Biochar and bacteria inoculated biochar enhanced Cd and Cu immobilization and enzymatic activity in a polluted soil
Tu, Chen; Wei, Jing; Guan, Feng; Liu, Ying; Sun, Yuhuan; Luo, Yongming
Source PublicationENVIRONMENT INTERNATIONAL
2020-04
Volume137Pages:UNSP 105576
KeywordMICROBIAL COMMUNITY METAL AVAILABILITY STRAW BIOCHAR PLANT UPTAKE CADMIUM SORPTION LEAD ADSORPTION BIOACCESSIBILITY BIOAVAILABILITY
MOST Discipline CatalogueEnvironmental Sciences
DOI10.1016/j.envint.2020.105576
Contribution Rank[Tu, Chen; Wei, Jing; Guan, Feng; Liu, Ying; Luo, Yongming] Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China; [Guan, Feng; Sun, Yuhuan] Qingdao Univ Sci & Technol, Coll Environm & Safety Engn, Qingdao 266042, Peoples R China; [Luo, Yongming] Chinese Acad Sci, Inst Soil Sci, CAS Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Peoples R China; [Tu, Chen; Wei, Jing; Luo, Yongming] Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China
Department海岸带环境过程实验室
AbstractThe application of biochar in the remediation of heavy metal contaminated soil has received increasing global attention during the past decade. Although there has been some review work on the mechanism of heavy metals stabilization by biochar, the effects and mechanisms of interaction between biochar and functional microbes such as heavy metal tolerant, adsorption and transformation microbial strains remains unclear. In this paper, maize biochar and a heavy metal-tolerant strain Pseudomonas sp. NT-2 were selected to investigate the dynamic effects and potential mechanisms of biochar and bacteria loaded biochar on the stabilization of Cd and Cu mixed contaminated soil by a 75-day pot experiment. The results showed that, compared to the single biochar amendment, the application of biochar inoculated with NT-2 strain at the rate of 5% significantly increased the soil pH at the initial stage of incubation, and followed by a slight decline to a neutral-alkaline range during the reaction. The addition of NT-2 loaded biochar could also significantly increase the proportion of residual fraction of Cd and Cu, thus reduce the proportion of exchangeable and carbonate bound species in the soil, which lead to the decreasing of plant and human bioavailability of the metal in the soil indicated by DTPA and simulated human gastric solution extraction (UBM), respectively. Finally, the application of bacterial loaded biochar also markedly enhanced soil urease and catalase activities during the later stage of the incubation, and improved soil microbial community at the end of incubation, which indicates a recovery of soil function after the metal stabilization. The research results may provide some new insights into the development of functional materials and technologies for the green and sustainable remediation of heavy metal contaminated soil by the combination of biochar and functional microorganisms.
SubtypeArticle
Indexed BySCI
Language英语
WOS KeywordMICROBIAL COMMUNITY ; METAL AVAILABILITY ; STRAW BIOCHAR ; PLANT UPTAKE ; CADMIUM ; SORPTION ; LEAD ; ADSORPTION ; BIOACCESSIBILITY ; BIOAVAILABILITY
WOS IDWOS:000517970800011
Funding OrganizationNational Key R&D Program of China [2016YFE0106400, 2018YFC1801001] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China [41977139, 41571310] ; Yantai Key Research and Development Program [2019XDHZ104]
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/25058
Collection中科院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
Affiliation1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China;
2.Qingdao Univ Sci & Technol, Coll Environm & Safety Engn, Qingdao 266042, Peoples R China;
3.Chinese Acad Sci, Inst Soil Sci, CAS Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Peoples R China;
4.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China
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GB/T 7714
Tu, Chen,Wei, Jing,Guan, Feng,et al. Biochar and bacteria inoculated biochar enhanced Cd and Cu immobilization and enzymatic activity in a polluted soil[J]. ENVIRONMENT INTERNATIONAL,2020,137:UNSP 105576.
APA Tu, Chen,Wei, Jing,Guan, Feng,Liu, Ying,Sun, Yuhuan,&Luo, Yongming.(2020).Biochar and bacteria inoculated biochar enhanced Cd and Cu immobilization and enzymatic activity in a polluted soil.ENVIRONMENT INTERNATIONAL,137,UNSP 105576.
MLA Tu, Chen,et al."Biochar and bacteria inoculated biochar enhanced Cd and Cu immobilization and enzymatic activity in a polluted soil".ENVIRONMENT INTERNATIONAL 137(2020):UNSP 105576.
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