Effect of MnO2-biochar composites on promoting humification during chicken manure composting
Abstract The present study aimed to accelerate the humification and to investigate how MnO2 modification of biochar (MBC) drives the humus formation during composting with chicken manure. In this study, compared with the control group (CK), the addition of MBC caused an increase in the concentration...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Springer
2024-03-01
|
| Series: | Biochar |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/s42773-024-00315-4 |
| _version_ | 1827300980721451008 |
|---|---|
| author | Haishi Qi Wenfang Gao Lina Xie Guogang Zhang Caihong Song Zimin Wei Ning Hu Tong Li |
| author_facet | Haishi Qi Wenfang Gao Lina Xie Guogang Zhang Caihong Song Zimin Wei Ning Hu Tong Li |
| author_sort | Haishi Qi |
| collection | DOAJ |
| description | Abstract The present study aimed to accelerate the humification and to investigate how MnO2 modification of biochar (MBC) drives the humus formation during composting with chicken manure. In this study, compared with the control group (CK), the addition of MBC caused an increase in the concentration of both humus and humic acid (HA), with a respective enhancement of 29.1% and 37.2%. In addition, MBC also improved the stability of compost products. Hetero two-dimensional correlation spectra further exhibited that the MBC could alter the formation mechanism of humus fractions during composting. Random forest analysis showed that Microbacterium, Bacteroides, Kroppenstedtia, Gracilibacillus, and Lentibacillus were significantly related to humus formation (P < 0.05). MBC enhanced the absolute abundance of these five genera during composting. The structural equation model further confirmed that these five genera could be indirectly involved in humus formation, through the production of aromatic compounds via secondary metabolism. Additionally, these five genera could directly transform organic components into macromolecular humus structures. Therefore, the increase in these five genera might be a direct response to the acceleration of the humification during MBC composting. These findings demonstrate the potential value of MBC in harmless disposal of hazardous biowastes through composting. Highlights MnO2 modification of biochar changed the formation mechanism of humus fractions. Key genera involved in humus formation were identified. Among of MnO2 modification of biochar, key genera and humus formation were revealed. Graphical Abstract |
| first_indexed | 2024-04-24T16:15:17Z |
| format | Article |
| id | doaj.art-3e4072c07d574d08bc5333c71e6af6ce |
| institution | Directory Open Access Journal |
| issn | 2524-7867 |
| language | English |
| last_indexed | 2024-04-24T16:15:17Z |
| publishDate | 2024-03-01 |
| publisher | Springer |
| record_format | Article |
| series | Biochar |
| spelling | doaj.art-3e4072c07d574d08bc5333c71e6af6ce2024-03-31T11:28:03ZengSpringerBiochar2524-78672024-03-016111110.1007/s42773-024-00315-4Effect of MnO2-biochar composites on promoting humification during chicken manure compostingHaishi Qi0Wenfang Gao1Lina Xie2Guogang Zhang3Caihong Song4Zimin Wei5Ning Hu6Tong Li7School of Life Sciences, Liaoning UniversityTianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal UniversityTianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal UniversityTianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal UniversityCollege of Life Science, Liaocheng UniversityTianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal UniversitySchool of Food and Biological Engineering, Hezhou UniversitySchool of Life Sciences, Liaoning UniversityAbstract The present study aimed to accelerate the humification and to investigate how MnO2 modification of biochar (MBC) drives the humus formation during composting with chicken manure. In this study, compared with the control group (CK), the addition of MBC caused an increase in the concentration of both humus and humic acid (HA), with a respective enhancement of 29.1% and 37.2%. In addition, MBC also improved the stability of compost products. Hetero two-dimensional correlation spectra further exhibited that the MBC could alter the formation mechanism of humus fractions during composting. Random forest analysis showed that Microbacterium, Bacteroides, Kroppenstedtia, Gracilibacillus, and Lentibacillus were significantly related to humus formation (P < 0.05). MBC enhanced the absolute abundance of these five genera during composting. The structural equation model further confirmed that these five genera could be indirectly involved in humus formation, through the production of aromatic compounds via secondary metabolism. Additionally, these five genera could directly transform organic components into macromolecular humus structures. Therefore, the increase in these five genera might be a direct response to the acceleration of the humification during MBC composting. These findings demonstrate the potential value of MBC in harmless disposal of hazardous biowastes through composting. Highlights MnO2 modification of biochar changed the formation mechanism of humus fractions. Key genera involved in humus formation were identified. Among of MnO2 modification of biochar, key genera and humus formation were revealed. Graphical Abstracthttps://doi.org/10.1007/s42773-024-00315-4CompostingMnO2-biocharHumusKey microbes |
| spellingShingle | Haishi Qi Wenfang Gao Lina Xie Guogang Zhang Caihong Song Zimin Wei Ning Hu Tong Li Effect of MnO2-biochar composites on promoting humification during chicken manure composting Biochar Composting MnO2-biochar Humus Key microbes |
| title | Effect of MnO2-biochar composites on promoting humification during chicken manure composting |
| title_full | Effect of MnO2-biochar composites on promoting humification during chicken manure composting |
| title_fullStr | Effect of MnO2-biochar composites on promoting humification during chicken manure composting |
| title_full_unstemmed | Effect of MnO2-biochar composites on promoting humification during chicken manure composting |
| title_short | Effect of MnO2-biochar composites on promoting humification during chicken manure composting |
| title_sort | effect of mno2 biochar composites on promoting humification during chicken manure composting |
| topic | Composting MnO2-biochar Humus Key microbes |
| url | https://doi.org/10.1007/s42773-024-00315-4 |
| work_keys_str_mv | AT haishiqi effectofmno2biocharcompositesonpromotinghumificationduringchickenmanurecomposting AT wenfanggao effectofmno2biocharcompositesonpromotinghumificationduringchickenmanurecomposting AT linaxie effectofmno2biocharcompositesonpromotinghumificationduringchickenmanurecomposting AT guogangzhang effectofmno2biocharcompositesonpromotinghumificationduringchickenmanurecomposting AT caihongsong effectofmno2biocharcompositesonpromotinghumificationduringchickenmanurecomposting AT ziminwei effectofmno2biocharcompositesonpromotinghumificationduringchickenmanurecomposting AT ninghu effectofmno2biocharcompositesonpromotinghumificationduringchickenmanurecomposting AT tongli effectofmno2biocharcompositesonpromotinghumificationduringchickenmanurecomposting |