Determination of relative solids concentration in homogeneous dual component pulp-filler suspension by multi-spectrophotometer-Reference-Cited by-同舟云学术

Determination of relative solids concentration in homogeneous dual component pulp-filler suspension by multi-spectrophotometer

Published:2020-02-01 Issue:1 Volume:35 Page:71-77
ISSN:2000-0669
Container-title:Nordic Pulp & Paper Research Journal
language:en
Short-container-title:

Author:

Niskanen Ilpo¹^ORCID,Forsberg Viviane²³,Zakrisson Daniel⁴,Engberg Birgitta A.⁵,Heikkilä Rauno¹,Thungström Göran⁴

Affiliation:

1. Faculty of Technology, Structures and Construction Technology , 101225 University of Oulu , P.O. Box 7300 , Oulu , Finland

2. Department of Natural Sciences , Mid Sweden University , Holmgatan 10 , Sundsvall , Sweden

3. Department of Fibre and Polymer Technology , 298098 KTH Royal Institute of Technology , Teknikringen 56 , Stockholm , Sweden

4. Department of Electronics Design , Mid Sweden University , Holmgatan 10 , Sundsvall , Sweden

5. Department of Chemical Engineering , Mid Sweden University , Holmgatan 10 , Sundsvall , Sweden

Abstract

Abstract 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.

Funder

Stiftelsen för Kunskaps- och Kompetensutveckling

Stiftelsen Åforsk

Publisher

Walter de Gruyter GmbH

Subject

General Materials Science,Forestry

Link

https://www.degruyter.com/document/doi/10.1515/npprj-2018-0058/pdf

Reference21 articles.

1. Bela, G., Liptak, B. (2003) Instrument engineers handbook. In: Consistency Analyzers, Ed. Waller, M. H., CRC Press, Boca Raton, USA.

2. Calvo-Flores, F. G., Dobado, J. A., Francisco, I.-G., Martin-Martinez, F. J. Lignin and Lignans as Renewable Raw Materials: Chemistry, Technology and Applications. John Wiley & Sons, Chishester UK, 2015.

3. CIE Color program, http://www.awitness.org/delphi_pascal_tutorial/source4/cie_color_marching_function_calculator.html (accessed 7 September 2018).

4. Erdoğan, N., Eken, H. A. (2017) Precipitated calcium carbonate production, synthesis and properties. Physicochem. Probl. Mineral Process. 53(1):57–68.

5. Fladda, G., Pettersson, T., Eriksson, L., Tidstam, G. (1980) A new optical method for measuring suspended solids in pulp and paper mill effluents. IFAC Proc. 13(4):9–22.