Treatment of the textile industry effluent in a pilot-scale vertical flow constructed wetland system augmented with bacterial endophytes

The Science of the Total Environment
Zahid HussainMuhammad Afzal

Abstract

A pilot-scale vertical flow constructed wetland (VFCWs) system was designed, implemented and operated for one year for the treatment of dye-rich real textile effluent. Brachiaria mutica was vegetated to develop VFCWs in which five different textile effluent degrading endophytic bacteria were inoculated. These bacteria were screened based on their dye degrading and plant growth promoting capabilities. The system's performance was evaluated by monitoring physicochemical parameters, nutrients removal, heavy metals reduction, detoxification potential, and persistence of endophytic bacteria in the plant rhizo- and endosphere. Although VFCWs were able to remove a majority of the pollutants from the wastewater, bacterial augmentation further enhanced the remediation efficiency. The system promoted an increase in dissolved oxygen up to 188% and, concomitantly, a substantial decrease in the chemical oxygen demand (81%), biochemical oxygen demand (72%), total dissolved solids (32%), color (74%), nitrogen (84%), phosphorous (79%), and heavy metals [Cr(97%), Fe(89%), Ni(88%), Cd(72%)] was recorded. Wastewater treated with VFCWs augmented with bacteria was found to be non-toxic and inoculated bacteria showed persistence in the root and shoo...Continue Reading

Citations

Jan 9, 2019·Environmental Science and Pollution Research International·Hassan HeidariIraj Nosratti
May 28, 2019·Environmental Science and Pollution Research International·Phuong Minh NguyenMuhammad Arslan
Jun 28, 2019·International Journal of Phytoremediation·Khadeeja RehmanMuhammad Afzal
Nov 10, 2018·Environmental Science and Pollution Research International·Tanveer SaeedAriful Hasnat
Mar 2, 2021·International Journal of Biological Macromolecules·Susanne P DruzianGuilherme L Dotto
Feb 23, 2021·The Science of the Total Environment·Katharina TonderaJacques Brisson
Jun 23, 2020·Chemistry of Materials : a Publication of the American Chemical Society·Mihai Irimia-VladuNiyazi Serdar Sariciftci
Sep 30, 2021·Environmental Science and Pollution Research International·Shuting ShenXiwu Lu
Jul 8, 2021·Environmental Science and Pollution Research International·Nain TaraHans Brix

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