Dissolved organic carbon, a critical factor to increase the bioavailability of phosphorus during biochar-amended aerobic composting
| 第一作者： |
Cui, Hu |
| 英文第一作者： |
Cui, Hu |
| 联系作者： |
Wang, Lixia |
| 英文联系作者： |
|
| 发表年度： |
2022 |
| 卷： |
113 |
| 摘要： |
Considerable research efforts have been devoted to increase phosphorus (P) availability during aerobic composting. However, there is little discussion weather the dissolved organic carbon (DOC) controls the transformation among P-fractions. Thus, we investigated the changes in DOC compositions and P-fractions during biochar-amended composting (wet weight basis, 5% and 10%). TP content continuously increased since the 'concentration effect' during aerobic composting. NaHCO 3 -Pi, NaOH-Pi and HCl-Pi were main P-fractions, and biochar can improve P-bioavailability by transforming NaOH-Pi and HCl-Pi into NaHCO 3 Pi. Structure equation models (SEMs) indicated that biochar enhanced the P-bioavailability through regulating the decomposition of DOC. Our results at least hint that the activation mechanism on P under the influence of DOC during biochar-amended composting. (c) 2021 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| 刊物名称： |
Journal of Environmental Sciences |
| 参与作者： |
H. Cui, Y. Ou, L. X. Wang, B. X. Yan, Y. X. Li and M. W. Bao |
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