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Макаревич, Николай Анатольевич; Богданович, Николай Иванович; Третьяков, Сергей Иванович; Коптелова, Елена Николаевна (2014)
Publisher: Altai State University
Journal: Khimiia rastitel'nogo syr'ia (Chemistry of plant raw material)
Languages: Russian
Types: Article
Subjects: диффузионная кинетика, константа скорости, коэффициенты диффузии, межфазовые процессы, адсорбция, поверхностное натяжение, экстракция, сушка, растительное сырье, береза, береста, diffusion kinetics, the rate constant, diffusion coefficients, interphase processes, adsorption, surface tension, extraction, drying, plant material, birch, elm
Предложено экспоненциальное уравнение диффузионной кинетики адсорбции, экстракции, сушки для растительного сырья с параметром g, учитывающим межчастичные взаимодействия в капиллярно-пористой анизотропной структуре твердой фазы: (Xt - Xр)/(X0 - Xр) = Bmexp(-krt)g, где Xt, X0, Xр, - текущее, начальное, равновесное значение либо поверхностного натяжения s, либо адсорбции Г, либо концентрации С, либо влагосодержания W, Bm- константа, зависящаяот формы (пористости) и природы частиц твердой фазы,kr - константа скорости, t - время. Рассмотрены алгоритмы расчета эффективных D* и истинных D коэффициентов диффузии процессов экстракции коры березы и сушки опилок березы в модельных приближениях частиц твердой фазы в виде неограниченной пластины, бесконечного цилиндра и шара. Установлено, что отклонению от идеальности в реальных процессах адсорбции и экстракции соответствуют значения g £ 1, а в процессе сушки g ³ 1.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

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    • Received December 4, 2013
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