Reuse of wastewater of the textile industry after its treatment with a combination of physico-chemical treatment and membrane technologies

Bes-Piá, A.; Mendoza–Roca, J.A.; Alcaina–Miranda, M.I.; Iborra-Clar, A.; Iborra–Clar, M.I.

doi:10.1016/s0011-9164(02)00750-6

Cited by 90 publications

(32 citation statements)

References 3 publications

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“…It is a challenging dye to use because of its insoluble nature in water; to be dissolved, it must undergo a chemical change under high alkaline condition. When a submerged fabric is removed from the dyebath, the indigo quickly combines with oxygen in the air and reverts to its insoluble form producing color on the fabric (Ciardelli et al, 2001;Bes-Pia et al, 2004). This textile chain begins with the production of raw fiber continues with pretreatment, dyeing, finishing, printing, coating, and other processes.…”

Section: Introductionmentioning

confidence: 99%

Biodecolorization and Bioremediation of Denim Industrial Wastewater by Adapted Bacterial Consortium Immobilized on Inert Polyurethane Foam (PUF) Matrix: A First Approach with Biobarrier Model

Rajendran¹,

Prabhavathi²,

Karthiksundaram³

et al. 2015

Pol J Microbiol

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A b s t r a c tThe present experiments were studied on bioremediation of denim industry wastewater by using polyurethane foam (PU foam) immobilized bacterial cells. About 30 indigenous adapted bacterial strains were isolated from denim textile effluent out of which only four isolates were found to be efficient against crude indigo carmine degradation using broth decolorization method. The selected bacterial strains were identified as Actinomyces sp., (PK07), Pseudomonas sp., (PK18), Stenotrophomonas sp., (PK23) and Staphylococcus sp., (PK28) based on microscopic and biochemical characteristics. The bacterial immobilized cells have the highest number of viable cells (PK07, PK18, PK23 and PK28 appeared to be 1 × 10 8 , 1 × 10 9 , 1 × 10 6 and 1 × 10 7 CFU/ml respectively) and maximum attachment efficiency of 92% on PU foam. The complete degradation using a consortium of PU foam immobilized cells was achieved at pH 6, 27°C, 100% of substrate concentration and allowed to develop biofilm for one day (1.5% W/V). In SEM analysis, it was found that immobilization of bacterial cells using PUF stably maintained the production of various extracellular enzymes at levels higher than achieved with suspended forms. Finally, isatin and anthranilic acid were found to be degradation products by NMR and TLC. The decolorized dye was not toxic to monkey kidney cell (HBL 100) at a concentration of 50 µl and 95% of cell viability was retained. A mathematical model that describes bacterial transport with biodegradation involves a set of coupled reaction equations with non-standard numerical approach based on the time step scheme. K e y w o r d s: biobarrier model, bioflim, bioremediation, cytotoxicity test, polyurethane foam, secondary metabolites

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Section: Introductionmentioning

confidence: 99%

Biodecolorization and Bioremediation of Denim Industrial Wastewater by Adapted Bacterial Consortium Immobilized on Inert Polyurethane Foam (PUF) Matrix: A First Approach with Biobarrier Model

Rajendran¹,

Prabhavathi²,

Karthiksundaram³

et al. 2015

Pol J Microbiol

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“…The latter filamentous bacterium is commonly reported to be able to grow under low DO conditions. This result is somehow interesting since the sensitivity of microorganisms to several toxic compounds (like most commercial dyes) in conventional activated sludge process causes problems of sludge bulking, rising sludge and pin point flocs formation, which greatly affect global treatment performances (Ahn et al 1999;Bes-Pià et al 2002;Delee et al 1998). The investigation of settling properties has shown that SBBGR sludge settleability, evaluated on microbial samples, was poor, as a sludge sample is considered to be easily settleable if SVI is below 80 cm 3 /g (values above 120 cm 3 /g indicate poor settleability).…”

Section: Biomass Characterizationmentioning

confidence: 99%

On-site treatment of textile yarn dyeing effluents using an integrated biological–chemical oxidation process

Lotito

Sanctis

Rossetti

et al. 2013

Int. J. Environ. Sci. Technol.

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This paper reports the results of the treatment of a yarn dyeing effluent using an integrated biologicalchemical oxidation process. In particular, the biological unit was based on a sequencing batch biofilter granular sludge reactor (SBBGR), while the chemical treatment consisted of an ozonation step. Biological treatment alone was first performed as a reference for comparison. While biological treatment did not produce an effluent for direct discharge, the integrated process assured good treatment results, with satisfactory removal of chemical oxygen demand (up to 89.8 %), total nitrogen (up to 88.2 %), surfactants (up to 90.7 %) and colour (up to 99 %), with an ozone dose of 110 mg of ozone per litre of wastewater. Biomass characterization by fluorescence in situ hybridization has revealed that filamentous bacteria represented about 20 % of biomass (coherently with high sludge volume index values); thanks to its special design, SBBGR guaranteed, however, stable treatment performances and low effluent suspended solids concentrations, while conventional activated sludge systems suffer from sludge bulking and even treatment failure in such a condition. Furthermore, biomass characterization has evidenced the presence of a shortcut nitrification-denitrification process.

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“…Os processos de tratamento biológicos que utilizam lodos ativados oferecem alta eficiência no que se trata da remoção de COD, mas geralmente ocasiona problemas operacionais, não elimina completamente a coloração da água e problemas com sedimentações indesejáveis, o uso da flotação para separar o lodo ativado do efluente tratado resolveria este problema, entretanto tornaria complicada as operações na planta. Em processos que utilizam a aplicação de agentes oxidantes como, ozônio ou até mesmo a combinação de ozônio, UV e H 2 O 2 apresentam como desvantagem o alto custo do processo (Bes-Pih et al, 2002).…”

Section: Introductionunclassified

Tratamento De Efluente Têxtil Sintético Utilizando Precipitação De Tensoativo

Câmara¹,

Neto²,

Melo³

2015

Anais Do Congresso Brasileiro De Engenharia Química Em Iniciação Científica - Cobeq IC 2015

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RESUMO -As indústrias de um modo geral produzem efluentes que quando não são tratados corretamente podem acarretar em problemas ambientais, e uma das indústrias que mais gera efluentes danosos é a têxtil. O mundo atual busca alternativas eficazes para minimizar os danos que tais efluentes causam à natureza. O seguinte trabalho apresenta uma alternativa eficiente, viável e de baixo custo no que se refere ao tratamento de efluente têxtil contendo o corante Direct Yellow 27 (DY27) por meio da precipitação de tensoativos. Os parâmetros concentração de tensoativo, concentração inicial de DY27 e temperatura foram avaliados. Os resultados obtidos mostram que o mesmo é eficiente, alcançando uma remoção de 94% aplicando concentração de tensoativo de 1300 ppm. INTRODUÇÃOA indústria têxtil, devido a elevada demanda de água requerida no processo de tingimento de tecidos e a produção de quantidades de efluentes suficientes para causar danos ambientais de grandes proporções, e que são descarregados em centros de tratamento de esgoto ou diretamente nos corpos d'água (Archna et al., 2012), podendo causar danos aos lençóis freáticos, põe esta indústria entre as mais poluidoras. Os efluentes do processo de tingimento tem cor forte, alto pH, alta temperatura, alto DQO (demanda química de oxigênio) e baixa biodegradabilidade (Archna et al., 2012). O grupo azo que se localiza na estrutura do corante aumenta a toxicidade do efluente têxtil ao ambiente. Produtos químicos usados para conferir uma melhor fixação ao corante tais como: ácidos, álcalis, sais de nitrato e sulfato, tensoativos e formaldeído elevam o grau de poluição dos efluentes gerados. Portanto, o tratamento destes efluentes se torna fundamental para que seu lançamento em corpos d'água ao final do processo seja possível.Diferentes tipos de corantes possuem variadas características químicas e são selecionados de acordo com os materiais que serão tingidos (O'Niel et al., 1999). Corantes sintéticos, devido a sua relativa estabilidade e sua ampla aplicação em processos de tingimento, despertam o interesse da indústria. Porém, apresentam dificuldades quando se trata de sua remoção de plantas de tratamento de efluentes, seja por processos químicos, físicos ou biológicos (Martynas et al., 2013). Os corantes diretos são compostos solúveis em água capazes de tingir fibras de celulose (algodão, viscose, etc.) através de interações de Van der Waals. A afinidade do corante é aumentada pelo uso de eletrólitos, pela planaridade na configuração da molécula do corante ou a dupla-ligação conjugada que aumenta a adsorção do corante sobre a fibra (Guaratini e Zanoni, 1999).

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Reuse of wastewater of the textile industry after its treatment with a combination of physico-chemical treatment and membrane technologies

Cited by 90 publications

References 3 publications

Biodecolorization and Bioremediation of Denim Industrial Wastewater by Adapted Bacterial Consortium Immobilized on Inert Polyurethane Foam (PUF) Matrix: A First Approach with Biobarrier Model

Biodecolorization and Bioremediation of Denim Industrial Wastewater by Adapted Bacterial Consortium Immobilized on Inert Polyurethane Foam (PUF) Matrix: A First Approach with Biobarrier Model

On-site treatment of textile yarn dyeing effluents using an integrated biological–chemical oxidation process

Tratamento De Efluente Têxtil Sintético Utilizando Precipitação De Tensoativo

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