Methane Emission Reduction and Biological Characteristics of Landfill Cover Soil Amended With Hydrophobic Biochar
Biochar-amended landfill cover soil (BLCS) can promote CH4 and O2 diffusion, but it increases rainwater entry in the rainy season, which is not conducive to CH4 emission reduction. Hydrophobic biochar–amended landfill cover soil (HLCS) was prepared to investigate the changes in CH4 emission reductio...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-06-01
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| Series: | Frontiers in Bioengineering and Biotechnology |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fbioe.2022.905466/full |
| _version_ | 1811244763322515456 |
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| author | Yongli Qin Yongli Qin Yongli Qin Beidou Xi Beidou Xi Xiaojie Sun Xiaojie Sun Hongxia Zhang Hongxia Zhang Chennan Xue Chennan Xue Beibei Wu Beibei Wu |
| author_facet | Yongli Qin Yongli Qin Yongli Qin Beidou Xi Beidou Xi Xiaojie Sun Xiaojie Sun Hongxia Zhang Hongxia Zhang Chennan Xue Chennan Xue Beibei Wu Beibei Wu |
| author_sort | Yongli Qin |
| collection | DOAJ |
| description | Biochar-amended landfill cover soil (BLCS) can promote CH4 and O2 diffusion, but it increases rainwater entry in the rainy season, which is not conducive to CH4 emission reduction. Hydrophobic biochar–amended landfill cover soil (HLCS) was prepared to investigate the changes in CH4 emission reduction and biological characteristics, and BLCS was prepared as control. Results showed that rainwater retention time in HLCS was reduced by half. HLCS had a higher CH4 reduction potential, achieving 100% CH4 removal at 25% CH4 content of landfill gas, and its main contributors to CH4 reduction were found to be at depths of 10–30 cm (upper layer) and 50–60 cm (lower layer). The relative abundances of methane-oxidizing bacteria (MOB) in the upper and lower layers of HLCS were 55.93% and 46.93%, respectively, higher than those of BLCS (50.80% and 31.40%, respectively). Hydrophobic biochar amended to the landfill cover soil can realize waterproofing, ventilation, MOB growth promotion, and efficient CH4 reduction. |
| first_indexed | 2024-04-12T14:30:37Z |
| format | Article |
| id | doaj.art-90b07999bdd145fb8c6b844c7a3a3dee |
| institution | Directory Open Access Journal |
| issn | 2296-4185 |
| language | English |
| last_indexed | 2024-04-12T14:30:37Z |
| publishDate | 2022-06-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Bioengineering and Biotechnology |
| spelling | doaj.art-90b07999bdd145fb8c6b844c7a3a3dee2022-12-22T03:29:18ZengFrontiers Media S.A.Frontiers in Bioengineering and Biotechnology2296-41852022-06-011010.3389/fbioe.2022.905466905466Methane Emission Reduction and Biological Characteristics of Landfill Cover Soil Amended With Hydrophobic BiocharYongli Qin0Yongli Qin1Yongli Qin2Beidou Xi3Beidou Xi4Xiaojie Sun5Xiaojie Sun6Hongxia Zhang7Hongxia Zhang8Chennan Xue9Chennan Xue10Beibei Wu11Beibei Wu12Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, ChinaSchool of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin, ChinaGuangxi Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, Guilin University of Technology, Guilin, ChinaGuangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, ChinaState Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing, ChinaGuangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, ChinaGuangxi Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, Guilin University of Technology, Guilin, ChinaGuangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, ChinaGuangxi Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, Guilin University of Technology, Guilin, ChinaGuangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, ChinaGuangxi Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, Guilin University of Technology, Guilin, ChinaGuangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, ChinaGuangxi Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, Guilin University of Technology, Guilin, ChinaBiochar-amended landfill cover soil (BLCS) can promote CH4 and O2 diffusion, but it increases rainwater entry in the rainy season, which is not conducive to CH4 emission reduction. Hydrophobic biochar–amended landfill cover soil (HLCS) was prepared to investigate the changes in CH4 emission reduction and biological characteristics, and BLCS was prepared as control. Results showed that rainwater retention time in HLCS was reduced by half. HLCS had a higher CH4 reduction potential, achieving 100% CH4 removal at 25% CH4 content of landfill gas, and its main contributors to CH4 reduction were found to be at depths of 10–30 cm (upper layer) and 50–60 cm (lower layer). The relative abundances of methane-oxidizing bacteria (MOB) in the upper and lower layers of HLCS were 55.93% and 46.93%, respectively, higher than those of BLCS (50.80% and 31.40%, respectively). Hydrophobic biochar amended to the landfill cover soil can realize waterproofing, ventilation, MOB growth promotion, and efficient CH4 reduction.https://www.frontiersin.org/articles/10.3389/fbioe.2022.905466/fulllandfill coverbiocharhydrophobicmethane emission reductionbiological characteristics |
| spellingShingle | Yongli Qin Yongli Qin Yongli Qin Beidou Xi Beidou Xi Xiaojie Sun Xiaojie Sun Hongxia Zhang Hongxia Zhang Chennan Xue Chennan Xue Beibei Wu Beibei Wu Methane Emission Reduction and Biological Characteristics of Landfill Cover Soil Amended With Hydrophobic Biochar Frontiers in Bioengineering and Biotechnology landfill cover biochar hydrophobic methane emission reduction biological characteristics |
| title | Methane Emission Reduction and Biological Characteristics of Landfill Cover Soil Amended With Hydrophobic Biochar |
| title_full | Methane Emission Reduction and Biological Characteristics of Landfill Cover Soil Amended With Hydrophobic Biochar |
| title_fullStr | Methane Emission Reduction and Biological Characteristics of Landfill Cover Soil Amended With Hydrophobic Biochar |
| title_full_unstemmed | Methane Emission Reduction and Biological Characteristics of Landfill Cover Soil Amended With Hydrophobic Biochar |
| title_short | Methane Emission Reduction and Biological Characteristics of Landfill Cover Soil Amended With Hydrophobic Biochar |
| title_sort | methane emission reduction and biological characteristics of landfill cover soil amended with hydrophobic biochar |
| topic | landfill cover biochar hydrophobic methane emission reduction biological characteristics |
| url | https://www.frontiersin.org/articles/10.3389/fbioe.2022.905466/full |
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