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| Study on the changes of indexes in the aerobic fermentation composting process of different parts of traditional Chinese medicine residues |
| Hits 556 Download times 1072 Received:October 13, 2022 |
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| DOI
10.11656/j.issn.1672-1519.2023.04.20 |
| Key Words
Chinese medicinal herbal residue;aerobic fermentation;biological organic fertilizer;recycling |
| Author Name | Affiliation | E-mail | | XU Kaige | Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China | | | YUAN Hongyu | Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China | | | TENG Mengmeng | Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China | | | LI Tianxiang | Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China | litianxiang612@sina.com |
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| Abstract
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| [Objective] Aerobic fermentation composting was carried out based on the residues of traditional Chinese medicine with different medicinal parts to investigate the change rules and differences of different nutrient contents in the process of composting, so as to provide scientific research data for further improving the fermentation process of aerobic composting of Chinese herbal dregs. [Methods] The residues of Morus alba L., Perilla frutescens(L.) Britt., Mentha haplocalyx Briq. and compound Chinese medicine were used for aerobic composting with compound bacteria, subjected to high-temperature aerobic composting and fermentation, taking temperature, pH, organic matter, nutrients as detection indicator, to explore the change characteristics of physical, chemical and biological indicators. [Results] It was found that the temperature of different composting process was significantly different, the highest fermentation temperature of residues of Perilla frutescens(L.) Britt. could reach 71.47℃. During composting, the pH values of the four kinds of residues showed an increasing trend, and the pH value of the compound residue was the highest. The total nitrogen content of the four kinds of medicinal residue compost increased firstly and then decreased. Total phosphorus content increased respectively. And the total potassium content increased by 18.42%, 36.54%, 64.10% and 97.73%. At the end of composting, the total nutrients reached 5.80%, 6.51%, 6.22% and 5.69%. Organic matter showed a decreasing trend, and the C/N of the four kinds of residues all decreased to less than 20 in the late composting period, and the T value of residues of Perilla frutescens(L.) Britt. and Mentha haplocalyx Briq. was less than 0.7, The seed germination index(GI) was all above 80%. [Conclusion] The physicochemical properties in different kinds of Chinese medicine residues were quite different, and the compost ripening effect was obviously different. The leaf residues were easy to degrade and had a short fermentation period, while the compound residues were rich in nutrients, which was conducive to high-temperature fermentation. Therefore, the aerobic composting of traditional Chinese medicine residues had a promising future. |
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