Improved Setup for Decolourization Experiments with Granular and Powdered Adsorbent Materials Using UV-VIS Flow-through Cells

Textile wastewater treatment poses global challenges due to complex and costly processes, particularly in the adsorption-based decolourization step. Existing experimental methodologies for adsorption suffer from inconsistencies, hindering comparability across studies. To address this, we developed a...

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Bibliographic Details
Main Authors: Martin Behringer, Harald Hilbig, Brigitte Helmreich, Alisa Machner
Format: Article
Language:English
Published: Elsevier 2025-06-01
Series:MethodsX
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Online Access:http://www.sciencedirect.com/science/article/pii/S2215016125001359
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Summary:Textile wastewater treatment poses global challenges due to complex and costly processes, particularly in the adsorption-based decolourization step. Existing experimental methodologies for adsorption suffer from inconsistencies, hindering comparability across studies. To address this, we developed a universal setup integrating conventional adsorption methods with pharmaceutical dissolution techniques. This approach provides continuous UV-VIS monitoring of adsorption processes without external filtration, which is suitable for both fine powders (∼microns) and granular particles (∼millimetres) and is applicable to both natural and synthetic adsorbents. Case studies conducted with powdered and granular adsorbents confirmed this method's robustness, reproducibility, and enhanced accuracy, allowing real-time, precise monitoring. Overall, this versatile approach significantly improves reliability in adsorption experiments, offering a broadly applicable solution for adsorption monitoring in wastewater treatment research. • A versatile setup combining adsorption methods with flow-through UV-VIS spectrometry. • Enables continuous monitoring of decolourization without the need for external filtration. • Applicable to a wide range of adsorbent materials, from fine powders to granulates.
ISSN:2215-0161