The application of electrocoagulation process for treatment of the red mud dam wastewater from Bayer’s process

Kobya, Mehmet; Öncel, Mehmet Salim; Demirbaş, E.; Şık, E.; Akyol, Abdurrahman; İnce, Mahir

doi:10.1016/j.jece.2014.09.008

Cited by 21 publications

(7 citation statements)

References 28 publications

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“…Every tonne of alumina produced roughly generates between 1 and 2 tonne of dry bauxite residues, which varies according to the bauxite source and alumina extraction efficiencies [2].…”

Section: Introductionmentioning

confidence: 99%

Application of modified red mud in environmentally-benign applications: A review paper

Joseph

Taufiq‐Yap

Krishnan

et al. 2019

Environmental Engineering Research

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Red mud (RM) is a waste product that results from bauxite refining via the Bayer process. Its disposal remains an issue which raises significant environmental concerns, particularly if disposed on land or water bodies. Much research has been done on the use of red mud for environmentally-benign applications such as wastewater treatment, catalysis, the production of construction materials and glass ceramics, and for the recovery of metals. This paper reviews the current efforts made in the utilization of red mud as a valuable industrial by-product, which in turn should minimize its harmful impact on the environment. This detailed review compiles and highlights a variety of novel applications of modified red mud as a coagulant, an adsorbent for wastewater treatment, as well as, its use in catalytic processes and in building materials. The physico-chemical properties of red mud can be tuned by a range of treatment methods include acidification, neutralization and heat treatment. As revealed from the literature reviewed, modifications on red mud for the removal of various types of contaminants have shown promising results. However, further amendment and modifications on red mud are needed to utilize this industrial waste in many other industrial applications.

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“…Every tonne of alumina produced roughly generates between 1 and 2 tonne of dry bauxite residues, which varies according to the bauxite source and alumina extraction efficiencies [2].…”

Section: Introductionmentioning

confidence: 99%

Application of modified red mud in environmentally-benign applications: A review paper

Joseph

Taufiq‐Yap

Krishnan

et al. 2019

Environmental Engineering Research

View full text Add to dashboard Cite

show abstract

“…In addition, there is also a more rapid and effective separation of organic compounds from the solution compared to coagulation and the operating costs are lower compared to conventional techniques 27 . In the literature, we have witnessed the application of this method to real cases such as catering water for the removal of colloidal matter; oil in water emulsions from restaurants; and urban, agro-industrial and textile industry wastewater with a high content of organic pollutants and suspended solids 28,29 .…”

Section: The Electrocoagulation Methods (Ec) Is a Simple And Efficientmentioning

confidence: 99%

Elimination of Industrial Textile Dye by Electrocoagulation Using Iron Electrodes

Vidal

Espinoza

Contreras

et al. 2017

J. Chil. Chem. Soc.

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Electrocoagulation is a promising technique for the treatment of wastewater like the produced by the textile industry, which generates large volumes of water containing dyes. Thus, synthetic samples of the textile dye acid black 194 (AB194, CI 22910) were treated by this method using iron anodes at two different initial pH values. Tafel studies in the presence and absence of the dye were performed.The complete removal of AB194 from 1.0 L of solution in a static cell was achieved, at short electrolysis times, applying low-density currents at two different initial pH values.In addition, the operating costs by mass consumed anode, per cubic meter electocoagulated and per TOC unit, were assessed to help determine the most efficient conditions, considering a future application of the method in the industry.

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“…The amount of sludge produced is related to amount of removed pollutants (suspended solids, minerals and metals) (Kobya et al, 2006). The sludge generation is an important parameter in the EC treatment process because the amount of sludge produced during electrocoagulation presents an environmental relevance (Kobya et al, 2014).…”

Section: +mentioning

confidence: 99%

Reduction of Soluble Organic Carbon and Removal of Total Phosphorus and Metals From Swine Wastewater by Electrocoagulation

Mello

Zakrzevski

et al. 2018

Braz. J. Chem. Eng.

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In this study, the effects of operating time (t), current density (CD) and initial pH were investigated for soluble organic carbon (SOC) and total phosphorus (TP) removal from swine wastewater, pretreated in an UASB reactor, using an electrocoagulation process with aluminum (Al) and iron (Fe) electrodes. For the optimal conditions, Cu, Zn, Mn, Fe and Al removal, sludge production and energy consumption were evaluated. The removal efficiencies for the Al electrode were 78%, 96%, 84%, 99%, 65% and 84% for SOC, TP, Cu, Zn, Mn and Fe, respectively. For the Fe electrode the removal efficiencies were 57%, 96%, 81%, 99 % and 61% for SOC, TP, Cu, Zn and Mn, respectively. The sludge generated, energy consumption, and theoretical hydrogen yields were 5 g/L, 1-18 kWh/L and 0.7-8.5 kWh, respectively. The electrocoagulation process can be used for soluble organic carbon, phosphorus and metals removal from swine wastewater.

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The application of electrocoagulation process for treatment of the red mud dam wastewater from Bayer’s process

Cited by 21 publications

References 28 publications

Application of modified red mud in environmentally-benign applications: A review paper

Application of modified red mud in environmentally-benign applications: A review paper

Elimination of Industrial Textile Dye by Electrocoagulation Using Iron Electrodes

Reduction of Soluble Organic Carbon and Removal of Total Phosphorus and Metals From Swine Wastewater by Electrocoagulation

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