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Effect of incubation time on the kinetics of phosphate desorption from compost enriched with phosphate rock [electronic resource].

By:

Zaghloul, A. M

Contributor(s):

El-Kherbawy, M

Language: English Summary language: Arabic Description: p.305-321Other title:

تأثير زمن التحضين على كينيتيكية أنطلاق الفوسفات من الكمبوست المعامل بالصخر الفوسفاتى [Added title page title]

Uniform titles:

Egyptian journal of soil science, 2008 v. 48 (3) [electronic resource].

Subject(s):

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Full Text Article.

In: Egyptian journal of soil science 2008 v .48 (3)Summary: The objective of this study was to evaluate the kinetics of phosphate desorption from three types of phosphocompost differed in their rates of phosphate rock (PR), i,e., 10, 15 and 20%. These systems were incubated for time span from one to 120 days. The obtained results clearly indicate that the application of 15% PR mixed with compost led to increase P release by about 56% over control, however the highest concentration of PR only led to increase P desorption by 20%. The application of 10% PR to compost, however, gave-lowest increase in P desorption compared to other rates applied. Concerning of different kinetic models, e,g., modified Freundlich. Parabolic Diffusion and Hoerl's models: the data gave conformity by having high R2 and low SE for these models.

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The objective of this study was to evaluate the kinetics of phosphate desorption from three types of phosphocompost differed in their rates of phosphate rock (PR), i,e., 10, 15 and 20%. These systems were incubated for time span from one to 120 days. The obtained results clearly indicate that the application of 15% PR mixed with compost led to increase P release by about 56% over control, however the highest concentration of PR only led to increase P desorption by 20%. The application of 10% PR to compost, however, gave-lowest increase in P desorption compared to other rates applied. Concerning of different kinetic models, e,g., modified Freundlich. Parabolic Diffusion and Hoerl's models: the data gave conformity by having high R2 and low SE for these models.

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