Solid-State Mechanochemical Synthesis of Kaolinite-Urea Complexes for Application as Slow Release Fertilizer

• Autorzy: AlShamaileh Ehab M. , Al-Rawajfeh Aiman E. , Alrbaihat Mohammad R.

Identyfikatory

DOI

10.12911/22998993/110962

• Języki publikacji: EN

Abstrakty

EN

This study investigated a mechanochemical (MC) process for synthesizing a slow-release urea fertilizer by cogrinding the starting materials of (NH₂)₂CO and amorphous kaolinite in a planetary ball mill. The tests with kaolinite contents ranging from 25 to 75 wt. %, milling time ranging from 1 (h) to 3 (h) and mill rotational speeds from 200 to 700 rpm were performed to evaluate the incorporation of (NH₂)₂CO and release of nitrogen into the solution. The analyses conducted using XRD, TGA, FT-IR and KNDU (Kjeldahl Nitrogen Determination Unit) indicated that the MC process was successfully applied to incorporate (NH₂)₂CO into the amorphous kaolinite structure. The release of nitrogen from the system (kaolinite-(NH₂)₂CO) when dispersed in water for 24 h reached up to 20% at 25% wt of kaolinite. Moreover, under the milling speed conditions for the system (kaolinite–(NH₂)₂CO), release of nitrogen reached between 25 and 40%. These results indicated that the MC process can be developed to allow amorphous kaolinite to act as a carrier of nitrogen nutrients to be released slowly for use as fertilizer.

Słowa kluczowe

EN

mechano-chemical; ball milling; slow release; kaolinite; urea

• Wydawca: Polskie Towarzystwo Inżynierii Ekologicznej ; Lublin University of Technology
• Czasopismo: Journal of Ecological Engineering
• Rocznik: 2019
• Tom: Vol. 20, nr 9
• Strony: 267--276
• Opis fizyczny: Bibliogr. 23 poz., rys., tab.

Twórcy

autor

AlShamaileh Ehab M.

• Department of Chemistry, The University of Jordan, Amman 11942, Jordan

autor

Al-Rawajfeh Aiman E.

• Department of Chemical Engineering, Tafila Technical University, Tafila 66110, Jordan

autor

Alrbaihat Mohammad R.

• Department of Chemistry, The University of Jordan, Amman 11942, Jordan

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