评估石堆肥的质量和有益用途
Afeefa A Abdool-Ghany1, Clément G L Pollier2, Amanda M Oehlert2
1Department of Chemical, Environmental, and Materials Engineering, College of Engineering, University of Miami, Coral Gables, FL, USA.
Waste management (New York, N.Y.)
|October 8, 2023
概括
堆肥沙上的藻是一种可行的管理策略. 由此产生的堆肥,尽管有一些营养不平衡,成功地支持了植物生长,并符合大多数监管指南.
科学领域:
- 海洋生物学 海洋生物学
- 环境科学环境科学
- 农业学是一种农业学.
背景情况:
- 创纪录数量的萨加索海藻洪水影响佛罗里达州和加勒比海沿岸.
- 目前的处置方法涉及垃圾填埋,这代表了潜在的可再生资源的损失.
研究的目的:
- 评估堆肥藻作为替代管理策略的可行性.
- 根据已建立的指导方针,评估石堆肥的特性.
主要方法:
- 在小规模和大规模进行了堆肥实验.
- 测量的主要参数包括物理化学性质,营养比 (C:N),元素组成,细菌水平和植物生长 (卜).
- 结果与11条监管指南进行了比较,包括美国堆肥委员会 (USCC) 的指南.
主要成果:
- 石灰堆肥使卜持续生长,这表明它有可能用于农业用途.
- 微金属度通常符合监管标准, (As) 是一个明显的例外,超过了住宅土壤清洁水平.
- 大规模堆肥中的细菌水平符合指导方针,但小规模实验没有.
结论:
- 堆肥Sargassum海藻是填埋垃圾的一个有希望的替代方案.
- 石灰堆肥显示了在填充应用和某些农业环境中有益的重复使用的潜力.
- 为了更广泛的农业应用,可能需要进一步的研究来解决特定的营养不平衡和含量.
相关概念视频
01:19Quality of Water
108
In concrete preparation, the quality of water is paramount as it affects the strength and durability of the concrete. Potable water is usually preferred; however, it must not have excessive sodium or potassium to prevent compromising the concrete's integrity. Water quality is typically evaluated based on impurities such as dissolved solids, chlorides, and sulfates, and its pH value is ideally between 6 and 8. Even slightly acidic natural water may be acceptable unless it contains harmful...
108
01:25Deleterious Substances in Aggregate
179
Deleterious substances in aggregates can be detrimental to the quality and durability of concrete. These substances include organic impurities like loam, which interfere with cement hydration and are usually present in the sand. These prevent a good bond between aggregate and cement paste. Organic impurities can be detected using the colorimetric test, where the darkness of a solution after agitation indicates the level of organic content.
Another type of impurity is clay and fine material that...
Another type of impurity is clay and fine material that...
179