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200 1 _aFormulation of a slow-release fertilizer by mechanical activation of smectite/glauconite and urea mixtures
_fM. A. Rudmin, S. Banerjee, T. Yu. Yakich [et al.]
203 _aText
_celectronic
300 _aTitle screen
330 _aThis study demonstrates the formulation of slow-release fertilizers by the mechanical activation of a mixture of powdered clays and urea in the ratio 2:3, using planetary or ring milling techniques. The activation produces micro-aggregates of composites with intercalated clay and urea and is rimmed by the latter. Smectite-urea and glauconite-urea mixture shows an intercalation between urea and clay from the beginning of activation. A shift of X-Ray Diffractional parameters and the intensities of FTIR peaks record the systematic structural changes of the composites with increasing duration of activation. The maximum intercalation of clays and urea requires operation times of 20 and 60 min in planetary and ring mills, respectively. The external urea forms a uniform coating around the intercalated structure using the planetary mill, and it keeps on growing as the operation time increases. Therefore, this investigation reveals the optimum activation conditions for the formation of composites with layered structures. While the direct application of urea releases nitrogen to the soil at a fast rate, the resulting composites are likely to liberate the nutrient at a slow rate. Additionally, the composites made from a mixture of glauconite and urea releases potassium at a slow rate. The resultant composites meet the criteria of multifunctional slow-release fertilizers.
333 _aРежим доступа: по договору с организацией-держателем ресурса
461 _tApplied Clay Science
463 _tVol. 196
_v[105775, 10 p.]
_d2020
610 1 _aэлектронный ресурс
610 1 _aтруды учёных ТПУ
610 1 _aglauconite
610 1 _asmectite
610 1 _aurea
610 1 _amechanical activation
610 1 _aslow-release fertilizer
610 1 _apotassium-nitrogen fertilizer
610 1 _aглауконит
610 1 _aсмектиты
610 1 _aмочевина
610 1 _aмеханическая активация
610 1 _aудобрения
610 1 _aкалийно-азотные сульфатные удобрения
701 1 _aRudmin
_bM. A.
_cgeologist
_cEngineer-researcher of Tomsk Polytechnic University
_f1989-
_gMaksim Andreevich
_2stltpush
_3(RuTPU)RU\TPU\pers\33254
701 1 _aBanerjee
_bS.
_gSantanu
701 1 _aYakich
_bT. Yu.
_cgeologist
_cAssociate Professor of Tomsk Polytechnic University, Candidate of geological and mineralogical sciences
_f1984-
_gTamara Yurievna
_2stltpush
_3(RuTPU)RU\TPU\pers\43279
701 1 _aTabakaev
_bR. B.
_cspecialist in the field of heat and power engineering
_cEngineer of Tomsk Polytechnic University, Postgraduate
_f1986-
_gRoman Borisovich
_2stltpush
_3(RuTPU)RU\TPU\pers\32988
701 1 _aIbraeva
_bK. T.
_cspecialist in power engineering
_cResearch Engineer of Tomsk Polytechnic University
_f1993-
_gKanipa Talgatovna
_2stltpush
_3(RuTPU)RU\TPU\pers\46298
701 1 _aBuyakov
_bA. S.
_cspecialist in material science
_cassistant Professor of Tomsk Polytechnic University
_f1992-
_gAles Sergeevich
_2stltpush
_3(RuTPU)RU\TPU\pers\40001
701 1 _aSoktoev
_bB. R.
_cGeochemist
_cAssistant of the Department of Tomsk Polytechnic University
_f1990-
_gBulat Rinchinovich
_2stltpush
_3(RuTPU)RU\TPU\pers\34950
701 1 _aRuban
_bA. S.
_cgeologist
_cengineer of Tomsk Polytechnic University
_f1991-
_gAleksey Sergeevich
_2stltpush
_3(RuTPU)RU\TPU\pers\34023
712 0 2 _aНациональный исследовательский Томский политехнический университет
_bИнженерная школа природных ресурсов
_bОтделение геологии
_h8083
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712 0 2 _aНациональный исследовательский Томский политехнический университет
_bИнженерная школа энергетики
_bНаучно-образовательный центр И. Н. Бутакова (НОЦ И. Н. Бутакова)
_h8025
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712 0 2 _aНациональный исследовательский Томский политехнический университет
_bИнженерная школа новых производственных технологий
_bОтделение материаловедения
_h7871
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801 2 _aRU
_b63413507
_c20200828
_gRCR
856 4 _uhttps://doi.org/10.1016/j.clay.2020.105775
942 _cCF