Evaluation of textile wastewater treatment in sequential anaerobic moving bed bioreactor - aerobic membrane bioreactor

Kozak, Melike; Cırık, Kevser; Dolaz, Mustafa; Başak, Serden

doi:10.1016/j.procbio.2021.03.013

Cited by 23 publications

(5 citation statements)

References 44 publications

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“…The relative abundance of Anaerolineae also enriched from 2.2% to 5.2%, which was regarded as the typical denitrification bacteria and can potentially explain the improved TN removal in BMBR [ 60 ]. Additionally, Alphaproteobacteria , which closely relate to membrane fouling [ 61 ], was more abundant in CMBR than BMBR, and indicated more severe membrane fouling in CMBR than BMBR.…”

Section: Resultsmentioning

confidence: 99%

Biochar Addition in Membrane Bioreactor Enables Membrane Fouling Alleviation and Nitrogen Removal Improvement for Low C/N Municipal Wastewater Treatment

Wang

Shen

et al. 2023

Membranes

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Membrane bioreactors (MBRs) are frequently used to treat municipal wastewater, but membrane fouling is still the main weakness of this technology. Additionally, the low carbon-nitrogen (C/N) ratio influent has been shown to not only increase the membrane fouling, but also introduce challenges to meet the effluent discharge standard for nitrogen removal. Herein, the authors addressed the challenges by adding cost-effective biochar. The results suggested that the biochar addition can enable membrane fouling alleviation and nitrogen removal improvement. The reduced membrane fouling can be ascribed to the biochar adsorption capacity, which facilitates to form bigger flocs with carbon skeleton in biochar as a core. As a result, the biochar addition significantly altered the mixed liquor suspension with soluble microbial product (SMP) concentration reduction of approximately 14%, lower SMP protein/polysaccharide ratio from 0.28 ± 0.02 to 0.22 ± 0.03, smaller SMP molecular weight and bigger sludge particle size from 67.68 ± 6.9 μm to 113.47 ± 4.8 μm. The nitrogen removal is also dramatically improved after biochar addition, which can be due to the initial carbon source release from biochar, and formation of aerobic–anaerobic microstructures. Microbial diversity analysis results suggested more accumulation of denitrification microbes including norank_f__JG30-KF-CM45 and Plasticicumulans. Less relative abundance of Aeromonas after biochar addition suggested less extracellular polymer substance (EPS) secretion and lower membrane fouling rate.

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Section: Resultsmentioning

confidence: 99%

Biochar Addition in Membrane Bioreactor Enables Membrane Fouling Alleviation and Nitrogen Removal Improvement for Low C/N Municipal Wastewater Treatment

Wang

Shen

et al. 2023

Membranes

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“…Table 2 shows the reported physicochemical characteristic of actual textile effluent in different textile industries worldwide. Literature reported that the high chemical oxygen demand (COD), biochemical oxygen demand (BOD), TDS, and color of textile effluent were due to the presence of a large number of chemicals, salts, starch, fabric residue, and complex dyes [64][65][66]. Moreover, the effluent also has high pH and temperature.…”

Section: Effluent Characteristicsmentioning

confidence: 99%

Phycoremediation of Synthetic Dyes Laden Textile Wastewater and Recovery of Bio-Based Pigments from Residual Biomass: An Approach towards Sustainable Wastewater Management

et al. 2023

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The textile industry is a growing sector worldwide and has immense opportunity in terms of providing employment and boosting a nation’s economy. However, there exist severe environmental risks associated with textile effluents that impact the surrounding ecosystem. This review offers an approach for sustainable water management using phycoremediation to treat dye-laden wastewater and recover bio-based pigments from the residual biomass. Microalgae such as Chlorella, Scenedesmus, Phormidium, and macroalgae like Sargassum, Enteromorpha, and Codium has been extensively used in several phycoremediation-based studies, and their residual biomass could be a potent source for extraction of bio-based pigments. This review also recommends studies involving the algal-bacterial consortia approach for treating dye-laden wastewater as an alternative to conventional, biobased methods. The outcome of this study will provide policymakers and researchers with new insight to manage water and wastewater resources sustainably. Furthermore, this review also enhances our understanding of nature-based decontamination approaches for treating dye-laden wastewater through algal-based technologies.

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“…Despite its undeniable importance, it is also known for generating highly polluting wastewaters (Desore and Narula 2018; Moyo et al 2022). Textile wastewater contains large amounts of chemicals in the form of dyes, salts, alkalis, surfactants, and pigments, resulting in aqueous streams with high pH, COD and color values (Kozak et al 2021). Besides, large quantities of water are required for textile processing, especially in the dyeing step, where between 30-50 liters of water are required per kg of yarn (Kant 2012).…”

Section: Introductionmentioning

confidence: 99%

Effects of solid retention time and exposure mode to electric current on Remazol Brilliant Violet removal in an electro-membrane bioreactor

Belli

Bassin

Vidal

et al. 2023

Environ Sci Pollut Res

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The performance of an anoxic-oxic membrane bioreactor electrochemically assisted (A/O-eMBR) was assessed as an alternative for azo dye (Remazol Brilhant Violet -RBV) removal from textile wastewater. The A/O-eMBR was operated under three experimental conditions (runs I, II and III), in which different solids retention time (SRT) (45 and 20 d) and exposure mode to electric current (6´ON/30´OFF and 6 ´ON/12´OFF) were assessed. The reactor exhibited excellent performance on the decolorization process for all experimental conditions, with average dye removal e ciency ranging from 94.3 to 98.2%. Activity batch assays showed that the dye removal rate (DRR) decreased from 16.8 to 10.2 mg RBV L − 1 h − 1 when the SRT was reduced from 45 to 20 d. a behavior attributed to the lower biomass content under these conditions. When the exposure mode was 6 ON´/ 12´OFF, a more substantial decrease of DRR to 1.5 mg RBV L − 1 h − 1 was noticed, suggesting a possible inhibitory effect on dye removal via biodegradation. By reducing the SRT to 20 d, a worse mixed liquor lterability condition was observed, with a membrane fouling rate (MFR) of 0.979 kPa d − 1 . In contrast, the use of electric current to exposure mode of 6 ON´/ 12 ´OFF resulted in lower membrane fouling propensity, with a MFR of 0.333 kPa d − 1 . A more attractive costbene t ratio in terms of dye removal was obtained by using the exposure mode of 6´ON/30´OFF, for which the energy demand was estimated at 21.9-22.6 kWh kg dye − 1 removed , 92-99% lower than that observed for the mode of 6´ON/12´OFF.

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Evaluation of textile wastewater treatment in sequential anaerobic moving bed bioreactor - aerobic membrane bioreactor

Cited by 23 publications

References 44 publications

Biochar Addition in Membrane Bioreactor Enables Membrane Fouling Alleviation and Nitrogen Removal Improvement for Low C/N Municipal Wastewater Treatment

Biochar Addition in Membrane Bioreactor Enables Membrane Fouling Alleviation and Nitrogen Removal Improvement for Low C/N Municipal Wastewater Treatment

Phycoremediation of Synthetic Dyes Laden Textile Wastewater and Recovery of Bio-Based Pigments from Residual Biomass: An Approach towards Sustainable Wastewater Management

Effects of solid retention time and exposure mode to electric current on Remazol Brilliant Violet removal in an electro-membrane bioreactor

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