Sustained and efficient remediation of biochar immobilized with Sphingobium abikonense on phenanthrene-copper co-contaminated soil and microbial preferences of the bacteria colonized in biochar
Abstract Immobilized microbial technology has been widely used in wastewater treatment, but it has been used less frequently for soil remediation, particularly in sites that are co-contaminated with organic compounds and heavy metals. In addition, there is limited knowledge on the efficiency of reme...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Springer
2023-07-01
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| Series: | Biochar |
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| Online Access: | https://doi.org/10.1007/s42773-023-00241-x |
| _version_ | 1797774009630195712 |
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| author | Ying Zhang Shuai Liu Lili Niu Aoxue Su Mingyue Li Yuqing Wang Yan Xu |
| author_facet | Ying Zhang Shuai Liu Lili Niu Aoxue Su Mingyue Li Yuqing Wang Yan Xu |
| author_sort | Ying Zhang |
| collection | DOAJ |
| description | Abstract Immobilized microbial technology has been widely used in wastewater treatment, but it has been used less frequently for soil remediation, particularly in sites that are co-contaminated with organic compounds and heavy metals. In addition, there is limited knowledge on the efficiency of remediation and microbial preferences to colonize the immobilized carriers. In this study, biochar immobilized with Sphingobium abikonense was introduced to remediate soils that were co-contaminated with phenanthrene (PHE) and copper (Cu), and the mechanisms of microbial assemblage were investigated. The immobilized microbial biochar maintained a degradation rate of more than 96% in both the first (0–6 d) and second (6–12 d) contamination periods. The addition of biochar increased the proportion of Cu bound to organic matter, and Fe–Mn oxide bound Cu in the soil. In addition, both Cu and PHE could be adsorbed into biochar pellets in the presence or absence of immobilized S. abikonense. The presence of biochar significantly increased the abundance of bacteria, such as Luteibacter, Bordetella and Dyella, that could degrade organic matter and tolerate heavy metals. Notably, the biochar could specifically select host microbes from the soil for colonization, while the presence of S. abikonense affected this preference. The autonomous selection facilitates the degradation of PHE and/or the immobilization of Cu in the soil. These results provide a green approach to efficiently and sustainably remediate soil co-contaminated with PHE and Cu and highlight the importance of microbial preference colonized in immobilized carriers. Graphical Abstract |
| first_indexed | 2024-03-12T22:14:43Z |
| format | Article |
| id | doaj.art-34db00532acc4df7960221b8fc6118f1 |
| institution | Directory Open Access Journal |
| issn | 2524-7867 |
| language | English |
| last_indexed | 2024-03-12T22:14:43Z |
| publishDate | 2023-07-01 |
| publisher | Springer |
| record_format | Article |
| series | Biochar |
| spelling | doaj.art-34db00532acc4df7960221b8fc6118f12023-07-23T11:21:47ZengSpringerBiochar2524-78672023-07-015111810.1007/s42773-023-00241-xSustained and efficient remediation of biochar immobilized with Sphingobium abikonense on phenanthrene-copper co-contaminated soil and microbial preferences of the bacteria colonized in biocharYing Zhang0Shuai Liu1Lili Niu2Aoxue Su3Mingyue Li4Yuqing Wang5Yan Xu6College of Environmental Sciences and Engineering, Qingdao UniversityCollege of Environment and Safety Engineering, Qingdao University of Science and TechnologyKey Laboratory of Pollution Exposure and Health Intervention Technology of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren UniversityCollege of Environmental Sciences and Engineering, Qingdao UniversityCollege of Environmental Sciences and Engineering, Qingdao UniversityCollege of Environmental Sciences and Engineering, Qingdao UniversityCollege of Environmental Sciences and Engineering, Qingdao UniversityAbstract Immobilized microbial technology has been widely used in wastewater treatment, but it has been used less frequently for soil remediation, particularly in sites that are co-contaminated with organic compounds and heavy metals. In addition, there is limited knowledge on the efficiency of remediation and microbial preferences to colonize the immobilized carriers. In this study, biochar immobilized with Sphingobium abikonense was introduced to remediate soils that were co-contaminated with phenanthrene (PHE) and copper (Cu), and the mechanisms of microbial assemblage were investigated. The immobilized microbial biochar maintained a degradation rate of more than 96% in both the first (0–6 d) and second (6–12 d) contamination periods. The addition of biochar increased the proportion of Cu bound to organic matter, and Fe–Mn oxide bound Cu in the soil. In addition, both Cu and PHE could be adsorbed into biochar pellets in the presence or absence of immobilized S. abikonense. The presence of biochar significantly increased the abundance of bacteria, such as Luteibacter, Bordetella and Dyella, that could degrade organic matter and tolerate heavy metals. Notably, the biochar could specifically select host microbes from the soil for colonization, while the presence of S. abikonense affected this preference. The autonomous selection facilitates the degradation of PHE and/or the immobilization of Cu in the soil. These results provide a green approach to efficiently and sustainably remediate soil co-contaminated with PHE and Cu and highlight the importance of microbial preference colonized in immobilized carriers. Graphical Abstracthttps://doi.org/10.1007/s42773-023-00241-xCo-contaminationImmobilized bacteriaMicrobial selectionBiocharMicrobial communities |
| spellingShingle | Ying Zhang Shuai Liu Lili Niu Aoxue Su Mingyue Li Yuqing Wang Yan Xu Sustained and efficient remediation of biochar immobilized with Sphingobium abikonense on phenanthrene-copper co-contaminated soil and microbial preferences of the bacteria colonized in biochar Biochar Co-contamination Immobilized bacteria Microbial selection Biochar Microbial communities |
| title | Sustained and efficient remediation of biochar immobilized with Sphingobium abikonense on phenanthrene-copper co-contaminated soil and microbial preferences of the bacteria colonized in biochar |
| title_full | Sustained and efficient remediation of biochar immobilized with Sphingobium abikonense on phenanthrene-copper co-contaminated soil and microbial preferences of the bacteria colonized in biochar |
| title_fullStr | Sustained and efficient remediation of biochar immobilized with Sphingobium abikonense on phenanthrene-copper co-contaminated soil and microbial preferences of the bacteria colonized in biochar |
| title_full_unstemmed | Sustained and efficient remediation of biochar immobilized with Sphingobium abikonense on phenanthrene-copper co-contaminated soil and microbial preferences of the bacteria colonized in biochar |
| title_short | Sustained and efficient remediation of biochar immobilized with Sphingobium abikonense on phenanthrene-copper co-contaminated soil and microbial preferences of the bacteria colonized in biochar |
| title_sort | sustained and efficient remediation of biochar immobilized with sphingobium abikonense on phenanthrene copper co contaminated soil and microbial preferences of the bacteria colonized in biochar |
| topic | Co-contamination Immobilized bacteria Microbial selection Biochar Microbial communities |
| url | https://doi.org/10.1007/s42773-023-00241-x |
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