Application of heterogeneous photo-fenton process using chitosan beads for textile wastewater treatment
| Autor: | Maria Eliza Nagel Hassemer, Cristiane Lisboa Giroletti, Leonardo Dalri-Cecato, Dayane Gonzaga Domingos, Beatriz Lima Santos Klienchen Dalari |
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| Rok vydání: | 2020 |
| Předmět: |
Average diameter
Process Chemistry and Technology chemistry.chemical_element 02 engineering and technology 010501 environmental sciences 021001 nanoscience & nanotechnology Total dissolved solids 01 natural sciences Pollution Mercury (element) Catalysis Chitosan chemistry.chemical_compound chemistry Chemical engineering Process efficiency Chemical Engineering (miscellaneous) Sewage treatment 0210 nano-technology Waste Management and Disposal Effluent 0105 earth and related environmental sciences |
| Zdroj: | Journal of Environmental Chemical Engineering. 8:103893 |
| ISSN: | 2213-3437 |
| DOI: | 10.1016/j.jece.2020.103893 |
| Popis: | Among the Advanced Oxidative Processes (AOPs) applied in the degradation of toxic and resistant organic compounds such as dyes, the heterogeneous photo-Fenton process stands out, once it has high discoloration efficiency and operational simplicity. Given that, this study evaluated the efficiency of the heterogeneous photo-Fenton process in real textile wastewater treatment using chitosan beads as a solid catalyst. Laboratory-scale beads production and tests were carried out to monitor a photochemical reactor equipped with a mercury bulb of 125 W. Samples were collected at different reaction times, equal to 15, 30, 45, 60, 75, 90, and 105 min. The H2O2 concentration applied was 400 mg L−1. The chitosan beads weighed 2 g and were coated with iron, presenting an average diameter of approximately 4 mm. The results presented 91.92 % of effluent discoloration. It was possible to verify the process efficiency without iron precipitation when working with pH values above 6. Furthermore, the determination of other parameters behaviors, such as color, aromatic compounds, dissolved and total solids, as well as toxicity, was accomplished. |
| Databáze: | OpenAIRE |
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