Release of phosphate from compacted urea-phosphate rock-peat matrices in solution

Aminuddin Hussin, . and Ahmad Husni Mohd Hanif, . and Alias H., . (1997) Release of phosphate from compacted urea-phosphate rock-peat matrices in solution. [Proceedings Paper]

The influence of organic material peat on the dissolution of phosphate rock PR and P released was investigated PR mixed with different amounts of peat and then compacted was suspended in solution. P and Ca released in solution and solution pH were determined. Solution P and Ca were found to increased with increasing amount of peat. The presence of urea in the compacted mixture increased the pH resulting in humic acid being hydrolysed. Ca from the PR was found to be chelated by the humic acid resulting in the dissolution of PR. However the supposedly released P from the dissolution was not detected in the solution.

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Abstract

The influence of organic material peat on the dissolution of phosphate rock PR and P released was investigated PR mixed with different amounts of peat and then compacted was suspended in solution. P and Ca released in solution and solution pH were determined. Solution P and Ca were found to increased with increasing amount of peat. The presence of urea in the compacted mixture increased the pH resulting in humic acid being hydrolysed. Ca from the PR was found to be chelated by the humic acid resulting in the dissolution of PR. However the supposedly released P from the dissolution was not detected in the solution.

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Item Type:	Proceedings Paper
AGROVOC Term:	UREA
AGROVOC Term:	ROCK PHOSPHATE
AGROVOC Term:	PEAT
AGROVOC Term:	SOLUTIONS
AGROVOC Term:	DISSOLVING
AGROVOC Term:	PHOSPHATES
AGROVOC Term:	CALCIUM
AGROVOC Term:	SOIL CHEMISTRY
AGROVOC Term:	SOIL CHEMICOPHYSICAL PROPERTIES
AGROVOC Term:	MALAYSIA
Geographical Term:	MALAYSIA
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:27
URI:	http://webagris.upm.edu.my/id/eprint/16212

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