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通过将循环转化为酸盐-N肥料来电解HTL-AP以回收营养物质
Barbara Camila Bogarin Cantero1, Yuanhui Zhang1, Paul C Davidson1
1Department of Agricultural and Biological Engineering, University of Illinois at Urbana Champaign, Urbana, IL, 61801, USA.
Environmental pollution (Barking, Essex : 1987)
|October 7, 2024
概括
电解有效地将水热液化水相 (HTL-AP) 中的化合物转化为植物可用的酸盐-N. 这一过程提高了食品废物中的营养回收,即使在储存两年后,也提高了水培生菜的生产潜力.
科学领域:
- 生物技术是生物技术.
- 环境科学 环境科学
- 农业科学 农业科学
背景情况:
- 水热液化水相 (HTL-AP) 给水培系统带来营养不平衡.
- HTL-AP中的循环化合物可以阻碍营养的可用性,影响植物生长.
- 以前的研究表明电解可以增加酸盐-N在藻类HTL-AP.
研究的目的:
- 通过电解研究食品废弃物衍生的HTL-AP中化合物的转化为植物喜欢的形式.
- 评估电解对HTL-AP中的营养含量和有机物减少的影响.
- 评估经过处理的HTL-AP的稳定性及其在两年储存后的无机回收.
主要方法:
- 在不同的电流密度下,从食品废物中提取的HTL-AP的电解.
- 在处理和储存之前和之后评估HTL-AP的生物化学性质.
- 水质表征以确定有机物和无机含量.
主要成果:
- 电解成功地将异环胺转化为无机形式 (酸盐-N,酸盐-N,氨酸-N).
- 在最低电流密度下,从最初的25 mg/L达到609 mg/L的酸盐-N的积累.
- 电解使化学氧气需求 (COD) 减少了48%-61%,并且在储存两年后有机物减少了,尽管无机的回收减少了.
结论:
- 电解是一种可行的方法,用于提高HTL-AP中无机的度,用于农业应用.
- 该处理提高了利用HTL-AP作为水培养中的营养来源的潜力.
- 长期储存会影响有机物和的回收,但电解仍然有利于营养增强.
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