Solid-State Mechanochemical Synthesis of Kaolinite-Urea Complexes for Application as Slow Release Fertilizer
作者: Ehab Al-ShamailehAiman Eid Al-RawajfehMohammad Alrbeihat
作者单位: 1Department of Chemistry, The University of Jordan, Amman 11942, Jordan
2Department of Chemical Engineering, Tafila Technical University, Tafila 66110, Jordan
刊名: Journal of Ecological Engineering, 2019, Vol.20 (9)
来源数据库: Polish Society of Ecological Engineering (Branch in Lublin)
关键词: Ball millingUreaKaoliniteMechanochemicalSlow-release
原始语种摘要: This study investigated a mechanochemical (MC) process for synthesizing a slow-release urea fertilizer by co-grinding 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...
全文获取路径: 波兰生态工程协会 (卢布林分会) 

  • kaolinite 高岭石
  • release 释放
  • nitrogen 
  • amorphous 非晶质的
  • synthesizing 综合
  • fertilizer 肥料
  • grinding 
  • rotational 转动
  • milling 捏炼
  • applied 应用的