Electro-coagulation of reactive textile dyes and textile wastewater

Alinsafi, A.; Khemis, Mohamed; Pons, Marie‐Noëlle; Leclerc, Jean-Pierre; Yaacoubi, Abdelrani; Benhammou, A.; Nejmeddine, A.

doi:10.1016/j.cep.2004.06.010

Cited by 314 publications

(95 citation statements)

References 26 publications

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“…Five types of plant oil (cottonseed oil, olive oil, canola oil, sunflower oil and used cooking oil), five levels of pH (1, 4,7,10 and 13) and five temperatures (15,25,35,45 and 55 °C) were investigated. The experiments were designed as 5 3 factorials with 3 replicates.…”

Section: Experimental Designmentioning

confidence: 99%

“…These include: adsorption [10] , nanofiltration [11,12] , colloidal gas aphrons [13] , ultrasonic decomposition [14] , electro coagulation [15] , coagulation and precipitation [16] , advanced chemical oxidation [17] , electrochemical oxidation [18][19] , photooxidation [18] , predispersed solvent extraction [20] , ozonation [21][22][23][24] , supported liquid membrane [2,25,26] , liquid-liquid extraction [25,27] and aerobic and anaerobic biological processes [28,29] . The advantages and disadvantages of some methods of dye removal from wastewater are given in Table 1.…”

Section: Introductionmentioning

confidence: 99%

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Removal of Dye from Textile Wastewater Using Plant Oils Under Different pH and Temperature Conditions

Mahmoud¹,

Ghaly²,

Brooks³

2007

American J. of Environmental Sciences

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Abstract:The effectiveness of five plant oils (cottonseed, olive, canola sunflower and used cooking oil) for the removal of dye from textile wastewater was evaluated. The study revealed that the dye removal efficiency increased as the temperature was increased. Under low pH, both the oil and dye split into two components each. Neither one of the oil components joined with either one of the dye components. However, the observed reduction in the absorbance under acidic conditions can be attributed to the dye components losing some of their original color or producing different colors that were not effectively measured at 475 nm. When the dye solution was shaken with the oil under alkaline conditions, it formed a colloidal solution containing the oil plus the dye, resulting in a significant dye removal from solution. The results also showed that the optimum conditions for the dye removal for various oils were at a pH of 13 and a temperature of 55 °C, except for canola oil that produced the highest dye removal efficiency at pH of 7. The used cooking oil achieved the highest dye removal efficiency (95.45%) followed by olive oil (87.00%). The other oils (cottonseed, canola and sunflower achieved dye removal efficiencies below 58% and are, therefore, not recommended for dye removal.

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Section: Experimental Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Removal of Dye from Textile Wastewater Using Plant Oils Under Different pH and Temperature Conditions

Mahmoud¹,

Ghaly²,

Brooks³

2007

American J. of Environmental Sciences

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“…Bu bağlamda, tekstil atıksularının karakterizasyonu boyaların kimyasal yapısındaki farklılıklardan ve boyama prosesinin değişim göstermesinden dolayı oldukça zordur [3,4]. Tekstil atıksuları yüksek KOİ, düşük biyolojik bozunabilirlik, yüksek tuz içeriği ve renkle ilgili olan estetik kirliliğin kaynağıdır [5,6]. Reaktif tekstil boyaları tekstil endüstrisinde yaygın olarak kullanılmakta olup, temelde reaktif gruplarının kovalent bağ oluşumuyla tekstil liflerine bağlanma kabiliyetleri ile ilişkilidir.…”

Section: Introductionunclassified

The Investigation of the Removal of Reactive Orange 16 DYE From Textile Wastewater by Using Electrocoagulation Process

Karagözoğlu¹,

Malkoç²

2017

Cumhuriyet Science Journal

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Özet: Bu çalışmada tekstil atıksularının Al ve Fe elektrotları kullanılarak elektrokoagülasyon ile arıtımı amaçlanmıştır. Çalışmada elektrokoagülasyon ile Remazol Brilliant Orange 3R Spec Gran (Reactive Orange 16) reaktif tekstil boyası çözeltilerinden, renk, kimyasal oksijen ihtiyacı (KOI) ve bulanıklık giderimi incelenmiştir. Bu amaçla monopolar paralel bağlı alüminyum ve demir elektrotların kullanıldığı bir elektrokimyasal reaktörde, pH, akım yoğunluğu, iletkenlik ve işletme süresinin, proses performansı üzerine etkileri araştırılmıştır. Ayrıca enerji ve elektrot tüketimine bağlı olarak işletme maliyeti hesaplanmıştır. Çalışma sonucunda, alüminyum elektrot ile elektrokoagülasyon prosesinde optimum şartlar; pH:6, akım yoğunluğu 100A/m 2 , iletkenlik 500 µS/cm ve işletme süresi 20 dakika olarak belirlenmiştir. Bu şartlarda %79,5 renk, %60,2 KOİ ve %91,9 bulanıklık giderme verimi elde edilmiştir. Demir elektrot için optimum deney şartları ise; pH:8, akım yoğunluğu 75 A/m 2 , iletkenlik 1000 µS/cm ve işletme süresi 20 dakika olarak belirlenmiş, bu şartlarda %99,07 renk, %42,26 KOİ ve %91,89 bulanıklık giderme verimi elde edilmiştir. Alüminyum ve demir elektrotlar için işletme maliyeti sırasıyla 1,489 $/m 3 ve 0,504 $/m 3 olarak hesaplanmıştır.Anahtar Kelimeler: Elektrokoagülasyon, elektrot, reaktif tekstil boyası, KOI, bulanıklık The Investigation of the Removal of Reactive Orange 16 DYE From Textile Wastewater by Using Electrocoagulation ProcessAbstract: Treatment of textile wastewater by electrocoagulation using Al and Fe electrodes was aimed in this study. Removal of color, chemical oxygen demand (COD) and turbidity from Remazol Brilliant Orange 3R Spec Gran (Reactive Orange 16) reactive textile dyestuff solutions was investigated in the study. For this purpose, effects of pH, current density, conductivity and operating time on process performance have been researched in an electrochemical reactor in which parallel connected monopolar aluminum and iron electrodes were used. Furthermore, operating costs depending on energy and electrode consumption were calculated. Optimum conditions for electrocoagulation process using aluminum electrode have been determined to be pH:6, current density:100A/m2, conductivity:500µS/cm and operating time:20min. 79,5% color, 60,2% COD and 91,9% turbidity removal efficiencies were obtained under these conditions. Optimum experimental conditions, for the iron electrode, have been determined to be pH:8, current density:75A/m2, conductivity:1000µS/cm and operating time:20min which resulted in 99,07% color, 42,26% COD and 91,89% turbidity removal efficiencies. Operational costs for aluminum and iron electrodes were calculated to be 1,489$/m3 and 0,504 $/m3 respectively.

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“…Therefore, it is an important way to promote the photo catalysis efficiency by decreasing the recombination rate. ZnO with higher Photo catalytic efficiency than TiO 2 holds the drawback of photo corrosion effect during light irradiation and causes the decrease in Photocatalytic activity and stability [11]. Conventional treatment of such wastewater generally involves coagulation/ flocculation [12,13] electro-coagulation [14], coagulation/carbon adsorption process [15] and so on.…”

Section: Introductionmentioning

confidence: 99%

ZnO<sub></sub>/VNC Material for UV-Photodegradation of Methylene Blue

Arunkumar

Chandrasekaran

Ahamed

2016

ILCPA

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ABSTRACT. ZnO materials act as a Photocatalytic reaction and it leads to partial or complete mineralization or decolorization of organic pollutants. Upon irradiation with UV/visible light, semiconductors catalyze undergoes redox reactions in presence of air/O 2 and water. In the present study Zinc oxide (ZnO) was doped with activated carbon prepared from the stem of the plant material by chemical activation namely, Vitex negundo stem carbon (VNC). The decolourisation and degradation study of a dye namely, methylene blue (MB) was carried out to find out the efficiency of catalytic property of ZnO/VNC. The reaction was performed at 20, 40, 60 ppm solute ZnO/VNC ion at 10 min interval of time. It found that the prepared ZnO / VNC composite exhibits an enhanced Photocatalytic activity for MB degradation under visible light irradiation and its photo catalysis efficiency was analyzed in specific 663 nm λ max using a UV-vis-spectrophotometer. The surface morphology and functional group present in the ZnO/VNC material was characterized by using FT-IR, SEM and XRD. The result reveals that the ZnO/VNC structure consists of irregular aggregates with rough surfaces and high photodegradation activities of ZnO/VNC on MB solutions are found to be at 20ppm. The ZnO/VNC may be used as an alternative adsorbent to remove MB from aqueous solutions.

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Electro-coagulation of reactive textile dyes and textile wastewater

Cited by 314 publications

References 26 publications

Removal of Dye from Textile Wastewater Using Plant Oils Under Different pH and Temperature Conditions

Removal of Dye from Textile Wastewater Using Plant Oils Under Different pH and Temperature Conditions

The Investigation of the Removal of Reactive Orange 16 DYE From Textile Wastewater by Using Electrocoagulation Process

ZnO<sub></sub>/VNC Material for UV-Photodegradation of Methylene Blue

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