Minimizing Freshwater Consumption in the Wash-Off Step in Textile Reactive Dyeing by Catalytic Ozonation with Carbon Aerogel Hosted Bimetallic Catalyst

Hu, Enling; Shang, Songmin; Tao, Xiaoming; Jiang, Shouxiang; Chiu, Ka-lok

doi:10.3390/polym10020193

Cited by 11 publications

(5 citation statements)

References 44 publications

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“…[ 8 ] Traditionally, hydroxyl radicals in AOPs could be generated by chemical, [ 9,10 ] electrochemical, [ 11,12 ] or photochemical ways. [ 13–17 ] Recently, piezocatalysis, a new concept for AOPs, has been proposed and well developed. [ 18–21 ] Piezoelectric materials, with noncentrosymmetric crystal structures, can generate a net built‐in electric field upon applied strain.…”

Section: Introductionmentioning

confidence: 99%

Piezocatalytic Foam for Highly Efficient Degradation of Aqueous Organics

et al. 2020

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Piezoelectric catalysis (piezocatalysis) is a physical/chemical process that utilizes piezoelectric potential for accelerating chemical reactions, in which ubiquitous mechanical energies in nature are used for various catalysis applications, e.g., treating organic water pollutants. Despite the high efficiency achieved by piezocatalytic powders, the particles used tend to diffuse in water systems and are hard to be separated, thus causing secondary pollution. Herein, a free‐standing piezocatalytic foam is designed and fabricated, which is composed of BaTiO3 nanoparticles embedded in the PVDF scaffold. The as‐prepared PVDF–BaTiO3 composite foam demonstrates outstanding piezocatalytic efficiency in removing aqueous organics among state‐of‐the‐art integral piezocatalytic platforms, which lie in the synergy of piezoelectric materials and abundant interconnected pores within the foam. Significantly, PVDF–BaTiO3 foam is further applied for purifying natural water samples, by which the permanganate index of the water sample reduces by nearly 30% after 2 h of treatment. In addition, as a monolithic platform, PVDF–BaTiO3 foam is easy to be collected, with high reuse stability and applicability for treating various pollutants, resulting in dominant advantages over powder‐based systems for practical high‐flux wastewater treatment. Herein, a piezocatalytic platform is provided for the effective degradation of organic pollutants in water, with minimal environmental side effects.

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Section: Introductionmentioning

confidence: 99%

Piezocatalytic Foam for Highly Efficient Degradation of Aqueous Organics

et al. 2020

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“…Dyeing effluent from textile manufacturing is a main source for environmental pollution. − These nonbiodegradable dyes are toxic to the water plants and animals and are considered to be carcinogenic or teratogenic for human health. − Thus, wastewater discharged from textile dyeing should be pretreated before being released into the natural environment. − In recent years, the Fenton process has attracted much interest for degradation of dyes. The produced •OH radicals are powerful oxidants, which could degrade organic matter into water, carbon dioxide, and inorganic compounds by oxidation reactions. − …”

Section: Introductionmentioning

confidence: 99%

Rechargeable Photoactive Silk-Derived Nanofibrous Membranes for Degradation of Reactive Red 195

Zou

Sun

et al. 2018

ACS Sustainable Chem. Eng.

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Constructing nanosized photoactive membrane materials would facilitate the pretreatment of dyeing wastewater and reducing environmental pollution. However, preparation of such membrane materials remains tremendously challenging. In this work, we fabricate the silk-derived nanofibrous membranes modified with 3,3′,4,4′-benzophenone tetracarboxylic dianhydride (BDSNM) that could yield reactive oxygen species (ROS) driven under UV light irradiation. The premise of this study is that BDSNM can store photoactive activity at UV light and release ROS under dark conditions. The resultant BDSNM exhibited extra-fine fiber diameter (129 nm), larger surface area (13.8 m2 g–1), superhydrophilicity, fast ROS production, good activity storing capacity, and good degradation capacity for reactive red 195 (>99.9999%) within 30 min. The effective synthesis of such economic and fascinating BDSNM may pave a way for fabrication of photoactive membranes for dye degradation.

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“…Improving wastewater treatment reduces water consumption and environmental impacts by enhancing water reuse and pollutant degradation in factory effluents. Physical, chemical, and biological methods are common 105 and can be combined (as hybrid methods) with real-time monitoring and analytical techniques 112 . One example is an integrated ultraviolet and H2O2 treatment for effluents from textile companies in Brazil, which reduced 92.9% of water use and removed over 90% of the total organic carbon and salt 113 .…”

Section: Textile Manufacturing Improvementsmentioning

confidence: 99%

Environmental impacts of cotton and opportunities for improvement

Zhang,

Huang,

Yao

et al. 2023

Nat Rev Earth Environ

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Cotton-supplying approximately a quarter of global textile fibres-has various environmental impacts, including water use, toxicity, eutrophication, and greenhouse gas emissions. In this Review, we identify these global impacts across multiple life cycle stages. Environmental impacts at the cultivation stage depend on levels of irrigation, pesticide, and fertilizer applications. At the textile manufacturing stage, impacts depend on energy infrastructure and manufacturing technologies. At the use phase, consumer habits related to buying, washing, drying, and ironing play a role. Depending on the impact category and country, either cotton cultivation, manufacturing, or use can dominate such impacts. For example, the use phase dominates greenhouse gas emissions in countries with carbon-intensive energy grids. Use of alternative fibres has the potential to reduce these environmental impacts, particularly jute and flax, which have much lower water demands.Opportunities for farmers, manufacturers, and consumers to improve the environmental sustainability of cotton textiles include, among others, improving water use efficiency in agriculture, innovative recycling, and laundering less frequently. Future cotton sustainability assessments are needed to fill data gaps related to developing and emerging countries, the number of uses of a cotton garment, further environmental impacts like salinization, as well as socio-economic impacts.

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Minimizing Freshwater Consumption in the Wash-Off Step in Textile Reactive Dyeing by Catalytic Ozonation with Carbon Aerogel Hosted Bimetallic Catalyst

Cited by 11 publications

References 44 publications

Piezocatalytic Foam for Highly Efficient Degradation of Aqueous Organics

Piezocatalytic Foam for Highly Efficient Degradation of Aqueous Organics

Rechargeable Photoactive Silk-Derived Nanofibrous Membranes for Degradation of Reactive Red 195

Environmental impacts of cotton and opportunities for improvement

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