Reusing PET Bottles as Vegetable Garden Pots!

2021-06-24

Professor Kao Jehng Jung of NCTU Institute of Environmental Engineering recycles PET bottles. He attaches rotating caps to them, covers them with a light weight board, fills them with soil containing vegetable seeds and herbs, and waters them using capillary action. The plants beautify roofs and balconies, and there is no waste water or no breeding ground for mosquitoes. Professor Kao has already developed wooden frames, basins and special 3D printings in the shape of Taiwan, and hopes to promote them to communities and schools as a contribution toward reducing global warming.

Professor Kao Jehng Jung said that he began recycling PET bottles two years ago to use as water supply bottles for plants. However, they needed workers to help assemble them and were inconvenient. The research team later designed a conversion cap that can fit over the mouth of the PET bottle and added an assembly plate which can hold four 600cc bottles. Then a high-tech non-woven fabric is used to deliver water through capillary action. The water needs to be replenished only once every two weeks through the drip irrigation system.

Professor Kao Jehng Jung said that this study is probably the world’s first prototype green garden that reuses recycled PET bottles as a base. It does not need to be waterproofed and does not affect heat dissipation at night. It is a DIY that even 5th grade students can do, and communities and schools can collect rainwater to divert into the PET bottles. 

Read more:https://www.nctu.edu.tw/press/3648

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