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Mercury Vapor Sensor for Alumina Refinery Processes

机译：用于氧化铝炼油工艺的汞蒸气传感器

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The sustainability of bauxite mining and refinery practices is reliant on attempts to reduce the environmental impacts of traditional processes. Mercury reduction targets set by industry and regulators has spurred attempts to develop technologies for evaluating the efficiency of mercury removal processes. The development of a mercury sensor suited to alumina refineries will be a significant breakthrough in controlling mercury emissions, as well as having many other applications. Gold coated Quartz Crystal Microbalance (QCM) based sensors employing enhanced nano-structured surfaces have been developed which show a substantial increase in response magnitude of at least 67% over non-modified QCMs. Additionally, the Hg-Au sticking probability calculated from the QCM data of the modified and non-modified sensors showed increased Hg affinity for the modified sensor. Furthermore, the modified QCM sensor was found to have better repeatability and stability while having 47 fold lower drift at the higher operating temperature, when compared to its non-modified counterpart.
机译：铝土矿采矿和炼油厂实践的可持续性依赖于减少传统流程对环境影响的企图。由行业和监管机构设定的汞还原目标刺激了开发用于评估汞清除过程效率的技术。适用于氧化铝炼油厂的汞传感器的发展将是控制汞排放的重大突破，以及有许多其他应用。已经开发出采用增强型纳米结构表面的金涂层石英晶体微稳定（QCM）的传感器，其显示出在非修饰的QCMS上至少67％的响应幅度的显着增加。另外，由修改和未修改的传感器的QCM数据计算的HG-Au粘附概率显示改进传感器的Hg亲和力增加。此外，与其未改进的对应物相比，发现改性的QCM传感器具有更好的可重复性和稳定性，同时在较高的操作温度下具有47倍的漂移。

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