斯特鲁维特驱动的整合用于从肥消化剂中增强营养回收
Seyyed Ebrahim Mousavi1,2, Bernard Goyette1, Xin Zhao2
1Sherbrooke Research and Development Center, Agriculture and Agri-Food Canada, 2000 College Street, Sherbrooke, QC J1M 0C8, Canada.
Bioengineering (Basel, Switzerland)
|February 23, 2024
概括
这项研究结合了无氧消化和斯特鲁维特沉,以有效地从肥中恢复营养. 综合方法成功地去除了氨和重金属,为可持续农业铺平了道路.
科学领域:
- 环境科学 环境科学
- 农业工程 农业工程
- 化学工程是化学工程的重要组成部分.
背景情况:
- 家禽养殖产生大量的便,这给环境带来了挑战.
- 从CM中恢复营养素对于可持续农业和循环经济原则至关重要.
- 无氧消化 (AD) 和 struvite 沉是营养管理的有希望的清洁技术.
研究的目的:
- 研究AD和 struvite沉的协同整合,以提高CM的营养回收.
- 为了评估不同样本类型 (消化剂,过消化剂,合成控制) 的营养回收效率.
- 评估综合工艺对重金属减少和微生物群落组成的影响.
主要方法:
- 批量实验使用原始消化剂 (RS),过消化剂 (FS) 和合成控制样本 (CS) 进行.
- 通过调整pH值以确定氨去除和回收效率,优化了斯特鲁维特沉.
- 分析了消化剂中的重金属度和微生物社区组成.
主要成果:
- 综合工艺证明了强大的氨去除和高回收,FS在pH11下达到88%的氨去除.
- 原样 (RS) 在pH10 (86.3%) 时显示了最高的回收率,表明了工艺的适应性.
- 观察到重金属 (Zn,Cu,Pb,Ni,Cd,Cr,Fe) 的显著减少以及微生物群落结构的改善.
结论:
- AD和 struvite 沉的协同整合是从肥中恢复营养和重金属的有效策略.
- 该过程为管理家禽养殖废物提供了可持续的解决方案,有利于农业和循环经济.
- 建议进一步研究经济可行性和可扩展性,以便广泛采用.
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