Mechanochemical route for synthesizing KMgPO4 and NH4MgPO4 for application as slow-release fertilizers

Solihin; Qiwu Zhang; William Tongamp; Fumio Saito

doi:10.1021/ie901780v

Mechanochemical route for synthesizing KM_gPO₄ and NH₄M_gPO₄ for application as slow-release fertilizers

Solihin, Qiwu Zhang, William Tongamp, Fumio Saito

Division of Process and System Engineering

Research output: Contribution to journal › Article › peer-review

40 Citations (Scopus)

Abstract

This article introduces a mechanochemical (MC) process for the synthesis of KMgPO₄ and NH₄MgPO₄ by milling starting materials in a planetary ball mill. First, KMgPO₄ was prepared by milling KHPO₄ and Mg(OH)₂ at a molar ratio of 1:1 for 120 min at mill rotational speeds of 500-600 rpm. Washing of KMgPO₄ in water for 700 h released only up to 20-25% of K⁺ and PO₄ ^2- ions into solution. Second, NH₄MgPO₄ was prepared by milling NH₄HPO₄ and Mg(OH)₂ at a molar ratio of 1:1 for 120 min at mill rotational speeds of 300-700 rpm. Washing of NH₄MgPO₄ in water for 500 h released only up to 10-20% of NH₄⁺ and PO₄^2- ions into solution. The MC process could be developed to synthesize KMgPO₄ and NH₄MgPO₄ for possible application as slow-release fertilizers.

Original language	English
Pages (from-to)	2213-2216
Number of pages	4
Journal	Industrial and Engineering Chemistry Research
Volume	49
Issue number	5
DOIs	https://doi.org/10.1021/ie901780v
Publication status	Published - 2010 Mar 3

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Industrial and Manufacturing Engineering

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title = "Mechanochemical route for synthesizing KMgPO4 and NH4MgPO4 for application as slow-release fertilizers",

abstract = "This article introduces a mechanochemical (MC) process for the synthesis of KMgPO4 and NH4MgPO4 by milling starting materials in a planetary ball mill. First, KMgPO4 was prepared by milling KHPO4 and Mg(OH)2 at a molar ratio of 1:1 for 120 min at mill rotational speeds of 500-600 rpm. Washing of KMgPO4 in water for 700 h released only up to 20-25% of K+ and PO4 2- ions into solution. Second, NH4MgPO4 was prepared by milling NH4HPO4 and Mg(OH)2 at a molar ratio of 1:1 for 120 min at mill rotational speeds of 300-700 rpm. Washing of NH4MgPO4 in water for 500 h released only up to 10-20% of NH4+ and PO42- ions into solution. The MC process could be developed to synthesize KMgPO4 and NH4MgPO4 for possible application as slow-release fertilizers.",

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AU - Solihin,

AU - Zhang, Qiwu

AU - Tongamp, William

AU - Saito, Fumio

PY - 2010/3/3

Y1 - 2010/3/3

N2 - This article introduces a mechanochemical (MC) process for the synthesis of KMgPO4 and NH4MgPO4 by milling starting materials in a planetary ball mill. First, KMgPO4 was prepared by milling KHPO4 and Mg(OH)2 at a molar ratio of 1:1 for 120 min at mill rotational speeds of 500-600 rpm. Washing of KMgPO4 in water for 700 h released only up to 20-25% of K+ and PO4 2- ions into solution. Second, NH4MgPO4 was prepared by milling NH4HPO4 and Mg(OH)2 at a molar ratio of 1:1 for 120 min at mill rotational speeds of 300-700 rpm. Washing of NH4MgPO4 in water for 500 h released only up to 10-20% of NH4+ and PO42- ions into solution. The MC process could be developed to synthesize KMgPO4 and NH4MgPO4 for possible application as slow-release fertilizers.

AB - This article introduces a mechanochemical (MC) process for the synthesis of KMgPO4 and NH4MgPO4 by milling starting materials in a planetary ball mill. First, KMgPO4 was prepared by milling KHPO4 and Mg(OH)2 at a molar ratio of 1:1 for 120 min at mill rotational speeds of 500-600 rpm. Washing of KMgPO4 in water for 700 h released only up to 20-25% of K+ and PO4 2- ions into solution. Second, NH4MgPO4 was prepared by milling NH4HPO4 and Mg(OH)2 at a molar ratio of 1:1 for 120 min at mill rotational speeds of 300-700 rpm. Washing of NH4MgPO4 in water for 500 h released only up to 10-20% of NH4+ and PO42- ions into solution. The MC process could be developed to synthesize KMgPO4 and NH4MgPO4 for possible application as slow-release fertilizers.

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Mechanochemical route for synthesizing KM_gPO₄ and NH₄M_gPO₄ for application as slow-release fertilizers

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