Assessing textile wastewater treatment in an anoxic-aerobic photobioreactor and the potential of the treated water for irrigation

Dhaouefi, Zaineb; Toledo-Cervantes, Alma; García, Dimas; Boutarfaïa, Ahmed; Ghédira, Kamel; Chekir‐Ghedira, Leila; Muñoz, Raúl

doi:10.1016/j.algal.2017.11.032

Cited by 49 publications

(28 citation statements)

References 42 publications

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“…Results showed that the system is suitable for textile wastewater treatment, and a higher reduction efficiency of dyes and COD can be achieved within the system without co-substrate. Dhaouefi et al (2018) examined the suitability of using an anoxic/aerobic photobioreactor for carbon and nutrient removal from synthetic textile wastewater. The mixture of synthetic wastewater contained soaping agent, anticrease, dispersing agent, electrolyte, alkaline agent, reducing agent, acid generation, as well as the dyes disperse blue 1 and disperse orange 3.…”

Section: Constituents Treated By Other Biological Systemsmentioning

confidence: 99%

Textile dye wastewater characteristics and constituents of synthetic effluents: a critical review

Yaseen

Scholz

2018

Int. J. Environ. Sci. Technol.

1,314

416

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Textile industries are responsible for one of the major environmental pollution problems in the world, because they release undesirable dye effluents. Textile wastewater contains dyes mixed with various contaminants at a variety of ranges. Therefore, environmental legislation commonly obligates textile factories to treat these effluents before discharge into the receiving watercourses. The treatment efficiency of any pilot-scale study can be examined by feeding the system either with real textile effluents or with artificial wastewater having characteristics, which match typical textile factory discharges. This paper presents a critical review of the currently available literature regarding typical and real characteristics of the textile effluents, and also constituents including chemicals used for preparing simulated textile wastewater containing dye, as well as the treatments applied for treating the prepared effluents. This review collects the scattered information relating to artificial textile wastewater constituents and organises it to help researchers who are required to prepare synthetic wastewater. These ingredients are also evaluated based on the typical characteristics of textile wastewater, and special constituents to simulate these characteristics are recommended. The processes carried out during textile manufacturing and the chemicals corresponding to each process are also discussed.

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Section: Constituents Treated By Other Biological Systemsmentioning

confidence: 99%

Textile dye wastewater characteristics and constituents of synthetic effluents: a critical review

Yaseen

Scholz

2018

Int. J. Environ. Sci. Technol.

1,314

416

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“…The same was observed for the study of Przystaś et al (2018), but with opposite results. In addition to these observations, phytotoxicity analysis of wastewater treated only by biological methods, most of the times showed about 50% or less in toxicity reduction, while when biological treatments are combined with other treatments, the toxicity reduction increase (Dhaouefi et al, 2018;Waghmode et al, 2019). Yu et al (2019) studied the correlation between the toxicity reduction of 12 wastewater treatment plants, from an industrial park, with the treatment process.…”

Section: Importance Of Toxicity Assessmentmentioning

confidence: 99%

“…This can modify the penetration of sunlight into water bodies and change solubility of atmospheric gases, altering photosynthesis and therefore the entire aquatic ecosystem ( O’Neill et al, 1999 ; Saratale et al, 2011 ; Gonçalves et al, 2017 ; Rather et al, 2018 ). In addition, the toxic, mutagenic and carcinogenic effect of several compounds present in the effluents, such as dyes, have been demonstrated ( Saratale et al, 2011 ; Dhaouefi et al, 2018 ). Moreover, withdrawal of heavy metals by some chemicals used as mordents, eventually increases wastewater toxicity ( Dhaouefi et al, 2018 ).…”

Section: Introductionmentioning

confidence: 99%

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Current Trends on Role of Biological Treatment in Integrated Treatment Technologies of Textile Wastewater

2021

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Wastewater discharge is a matter of concern as it is the primary source of water pollution. Consequently, wastewater treatment plays a key role in reducing the negative impact that wastewater discharge produce into the environment. Particularly, the effluents produced by textile industry are composed of high concentration of hazardous compounds such as dyes, as well as having high levels of chemical and biological oxygen demand, suspended solids, variable pH, and high concentration of salt. Main efforts have been focused on the development of methods consuming less water or reusing it, and also on the development of dyes with a better fixation capacity. However, the problem of how to treat these harmful effluents is still pending. Different treatment technologies have been developed, such as coagulation-flocculation, adsorption, membrane filtration, reverse osmosis, advanced oxidation, and biological processes (activated sludge, anaerobic-aerobic treatment, and membrane bioreactor). Concerning to biological treatments, even though they are considered as the most environmentally friendly and economic methods, their industrial application is still uncertain. On the one hand, this is due to the costs of treatment plants installation and, on the other, to the fact that most of the studies are carried out with simulated or diluted effluents that do not represent what really happens in the industries. Integrated treatment technologies by combining the efficiency two or more methodologies used to be more efficient for the decontamination of textile wastewater, than treatments used separately. The elimination of hazardous compounds had been reported using combination of physical, chemical, and biological processes. On this way, as degradation products can sometimes be even more toxic than the parent compounds, effluent toxicity assessment is an essential feature in the development of these alternatives. This article provides a critical view on the state of art of biological treatment, the degree of advancement and the prospects for their application, also discussing the concept of integrated treatment and the importance of including toxicity assays to reach an integral approach to wastewater treatment.

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“…It has also been observed that approximately 10–15% of the dyes used in the textile industry enter into the environment as waste (Inoue et al , 2006). Characterized by high Chemical Oxidation Demand (COD; 0.55–1.71 g/L), Total Organic Carbon (TOC; 0.14–0.29 g/L), Biological Oxygen Demand (BOD; 0.09–0.41 g/L), Total suspended solids (TSS; 0.1–0.13 g/L), Total dissolved solids (TDS; 3.7–3.9 g/L), pH (6–11) and colour content (50–2500), these textile effluents have toxic and mutagenic on human health and aquatic ecosystems (Asghar et al , 2015; Dhaouefi et al , 2018; Pazdzior et al , 2018). Therefore, on average 90% of the water used in textile operations needs an end‐of‐pipe treatment (Silva et al , 2018).…”

Section: Introductionmentioning

confidence: 99%

Low frequency ultrasonic‐assisted Fenton oxidation of textile wastewater: process optimization and electrical energy evaluation

Asghar

Ramzan²,

Jamal³

et al. 2019

Water & Environment J

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Worldwide, there is a continuous need to develop alternative treatment methods to replace conventional processes for textile wastewater. In this regard, Fenton oxidation, with the potential of hydroxyl radical production, is an efficient method. Nevertheless, pH dependence, high chemical consumption and sludge production are a few aspects that limit its wide application. Therefore, to overcome these limits, integration of Fenton oxidation with other advanced oxidation processes is considered a viable option. Therefore, in this study, Ultrasonic-assisted Fenton oxidation was investigated to observe the increase in degradation efficiency of Fenton oxidation. For this purpose, low frequency ultrasonic water bath was used and malachite green dye was used as a model pollutant. Central composite design was used for experimental design, and [OP] ini , OP:Fe +2 (wt/wt), H 2 O 2 :Fe +2 (wt/wt) and pH were used as control factors. Based on experimental results, maximum of 97.5% Chemical Oxidation Demand (COD) reduction was obtained at the process conditions of [OP] ini : 100 mg/L, OP:Fe +2 : 50, H 2 O 2 :Fe +2 : 1.5 and pH:3. Furthermore, 10 times reduction in the consumption of hydrogen peroxide was obtained. According to Pareto analysis, organic pollutant (OP) in interaction with OP is the most significant while pH was identified as the least. The process followed pseudo-first order kinetics (k = 0.0196 min −1) with electrical energy order of 26.21 kWh/m 3 and the maximum energy consumption per COD removal of 0.8 kJ/COD, lower than those available in the literature. The results suggested that US-assisted Fenton oxidation could be considered as an efficient method for treating the recalcitrant wastewater.

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Assessing textile wastewater treatment in an anoxic-aerobic photobioreactor and the potential of the treated water for irrigation

Cited by 49 publications

References 42 publications

Textile dye wastewater characteristics and constituents of synthetic effluents: a critical review

Textile dye wastewater characteristics and constituents of synthetic effluents: a critical review

Current Trends on Role of Biological Treatment in Integrated Treatment Technologies of Textile Wastewater

Low frequency ultrasonic‐assisted Fenton oxidation of textile wastewater: process optimization and electrical energy evaluation

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