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Determination of relative solids concentration in homogeneous dual component pulp-filler suspension by multi-spectrophotometer
University of Oulu, Oulu, Finland.
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för naturvetenskap. KTH, Stockholm.
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för elektronikkonstruktion.
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för kemiteknik.ORCID-id: 0000-0003-3381-5516
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2020 (engelsk)Inngår i: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 35, nr 1, s. 71-77Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The concentration of fibers and fillers in the pulp suspension is an important parameter in the monitoring process. This paper proposes a versatile optical measurement system to estimate the concentration of a solids mixture in water. The geometry used in a multi-spectrophotometer (MSM) enables the controlled observation of transmission, and forward scattering light from the suspension in the UV-visible spectral range. We have developed the new fibers mixing system which gives a homogenous distribution of the fines and fillers making it possible to increase the reproducibility and accuracy of the measurement. The data analysis is based on the Beer-Lambert law and CIELAB color space equations. The results show that the proposed method is accurate for measuring the fines and filler concentrations in multicomponent suspensions. 

sted, utgiver, år, opplag, sider
2020. Vol. 35, nr 1, s. 71-77
Emneord [en]
Color, Fillers, Forward scattering, Meteorological instruments, Optical data processing, Spectrophotometers, Absorption co-efficient, Beer Lambert law, Filler concentration, fines, Monitoring process, Optical measurement systems, Reproducibilities, Solids concentrations, Suspensions (fluids)
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Identifikatorer
URN: urn:nbn:se:miun:diva-38488DOI: 10.1515/npprj-2018-0058ISI: 000518380700008Scopus ID: 2-s2.0-85079054151OAI: oai:DiVA.org:miun-38488DiVA, id: diva2:1395298
Tilgjengelig fra: 2020-02-21 Laget: 2020-02-21 Sist oppdatert: 2020-03-26bibliografisk kontrollert

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