and discussion</h3><p>The results showed that the application of biochar increased the levels of antioxidants (free proline, glutathione, and ascorbic acid), antioxidant enzymes (catalase and laccase), and phytohormones (abscisic acid, indole acetic acid, jasmonic acid, salicylic acid, and gibberellin), decreased the accumulation of reactive oxygen species and lipid peroxidation in the roots, thereby enhancing the antioxidant defense ability and improving PAHs tolerance in roots of <i>B. dactyloides</i>. Moreover, the activities of enzymes (catalase, dehydrogenases, urease and protease) and soil nutrients in the rhizosphere soil were significantly increased, the content of PAHs decreased, and the health of the rhizosphere soil was improved.</p><h3 data-test=\\\"abstract-sub-heading\\\">Conclusions</h3><p>Biochar treatment promoted the accumulation of PAHs, improved soil environment and significantly enhanced the effects of phytoremediation. 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Feasibility study of PAHs contaminated soil remediation by Buchloe dactyloides (Nutt.) Engelm combined with biochar
Purpose
Although the combined plant-biochar remediation in improving soil contaminated by polycyclic aromatic hydrocarbons (PAHs) is considered efficient (Singha and Pandey in Crit Rev Biotechnol 41:749–766, 2021), the potential for application remains poorly known. This study used clones of Buchloe dactyloides to evaluate the effects of biochar on the capability of phytoremediation and rhizosphere soil contaminated with PAH.
Materials and methods
Pot experiments were conducted to assess the effects of biochar on growth physiological parameters of B. dactyloides growth, accumulation of PAHs in B. dactyloides, and soil environment.
Results and discussion
The results showed that the application of biochar increased the levels of antioxidants (free proline, glutathione, and ascorbic acid), antioxidant enzymes (catalase and laccase), and phytohormones (abscisic acid, indole acetic acid, jasmonic acid, salicylic acid, and gibberellin), decreased the accumulation of reactive oxygen species and lipid peroxidation in the roots, thereby enhancing the antioxidant defense ability and improving PAHs tolerance in roots of B. dactyloides. Moreover, the activities of enzymes (catalase, dehydrogenases, urease and protease) and soil nutrients in the rhizosphere soil were significantly increased, the content of PAHs decreased, and the health of the rhizosphere soil was improved.
Conclusions
Biochar treatment promoted the accumulation of PAHs, improved soil environment and significantly enhanced the effects of phytoremediation. Therefore, the combined application of B. dactyloides and biochar can be considered as a feasible approach for the phytoremediation of PAH-contaminated soil.
期刊介绍:
The Journal of Soils and Sediments (JSS) is devoted to soils and sediments; it deals with contaminated, intact and disturbed soils and sediments. JSS explores both the common aspects and the differences between these two environmental compartments. Inter-linkages at the catchment scale and with the Earth’s system (inter-compartment) are an important topic in JSS. The range of research coverage includes the effects of disturbances and contamination; research, strategies and technologies for prediction, prevention, and protection; identification and characterization; treatment, remediation and reuse; risk assessment and management; creation and implementation of quality standards; international regulation and legislation.