农业废物衍生生物炭基化肥,用于缓释应用
Karthikeyan Ramesh1, Vimala Raghavan2
1School of Biosciences and Technology, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India.
ACS omega
|February 5, 2024
概括
这项研究开发了一种缓释化肥,使用香叶盖生物炭. 这种可持续的肥料提高了营养使用效率,并减少了传统肥料造成的环境污染.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
背景情况:
- 全球人口的增加需要通过现代农业技术增加粮食生产.
- 传统的化肥虽然可以提高作物产量,但由于挥发和浸出,其营养利用效率较低 (20-30%).
- 化肥造成的环境污染是全球关注的一个重大问题.
研究的目的:
- 开发一种可持续的,释放缓慢的化肥,使用来自香叶 (BLS) 的生物炭.
- 评估开发的生物炭基肥料的物理化学特性和营养释放特征.
- 评估生物炭在减少营养损失和改善植物营养吸收方面的潜力.
主要方法:
- 香叶 (BLS) 在500°C下在3小时内被烧解以产生生物炭.
- 含有营养的BLS (NBLS) 生物炭被准备用于缓释化肥的应用.
- 使用FT-IR,XRD,TGA,SEM和BET方法对BLS和NBLS生物炭进行表征.
- 评估水的吸收率,保留率,膨胀率和平衡水含量.
- 营养释放的研究进行了16个小时.
主要成果:
- BLS和NBLS生物炭表现出优异的吸水,保留,膨胀率和平衡水含量.
- 鉴定证实了生物炭的多孔结构,稳定性和功能组,NBLS的峰值为1423 cm-1表示NH4+负载.
- BET分析显示,BLS的特定表面积为43.216米/g,NBLS的特定表面积为35.014米/g.
- 营养释放研究表明,释放在16小时内逐渐增加.
- 准备好的肥料具有较低的盐指数值,表明更清洁,更可持续的选择.
结论:
- 开发的BLS生物炭基肥料有效地作为缓释源起作用.
- 与传统肥料相比,生物炭的特性增强了土壤的保留水,并减少了营养物质的出.
- 这种可持续肥料具有显著的潜力,可以提高农业生产率,同时减轻环境污染.
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