Microaerated UASB reactor treating textile wastewater: The core microbiome and removal of azo dye Direct Black 22

Carvalho, J.R.S.; Amaral, Fernanda Magalhães; Florêncio, Lourdinha; Kato, Mário T.; Delforno, Tiago Palladino; Gavazza, Sávia

doi:10.1016/j.chemosphere.2019.125157

Cited by 68 publications

(29 citation statements)

References 39 publications

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“…Immobilization, co-contaminant influence on dye biodegradation, genetic modification of algae and cyanobacteria, graphene oxide addition and lipid production [137][138][139][140][141] Activated sludge, anaerobic sludge Granule formation (anaerobic core with aerobic shell), metagenomic analysis in anaerobic MBR, addition of resuscitation-promoting factors, integration of anaerobic and aerobic reactors, addition of halotolerant yeast and magnetic field [142][143][144][145][146][147][148][149][150] Biofilm Application of new biocarriers, co-substrate addition, kinetic analysis and process optimization in moving bed biofilm reactor, biomass acclimatization and optimization of anoxic/aerobic sequencing batch moving bed bioreactors [151][152][153][154][155] As seen from Table 2, there are numerous existing tried and tested methods to accomplish dye removal. Only in 2019, Deng et al [156] reviewed 42 papers on textile wastewater treatment technologies organized by physico-chemical, biological, and combined processes.…”

Section: Current Development Referencesmentioning

confidence: 99%

“…The aromatic amines produced as a result of azo bonds cleavage in the anaerobic step are further degraded in the aerobic one ( Figure 2) [232]. The combined anaerobic-aerobic treatment most often uses mixed bacterial cultures such as activated sludge [149,204,205,207], anaerobic granular sludge [150,153], anaerobic-aerobic granular sludge [142,206], immobilized activated sludge [151], or biofilm [111,153,155]. The sequencing of anaerobic-anoxic-aerobic conditions is easy to obtain in the sequence batch reactors (SBRs, [204,205])-the decolorization efficiency reached 100% by up to 94% of COD removal.…”

Section: Combined Anaerobic and Aerobic Treatmentmentioning

confidence: 99%

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Recent Achievements in Dyes Removal Focused on Advanced Oxidation Processes Integrated with Biological Methods

2021

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In the last 3 years alone, over 10,000 publications have appeared on the topic of dye removal, including over 300 reviews. Thus, the topic is very relevant, although there are few articles on the practical applications on an industrial scale of the results obtained in research laboratories. Therefore, in this review, we focus on advanced oxidation methods integrated with biological methods, widely recognized as highly efficient treatments for recalcitrant wastewater, that have the best chance of industrial application. It is extremely important to know all the phenomena and mechanisms that occur during the process of removing dyestuffs and the products of their degradation from wastewater to prevent their penetration into drinking water sources. Therefore, particular attention is paid to understanding the mechanisms of both chemical and biological degradation of dyes, and the kinetics of these processes, which are important from a design point of view, as well as the performance and implementation of these operations on a larger scale.

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Section: Current Development Referencesmentioning

confidence: 99%

Section: Combined Anaerobic and Aerobic Treatmentmentioning

confidence: 99%

Recent Achievements in Dyes Removal Focused on Advanced Oxidation Processes Integrated with Biological Methods

2021

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“…This solution would allow complying with current regulations for discharge to water bodies [ 96 ]. Micro-aerated UASB reactor can be a feasible solution to reduce effluent toxicity, in particular when treating complex industrial wastewater: micro-aeration allows removing the aromatic amines formed under anaerobic conditions [ 97 ].…”

Section: Modified Uasb Systems For Bio-hydrogen Volatile Fatty Acmentioning

confidence: 99%

Up-Flow Anaerobic Sludge Blanket (UASB) Technology for Energy Recovery: A Review on State-of-the-Art and Recent Technological Advances

2020

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Up-flow anaerobic sludge blanket (UASB) reactor belongs to high-rate systems, able to perform anaerobic reaction at reduced hydraulic retention time, if compared to traditional digesters. In this review, the most recent advances in UASB reactor applications are critically summarized and discussed, with outline on the most critical aspects for further possible future developments. Beside traditional anaerobic treatment of soluble and biodegradable substrates, research is actually focusing on the treatment of refractory and slowly degradable matrices, thanks to an improved understanding of microbial community composition and reactor hydrodynamics, together with utilization of powerful modeling tools. Innovative approaches include the use of UASB reactor for nitrogen removal, as well as for hydrogen and volatile fatty acid production. Co-digestion of complementary substrates available in the same territory is being extensively studied to increase biogas yield and provide smooth continuous operations in a circular economy perspective. Particular importance is being given to decentralized treatment, able to provide electricity and heat to local users with possible integration with other renewable energies. Proper pre-treatment application increases biogas yield, while a successive post-treatment is needed to meet required effluent standards, also from a toxicological perspective. An increased full-scale application of UASB technology is desirable to achieve circular economy and sustainability scopes, with efficient biogas exploitation, fulfilling renewable energy targets and green-house gases emission reduction, in particular in tropical countries, where limited reactor heating is required.

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“…Among the totality, about 15% of dyes are discharged to the environment due to their incomplete fixation during the step of fiber dyeing. Moreover, some dyes and other degradation by-products might be carcinogenic and have mutagenic properties, especially those containing the azo-aromatic function as a chromophore [2][3][4].Therefore, the textile effluent treatment is crucial for environment and health protection.…”

Section: Introductionmentioning

confidence: 99%

“…Some researchers highlight that biological processes represent the most economically viable routes for the removal of these contaminants [2,4,6,7]. Biological aerobic and anaerobic processes are based on the activity of heterotrophic and/or autotrophic microorganisms.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of a Combined System Based on an Upflow Anaerobic Sludge Blanket Reactor (UASB) and Shallow Polishing Pond (SPP) for Textile Effluent Treatment

Bahia

Borges

Passos

et al. 2020

Braz. arch. biol. technol.

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Color removal from textile effluents was evaluated using a laboratory-combined process based on an upflow anaerobic sludge blanket (UASB) reactor followed by a shallow polishing pond (SPP). The anaerobic reactor was fed with a real textile effluent, diluted 10-times in a 350 mg/L solution of pre-treated residual yeast extract from a brewery industry as nutrient source. The parameters color, COD, N-NH3 and toxicity were monitored throughout 45 days of operation. According to the results, decolorization and COD removal were highest in the anaerobic step, whereas the effluent was polished in the SPP unit. The overall efficiency of the complete UASB-SPP system for COD and color were 88 and 62%, respectively. Moreover, the N-NH3 generated by the residual yeast extract ammonification was below 5 mg/L for the final effluent. Finally, no toxicity was detected after the treatment steps, as shown by the Vibrio fischeri microscale assay.

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Microaerated UASB reactor treating textile wastewater: The core microbiome and removal of azo dye Direct Black 22

Cited by 68 publications

References 39 publications

Recent Achievements in Dyes Removal Focused on Advanced Oxidation Processes Integrated with Biological Methods

Recent Achievements in Dyes Removal Focused on Advanced Oxidation Processes Integrated with Biological Methods

Up-Flow Anaerobic Sludge Blanket (UASB) Technology for Energy Recovery: A Review on State-of-the-Art and Recent Technological Advances

Evaluation of a Combined System Based on an Upflow Anaerobic Sludge Blanket Reactor (UASB) and Shallow Polishing Pond (SPP) for Textile Effluent Treatment

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