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来自猪的生物炭:营养恢复和缓释受精的替代方案

Larissa Almeida Nascimento¹, André Pereira Rosa¹, Augusto Vilela França²

¹Department of Agricultural Engineering, Federal University of Viçosa, Viçosa, Minas Gerais 36570-900, Brazil.

|March 16, 2026

概括

使用MgCl2激活在800°C的优化猪肥生物炭显著增强了营养回收. 这种生物炭表现出高酸盐和吸附性,证明了可持续农业的有效性.

科学领域:

农业科学农业科学
环境化学环境化学
材料科学材料科学材料科学

背景情况:

猪便 (SM) 是一个重要的废物管理挑战.
从SM中回收营养对可持续农业和减少环境污染至关重要.
生物炭生产提供了一种废弃物价值化和营养分离的方法.

研究的目的:

优化猪肥生物炭的生产,以提高营养的回收.
研究不同激活剂 (KOH,HCl,MgCl2) 和条件对生物炭特性的影响.
为了评估对酸盐和的优化生物炭的吸附能力.

主要方法:

猪被用KOH,HCl或MgCl2激活,比例为1:1和3:1 (v/w).
活性材料在400,600和800°C的温度下进行碳化.
酸盐和的吸附能力是通过异热和运动研究来确定的.

主要成果:

最佳条件涉及MgCl2在800°C的激活与3:1的比率,产生84.9%的生物炭生产.
这种生物炭表现出最高的酸盐 (2.93毫克g-1) 和 (1.27毫克g-1) 吸附.
酸盐吸附遵循兰格穆尔模型 (qm = 67.56 mg g-1),吸附遵循弗洛因德利希模型 (qm = 17.48 mg g-1).
吸附动力学表明两种营养素的化学吸附控制机制.

结论:

在800°C的MgCl2-激活的猪生物炭对营养恢复非常有效.
由于营养物质溶解度有限,生物炭显示出作为缓释肥料的潜力.
优化生物炭生产提高了农业中可持续的营养管理.

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