Nutrient-impregnated charcoal: an environmentally friendly slow-release fertilizer

Modabber Ahmed Khan (), Ki-Wook Kim, Wang Mingzhi, Bu-Kug Lim, Weon-Hee Lee and Jong-Yoon Lee ()
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Modabber Ahmed Khan: Kyungpook National University
Ki-Wook Kim: Kyungpook National University
Wang Mingzhi: Kyungpook National University
Bu-Kug Lim: Kyungpook National University
Weon-Hee Lee: Kyungpook National University
Jong-Yoon Lee: Kyungpook National University

Environment Systems and Decisions, 2008, vol. 28, issue 3, 231-235

Abstract: Abstract The widespread contamination of surface and ground water quality from the heavy use of fertilizer in modern agriculture is the current concern. Therefore, this study was carried out to develop a slow-release fertilizer using charcoal. The morphology of the charcoal impregnated fertilizer was investigated by scanning electron microscopy (SEM). This study also evaluated the release patterns of N, P, and K from impregnated charcoal using a simulated soil solution and distilled water as leaching solutions. The patterns of N, P, and K releases were examined in both static and continuous-flow conditions for 360 h. Releases of N, P, and K from impregnated charcoal were found to be slow and steady. However, the release trends of N, P, and K were higher in soil solution than distilled water under both the above conditions. Dissolution occurred when N, P, and K were released in the above leached solutions. As a result, the fertilizer impregnated charcoal could be developed as slow-release type fertilizer to minimize the contamination.

Keywords: Charcoal; Slow-release; Fertilizer; Impregnation (search for similar items in EconPapers)
Date: 2008
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Citations: View citations in EconPapers (6)

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DOI: 10.1007/s10669-007-9133-5

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