基于优化数值模型的基础上,对烯污染土壤的热溶解整治有了新的见解
Shuai Zhang1, Jiating Zhao1, Lizhong Zhu1
1College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou, Zhejiang, 310058, China.
Journal of hazardous materials
|October 7, 2023
概括
优化热溶解 (TD) 以去除多环芳 (PAH) 需要平衡温度和土壤水分等因素. 这项研究开发了一种模型,有效地从受污染的地点去除烯 (PYR),减少能源使用.
科学领域:
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
- 土壤科学 土壤科学
背景情况:
- 多环芳 (PAHs) 构成环境风险,需要有效的补救策略.
- 热溶解 (TD) 是一种可行的PAH补救技术,但效率挑战仍然存在.
- 优化TD参数对于具有成本效益和能效的PAH去除至关重要.
研究的目的:
- 研究温度,时间,水含量和有机物质对通过TD去除烯 (PYR) 的影响.
- 开发一个数值模型,以优化TD参数,以提高PYR吸附率.
- 为了在现实世界受污染的土壤中验证优化的TD方案.
主要方法:
- 进行了一系列的土壤实验,以评估关键因素对PYR溶解的影响.
- 开发并使用数值模型来确定最佳的TD条件.
- 在实际受污染的土壤样本上验证了拟议的优化方案.
主要成果:
- 温度和时间与PYR溶解具有正相关性,而水和有机物则表现出抑制作用.
- 在水和有机物质含量之间观察到协同效应.
- 确定了1.56的最佳土壤-水与有机物比 (Sw/fom) 和173°C的最小温度.
结论:
- 这项研究提供了对不同条件下的PYR溶解行为的机制性见解.
- 开发了一个优化的TD方案,提高了PAH修复的效率和降低了能源消耗.
- 这些发现和建模方法可能适用于其他PAH,有助于污染现场的整治.
相关概念视频
Bioremediation
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
Microbial Bioremediation of Hydrocarbons
Bioremediation is an environmentally sustainable process that employs living organisms—primarily microorganisms—to degrade or neutralize pollutants from contaminated environments. In oil spills and hydrocarbon pollution, bioremediation involves the use of hydrocarbon-degrading bacteria to transform toxic compounds into less harmful substances. This approach leverages natural microbial metabolic processes and is considered both cost-effective and ecologically favorable compared to physical or...
Microbial Bioremediation of Pesticides
Pesticides often feature structurally complex chemical architectures, incorporating halogen groups and multiple aromatic rings. These characteristics confer high chemical stability, rendering many pesticides resistant to natural degradation processes. This resistance poses significant environmental concerns, as persistent pesticide residues can accumulate in ecosystems and affect non-target organisms.Despite the inherent stability of many pesticides, certain microorganisms possess the metabolic...


