Electrochemical treatment of industrial wastewater and effluent reuse at laboratory and semi-industrial scale

Sala, Mireia; Gutiérrez‐Bouzán, Carmen

doi:10.1016/j.jclepro.2013.08.006

Cited by 47 publications

(15 citation statements)

References 28 publications

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“…Šrámková et al [39] verified that wastewater with turbidity, color or organic load similar to this work can be used for irrigation or cooling of industrial systems. Sala and Gutiérrez-Bouzán [40] noted that reclaimed water with organic loads similar to this study did not cause changes when used in the tannery process, making it possible to reduce by up to 70% the water consumption in this type of industry with reuse techniques. Compared with the results observed by Moazzem et al [33] the reclaimed water of this study can be utilized for car washing.…”

Section: Options For Reusesupporting

confidence: 65%

“…The analysis of the possibility of reuse was performed by comparing the wastewater parameters with the reuse standards suggested by the USA Environmental Protection Agency [37], and with the literature applied for different situations [19,33,39,40]. Table 3 presents the results obtained in the central composite design (CCD) experiments as a function of the studied variables.…”

Section: Options For Reusementioning

confidence: 99%

See 1 more Smart Citation

Electrocoagulation coupled adsorption for anaerobic wastewater post-treatment and reuse purposes

Pizutti¹,

Santos²,

Hemkemeier³

et al. 2019

Desalination and Water Treatment

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Water reuse is an indispensable reality in the search for an equilibrium between water resources and water scarcity. The recovery and production of reclaimed water with a guarantee of safety of use requires advanced treatment technologies. This study proposes a conjugated system, composed of electrocoagulation followed by adsorption, for the post-treatment of UASB effluent for reuse purposes. For this purpose, initially the electrocoagulation process (EC) was optimized using response surface methodology. The optimum conditions were for a current density of 29.44 A/m 2 and pH 6.0, with 44.58% of COD removal and energy consumption of 31.1 kWh per kg of COD removed. The EC effluent was treated by adsorption on a fixed bed column of activated carbon. The conjugated system provided the complete removal of COD and BOD, and significant removals of turbidity (96.5%), phosphorus (97.5%) and total and thermotolerant coliforms. The quality of the final treated water reached parameters for reuse according to EPA.

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Section: Options For Reusesupporting

confidence: 65%

Section: Options For Reusementioning

confidence: 99%

Electrocoagulation coupled adsorption for anaerobic wastewater post-treatment and reuse purposes

Pizutti¹,

Santos²,

Hemkemeier³

et al. 2019

Desalination and Water Treatment

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“…Advanced oxidation treatments such as photo-fenton [9], photocatalytic [10] and electrochemical [11] have been studied in order to improve the efficiency in colour removal. Good results were obtained although they were found to be quite expensive [2].…”

Section: Introductionmentioning

confidence: 99%

Reuse of textile wastewater after homogenization–decantation treatment coupled to PVDF ultrafiltration membranes

Buscio

Marín²,

Crespi

et al. 2015

Chemical Engineering Journal

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The textile industry is one of the largest consumers of water in the world and its wastewater is a serious problem when it is discharged without the proper treatment. In this work, wastewater generated by textile industry was treated coupling a homogenization-decantation treatment with polyvinylidene difluoride (PVDF) ultrafiltration membranes.Initially, the wastewater was aerated in a homogenization-decantation tank where 17% colour and 10% chemical oxygen demand (COD) were removed. The aerated effluent was treated with an ultrafiltration membrane in order to reuse the permeate in new dyeing processes. Firstly, the ultrafiltration treatment was performed in a laboratory plant. The permeate analysis showed 20% colour removal and 60% COD decrease.On the basis of these results, a semi-industrial system was built. With this plant, the permeate characterization showed similar results. The system was found to be scalable and suitable for the treatment of this kind of effluents.Finally, new dyeings were performed with both permeates. Monochromatic dyeings were carried out with 100% permeate whereas 50% permeate was reused for dyeings with a mixture of three dyes. The colour differences were found to be lower than 1.5, which was the acceptance value established.

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“…These methods are able to meet legislative requirements but they do not enable water reuse in textile processes (Barredo-Damas et al, 2010).Recently, there are an increasing number of studies based on industrial waste reuse (Huber et al, 2014;Sathishkumar et al, 2012) and on water reuse (Othman et al, 2014). In particular, advanced oxidation treatments have been applied to achieve the reuse textile wastewater (Li and He, 2013;Sala and Gutiérrez-Bouzán, 2014). …”

Section: Introductionmentioning

confidence: 99%

Sustainable dyeing of denim using indigo dye recovered with polyvinylidene difluoride ultrafiltration membranes

Buscio

Crespi

Gutiérrez‐Bouzán

2015

Journal of Cleaner Production

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Indigo is one of the most consumed dyes in the textile sector, as it is widely used for the dyeing of denim clothes. About 15% of indigo used in the dyeing process is discharged to the wastewater treatment plants or sometimes into rivers, in countries where regulations are not strictly applied.In this work, real effluents that contained indigo dye were treated by means of 4 different ultrafiltration membranes. The feasibility to recover the concentrated dye with lab and semi-industrial pilots was also investigated. The studied membranes achieved up to 99% colour removal and 80% chemical oxygen demand (COD) decrease. Finally, the concentrates containing 20 g·L -1 of indigo dye were reused in new dyeing processes. Colour differences (DE cmc ) and rubbing and washing fastnesses were evaluated. Fabrics dyed with the recovered indigo concentrates exhibited similar characteristics than the ones obtained with the commercial dye.

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Electrochemical treatment of industrial wastewater and effluent reuse at laboratory and semi-industrial scale

Cited by 47 publications

References 28 publications

Electrocoagulation coupled adsorption for anaerobic wastewater post-treatment and reuse purposes

Electrocoagulation coupled adsorption for anaerobic wastewater post-treatment and reuse purposes

Reuse of textile wastewater after homogenization–decantation treatment coupled to PVDF ultrafiltration membranes

Sustainable dyeing of denim using indigo dye recovered with polyvinylidene difluoride ultrafiltration membranes

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