College of Life Science, Northeast Agricultural University, Harbin 150030, China.
Heilongjiang Province Intellectual Property Protection Center, Harbin 150030, China.
Waste Manag. 2022 Jul 15;149:146-155. doi: 10.1016/j.wasman.2022.06.014. Epub 2022 Jun 18.
In this present study, catechol was added to promote humus formation in chicken manure composting using 12.5-L working volume lab-scale reactors. Chicken manure composting were carried out on two treatments, control (CK) and 0.5% (w/w) catechol treated group. Results showed that catechol addition reduced organic matter loss and improved the content of recalcitrant components. Humus and humic acid (HA) contents were, respectively, 69.2% and 82.3% higher in catechol treated-compost than in the control. With the addition of catechol, the bacterial community composition and richness was changed, e.g., the relative percentage of Bacillus and Sinibacillus were increased, which might contribute to humus and HA formation. Additionally, the activities of polyphenol oxidase and laccase (related to humus formation) were increased by the addition of catechol. Importantly, the catechol addition reduced the polyphenol content by 39.6% compared to control. Overall, the addition of catechol enhanced the biotic and abiotic factors to promote the humification process during composting, which might be a promising approach for accelerating the humification process and reducing contamination of phenolic compounds.
在本研究中，通过在 12.5-L 工作体积的实验室规模反应器中添加儿茶酚来促进鸡粪堆肥中腐殖质的形成。鸡粪堆肥进行了两种处理，对照（CK）和 0.5%（w/w）儿茶酚处理组。结果表明，儿茶酚的添加减少了有机质的损失，提高了难分解成分的含量。儿茶酚处理组堆肥中的腐殖质和腐殖酸（HA）含量分别比对照组高 69.2%和 82.3%。儿茶酚的添加改变了细菌群落的组成和丰富度，例如芽孢杆菌和辛辛那芽孢杆菌的相对百分比增加，这可能有助于腐殖质和 HA 的形成。此外，儿茶酚的添加增加了多酚氧化酶和漆酶的活性（与腐殖质形成有关）。重要的是，儿茶酚的添加使多酚含量比对照组降低了 39.6%。总的来说，儿茶酚的添加增强了生物和非生物因素，从而促进了堆肥过程中的腐殖化过程，这可能是一种加速腐殖化过程和减少酚类化合物污染的有前途的方法。
