Optimization and toxicity assessment of a combined electrocoagulation, H2O2/Fe2+/UV and activated carbon adsorption for textile wastewater treatment

GilPavas, Edison; Dobrosz-Gómez, Izabela; García, Miguel A.

doi:10.1016/j.scitotenv.2018.09.125

Cited by 152 publications

(33 citation statements)

References 41 publications

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“…Another advantage of the combined process is that ozone dose requirement can be reduced significantly (from 1.69 g/L to 0.3 g/L). Gilpavas et al (2019) explored industrial textile wastewater treatment using multi-step treatment processes consisting of electrocoagulation + Fenton (F) or photo-Fenton (PF) + active carbon adsorption (EC + F/PF + AC) processes. The results indicated EC + F/PF processes were more efficient than EC alone in terms of removing low molecular weight (<5 kDa) compounds from wastewater.…”

Section: Sonicationmentioning

confidence: 99%

Textiles wastewater treatment technology: A review

Deng

Lamssali

Aryal

et al. 2020

Water Environment Research

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The following is a review of published literature on textile wastewater in 2019. Presented are the sections described for the review: concise introduction on the textiles wastewater, followed by a review of present textile treatment technologies organized by physicochemical, biological, and combined processes. Lastly, a discussion of the future topics is presented. © 2020 Water Environment Federation • Practitioner points • The discharge of textile dye wastewater represents a serious environmental problem and public health concern. • Effluents from textile manufacturing, dyeing, and finishing processes contain highconcentration recalcitrant chemicals that are resistant to biodegradation. • The textile wastewater needs environmental-friendly and cost-effective combined treatment process.

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Section: Sonicationmentioning

confidence: 99%

Textiles wastewater treatment technology: A review

Deng

Lamssali

Aryal

et al. 2020

Water Environment Research

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“…From previous research it has been confirmed that physico-chemical processes (e. g., coagulation/flocculation, precipitation, adsorption, ion exchange, membrane separation and oxidation) is not effective for complete remediation [6] and biological methods are inefficient especially if the pollutants are present in high concentrations [7]. Recently, electrochemical technologies and Advanced Oxidation Processes (AOPs) (such as Fenton, Photo-Fenton process) have been considered as efficient alternatives for textile wastewater treatment [8], [9]. Advanced oxidation processes (AOPs) show promising results in treating highly polluted wastewater [10].…”

Section: Introductionmentioning

confidence: 99%

Integrated Performance of Fenton Process and Filtration (Activated Charcoal and Sand) for Textile Wastewater Treatment

Hossain¹,

Sarker

Rahaman

et al. 2020

CJAST

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Textile effluents contain complex characteristics with different physicochemical parameters and colorful dye. It is difficult to remove all types of pollutant using a specific treatment process. In this study adsorption filtration alone then Fenton process with sand-gravel mixed filtration and activated charcoal filtration was applied. Fenton process is very effective process for Chemical Oxygen Demand (COD) and Dissolve Organic Carbon (DOC) removal. And Activated carbon is a suitable adsorbent for dye removal. Physicochemical parameters like, COD, DOC, Total Dissolve Solid (TDS), Dissolve Oxygen (DO), Electric conductivity (EC), and pH was measured before and after the treatment process. After filtration by adsorbent filter all the parameter reduced than raw effluent but when Fenton process with sand filtration and activated charcoal filtration was applied all the parameter drastically changed than before. DO level was increased after only adsorption filtration process, Fenton and normal sand filtration process, Fenton, and adsorbent filtration process as 1.8 mg/l< 5 mg/l < 6.19 mg/l < 6 mg/l, respectively. Maximum level of EC (61.33%), TDS (82.75%), BOD (92%), COD (80%), DOC (97.57%), and color (78.57%) was decrease after using Fenton process with Activated carbon filtration process than other treatment process, which was within Bangladesh standard value. This result represents the advantage of using Fenton process with adsorption filtration to treat textile effluent. Moreover, this process is easily operating, practical and environment friendly for using in industrial scale.

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“…Previous studies have investigated the oxidation of As(III) by UV/H 2 O 2 [21][22][23][24][25], and the removal of arsenic using EC [6,15,[26][27][28][29][30] and ECP [31,32]. Meanwhile, a limited number of papers have explored the PECP process mainly for the treatment of organics via •OH formation [33][34][35][36][37]. Elucidation of the role of electrogenerated oxidants on the removal of As(III) can allow identifying enhanced removal treatments, as well as understanding the fundamental mechanisms of the kinetic process.…”

Section: Introductionmentioning

confidence: 99%

Arsenic Removal by Advanced Electrocoagulation Processes: The Role of Oxidants Generated and Kinetic Modeling

et al. 2020

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Arsenic (As) is a naturally occurring element in the environment that poses significant risks to human health. Several treatment technologies have been successfully used in the treatment of As-contaminated waters. However, limited literature has explored advanced electrocoagulation (EC) processes for As removal. The present study evaluates the As removal performance of electrocoagulation, electrochemical peroxidation (ECP), and photo-assisted electrochemical peroxidation (PECP) technologies at circumneutral pH using electroactive iron electrodes. The influence of As speciation and the role of oxidants in As removal were investigated. We have identified the ECP process to be a promising alternative for the conventional EC with around 4-fold increase in arsenic removal capacity at a competitive cost of 0.0060 $/m3. Results also indicated that the rate of As(III) oxidation at the outset of electrochemical treatment dictates the extent of As removal. Both ECP and PECP processes reached greater than 96% As(III) conversion at 1 C/L and achieved 86% and 96% As removal at 5 C/L, respectively. Finally, the mechanism of As(III) oxidation was evaluated, and results showed that Fe(IV) is the intermediate oxidant generated in advanced EC processes, and the contribution of •OH brought by UV irradiation is insignificant.

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Optimization and toxicity assessment of a combined electrocoagulation, H2O2/Fe2+/UV and activated carbon adsorption for textile wastewater treatment

Cited by 152 publications

References 41 publications

Textiles wastewater treatment technology: A review

Textiles wastewater treatment technology: A review

Integrated Performance of Fenton Process and Filtration (Activated Charcoal and Sand) for Textile Wastewater Treatment

Arsenic Removal by Advanced Electrocoagulation Processes: The Role of Oxidants Generated and Kinetic Modeling

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