无氧消化物的经典批量蒸以分离二碳酸:不需要膜!
Alejandro Moure Abelenda1,2, Jonas Baltrusaitis3
1School of Engineering, Lancaster University, Lancaster LA1 4YW, UK.
Bioengineering (Basel, Switzerland)
|November 27, 2024
概括
反应蒸有效地从厌氧消化物中恢复二碳酸,这是一个有价值的肥料. 这项技术有助于管理排放和提升消化剂的价值,提高无氧消化过程的可持续性.
科学领域:
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
- 农业学是一种农业学.
背景情况:
- 无氧发酵导致过度矿化,增加和碳的可用性.
- 从消化剂中管理氨和二氧化碳排放对于土壤修改储存和应用至关重要.
- 需要下游加工技术来利用消化成分.
研究的目的:
- 研究经典蒸方法,从无氧化消化物中回收氨 (NH4+-N).
- 评估将二碳酸 (NH4HCO3) 作为一种有价值的肥料分离出来的可行性.
- 评估不同类型的消化物反应蒸的效率.
主要方法:
- 应用到食品废弃物消化剂 (FWD) 和农业废弃物消化剂 (AWD) 的反应蒸.
- 使用定位监测过程,以评估消化剂的缓冲容量.
- 研究了温度和持续时间对NH4HCO3回收的影响.
主要成果:
- 从FWD获得NH4HCO3的直接隔离.
- 由于更高的温度和持续时间要求,为了从AWD中回收NH4HCO3,需要添加防泡.
- 在90°C以下的短暂模式运行使得NH4HCO3能够从FWD中分离出来.
- 定位证明是监测消化物枯竭的有效方法.
结论:
- 反应蒸是一种可行的技术,用于从无氧消化物中提升氨的价值.
- 为了高效的NH4HCO3回收,可以针对不同的消化源优化工艺条件.
- 从生物气发动机中整合废热可以提高技术经济可行性.
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