1. Permeability of N, P, K-fertilizer nutrient and water vapor through PLA, PLA/PS, and PLA/HA membranes
- Author
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Ye Sihong, Kun Liu, Deng Xiaonan, Li Changfeng, Yan Xiaoming, and Liu Fangzhi
- Subjects
General Chemical Engineering ,poly lactic acid ,02 engineering and technology ,engineering.material ,complex mixtures ,Nutrient ,020401 chemical engineering ,0204 chemical engineering ,membrane ,QD1-999 ,polymer-coated fertilizer ,Chemistry ,technology, industry, and agriculture ,food and beverages ,Industrial chemistry ,General Chemistry ,021001 nanoscience & nanotechnology ,Membrane ,Chemical engineering ,Permeability (electromagnetism) ,engineering ,Fertilizer ,permeability ,0210 nano-technology ,mathematical model ,Water vapor ,Biotechnology - Abstract
To collect permeability data and establish its database of fertilizer nutrients and water vapor through different polymer membranes for the development of polymer-coated fertilizer, the permeabilities of N-, P-, and K-nutrient from saturated aqueous of urea, NaH2PO4 and KCl solution and the permeability of water vapor through the membranes of poly lactic acid (PLA), its blends with polystyrene (PS), and its composites with humic acid (HA) particles were determined experimentally at the temperatures of 288, 298, and 308 K, respectively. The effects of the addition of PS and HA particles, temperature, and coating thickness on the permeability of fertilizer nutrient and water vapor were investigated. It was found that the addition of PS and HA increased the permeability for both the fertilizer nutrients and water vapor. The increase in temperature raised the permeability of N-, P-, and K-nutrient while decrease the permeability of water vapor in the range studied.
- Published
- 2020