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Type of information: TECHNICAL ARTICLES

In this section, you can access to the latest technical information related to the PISA project topic.

Carbonaceous microsphere?based superabsorbent polymer as filler for coating of NPK fertilizer: Fabrication, properties, swelling, and nitrogen release characteristics

Recently, the use of controlled release fertilizers in agriculture has resulted in huge benefits in plant growth and cultivation. Superabsorbent polymer (SAP)?coated fertilizers have the added advantage in retaining water in soil after irrigation and also reduce the nutrient release rate from soil in a controlled manner. This study aimed to produce a nitrogen?phosphorus?potassium (NPK) fertilizer coated with superabsorbent carbonaceous microspheres polymer (SPC) by inverse suspension polymerization method with water?retention and controlled release properties. Two sets of experiments were conducted: (1) three different weight percentages and (2) different materials. NPK coated with SPC showed increasing water?retention ability with respect to carbon microsphere percentages and retains >80% water at the 30th day of experiment compared with pure NPK and NPK coated with SAP. The slow release behavior of all samples was investigated by induced coupled plasma mass spectrometry spectrometry and results showed that NPK coated with SAP and SPC has a low release rate with

» Author: Tanveer Ahmed Khan, Munirah Ezzah Tuan Zakaria, Hyun?Joong Kim, Suriati Ghazali, Saidatul Shima Jamari

» Reference: doi:10.1002/app.48396

» Publication Date: 13/08/2019

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