| 학회 | 한국재료학회 |
| 학술대회 | 2018년 봄 (05/16 ~ 05/18, 삼척 쏠비치 호텔&리조트) |
| 권호 | 24권 1호 |
| 발표분야 | B. 나노화학/바이오 분과 |
| 제목 | Organic-Inorganic Composite Media for Hydroponics |
| 초록 | Hydroponics is a method to grow plants without soil. This method has been attention to produce foods for future against a gradually increasing serious contamination of soil, a drought, damages from insects and a climate changing. In addition to it has several controllable properties such as a growing period, composition of nutrients, high additive plants production, CO2 reduction and saving water. In order to cultivate plants using hydroponic method, media as standing seeds and absorbing nutrient solution, green, red, blue and white LED for photosynthesis, temperature and humidity control system, circulating nutrient and recycling system and suitable CO2 atmosphere for photosynthesis are required. Among these requirements, media materials dominantly determine successful growing plants because it acts nutrient and water container to supply with balance. Rock wool as popular medium is a molten mineral came from volcano over 1600℃. However it causes environmental contamination because it is hardly degradable and high temperature melting process is required. Recently alternative media has been studied such as rice husk, coconut based media and fishbone. But theses eco-friendly media have low nutrient and water contents as well as biological contamination that decrease media performance. Therefore now new media materials involving similar properties of rock wool but easier degradation without contamination are needed. In this work, bio-degradable organic media with inorganic photo-catalyst nanoparticle composite are suggested as an alternative of rock wool. Polyethylene and polyethylene terephthalate was prepared sol-gel method with foaming gas. TiO2 nanoparticles were prepared by hydrothermal at Teflon lined stainless steel autoclave. Hydroponic test bed was fabricated using transparent plastic, LED, circulation system of nutrient solution with pump and temperature/humidity controller. Properties of media were compared with present rock wool and coconut based media by growing plants. Organic-inorganic composite media show better growing control than present media such as growth of root, shape of leaf and length. Acknowledgement This work was supported by the Technology development Program (C0563735) funded by the Ministry of SMEs and Startups(MSS, Korea) |
| 저자 | Hyun Kim, Dong Yun Kim, Bee Lyong Yang |
| 소속 | Kumoh National Institute of Technology |
| 키워드 | <P>Hydroponics; Organic-Inorganic media; Rock wool; rice husk</P> |
