Your browser does not support JavaScript!

:::

 

 

A New Waste-Oil Treatment System
A research team led by Prof. Ling Yong-chien of the Department of Chemistry has developed a wet smelting process for removing arsenic from the waste cutting oil produced in semiconductor manufacturing, as well as a process for converting the waste oil into valuable carbon quantum dots (CQD), thereby making a major contribution to the reduction of industrial pollution.
 
This patented technology has already attracted the attention of the local semiconductor industry. Last week the Taiwan subsidiary of SEI Electronics Materials, one of the top five manufacturers of electronic materials in Japan, signed a contract with the Department of Chemistry and will soon begin using this new technology to clean its cutting oil.
 
The main material used by SEI to produce semiconductors is gallium arsenide (GaAs), but dealing with the waste cutting oil produced during the manufacturing process is a big headache for manufacturers. SEI’s general manager said that his company attaches great importance to environmental protection, but it’s not easy to find a waste disposal company qualified to deal with the used cutting oil. With this new technology, however, SEI will be able to handle its own waste oil, and in the future can also help other manufacturers facing the same problem.
 
Knowing that SEI was searching for a solution to this polluting problem, Prof. Ling and his research team at the Green Chemistry and Mass Spectrometry Analytical Laboratory spent 3 months designing their wet smelting process, which takes only one hour to remove the arsenic from 500ml of waste oil. The cleaned oil can then be turned into CQDs—a fine example of waste recycling.
 
Prof. Ling said that his research team will assist SEI in setting up a plant-scale system for the treatment of waste cutting oil, and that this will help SEI reduce its operating costs.
 

Prof. Ling of the Department of Chemistry (right) and SEI’s general manager recently signed a contract for setting up a waste-oil treatment system.

Prof. Ling of the Department of Chemistry (right) and SEI’s general manager recently signed a contract for setting up a waste-oil treatment system.


The SEI-NTHU joint project is a fine example of recycling the waste material and turning it into something useful.

The SEI-NTHU joint project is a fine example of recycling the waste material and turning it into something useful.


Used cutting oil before (left) and after (right) the treatment process.

Used cutting oil before (left) and after (right) the treatment process.

>>>

No. of visitors