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de Oliveira CRS, de Oliveira PV, Pellenz L, de Aguiar CRL, da Silva Júnior AH. Supercritical fluid technology as a sustainable alternative method for textile dyeing: An approach on waste, energy, and CO 2 emission reduction. J Environ Sci (China) 2024; 140:123-145. [PMID: 38331495 DOI: 10.1016/j.jes.2023.06.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 06/03/2023] [Accepted: 06/04/2023] [Indexed: 02/10/2024]
Abstract
The clothing industry is considered one of the most polluting industries on the planet due to the high consumption of water, energy, chemicals/dyes, and high generation of solid waste and effluents. Faced with environmental concerns, the textile ennoblement sector is the most critical of the textile production chain, especially the traditional dyeing processes. As an alternative to current problems, dyeing with supercritical CO2 (scCO2) has been presented as a clean and efficient process for a sustainable textile future. Supercritical fluid dyeing (SFD) has shown a growing interest due to its significant impact on environmental preservation and social, economic, and financial gains. The main SFD benefits include economy and reuse of non-adsorbed dyes; reduction of process time and energy expenditure; capture of atmospheric CO2 (greenhouse gas); use and recycling of CO2 in SFD; generation of carbon credits; water-free process; effluent-free process; reduction of CO2 emission and auxiliary chemicals. Despite being still a non-scalable and evolving technology, SFD is the future of dyeing. This review presented a comprehensive overview of the environmental impacts caused by traditional processes and confronted the advantages of SFD. The SFD technique was introduced, along with its latest advances and future perspectives. Financial and environmental gains were also discussed.
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Affiliation(s)
- Carlos Rafael Silva de Oliveira
- Federal University of Santa Catarina, Textile Engineering Department, 2514 João Pessoa St., Blumenau, SC, 89036-004, Brazil; Federal University of Santa Catarina, Chemical Engineering Department, S/n Biotério Central St., Florianópolis, SC, 88040-900, Brazil.
| | - Patrícia Viera de Oliveira
- Federal University of Santa Catarina, Chemical Engineering Department, S/n Biotério Central St., Florianópolis, SC, 88040-900, Brazil
| | - Leandro Pellenz
- Federal University of Santa Catarina, Chemical Engineering Department, S/n Biotério Central St., Florianópolis, SC, 88040-900, Brazil
| | - Catia Rosana Lange de Aguiar
- Federal University of Santa Catarina, Textile Engineering Department, 2514 João Pessoa St., Blumenau, SC, 89036-004, Brazil
| | - Afonso Henrique da Silva Júnior
- Federal University of Santa Catarina, Chemical Engineering Department, S/n Biotério Central St., Florianópolis, SC, 88040-900, Brazil
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Bueno SA, de Oliveira Santiago Santos G, Oliveira Silva T, Vasconcelos Lanza MR, Balderas Hernández P, Roa Morales G, Ibáñez Cornejo J, Sáez C, Rodrigo MA. Sustainable integrated process for cogeneration of oxidants for VOCs removal. Chemosphere 2023; 342:140171. [PMID: 37714487 DOI: 10.1016/j.chemosphere.2023.140171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Revised: 08/18/2023] [Accepted: 09/12/2023] [Indexed: 09/17/2023]
Abstract
This study upgrades the sustainability of environmental electrochemical technologies with a novel approach consisting of the in-situ cogeneration and use of two important oxidants, hydrogen peroxide (H2O2) and Caro's acid (H2SO5), manufactured with the same innovative cell. This reactor was equipped with a gas diffusion electrode (GDE) to generate cathodically H2O2, from oxygen reduction reaction, a boron doped diamond (BDD) electrode to obtain H2SO5, via anodic oxidation of dilute sulfuric acid, and a proton exchange membrane to separate the anodic and the cathodic compartment, preventing the scavenging effect of the interaction of oxidants. A special design of the inlet helps this cell to reach simultaneous efficiencies as high as 99% for H2O2 formation and 19.7% for Caro's acid formation, which means that the cogeneration reaches efficiencies over 100% in the uses of electric current to produce oxidants. The two oxidants' streams produced were used with different configurations for the degradation of three volatile organic compounds (benzene, toluene, and xylene) in a batch reactor equipped with a UVC-lamp. Among different alternatives studied, the combination H2SO5/H2O2 under UVC irradiation showed the best results in terms of degradation efficiency, demonstrating important synergisms as compared to the bare technologies.
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Affiliation(s)
- Sabrina Ayala Bueno
- Universidad Autónoma del Estado de México UAEM, Toluca, Mexico; Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, Universidad Castilla-La Mancha, Ciudad Real, Spain
| | - Géssica de Oliveira Santiago Santos
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, Universidad Castilla-La Mancha, Ciudad Real, Spain; Sao Carlos Institute of Chemistry, University of São Paulo, São Carlos, São Paulo, 13566-590, Brazil.
| | - Taynara Oliveira Silva
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, Universidad Castilla-La Mancha, Ciudad Real, Spain; Sao Carlos Institute of Chemistry, University of São Paulo, São Carlos, São Paulo, 13566-590, Brazil
| | | | | | | | | | - Cristina Sáez
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, Universidad Castilla-La Mancha, Ciudad Real, Spain
| | - Manuel Andres Rodrigo
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, Universidad Castilla-La Mancha, Ciudad Real, Spain.
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