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Shallow pond systems planted with Lemna minor treating azo dyes

Yaseen, D and Scholz, M 2016, 'Shallow pond systems planted with Lemna minor treating azo dyes' , Ecological Engineering, 94 , pp. 295-305.

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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.

Item Type: Article
Schools: Schools > School of Computing, Science and Engineering > Salford Innovation Research Centre (SIRC)
Journal or Publication Title: Ecological Engineering
Publisher: Elsevier
ISSN: 0925-8574
Related URLs:
Funders: Government of Iraq
Depositing User: M Scholz
Date Deposited: 28 Jun 2016 07:36
Last Modified: 05 Jul 2016 09:08
URI: http://usir.salford.ac.uk/id/eprint/39260

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