Partial Least Squares Regression Calibration of an Ultraviolet-Visible Spectrophotometer for Measurements of Chemical Oxygen Demand in Dye Wastewater

Wei, Mei; Zhang, J.-F.; Zhao, Xiaofei; Li, Z.; Xu, Zhiwei

doi:10.1007/s10812-017-0548-6

Cited by 2 publications

(1 citation statement)

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“…Lourenco et al developed a PLS model based on UV spectra for the determination of total organic compounds and illustrate the cost efficiency of online measuring methods in which commercial spectrometers are coupled with fiber‐optic measuring probes and directly implemented in process streams. Further publications use comparable systems to determine COD, total suspended solids, or dyes in urban or industrial waste water .…”

Section: Introductionmentioning

confidence: 99%

Development of a Measuring Method for the Determination of Bisulfite and Sulfite in Seawater

Birkmann

Pasel

Luckas

et al. 2019

Chemie Ingenieur Technik

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In conventional reverse osmosis processes for seawater desalination, a disinfection of the process stream with chlorine compounds is carried out for antifouling. After disinfection the reduction agent Na2S2O5 is used for the removal of residual chlorine in a strongly overstoichiometric way in order to protect the membranes from oxidational damages. To save chemicals a controlled dosing of Na2S2O5 based on a reliable concentration measurement is desirable. Therefore, a measuring method for the determination of the sulfur(IV) components bisulfite and sulfite in seawater is developed based on the combination of UV spectroscopy and a PLS regression method. Experimental results as well as the development of the regression model for sulfur species in ultrapure and seawater is described.

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Section: Introductionmentioning

confidence: 99%