A simple color concentration measurement technique for powders

Heather Emady; Maya Wittman; Sara Koynov; William G. Borghard; Fernando J. Muzzio; Benjamin J. Glasser; Alberto M. Cuitino

doi:10.1016/j.powtec.2015.07.050

A simple color concentration measurement technique for powders

Heather Emady, Maya Wittman, Sara Koynov, William G. Borghard, Fernando J. Muzzio, Benjamin J. Glasser, Alberto M. Cuitino

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

Looking for a way to measure residence time distributions of an 80 micron fluidized cracking catalyst (FCC) powder, a simple measurement technique was discovered that quantifies tracer color concentration. Using a color spectrophotometer that measures percent reflectance as a function of wavelength, a calibration curve can be constructed for standard mixtures of dyed and un-dyed powder. This calibration curve can then be used to determine the color concentration of an unknown sample by measuring its reflectance. The effects of operating parameters such as dye strength, aperture size, surface roughness, sample volume and depth, and continuous flow were all evaluated. This spectrophotometric technique was found to be a quick and simple way to measure colored mixture concentrations. In addition to being ideal for residence time distribution applications, it has the potential to easily quantify mixing in any unit operation, batch or continuous.

Original language	English (US)
Pages (from-to)	392-400
Number of pages	9
Journal	Powder Technology
Volume	286
DOIs	https://doi.org/10.1016/j.powtec.2015.07.050
State	Published - Dec 1 2015

Keywords

Calibration
Color
Mixing
Powder
Spectrophotometer
Tracer

ASJC Scopus subject areas

General Chemical Engineering

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10.1016/j.powtec.2015.07.050

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title = "A simple color concentration measurement technique for powders",

abstract = "Looking for a way to measure residence time distributions of an 80 micron fluidized cracking catalyst (FCC) powder, a simple measurement technique was discovered that quantifies tracer color concentration. Using a color spectrophotometer that measures percent reflectance as a function of wavelength, a calibration curve can be constructed for standard mixtures of dyed and un-dyed powder. This calibration curve can then be used to determine the color concentration of an unknown sample by measuring its reflectance. The effects of operating parameters such as dye strength, aperture size, surface roughness, sample volume and depth, and continuous flow were all evaluated. This spectrophotometric technique was found to be a quick and simple way to measure colored mixture concentrations. In addition to being ideal for residence time distribution applications, it has the potential to easily quantify mixing in any unit operation, batch or continuous.",

keywords = "Calibration, Color, Mixing, Powder, Spectrophotometer, Tracer",

author = "Heather Emady and Maya Wittman and Sara Koynov and Borghard, {William G.} and Muzzio, {Fernando J.} and Glasser, {Benjamin J.} and Cuitino, {Alberto M.}",

note = "Funding Information: The authors would like to acknowledge funding from the Rutgers Catalyst Manufacturing Science and Engineering Consortium . The authors would also like to thank Dr. James Scicolone for taking the SEM photographs. Publisher Copyright: {\textcopyright} 2015 Elsevier B.V.",

year = "2015",

month = dec,

day = "1",

doi = "10.1016/j.powtec.2015.07.050",

language = "English (US)",

volume = "286",

pages = "392--400",

journal = "Powder Technology",

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AU - Emady, Heather

AU - Wittman, Maya

AU - Koynov, Sara

AU - Borghard, William G.

AU - Muzzio, Fernando J.

AU - Glasser, Benjamin J.

AU - Cuitino, Alberto M.

N1 - Funding Information: The authors would like to acknowledge funding from the Rutgers Catalyst Manufacturing Science and Engineering Consortium . The authors would also like to thank Dr. James Scicolone for taking the SEM photographs. Publisher Copyright: © 2015 Elsevier B.V.

PY - 2015/12/1

Y1 - 2015/12/1

N2 - Looking for a way to measure residence time distributions of an 80 micron fluidized cracking catalyst (FCC) powder, a simple measurement technique was discovered that quantifies tracer color concentration. Using a color spectrophotometer that measures percent reflectance as a function of wavelength, a calibration curve can be constructed for standard mixtures of dyed and un-dyed powder. This calibration curve can then be used to determine the color concentration of an unknown sample by measuring its reflectance. The effects of operating parameters such as dye strength, aperture size, surface roughness, sample volume and depth, and continuous flow were all evaluated. This spectrophotometric technique was found to be a quick and simple way to measure colored mixture concentrations. In addition to being ideal for residence time distribution applications, it has the potential to easily quantify mixing in any unit operation, batch or continuous.

AB - Looking for a way to measure residence time distributions of an 80 micron fluidized cracking catalyst (FCC) powder, a simple measurement technique was discovered that quantifies tracer color concentration. Using a color spectrophotometer that measures percent reflectance as a function of wavelength, a calibration curve can be constructed for standard mixtures of dyed and un-dyed powder. This calibration curve can then be used to determine the color concentration of an unknown sample by measuring its reflectance. The effects of operating parameters such as dye strength, aperture size, surface roughness, sample volume and depth, and continuous flow were all evaluated. This spectrophotometric technique was found to be a quick and simple way to measure colored mixture concentrations. In addition to being ideal for residence time distribution applications, it has the potential to easily quantify mixing in any unit operation, batch or continuous.

KW - Calibration

KW - Color

KW - Mixing

KW - Powder

KW - Spectrophotometer

KW - Tracer

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DO - 10.1016/j.powtec.2015.07.050

M3 - Article

AN - SCOPUS:84940518698

SN - 0032-5910

VL - 286

SP - 392

EP - 400

JO - Powder Technology

JF - Powder Technology

ER -

A simple color concentration measurement technique for powders

Abstract

Keywords

ASJC Scopus subject areas

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