Effect of halides in the electrochemical treatment of distillery effluent

Manisankar, P.; Rani, C. Nirmala; Subramanian, Venkataraman

doi:10.1016/j.chemosphere.2004.07.026

Cited by 84 publications

(48 citation statements)

References 3 publications

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“…In former studies different electrolytes were investigated for electrochemical treatment of textile dyes and wastewater [15,16]. In the present work, however, NaCl was employed as the sole electrolyte, due to the fact that our preliminary studies indicated that during electrocoagulation using Al and SS electrodes in the presence of Na 2 SO 4 electrolyte, color as well as COD abatement rates were seriously retarded.…”

Section: Analytical Proceduresmentioning

confidence: 99%

Effect of Operating Parameters on the Electrocoagulation of Simulated Acid Dyebath Effluent

Arslan-Alaton¹,

Kabdaşlı²,

Şahin³

2008

TOEBMJ

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Abstract:The present study investigates the influence of operating parameters (electrolyte concentration, applied electrical current, initial reaction pH) on color and COD removals from a simulated acid dyebath effluent employing electrocoagulation with aluminum (Al) and stainless steel (SS) electrodes. Our results indicated that almost complete (100% for EC with SS electrodes) color and partial (around 50% for EC with SS electrodes) COD removal could be achieved via electrocoagulation using Al as well as SS electrodes once working conditions were optimized. The study also revealed that electrocoagulation with SS electrodes was more attractive both in terms of treatment performance as well as electrical energy and sludge handling costs; the electrical energy requirement and sludge production rate were 17 kWh/(m 3 wastewater) and 8200 g/(m 3 wastewater) for electrocoagulation with Al electrodes, instead of 8 kWh/(m 3 wastewater) and 700 g/(m 3 wastewater) for electrocoagulation with SS electrodes to achieve the same treatment efficiency.

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Section: Analytical Proceduresmentioning

confidence: 99%

Effect of Operating Parameters on the Electrocoagulation of Simulated Acid Dyebath Effluent

Arslan-Alaton¹,

Kabdaşlı²,

Şahin³

2008

TOEBMJ

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“…1(b) that pH of the spent wash had a significant effect on the COD removal efficiency. For pH <6, the protons in the solution get reduced to H 2 and thus, the proportion of hydroxide ion produced is less and as a result less COD removal efficiency obtained at low pH [13]. The COD removal efficiency of Al-Al electrodes is higher as compared to Fe-Fe electrodes because the Fe (II) ions generated during the EC process from iron electrodes has high solubility at acidic conditions and are easily oxidized into Fe (III) [5], [18].…”

Section: A Effect Of Ph Of the Solutionmentioning

confidence: 99%

“…The electrocoagulation treatment is an emerging technology used for the destruction of recalcitrant organics from different synthetic wastewaters [8]- [10] as well as industrial wastewaters [11], [12]. Electrocoagulation (EC) is a simple and efficient method and has been used for the treatment of many types of wastewaters [2], [5], [7], [13], [14]- [16]. Treatment of distillery spent wash has been reported by various authors and summarized in Table I.…”

Section: Introductionmentioning

confidence: 99%

Treatment of Distillery Spentwash by Electrocoagulation

Khandegar¹,

Saroh²

2014

JOCET

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Abstract-Effluent from distilleries, known as spent wash, leads to extensive soil and water pollution. Removal of pollutants and color from distillery effluent is becoming increasingly important from environmental and aesthetic point of view. Effluent from distilleries contains certain recalcitrant compounds. In the present work effort were made to reduce chemical oxygen demand (COD) from distillery effluent by electrocoagulation. The maximum COD removal efficiency of 98% was obtained at solution pH of 7.2 with a current density 17.9 mA/cm 2 for electrolysis duration of 3 h. Further experiments were performed using aluminum sulphate as chemical coagulant to compare the COD removal efficiencies obtained by electrocoagulation and chemical coagulation.

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“…The amount of inorganic substances such as nitrogen, potassium, phosphates, calcium, and sulfate is also very high (Table 2) (Melamane et al, 2007). Spent wash contains about 2% melanoidin which has an empirical formula of C 17 -18H 26 -27O 10 N and molecular weight between 5000 and 40,000 Da (Martin et al 2002;Manisankar et al 2004). These compounds have antioxidant properties, which render them toxic to many microorganisms such as those typically present in wastewater treatment processes (Kumar et al 1997).…”

Section: Characteristics Of Wastewater Generated During Manufacturingmentioning

confidence: 99%