Links

Tools

Export citation

Search in Google Scholar

Comparison of Different Electrocoagulation Processes for Real Wastewater Degradation

Journal article published in 2015 by Mona A. Abdel Fatah, Ahmed M. Awad, Enas, M. Ahmed, Ahmed T. El Aref
This paper is available in a repository.
This paper is available in a repository.

Full text: Download

Question mark in circle
Preprint: policy unknown
Question mark in circle
Postprint: policy unknown
Question mark in circle
Published version: policy unknown

Abstract

Real wastewater containing a well defined reactive dye as one of the contaminants was subjected to a number of degradative treatments. The main problem of textile wastewater is the deep colour which must be removed before discharge to the main environmental drainage. A plan for treating this wastewater was designed to involve electrocoagulation (EC) using aluminium and iron electrodes as well as electrocoagula-tion / Fenton treating processes. A follow up of the extent of degradation was carried out through estimation of chemical oxygen demand (COD), colour reduction and change of pH value. The deep colour of wastewater has been sufficiently removed as much as between 84.8 % and 98.6 % decolourization efficiency depending on EC process and initial pH of the coloured medium. A comparative correlation between EC processes employed at pH 3 revealed that COD removal and decolourization were superior to those at pH 9 especially on applying EC/Fenton process. In addition , the measurements of Fe and Mn contents using atomic absorption technique revealed the total removal of both % Fe and Mn after EC/Al process, while % Fe was slightly increased due to the external Fe2+ added after EC/Fenton process. XRD was used to specify the sludge precipitated after processes, the main precipitated materials detected were magnetite Fe24O32, Pyroxene-ideal Al4Na4Si8O 24