添加化学氧化催化剂加快了厨房废物的生物干燥增强堆肥过程中的加热和化
Chenxuan Fang1, Jiefei Mo1, Yuzhou Long1
1Institute of Environment Pollution Control and Treatment, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety Technology, Zhejiang 310058, China.
Bioresource technology
|October 16, 2025
概括
将催化剂添加到生物干燥增强堆肥中,通过促进活性氧物种 (ROS) 和微生物活动,加速厨房垃圾的分解. 这提高了堆肥的质量和安全性,提供了更快,更稳定的堆肥解决方案.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 生物干燥增强堆肥 (BEC) 快速堆肥厨房垃圾,但与破坏微生物群落的高含水量作斗争.
- 将BEC与化学催化氧化相结合,旨在克服热友相启动和稳定的局限性.
研究的目的:
- 研究Mn/Ce双金属催化剂在增强生物干燥增强堆肥过程中的有效性.
- 评估催化剂辅助化学氧化对微生物群落,降解率和堆肥质量的影响.
主要方法:
- 实验室规模的生物干燥增强堆肥实验采用三个处理方法进行:催化剂添加 (CT),焦化物添加 (SP) 和控制 (CK).
- 分析了活性氧物种 (ROS) 含量,脂质和蛋白质降解,温度概况,微生物群体组成,基因表达,酶活性和堆肥质量 (发芽指数,湿酸比率).
- 诱导合等离子体质谱法 (ICP-MS) 用于评估最终堆肥中的金属含量.
主要成果:
- Mn/Ce催化剂显著增加了ROS水平 (21.8-37.4%),并增强了早期的脂质 (97.5%) 和蛋白质 (41.0%) 降解.
- 催化剂处理通过释放比对照剂多60%的热量来加速和延长热友性阶段.
- 这导致了丰富的热友微生物,高调的素降解基因,增加了酶活性 (11.5-61.5%),并改善了素降解 (46.7%).
- 堆肥质量有所改善,由更高的发芽指数 (9.9%) 和和酸比率 (32.5%) 证明.
- 堆肥中的金属含量 (Mn,Ce) 处于安全范围内.
结论:
- 催化剂辅助生物干燥增强堆肥有效地结合了化学氧化和微生物活动,以加速加热和湿化.
- 这种方法为厨房垃圾提供了更快,更稳定,更高质量的堆肥解决方案.
- 该过程在合理的应用下确保土壤对金属污染的安全.
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