Electrocoagulation using a rotated anode

A novel reactor design for textile wastewater treatment

Ahmed Samir Naje, Shreeshivadasan Chelliapan, Zuriati Zakaria, Saad A. Abbas

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

This paper investigates the optimum operational conditions of a novel rotated bed electrocoagulation (EC) reactor for the treatment of textile wastewater. The effect of various operational parameters such as rotational speed, current density (CD), operational time (RT), pH, temperature, and inter-electrode distance (IED) on the pollutant removal efficiency were examined. In addition, the consumption of aluminum (Al) and electrical energy, as well as operating costs at optimum conditions were also calculated. The results indicated that the optimum conditions for the treatment of textile wastewater were achieved at CD = 4 mA/cm2, RT = 10 min, rotational speed = 150 rpm, pH = 4.57, temperature = 25 °C, and IED = 1 cm. The electrode consumption, energy consumption, and operating costs were 0.038 kg/m3, 4.66 kWh/m3 and 0.44 US$/m3, respectively. The removal efficiencies of chemical oxygen demand (COD), biological oxygen demand (BOD), total suspended solid (TSS), turbidity and color were 97.10%, 95.55%, 98%, 96% and 98.50%, respectively, at the first 10 min of reaction time, while the phenol compound of the wastewater was almost entirely removed (99.99%). The experimental results confirm that the new reactor design with rotated anode impellers and cathode rings provided high treatment efficiency at a reduced reaction time and with lower energy consumption.

Original languageEnglish
Pages (from-to)34-44
Number of pages11
JournalJournal of Environmental Management
Volume176
DOIs
Publication statusPublished - 1 Jul 2016
Externally publishedYes

Fingerprint

Wastewater treatment
Textiles
Anodes
electrode
Wastewater
density current
Operating costs
wastewater
Electrodes
Current density
Energy utilization
Impellers
pollutant removal
Chemical oxygen demand
Turbidity
biochemical oxygen demand
cost
chemical oxygen demand
Phenols
turbidity

Keywords

  • Electrocoagulation
  • Electrode consumption
  • Rotated anode reactor
  • Textile wastewater

ASJC Scopus subject areas

  • Environmental Engineering
  • Waste Management and Disposal
  • Management, Monitoring, Policy and Law

Cite this

Electrocoagulation using a rotated anode : A novel reactor design for textile wastewater treatment. / Naje, Ahmed Samir; Chelliapan, Shreeshivadasan; Zakaria, Zuriati; Abbas, Saad A.

In: Journal of Environmental Management, Vol. 176, 01.07.2016, p. 34-44.

Research output: Contribution to journalArticle

Naje, Ahmed Samir ; Chelliapan, Shreeshivadasan ; Zakaria, Zuriati ; Abbas, Saad A. / Electrocoagulation using a rotated anode : A novel reactor design for textile wastewater treatment. In: Journal of Environmental Management. 2016 ; Vol. 176. pp. 34-44.
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