Composting methods can be divided into domestic and industrial composting methods, which need to be slowly decomposed into water and carbon dioxide under certain conditions.
First of all, the industrial composting method refers to the completion of biodegradation in the environment of industrial composting. Therefore, the composting environment has industrial composting conditions, and it may not be biodegraded under other conditions. The pH value of the soil environment during the test needs to be between 7 to 9, the oxygen concentration should not be lower than 6%, the moisture content should be between 50% and 60%, and the temperature should be controlled at 58±2°C. "The general soil ambient temperature cannot be so high, and special industrial composting is required to maintain it. under such conditions." In addition, there is currently no industrial composting site and no recycling system in Taiwan, which is still under development.
The rules for household composting are roughly the same as the current industrial compostable biodegradable plastic certification methods. The only thing that needs to be changed is to change the temperature from 58±2℃ to 25℃±5℃. The decomposition test was extended from 180 days to 360 days, and the disintegration test was extended from 84 days to 180 days.” He said that more elastic molecular materials are currently considered household compost.
Finally, there is the marine decomposition method, which is the problem that plastics can also be decomposed in seawater to reduce marine pollution, and it is also the director of the development of alternative materials in the future.
Data reference source:
1. Social enterprise insights https://www.seinsights.asia/article/3291/3270/6736
