Waste polarizing film

Hydrothermal Conversion of Waste Polarizing Film to Acetic Acid... 

It has been proven that waste polarizers could be effectively converted into acetic acid by the hydrothermal reaction (shown in Figure 17.3) [50]. The waste polarizing films crushed into particles of diameter between 0.3 and 2 mm were treated in hydro-thermal environment with deionized water or H O -water mixture. According to analysis of acetic acid production, increasing reaction temperature, reaction time, and supply initially substantially improved yield and selectivity for acetic acid. The highest acetic acid yield of 33.4% with selectivity of 26.7% based on carbon was obtained from waste polarizer at 350 °C for 5 min with 0.6 ml H O. ... 

Hydrothermal method has been proven to be an effective method for the treatment of hazardous waste and resource recovery [12,16-24], It is reported that hydro-reaction can be applied to degradate brominated waste [25-28], waste liquid crystal, polarizing film, radioactive-ion exchange resins, and other hazardous waste [12, 16, 29-31] into innoxious substance. In addition, good seal environment can avert secondary pollution during operation process. 

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