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Removal of Natural Organic Matter from Wastewater by Electrocoagulation Using Aluminum Electrodes

Nasr Bensalah, Khaled Mansouri

2017enelectrocoagulationwastewateraluminumremovaltannic acid

Abstract

Language:

Electrocoagulation is a promising alternative to conventional chemical coagulation in water treatment systems. This study aimed to investigate the effectiveness of electrocoagulation using aluminum electrodes for the removal of natural organic matter, particularly tannic acid, from both synthetic and real industrial wastewater. An experimental approach was employed to assess the effects of various operational parameters such as supporting electrolyte, current density, and initial pH on the anodic dissolution of aluminum. The results indicated that both chemical and electrochemical dissolution contribute significantly to the formation of hydroxo-aluminum species, with the dissolution being greatly influenced by pH levels. The electrocoagulation process demonstrated high efficiency in reducing chemical oxygen demand (COD) from aqueous solutions, achieving over 60% COD removal in real wastewater samples from the pulp and paper industry under optimized conditions. The primary mechanism for tannic acid removal was identified as the adsorption of tannic acid molecules onto the aluminum hydroxide surface. Additionally, the specific energy consumption required for the electrochemical process using aluminum electrodes was estimated to range from 1 to 2 kWh m−3.

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Cite This Work

@article{25289dca-65ac-4e80-a62c-918af57af90c,
  title={Removal of Natural Organic Matter from Wastewater by Electrocoagulation Using Aluminum Electrodes},
  author={Nasr Bensalah and Khaled Mansouri},
  year={2017},
  language={en}
}
TY  - JOUR
TI  - Removal of Natural Organic Matter from Wastewater by Electrocoagulation Using Aluminum Electrodes
AU  - Nasr Bensalah
AU  - Khaled Mansouri
PY  - 2017
LA  - en
ER  -

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