基于正交试验的鸡粪好氧堆肥过程中雌激素的降解特征和作用机理。

IF 8 2区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES
Ziwei Liang, Junhao Wu, De-Chun He, Yan Li, Yan-Qiu Liang, Jia-Wu Hu, Meng-Yao Zou, Jian-Feng Ning, Wang-Rong Liu
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引用次数: 0

摘要

环境雌激素是当前一个重要的研究课题,而家禽粪便是一个重要的来源。本研究探讨了六种雌激素(E1、17α-E2、17β-E2、E3、17α-EE2 和 DES)在鸡粪好氧堆肥过程中的降解特征和影响机制。在 45 天的时间里,进行了由四个因素(通气率、钙镁磷肥(Ca-Mg-P 肥)、椰壳生物炭、初始含水量)和三个好氧堆肥水平组成的正交试验,以监测雌激素和基本参数的变化。结果表明,影响雌激素降解率的因素依次为:初始含水量(MC)> Ca-Mg-P 肥料>通气率>椰壳生物炭。这些因素极大地影响了雌激素降解菌属的丰度。雌激素降解的最佳堆肥条件是添加 10%的椰壳生物炭,初始含水量保持在 60%,通气速率为 0.08 L min-1∙kg-1DM(干物质),在这些条件下,六种雌激素的平均降解率为 86.88%。在不同处理条件下的堆肥过程中,观察到 5 个已知的雌激素降解菌属具有较高的相对丰度(最大 31.08%),其中最主要的菌属是 17α-E2、17β-E2、E3、17α-EE2 和 DES 的葡萄球菌和布拉希杆菌,以及 E1 的 Pusillimonas。微生物群落结构的组成发生了显著变化,影响这些菌属组成和演替的主要环境因素是碳氮比(C/N)和 MC。研究结果可为鸡粪堆肥过程中有效降解雌激素提供理论依据和实践参考。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Degradation characteristics and effect mechanisms of estrogens during aerobic composting of chicken manure based on the orthogonal test.

Environmental estrogens are currently a significant research topic, and poultry manure serves as a crucial source. This study investigated the degradation characteristics and effect mechanisms of six estrogens (E1, 17α-E2, 17β-E2, E3, 17α-EE2, and DES) during the aerobic composting of chicken manure. An orthogonal test comprising four factors (aeration rate, calcium-magnesium-phosphorus fertilizer (Ca-Mg-P fertilizer), coconut shell biochar, initial moisture content) and three levels of aerobic composting was conducted over a 45-day period to monitor the changes in estrogens and basic parameters. The results indicated that the factors influencing the estrogen degradation rate ranked as: initial moisture content (MC) > Ca-Mg-P fertilizer > aeration rate > coconut shell biochar. These factors significantly influenced the abundance of estrogen-degrading genera. Optimal composting conditions for estrogen degradation were identified as the addition of 10% coconut shell biochar, maintaining an initial moisture content of 60%, and using an aeration rate of 0.08 L min-1∙kg-1DM (dry matter), with an average degradation rate of 86.88% for the six estrogens under these conditions. During the composting process under various treatments, five known estrogen-degrading genera were observed with high relative abundance (max 31.08%), and the predominant genera were Staphylococcus and Brachybacterium for 17α-E2, 17β-E2, E3, 17α-EE2, and DES, and Pusillimonas for E1. The composition of microbial community structure changed significantly, and the dominated environment factors effecting the composition and succession of these genera were carbon to nitrogen ratio (C/N) and MC. The research results can provide both a theoretical basis and practical reference for the effective degradation of estrogens during the composting of chicken manure.

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来源期刊
Journal of Environmental Management
Journal of Environmental Management 环境科学-环境科学
CiteScore
13.70
自引率
5.70%
发文量
2477
审稿时长
84 days
期刊介绍: The Journal of Environmental Management is a journal for the publication of peer reviewed, original research for all aspects of management and the managed use of the environment, both natural and man-made.Critical review articles are also welcome; submission of these is strongly encouraged.
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