AI Article Synopsis
- The study examines how different extraction times (6, 12, and 24 hours) affect the composition and quality of compost tea derived from pig manure compost.
- Results showed that shorter extraction times (6 and 12 hours) led to higher protein content and humic-like substances, while the 12-hour extraction produced the highest aromaticity and molecular weight.
- The findings suggest that shorter extraction times (6 and 12 hours) are preferable for producing compost tea with better quality and stronger copper binding capacity.
Article Abstract
Dissolved organic matter extracted from compost tea, can be regarded as alternatives to inorganic fertilizers as well to be used as a washing agent for heavy metal polluted soil. However, the composition and quality of compost tea produced under different extraction time are still unknown. The objective of the current study was set to explore the influence of different extraction time (i.e., 6, 12, and 24 h) on the composition, quality, and copper binding capacity of compost tea originated from pig manure compost. The results indicated that the extraction time obviously influenced the phenolic, aromatic carboxylic, and polycyclic aromatic groups of compost tea. In addition, the compost tea undergo the shorter extraction time (i.e., 6 and 12 h) contained more protein and humic-like compositions. Among the all treatments tested herein, the compost tea produced from 12 h extraction time obviously exhibited higher aromaticity, molecular weight, and humification degree than other two treatments. The highest stability constant value (log K) was observed for the shortest extraction time, i.e., 6.08. According to the quality measures and copper binding capability, shorter extraction times (i.e., 6 and 12 h) would be suggested for compost tea production from pig manure compost.
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| http://dx.doi.org/10.1016/j.ecoenv.2020.111545 | DOI Listing |
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