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Formation of dioxins and furans in waste incineration residues from structurally formatting PAH precursor molecules

结构格式化 PAH 前体分子在废物焚烧残留物中形成二恶英和呋喃

基本信息

批准号：
EP/D035988/1
负责人：
Paul Williams
金额：
$ 31.2万
依托单位：
University of Leeds
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2006
资助国家：
英国
起止时间：
2006 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FD035988%2F1
关键词：
Formation dioxins furans waste incineration

项目摘要

The issue of dioxins (PCDD- polychlorinated dibenzodioxins) and furans (PCDF- polychlorinated dibenzofurans) in the environment are of considerable public concern. Their association with emissions from municipal solid waste incineration contributing significantly to the debate surrounding the public acceptability of the technology. We have spent several years investigating the reactions of PCDD/PCDF on flyash in waste incinerators. It is clear that PCDD/PCDF are formed on flyash by reactions of precursor compounds or by de novo synthesis involving carbon. The formation of PCDD/PCDF is an extremely complex mechanism, requiring further research. The aim of this present research proposal is to investigate a range of polycyclic aromatic hydrocarbons (PAH) and oxygenated PAH to determine the influence of the chemical structure of those compounds as potential 'precursor' molecules for the formation of PCDD/PCDF in flyash. This data is important in understanding the formation mechanisms of PCDD/PCDF and hence is key to the development of step change control strategies for the elimination or reduction of PCDD/PCDF formation in flyash and air pollution control residues.

环境中的二恶英（PCDD-多氯二苯并二恶英）和呋喃（PCDF-多氯二苯并呋喃）问题引起了公众的极大关注。它们与城市固体废物焚烧产生的排放物之间的联系大大促进了围绕公众对该技术的可接受性的辩论。我们花了几年时间研究PCDD/PCDF在垃圾焚烧炉飞灰上的反应。显然，多氯二苯并对二恶英/多氯二苯并呋喃是通过前体化合物的反应或通过涉及碳的从头合成在飞灰上形成的。多氯二苯并对二恶英/多氯二苯并呋喃的形成是一个极其复杂的机制，需要进一步研究。本研究建议的目的是调查一系列的多环芳烃（PAH）和含氧多环芳烃，以确定这些化合物的化学结构的影响，作为潜在的“前体”分子的多氯二苯并对二恶英/多氯二苯并呋喃在飞灰中的形成。这些数据对于了解多氯二苯并对二恶英/多氯二苯并呋喃的形成机制十分重要，因此对于制定消除或减少飞灰和空气污染控制残留物中多氯二苯并对二恶英/多氯二苯并呋喃形成的阶跃变化控制战略至关重要。