Research Initiation Award: Enhanced Adsorption of Heavy Metals in Hazardous Waste Incinerator Effluent Through the Addition of Inorganic Particles

在焚烧炉的火焰后气体中，金属蒸汽开始 在温度下降时凝结。 更不稳定的食物 往往集中在较小的颗粒或气溶胶中， 也是最难控制的 的目标 拟议的研究是研究金属的形态 研究焚烧炉流出物中的排放量， 确定是否用无机物控制流的接种 特定尺寸和成分的颗粒可以加速 铅、镉和汞的成核和冷凝， 这些粒子。 颗粒的大小可以 使用现有的污水处理技术去除。 在 在这项实验研究中，含有金属的液体将 烧成灰烬 无机颗粒将被添加到后- 火焰区下游的火焰燃烧气体。 一 部分微粒将被进一步捕获 下游和金属浓度测量使用 原子吸收光谱仪 吸附 每种金属在颗粒上的特性将是 作为颗粒组成的函数， 注入的粒子和负载。 公众和政府对排放的关注日益增加 城市和危险废物中的重金属 焚化炉 金属回收率发现， 一项研究计划可能会指出一个有希望的商业复苏 法

In the post-flame gases of an incinerator metal vapors begin to condense as the temperature drops. The more volatile meals tend to be concentrated in smaller particles or aerosols which can also be the most difficult to control. The objective of the proposed research is to study the morphology of metal emissions in the effluent of a research incinerator and determine if controlled seeding of the flow with inorganic particles of a specific size and composition can accelerate nucleation and condensation of lead, cadmium, and mercury onto these particles. The particles will be of size that can be removed using current effluent treatment technologies. In this experimental study, liquids containing metals will be incinerated. Inorganic particles will be added to the post- flame combustion gases downstream of the flame zone. A portion of the particulates will then be trapped further downstream and the metals concentrations measured using an atomic absorption spectrometer. The adsorption characteristics of each metal onto the particulates will be determined as a function of the particle composition, the size of the injected particles, and the loading. Public and governmental concern is increasing over emissions of heavy metals from municipal and hazardous waste incinerators. The rates of metal recovery found in this research program may point to a promising commercial recovery technique.