D Yaseen
Shallow pond systems planted with Lemna minor treating azo dyes
Yaseen, D; Scholz, M
Authors
M Scholz
Abstract
A higher demand on textile materials has resulted in an increase of the number of textile factories particularly in the developing world, which consequently negatively effects the environment due to their contaminated effluents. Textile effluents are highly coloured and mixed with different chemicals and pollutants. Shallow pond systems are a promising, cheap and effective technique for the treatment of contaminated wastewater. The aim of this study is to assess the performance of pond systems vegetated by Lemna minor L. (duckweed) for textile dye removal under controlled laboratory conditions. The key objectives of this study are to assess the influence of design variables on water quality parameters, the dye and chemical oxygen demand (COD) removal of dyes, and the effect of dye accumulation as a function of the relative growth rate of L. minor. Findings indicate that the simulated shallow pond system (as a polishing step) is able to remove only Basic Red 46 (BR46) in low concentrations, and ponds containing L. minor significantly (p < 0.05) outperformed algae-dominated ponds and control ponds. The simple chemical structure, absence of sulpho-group and small molecular weight associated with neutral pH values enhanced the capacity of the uptake of BR46 molecules. Furthermore, the total dissolved solid concentrations were within the threshold set for discharge to the aquatic environment.
Citation
Yaseen, D., & Scholz, M. (2016). Shallow pond systems planted with Lemna minor treating azo dyes. Ecological Engineering, 94, 295-305. https://doi.org/10.1016/j.ecoleng.2016.05.081
Journal Article Type | Article |
---|---|
Acceptance Date | May 27, 2016 |
Online Publication Date | Jun 14, 2016 |
Publication Date | Sep 1, 2016 |
Deposit Date | Jun 28, 2016 |
Publicly Available Date | Jun 29, 2017 |
Journal | Ecological Engineering |
Print ISSN | 0925-8574 |
Publisher | Elsevier |
Volume | 94 |
Pages | 295-305 |
DOI | https://doi.org/10.1016/j.ecoleng.2016.05.081 |
Publisher URL | http://dx.doi.org/10.1016/j.ecoleng.2016.05.081 |
Related Public URLs | http://www.journals.elsevier.com/ecological-engineering/ |
Additional Information | Funders : Government of Iraq |
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