Determination of relative solids concentration in homogeneous dual component pulp-filler suspension by multi-spectrophotometer
| Autor: | Viviane Forsberg, Rauno Heikkilä, Ilpo Niskanen, Daniel Zakrisson, Birgitta A. Engberg, Göran Thungström |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Pulp (paper) System of measurement Forestry 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology 01 natural sciences Homogeneous Attenuation coefficient 0103 physical sciences engineering General Materials Science Composite material 010306 general physics 0210 nano-technology |
| Zdroj: | Nordic Pulp & Paper Research Journal. 35:71-77 |
| ISSN: | 2000-0669 0283-2631 |
| DOI: | 10.1515/npprj-2018-0058 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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