从牙科汞合金废料中回收汞——印度视角
Recovery of Mercury from Dental Amalgam Scrap-Indian Perspective.
作者信息
Sadasiva Kadandale, Rayar Sreeram, Manu Unnikrishnan, Senthilkumar Kumarappan, Daya Srinivasan, Anushaa Nagarajan
机构信息
Department of Conservative Dentistry and Endodontics, Chettinad Dental College and Research Institute, Kanchipuram, Tamil Nadu, India.
Department of Pedodontics, Chettinad Dental College and Research Institute, Kanchipuram, Tamil Nadu, India.
出版信息
J Pharm Bioallied Sci. 2017 Nov;9(Suppl 1):S79-S81. doi: 10.4103/jpbs.JPBS_90_17.
AIM
The aim is to recycle mercury from dental amalgam scrap using the vacuum distillation method.
MATERIALS AND METHODS
A total of 150 g of dental amalgam scrap was taken in a round bottom flask and was subjected to vacuum distillation at 398°C. The vapor of mercury was collected in another round bottom flask.
OBSERVATION
The procedure is carried out for mercury recovery using vacuum distillation apparatus, and mercury vapor are collected in a round bottom flask, and the silver is recovered using sucrose as reducing agent. Using 150 g of dental amalgam scrap 50%-80% of silver are recovered, and silver has a purity of 70%-80%. However, the total time required in the reduction process ranged between 303 and 600 min.
CONCLUSION
Mercury could be recycled from dental amalgam scrap through vacuum distillation method at 398°C and its implication of dental amalgam scrap in an Indian perspective.
目的
旨在采用真空蒸馏法从牙科汞合金废料中回收汞。
材料与方法
将总共150克牙科汞合金废料置于圆底烧瓶中，在398°C下进行真空蒸馏。汞蒸气收集于另一个圆底烧瓶中。
观察结果
使用真空蒸馏装置进行汞回收操作，汞蒸气收集于圆底烧瓶中，并用蔗糖作为还原剂回收银。使用150克牙科汞合金废料可回收50%-80%的银，且银的纯度为70%-80%。然而，还原过程所需的总时间在303至600分钟之间。
结论
在398°C下通过真空蒸馏法可从牙科汞合金废料中回收汞，以及从印度视角探讨牙科汞合金废料的意义。
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