Techno-economical evaluation of electrocoagulation for the textile wastewater using different electrode connections

Kobya, Mehmet; Bayramoǧlu, Mahmut; Eyvaz, Murat

doi:10.1016/j.jhazmat.2007.02.036

Cited by 171 publications

(90 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Finally, hydroxylated colloidal polymers and an insoluble precipitate of hydrated ferric oxide were formed and the removal efficiency was increased. In the case of Al-electrodes, when the initial pH was kept in the range of 4 to 8, all aluminum cations produced at the anode formed polymeric species Al 13 O 4 (OH) 24 7+ and precipitated Al(OH) 3 leading to a more effective treatment [31]. Fig.…”

Section: Effect Of Ph On Electrocoagulationmentioning

confidence: 99%

Comparison of Electrocoagulation and Chemical Coagulation for Heavy Metal Removal

2010

View full text Add to dashboard Cite

Copper (Cu), chromium (Cr), and nickel (Ni) removal from metal plating wastewater by electrocoagulation and chemical coagulation was investigated. Chemical coagulation was performed using either aluminum sulfate or ferric chloride, whereas electrocoagulation was done in an electrolytic cell using aluminum or iron electrodes. By chemical coagulation, Cu-, Cr-, and Ni-removal of 99.9 % was achieved with aluminum sulfate and ferric chloride dosages of 500, 1000, and 2000 mg L -1 , respectively. Removal of metals by electrocoagulation was affected by the electrode material, wastewater pH, current density, number of electrodes, and electrocoagulation time. Electrocoagulation with iron electrodes at a current density of 10 mA cm -2 , electrocoagulation time of 20 min, and pH 3.0 resulted in 99.9 % Cu-, 99.9 % Cr-, and 98 % Ni-removal.

show abstract

Section: Effect Of Ph On Electrocoagulationmentioning

confidence: 99%

Comparison of Electrocoagulation and Chemical Coagulation for Heavy Metal Removal

2010

View full text Add to dashboard Cite

show abstract

“…Most of the treatment methods have disadvantages. Regeneration of adsorbents is difficult [27,28]. Chemical coagulation needs to additional chemicals to wastewater and produces large amounts of sludge, which needs to be disposed [11].…”

Section: Introductionmentioning

confidence: 99%

“…Electrochemical treatment method is an eco-friendly and cost-effective method [34]. Among electrochemical treatments, electro-oxidation and electrocoagulation are more effective than the others to remove dye from textile wastewaters [22,28]. Main mechanisms of pollutant removal during electrocoagulation are including coagulation, adsorption, precipitation, and flotation [28].…”

Section: Introductionmentioning

confidence: 99%

“…Among electrochemical treatments, electro-oxidation and electrocoagulation are more effective than the others to remove dye from textile wastewaters [22,28]. Main mechanisms of pollutant removal during electrocoagulation are including coagulation, adsorption, precipitation, and flotation [28]. Electrocoagulation treatment has advantages such as smaller space in compare to biological treatments due to shorter reaction time [13,30], low sludge production in compare to chemical coagulation [23], low cost of equipment and operation and easy operation [17,47].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Dye Removal, Energy Consumption and Operating Cost of Electrocoagulation of Textile Wastewater as a Clean Process

Dalvand

Gholami

Joneidi

et al. 2011

CLEAN Soil Air Water

156

View full text Add to dashboard Cite

In this research, the efficiency of electrocoagulation treatment process using aluminum electrodes to treat synthetic wastewater containing Reactive Red198 (RR198) was studied. The effects of parameters such as voltage, time of reaction, electrode connection mode, initial dye concentration, electrolyte concentration, and inter electrode distance on dye removal efficiency were investigated. In addition, electrical energy consumption, electrode consumption, and operating cost at optimum condition have been investigated. The results showed that dye and chemical oxygen demand removals were 98.6 and 84%, respectively. Electrode consumption, energy consumption and operating cost were 0.052 kg/m 3 , 1.303 kWh/m 3 and 0.256 US$/m 3 , respectively. Dye removal kinetic followed first order kinetics. It can be concluded that electrocoagulation process by aluminum electrode is very efficient and clean process for reactive dye removal from colored wastewater.

show abstract

“…According to Kobya et al [2007], with the same initial pH, the final pH is 7.9 in electrocoagulation but 2.9 in conventional precipitation (FeCl 2 ). But there are numerous factors that determine the pH change required and should be considered every time given problem individually.…”

Section: Conventional Precipitation Methods Also Often Requiredmentioning

confidence: 99%

Wastewater parameters after the process of phosphorus compounds removal by the metal dissolution method in comparison with precipitation and electrocoagulation methods

Wysocka

2017

Ochrona Srodowiska I Zasobów Naturalnych

View full text Add to dashboard Cite

Increasing social awareness and strict legal regulations regarding the quality of discharged wastewater (the strategy 'end-of-pipe') have encouraged the development of new, more efficient methods of wastewater treatment. Following the strategy of 'clean production', the wastewater treatment processes should also adhere to the rules in force clean technologies.During the wastewater treatment, there has been increased interest in the removal of biogenic phosphorus compounds that can be removed using precipitation methods. These methods include the metal dissolution method, electrocoagulation and conventional method of chemical precipitation.The aim of this article is to show the differences between the metal dissolution method, electrocoagulation and conventional precipitation method (precipitation of metal salts) also in terms of the application 'clean production' strategy. Streszczenie Do efektywnych metod usuwania fosforu ze ścieków niewąt-pliwie należy zaliczyć metody strąceniowe. Najbardziej rozpowszechniona jest metoda strącania chemicznego bazująca na dozowaniu do roztworu soli żelaza, glinu lub wapnia. Na jej bazie powstała również proponowana w artykule metoda roztwarzania metali. Główną różnicą pomiędzy wymienionymi metodami jest sposób dozowania do roztworu środka strącającego. Celem niniejszego artykułu jest ukazanie korzyści wynikających z zastosowania metody roztwarzania metali jak również skutków ubocznych, z którymi należy się liczyć. W artykule wskazuje się na zaistniałe różnice w problematyce związanej z wtórnym zanieczyszczeniem ścieków związkami żelaza, przewodniości, zasadowości i regulacji pH po procesie strącania chemicznego, jak również na takie aspekty, jak wykorzystanie surowców wtórnych czy nakłady energetyczne. THEORY AbstractPrecipitation methods are commonly used for removing phosphorus compounds from wastewater. Chemical precipitation method, based on adding iron, aluminium or calcium salts to the treated wastewater, is often used. Another possible way of precipitating phosphates is metal dissolution method, which is presented in this paper. The main difference between these two methods is how the phosphate precipitating ions are introduced to the wastewater. This paper discusses advantages and disadvantages of the metal dissolution method in comparison with traditional precipitation methods. Differences in the secondary contamination of treated wastewater by iron ions, conductivity, total alkalinity and pH correction process; the use of recyclable wastes; and energy consumption are discussed.

show abstract

Techno-economical evaluation of electrocoagulation for the textile wastewater using different electrode connections

Cited by 171 publications

References 37 publications

Comparison of Electrocoagulation and Chemical Coagulation for Heavy Metal Removal

Comparison of Electrocoagulation and Chemical Coagulation for Heavy Metal Removal

Dye Removal, Energy Consumption and Operating Cost of Electrocoagulation of Textile Wastewater as a Clean Process

Wastewater parameters after the process of phosphorus compounds removal by the metal dissolution method in comparison with precipitation and electrocoagulation methods

Contact Info

Product

Resources

About