Treatment of synthetic textile wastewater containing dye mixtures with microcosms

Yaseen, DA; Scholz, M

Abstract

The aim was to assess the ability of microcosms (laboratory-scale shallow ponds) as a post polishing stage for the remediation of artificial textile wastewater comprising two commercial dyes (basic red 46 (BR46) and reactive blue 198 (RB198)) as a mixture. The objectives were to evaluate the impact of Lemna minor L. (common duckweed) on the water quality outflows; the elimination of dye mixtures, organic matter, and nutrients; and the impact of synthetic textile wastewater comprising dye mixtures on the L. minor plant growth. Three mixtures were prepared providing a total dye concentration of 10 mg/l. Findings showed that the planted simulated ponds possess a significant (p < 0.05) potential for improving the outflow characteristics and eliminate dyes, ammonium-nitrogen (NH4-N), and nitrate-nitrogen (NO3-N) in all mixtures compared with the corresponding unplanted ponds. The removal of mixed dyes in planted ponds was mainly due to phyto-transformation and adsorption of BR46 with complete aromatic amine mineralisation. For ponds containing 2 mg/l of RB198 and 8 mg/l of BR46, removals were around 53%, which was significantly higher than those for other mixtures: 5 mg/l of RB198 and 5 mg/l of BR46 and 8 mg/l of RB198 and 2 mg/l of BR46 achieved only 41 and 26% removals, respectively. Dye mixtures stopped the growth of L. minor, and the presence of artificial wastewater reduced their development.

Citation

Yaseen, D., & Scholz, M. (2018). Treatment of synthetic textile wastewater containing dye mixtures with microcosms. Environmental Science and Pollution Research, 25(2), 1980-1997. https://doi.org/10.1007/s11356-017-0633-7

• Journal Article Type: Article
• Acceptance Date: Oct 26, 2017
• Online Publication Date: Nov 6, 2017
• Publication Date: Jan 1, 2018
• Deposit Date: Jul 25, 2018
• Publicly Available Date: Jul 25, 2018
• Journal: Environmental Science and Pollution Research
• Print ISSN: 0944-1344
• Electronic ISSN: 1614-7499
• Publisher: Springer Verlag
• Volume: 25
• Issue: 2
• Pages: 1980-1997
• DOI: https://doi.org/10.1007/s11356-017-0633-7
• Publisher URL: https://doi.org/10.1007/s11356-017-0633-7
• Related Public URLs: https://link.springer.com/journal/11356