这项研究的目的是找到一种经济有效的修正案,以提高堆肥性能和产品质量,以及分析堆肥整个阶段的微生物群落演替。因此,研究了可重复使用的改良剂竹球对餐厨垃圾堆肥过程中堆肥性能和微生物群落演替的影响。结果表明,6%的竹球处理具有最高的聚合度(3.7)和腐殖化指数(0.18)。与对照相比,6%竹球改良剂增加总氮(TN),磷(TP)和钾(TK)含量增加13.61%,19%和17.42%,分别。此外,竹球通过增强耐热性和木质纤维素分解细菌和真菌的相对丰度来增强细菌-真菌多样性并改善微生物群落组成。竹球堆肥中最丰富的五个属为芽孢杆菌(0-71.47%),叶绿体-norank(0-47.17%),Pusillimonas(0-33.24%),不动杆菌(0-27.98%)和未分类的鞘杆菌科(0-22.62%)。线性判别分析效应大小表明,Firmicutes,热刺科和放线菌,它们与可溶性有机物和木质纤维素的分解有关,在竹球处理中显著富集。典型对应分析表明,总有机碳(TOC),TK,TP和TP是两个堆肥系统中微生物群落演替最重要的环境因子。这些结果共同表明,竹球作为可重复使用的修正案可以缩短成熟期,提高腐化程度,提高了餐厨垃圾堆肥过程中的养分含量,促进了微生物群落的演替。研究结果为提高餐厨垃圾堆肥效率提供了理论依据。
The purpose of this study was to find an economical and effective amendment for improving composting performance and product quality, as well as to analyze the microbial community succession in the whole phase of composting. Therefore, the effect of reusable amendment bamboo sphere on composting performance and microbial community succession during food waste composting was investigated. The results showed that 6% bamboo sphere treatment had the highest degree of polymerization (3.7) and humification index (0.18). Compared with control, 6% bamboo sphere amendment increased total nitrogen (TN), phosphorus (TP) and potassium (TK) contents by 13.61%, 19% and 17.42%, respectively. Furthermore, bamboo sphere enhanced bacterial-fungal diversity and improved microbial community composition by enhancing the relative abundance of thermo-tolerance and lignocellulolytic bacteria and fungi. The five most abundant genera in bamboo sphere composting comprised Bacillus (0-71.47%), Chloroplast-norank (0-47.17%), Pusillimonas (0-33.24%), Acinetobacter (0-27.98%) and unclassified Sphingobacteriaceae (0-22.62%). Linear discriminant analysis effect size showed that Firmicutes, Thermoascaceae and Actinobacteriota, which have a relationship with the decomposition of soluble organic matter and lignocellulose, were significantly enriched in bamboo sphere treatment. Canonical correspondence analysis illustrated that total organic carbon (TOC), TK, and TP were the most important environmental factors on microbial community succession in the two composting systems. Together these results suggest that bamboo sphere as a reusable amendment can shorten maturity period, improve humification degree, increase the contents of nutrient and contribute to the succession of microbial community during food waste composting. These findings provide a theoretical basis for improving the efficiency of food waste composting.