来自生物废物的共同热解量身定制的生物炭:氨吸附的协同作用场所
Mingda Hua1, Yang Cao2, Meilan Zhang3
1Shanghai Technical Service Platform for Pollution Control and Resource Utilization of Organic Wastes, Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Department of Environmental Science and Engineering, Fudan University, Shangchai, 200438, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China.
Journal of environmental management
|March 14, 2026
概括
这项研究从食物和木材废弃物中制造出先进的生物炭,以去除氨 (NH3). 优化的生物炭实现了高吸附能力,为空气污染控制提供了可持续的解决方案.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 氨 (NH3) 是一种具有重大环境和健康影响的危险空气污染物.
- 有效的氨去除方法对于减轻污染至关重要.
- 来自废物材料的生物炭为污染物吸附提供了一个有前途的途径.
研究的目的:
- 从食品废弃物消化剂 (FWD) 和木材废弃物 (WW) 合成多功能生物炭,以吸附氨.
- 为了研究共热解生物炭的物理化学特性及其对NH3吸附的影响.
- 优化生物炭生产和表面修改,以提高氨的捕获.
主要方法:
- 在优化的条件下,FWD和WW的联合热解产生生物炭.
- 生物炭性质的表征,包括多孔性和表面积 (高达331 m2/g).
- 热重力测量质谱和光谱分析用于跟踪结构转变.
- 用酸洗进行表面修饰以增强活性部位.
- 使用Langmuir和Freundlich模型进行吸附研究,以评估NH3的吸附能力 (高达124.2 mg/g).
主要成果:
- 实现了可调节的生物炭产量 (25.8-67.9%重量%) 和增强的多孔性.
- 酸洗有效地去除了金属盐,增加了活性位点.
- 经过修改的生物炭在25°C时表现出最高NH3吸附能力124.2 mg/g.
- 吸附之后是物理吸附,在布伦斯特德和易斯酸位点的化学吸附增强了吸附.
结论:
- FWD和WW的联合热解是一种有效的废物到吸附剂的策略,用于生产高性能生物炭.
- 通过酸性洗进行表面修饰可以显著提高NH3吸附能力.
- 开发的生物炭为减轻氨污染提供了可持续和高效的解决方案.
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