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Enhanced photon‐migration methods for particle sizing in concentrated suspensions
Author(s) -
Jiang Huabei
Publication year - 1998
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690440805
Subject(s) - tikhonov regularization , particle size distribution , sizing , particle (ecology) , dynamic light scattering , particle size , distribution function , distribution (mathematics) , sedimentation , photon , computational physics , spectral power distribution , scattering , physics , inverse , materials science , statistical physics , inverse problem , optics , mathematics , mathematical analysis , chemistry , nanotechnology , thermodynamics , nanoparticle , geometry , oceanography , paleontology , organic chemistry , sediment , geology , biology
This article presents a new method for determining particle size distribution in undiluted suspensions from spectral measurement of transport‐scattering coefficients using continuous‐wave photon migration techniques. Particle size distribution (PSD) for concentrated suspensions is determined by a regularized inverse algorithm, which makes it possible to incorporate a synthesized scheme of Marquardt and Tikhonov regularizations. Spectral measurements of dense TiO 2 , suspensions with three different particle concentrations were used to recover the suspensions' size distributions. Our results are in excellent agreement with the size distribution measured with X‐ray sedimentation. These reconstructions of PSDs are obtained both with and without a priori distribution function assumptions.