Decolourisation of simulated reactive dyebath effluents by electrochemical oxidation assisted by UV light

López‐Grimau, Víctor; Gutiérrez, M.C.

doi:10.1016/j.chemosphere.2005.03.076

Cited by 151 publications

(78 citation statements)

References 21 publications

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“…Hydrogen peroxide can be further oxidized to oxygen either by its direct discharge on the electrode surface (Equation 19) or via assistance of hydroxyl radicals (Equation 20):…”

Section: Concentration Profile Of Homentioning

confidence: 99%

Electrocatalysis in wastewater treatment: recent mechanism advances

Martínez‐Huitle¹,

Andrade²

2011

Quím. Nova

109

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Recebido em 23/9/10; aceito em 4/12/10; publicado na web em 25/3/11Over 50 years, several scientists and industries have developed new alternatives for wastewater treatment and remediation. Recently, electrochemical technology has been largely developed mainly because of its versatility and environmental compatibility. Scientific contributions about role of the electrode material have allowed determining that the influence of material in the selectivity is an important parameter. However, to interpret this behavior, comprehensive physical chemistry models for organics destruction, related to electrochemical phenomena and material surfaces, were proposed in the last decades. So, this paper presents a critical and comprehensive review about the principles and recent mechanism advances in electrocatalysis for wastewater treatment.

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“…Hydrogen peroxide can be further oxidized to oxygen either by its direct discharge on the electrode surface (Equation 19) or via assistance of hydroxyl radicals (Equation 20):…”

Section: Concentration Profile Of Homentioning

confidence: 99%

Electrocatalysis in wastewater treatment: recent mechanism advances

Martínez‐Huitle¹,

Andrade²

2011

Quím. Nova

109

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“…There are many processes available for removal of color from waste effluents, namely chemical oxidation (McClung and Lemley 1994), foam flotation (Lin and Lo 1996), electrolysis (Bousher et al 1997), biodegradation (Oakes and Gratton 1998), adsorption (Poulios and Aetopoulou 1999;Ncibi et al 2007), chemical coagulation (Papic et al 2000) and photocatalysis (Lopez-Grimau and Gutierrez 2006;Divya et al 2013). However, adsorption onto activated carbon seems to be one of the effective and reliable physicochemical treatment methods (Pala and Tokat 2002;Mall et al 2005) and due to economical and environmentally friendly reasons (Toor and Jin 2012).…”

Section: Introductionmentioning

confidence: 99%

Application of response surface methodology (RSM) for optimization of color removal from POME by granular activated carbon

Al-Khatib

Mamun

Akbar

2014

Int. J. Environ. Sci. Technol.

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Color is one of the major remaining contaminants in the palm oil mill effluent (POME) following the conventional treatment of POME. The removal of color from POME using adsorption on activated carbon was investigated. The adsorption experimental design was performed using the standard response surface method (RSM) design that is central composite design to determine the optimum process variables for color removal by using the Design-Expert software (version 7.0. Stat-Ease, trial version). Besides obtaining optimum values, RSM also has the advantage of studying the interaction between various experimental parameters compared to one-factor-at-a-time. The equilibrium experimental data were analyzed by Langmuir and Freundlich isotherms. The statistical analysis showed that the quadratic model as well as the model terms was significant. The model had very low probability value (0.0003). The R 2 for the model was 0.9184 and the adjusted R 2 was 0.8380. The validation of the model showed experimental value and predicted value of 0.124 and 0.106, respectively. The optimum conditions suggested by the model for the process variable were 87.9 min, 4.05 and 7.86 g, for time, pH and granular activated carbon dose, respectively. The maximum removal obtained at these conditions was 89.95 %. The adsorption isotherm data were fitted well to the Langmuir isotherm compared to Freundlich isotherm with R 2 value of 0.850 for the former and 0.273 for the later.

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“…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%

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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Decolourisation of simulated reactive dyebath effluents by electrochemical oxidation assisted by UV light

Cited by 151 publications

References 21 publications

Electrocatalysis in wastewater treatment: recent mechanism advances

Electrocatalysis in wastewater treatment: recent mechanism advances

Application of response surface methodology (RSM) for optimization of color removal from POME by granular activated carbon

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

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