植物衍生尿素酶诱导的碳酸沉用于凝固石灰尘:制备,性能和机制
Han Tao1, Yuanfu Zhou2, Jianhui Deng3
1School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China.
International journal of biological macromolecules
|April 4, 2025
概括
酶诱导碳酸盐沉 (EICP) 为石灰尘污染提供了一种可持续的解决方案,利用植物衍生尿素酶进行有效的粉尘抑制. 这种环保技术比传统方法具有显著的成本和环境效益.
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:
- 露天矿山的尘埃污染对生态系统和人类健康产生影响.
- 传统的除尘方法在环保性和成本效益方面存在局限性.
- 酶诱导碳酸盐沉 (EICP) 提供了一种使用植物衍生尿素酶的新型生物方法.
研究的目的:
- 评估使用不同源 (CaCl2,Ca(NO3) 2,Ca(CH3COO) 制备的生物防尘剂的固化性能2).
- 将EICP技术的除尘效率,环境影响和成本效益与传统方法进行比较.
- 分析沉碳酸的矿物质成分和结构稳定性.
主要方法:
- 使用植物衍生尿素酶和各种来源制备生物防尘剂.
- 宏观和微观分析以评估凝固性能.
- 在不同风速下测量除尘效率.
- 评价pH值,反应性,腐蚀性和成本效益.
主要成果:
- 所有EICP抑制剂都保持了轻微性的pH值.
- 酸 (Ca(NO3) 2) 的反应性和除尘效率最高 (高达94.28%).
- 矿化产品主要是石 (CaCO3),增强了结构稳定性.
- EICP技术显著降低了成本 (42.30-50.80%与水相比,3.30-12.40%与化学抑制剂相比).
- 乙酸 (Ca(CH3COO) 2) 的腐蚀性是最低的 (0.020 mm/a).
结论:
- EICP技术是一种高效,环保且具有成本效益的方法,可以缓解石灰尘污染.
- 植物源尿酶诱导的CaCO3沉为传统防尘提供了一个可持续的替代方案.
- 来源的选择影响抑制剂的性能,Ca (NO3) 2和Ca (CH3COO) 2显示出特别有前途的效率和低腐蚀性.
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