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Jiang W, Li D, Yang J, Ye Y, Luo J, Zhou X, Yang L, Liu Z. A combined passivator of zeolite and calcium magnesium phosphate fertilizer: Passivation behavior and mechanism for Cd (II) in composting. Environ Res 2023; 231:116306. [PMID: 37268202 DOI: 10.1016/j.envres.2023.116306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 05/27/2023] [Accepted: 05/31/2023] [Indexed: 06/04/2023]
Abstract
Passivation of heavy metals is one of the most efficient techniques to improve the quality of compost. Many studies confirmed the passivation effect of passivators (e.g., zeolite and calcium magnesium phosphate fertilizer) on cadmium (Cd), but passivators with single component could not effectively passivate Cd in the long-term operation of composting. In the present study, a combined passivator of zeolite and calcium magnesium phosphate fertilizer (ZCP) was used to explore its impacts of adding at different composting periods (heating period, thermophilic period, cooling period) on the Cd control, compost quality (e.g., temperature, moisture content and humification), microbial community structure as well as the compost available forms of Cd and addition strategy of ZCP. Results showed that Cd passivation rate could be increased by 35.70-47.92% under all treatments in comparison to the control treatment. By altering bacterial community structure, reducing Cd bioavailability and improving the chemical properties of the compost, the combined inorganic passivator could achieve high efficiency for Cd passivation. To sum up, the addition of ZCP at different composting periods has effects on the process and quality of composting, which could provide ideas for the optimization of the passivators addition strategy.
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Affiliation(s)
- Wei Jiang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, No. 1037 Luoyu Road, Wuhan, 430074, China
| | - Dian Li
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, No. 1037 Luoyu Road, Wuhan, 430074, China
| | - Junlin Yang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, No. 1037 Luoyu Road, Wuhan, 430074, China
| | - Yuanyao Ye
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, No. 1037 Luoyu Road, Wuhan, 430074, China.
| | - Jiwu Luo
- Central & Southern China Municipal Engineering Design and Research Institute Co,Ltd, No. 8 Jiefang Park Rord, Wuhan, 430010, China
| | - Xiaojuan Zhou
- Central & Southern China Municipal Engineering Design and Research Institute Co,Ltd, No. 8 Jiefang Park Rord, Wuhan, 430010, China
| | - Lin Yang
- Wuhan Huantou Solid Waste Operation Co., Ltd, No. 37 Xinye Road, Wuhan, 430024, China
| | - Zizheng Liu
- School of Civil Engineering, Wuhan University, No. 8 Donghu South Road, Wuhan, 430072, China
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Qu J, Zhang X, Guan Q, Kong L, Yang R, Ma X. Effects of biochar underwent different aging processes on soil properties and Cd passivation. Environ Sci Pollut Res Int 2022; 29:57885-57895. [PMID: 35359207 DOI: 10.1007/s11356-022-19867-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 03/19/2022] [Indexed: 06/14/2023]
Abstract
This study aims to determine the efficacy of biochar underwent different aging process including freeze-thaw cycling aging (FB), acidified aging (AB), and microbial aging (MB) on soil physicochemical properties and Cd passivation. The Cd-contaminated soil (3 mg·kg-1) amended with the three kinds of aging biochar (at 4% w:w) were subjected to 56-day incubation. The application of FB and MB in soil increased the soil pH (0.82-1.04, 0.27-9.36), CEC (1.06-2.53 cmol·kg-1, 1.66-2.59 cmol·kg-1), and organic matter content (2.28-4.67 g·kg-1, 3.70-5.48 g·kg-1). FB performed best in stabilizing Cd (17.06-23.65%). On the contrary, AB decreased the soil pH and CEC by 0.82-1.04 and 1.32-2.40 cmol·kg-1 and activated Cd by 11.6-19.24%. In conclusion, the efficacy of biochar on soil remediation and Cd passivation varied with aging method and cycle, and freeze-thaw treatment is an effective approach to improve the performance of biochar.
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Affiliation(s)
- Juanjuan Qu
- College of Resources and Environmental Science, Northeast Agricultural University, Harbin, 150030, China
- Key Laboratory of Utilization and Protection of Black Soil in Cold Region, Harbin, 150030, China
| | - Xu Zhang
- College of Resources and Environmental Science, Northeast Agricultural University, Harbin, 150030, China
| | - Qingkai Guan
- College of Resources and Environmental Science, Northeast Agricultural University, Harbin, 150030, China
| | - Linghui Kong
- College of Resources and Environmental Science, Northeast Agricultural University, Harbin, 150030, China
| | - Rui Yang
- College of Resources and Environmental Science, Northeast Agricultural University, Harbin, 150030, China
| | - Xianfa Ma
- College of Resources and Environmental Science, Northeast Agricultural University, Harbin, 150030, China.
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Liu W, Zuo Q, Zhao C, Wang S, Shi Y, Liang S, Zhao C, Shen S. Effects of Bacillus subtilis and nanohydroxyapatite on the metal accumulation and microbial diversity of rapeseed (Brassica campestris L.) for the remediation of cadmium-contaminated soil. Environ Sci Pollut Res Int 2018; 25:25217-25226. [PMID: 29943254 DOI: 10.1007/s11356-018-2616-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 06/18/2018] [Indexed: 06/08/2023]
Abstract
This study investigated the effects of the co-application of Bacillus subtilis and nanohydroxyapatite (NHAP) on plant growth, soil cadmium (Cd) dynamics, and the microbiological characteristics (such as enzyme activity and bacterial species richness) of the rhizosphere soil. Rapeseed was used as a model plant in pot experiments. Different concentrations of B. subtilis and 0.5% NHAP were applied alone and in combination to Cd-contaminated soil. The Cd contents in soils and plants as well as the rhizospheric microorganism diversity were assessed. The addition of B. subtilis or NHAP alone increased the soil Cd content and decreased the plant Cd content, while their co-application more effectively increased the soil and plant Cd contents than either treatment alone. B. subtilis and NHAP reduced the plant Cd content by 43.15-57.04% compared with that in the control. Rhizosphere community richness and bacterial diversity were significantly increased after co-application of B. subtilis and NHAP. Co-application of B. subtilis and NHAP effectively promoted rapeseed growth and improved Cd-contaminated soil remediation.
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Affiliation(s)
- Wei Liu
- College of Chemistry and Environmental Science, Hebei University, Baoding, 071002, China
| | - Qingqing Zuo
- College of Chemistry and Environmental Science, Hebei University, Baoding, 071002, China
| | - Chenchen Zhao
- College of Chemistry and Environmental Science, Hebei University, Baoding, 071002, China
| | - Shutao Wang
- Agriculture University of Hebei, 289 Lingyu Temple Street, Baoding, 071002, China.
| | - Yaopeng Shi
- College of Chemistry and Environmental Science, Hebei University, Baoding, 071002, China
| | - Shuxuan Liang
- College of Chemistry and Environmental Science, Hebei University, Baoding, 071002, China
| | - Chunxia Zhao
- College of Chemistry and Environmental Science, Hebei University, Baoding, 071002, China
| | - Shigang Shen
- College of Chemistry and Environmental Science, Hebei University, Baoding, 071002, China
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