自然有机物对来自各种原料的生物炭合物的聚合动态的影响
Qirui Li1, Hongyu Si2, Xiuxiu Chen2
1College of Land Science and Technology, China Agricultural University, Key Laboratory of Arable Land Conservation in North China, Ministry of Agriculture and Rural Affairs, Beijing 100193, PR China.
The Science of the total environment
|June 22, 2024
概括
生物炭合物 (BCs) 的稳定性因原料和有机物质而异. 牛血清白蛋白 (BSA) 与酸 (HA) 相比,提供了比生物炭更好的体稳定性,突出了有机物质类型的重要性.
科学领域:
- 环境科学 环境科学
- 体科学 体科学 体科学
- 材料科学 材料科学 材料科学
背景情况:
- 生物炭合物 (BCs) 很丰富,由多种不同的原料生产.
- BC聚合受原料类型和天然有机物质的影响,但这种相互作用的理解很少.
- 了解BC体稳定性对于评估它们在水生系统中的行为和风险至关重要.
研究的目的:
- 研究天然有机物对来自各种原料的生物炭合物 (BCs) 的合稳定性的影响.
- 为了比较酸 (HA) 和牛血清白蛋白 (BSA) 在稳定BCs中的有效性.
- 确定生物炭的物理化学特性及其体稳定性之间的关系.
主要方法:
- 从污水污泥 (SS),大米 (RH),油菜草颗粒 (OSR),小麦草颗粒 (WS),杂草草颗粒 (MS) 和软木颗粒 (SW) 生产了六种生物炭.
- 通过在酸 (HA) 存在下确定临界凝血度 (CCCs) 来评估体稳定性.
- 使用NaCl测量聚合速率常数 (k),并评估牛血清白蛋白 (BSA) 对BC稳定性的影响.
主要成果:
- 有HA的CCC的顺序是RH < MS < SS < WS < OSR < SW,与特定表面积正相关,与灰含量负相关.
- 与HA相比,牛血清白蛋白 (BSA) 显示出较强的BC聚合抑制,这归因于硬质障碍.
- BSA形成了蛋白质冠状体,显著增强了BC的体稳定性,特别是在MS衍生的BC中,独立于散装生物炭特性.
结论:
- 原料类型和天然有机物质显著影响生物炭合物 (BC) 聚合和稳定性.
- 牛血清白蛋白 (BSA) 是比酸 (HA) 更有效的生物炭合物稳定剂.
- 研究结果强调,在评估水生环境中的BC行为和环境风险时,需要考虑原料和有机物质类型.
关键词:
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