Combination of catalytic ozonation and fungal bioremediation for treatment from effluent from the laminate production industry
Revista Ambiente E Água
Combination of catalytic ozonation and fungal bioremediation for treatment from effluent from the laminate production industry
Autor Correspondente: Claudio Eduardo Scherer | [email protected]
Palavras-chave: fungi, ozonation, phenols, wood lamination
Resumos Cadastrados
Resumo Português:
Este estudo foi voltado a caracterização e avaliação do potencial da combinação de estratégias de tratamento para a remoção de compostos fenólicos, cor e ecoxicidade de um efluente gerado por uma indústria madeireira de Produção de Laminados. A caracterização de uma amostra do efluente gerado pelo processo de laminação de pinus coletada em uma indústria da região Sudoeste do estado do Paraná confirmou o potencial impactante do efluente, com destaque para o elevado teor de compostos fenólicos (1.530 ±50 mg/L), cor (2.159 ±30 unidades), significativa toxicidade aguda (63% de mortalidade de microcrustáceos Artemia. salina) e baixa biodegradabilidade (DBO5 /DQO=0,53) podendo, se eventualmente lançado em corpos receptores, causar irreversíveis e deletérios efeitos a microbiota aquática. Os processos de tratamento estudados neste trabalho envolveram ozonização catalítica mediada por material catalítico ferroso baseado em carepas de aço e processo biológico com fungos Pleurotus florida, avaliados de forma individual e integrados da sequinte forma: Ozonização catalítica>>processo biológico e vice-versa. Os melhores resultados foram obtidos pela aplicação da sequência “ozonização catalítica>>processo biológico”, que resultou em reduções de 96,2% em concentrações de lignina solúvel, 93,3% nas unidades de cor e mais de 99% na redução de fenóis totais, além de baixa taxa de mortalidade de A. salina (≈10%). No processo integrado, a aplicação da ozonização catalítica antes do processo biológico apresenta maiores vantagens em razão do processo de pré-decomposição de compostos recalcitrantes pela ação química da ozonização catalítica, que pode converter estes compostos em biodegradáveis, facilitando a ação do processo biológico para a remediação do efluente estudado.
Palavras-chave: fenóis; fungos; laminação de madeira; ozonização
Resumo Inglês:
This study characterized and evaluated the potential of a combination of treatment strategies for the removal of phenolic compounds, color, and ecotoxicity of an effluent generated by a laminated wood industry. The characterization of a sample of the effluent generated by the pine lamination process collected in an industry in the Southwest region of the state of Paraná confirmed the potential impact of the effluent, with emphasis on the high content of phenolic compounds (1,530 ±50 mg/L), color (2,159 ±30 units), significant acute toxicity (63% mortality of microcrustaceans Artemia salina) and low biodegradability (BOD/COD=0.53), which, if eventually released into receiving bodies, can cause irreversible and harmful effects to the aquatic microbiota. The treatment processes studied in this work involved catalytic ozonation mediated by ferrous catalytic material based on steel scale and biological process with Pleurotus Florida fungi, evaluated in an individual way and sequentially integrated as follows: Catalytic ozonation>>biological process and vice-versa. The best results were obtained by applying the sequence "catalytic ozonation>>biological process", which resulted in reductions of 96.2% in soluble lignin concentrations, 93.3% in color units and more than 99% reduction in total phenols, in addition to a low mortality rate of A. salina (≈10%). In the integrated process, the application of catalytic ozonation before the biological process presents greater advantages because of the pre-decomposition process of recalcitrant compounds by the chemical action of catalytic ozonation, which can convert these compounds into biodegradable, facilitating the action of the biological process for the remediation of the effluent.
Keywords: fungi, ozonation, phenols, wood lamination
Resumo Espanhol:
This study characterized and evaluated the potential of a combination of treatment strategies for the removal of phenolic compounds, color, and ecotoxicity of an effluent generated by a laminated wood industry. The characterization of a sample of the effluent generated by the pine lamination process collected in an industry in the Southwest region of the state of Paraná confirmed the potential impact of the effluent, with emphasis on the high content of phenolic compounds (1,530 ±50 mg/L), color (2,159 ±30 units), significant acute toxicity (63% mortality of microcrustaceans Artemia salina) and low biodegradability (BOD/COD=0.53), which, if eventually released into receiving bodies, can cause irreversible and harmful effects to the aquatic microbiota. The treatment processes studied in this work involved catalytic ozonation mediated by ferrous catalytic material based on steel scale and biological process with Pleurotus Florida fungi, evaluated in an individual way and sequentially integrated as follows: Catalytic ozonation>>biological process and vice-versa. The best results were obtained by applying the sequence "catalytic ozonation>>biological process", which resulted in reductions of 96.2% in soluble lignin concentrations, 93.3% in color units and more than 99% reduction in total phenols, in addition to a low mortality rate of A. salina (≈10%). In the integrated process, the application of catalytic ozonation before the biological process presents greater advantages because of the pre-decomposition process of recalcitrant compounds by the chemical action of catalytic ozonation, which can convert these compounds into biodegradable, facilitating the action of the biological process for the remediation of the effluent.
Keywords: fungi, ozonation, phenols, wood lamination
