Wastewater from textile digital printing as a substrate for microalgal growth and valorization

Marazzi, Francesca; Fornaroli, Riccardo; Clagnan, Elisa; Brusetti, Lorenzo; Ficara, Elena; Bellucci, Micol; Mezzanotte, Valeria

doi:10.1016/j.biortech.2023.128828

Cited by 8 publications

(4 citation statements)

References 44 publications

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“…Equation ( 4) allows for the determination of removal efficiency, with S i and S f being the initial and final nutrient concentrations (mg L −1 ). Equation (5) gives the average removal rate (RR).…”

Section: Growth Kinetic Parameters and Nutrient Removalmentioning

confidence: 99%

“…The discharge of untreated textile effluents with high nitrogen and phosphorus concentrations can lead to severe eutrophication, resulting in reduced oxygen availability in water bodies and impacting marine biodiversity and ecosystems [ 5 , 6 , 7 , 8 ]. Additionally, the exposure to and the bioaccumulation of heavy metals such as chromium, cadmium, zinc, and arsenic can have detrimental effects on living organisms, ranging from inhibiting specific characteristics to changes in behaviour and even premature death.…”

Section: Introductionmentioning

confidence: 99%

“…After microalgal treatment, the biomass can be utilised for various purposes, including fertilisers, biofuels (such as biodiesel, bioethanol, or biogas), electricity production, and the extraction of valuable pigments like chlorophyll- a and - b and carotenoids. Numerous studies have indicated the efficiency, eco-friendliness, and cost-effectiveness of microalgae treatment for textile wastewater [ 5 , 6 , 7 , 13 , 14 ]. Researchers have explored various aspects of this approach, including microalgae species selection, wastewater dilution levels, and the impact on parameters such as colour removal, chemical oxygen demand (COD) reduction, and nutrient removal.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Microalgae-Based Remediation of Real Textile Wastewater: Assessing Pollutant Removal and Biomass Valorisation

Martins,

Salgado,

Gonçalves

et al. 2024

Bioengineering

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The textile industry generates highly contaminated wastewater. It severely threatens local ecosystems without proper treatment, significantly diminishing biodiversity near the discharge point. With rapid growth rates, microalgae offer an effective solution to mitigate the environmental impact of textile wastewater, and the generated biomass can be valorised. This study sets out to achieve two primary objectives: (i) to assess the removal of pollutants by Chlorella vulgaris from two distinct real textile wastewaters (without dilution) and (ii) to evaluate microalgal biomass composition for further valorisation (in a circular economy approach). Microalgae grew successfully with growth rates ranging from 0.234 ± 0.005 to 0.290 ± 0.003 d−1 and average productivities ranging from 78 ± 3 to 112.39 ± 0.07 mgDW L−1 d−1. All cultures demonstrated a significant reduction in nutrient concentrations for values below the legal limits for discharge, except for COD in effluent 2. Furthermore, the pigment concentration in the culture increased during textile effluent treatment, presenting a distinct advantage over conventional ones due to the economic value of produced biomass and pigments. This study underscores the promise of microalgae in textile wastewater treatment and provides valuable insights into their role in addressing the environmental challenges the textile industry poses.

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Section: Growth Kinetic Parameters and Nutrient Removalmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Microalgae-Based Remediation of Real Textile Wastewater: Assessing Pollutant Removal and Biomass Valorisation

Martins,

Salgado,

Gonçalves

et al. 2024

Bioengineering

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show abstract

“…Only a fraction of these articles address the recovery of solid waste from the textile industry [443,444]. Marazzi et al [445] propose the use of algae for the treatment of dyes and their subsequent transformation into energy in biogas plants through anaerobic digestion.…”

mentioning

confidence: 99%

Use of Zero-Valent Iron Nanoparticles (nZVIs) from Environmentally Friendly Synthesis for the Removal of Dyes from Water—A Review

Rodríguez-Rasero,

Montes-Jimenez,

Alexandre-Franco

et al. 2024

Water

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This review article addresses the increasing environmental concerns posed by synthetic dyes in water, exploring innovative approaches for their removal with a focus on zero-valent iron nanoparticles (nZVIs) synthesized through environmentally friendly methods. The article begins by highlighting the persistent nature of synthetic dyes and the limitations of conventional degradation processes. The role of nanoparticles in environmental applications is then discussed, covering diverse methods for metallic nanoparticle production aligned with green chemistry principles. Various methods, including the incorporation of secondary metals, surface coating, emulsification, fixed support, encapsulation, and electrostatic stabilization, are detailed in relation to the stabilization of nZVIs. A novel aspect is introduced in the use of plant extract or biomimetic approaches for chemical reduction during nZVI synthesis. The review investigates the specific challenges posed by dye pollution in wastewater from industrial sources, particularly in the context of garment coloring. Current approaches for dye removal in aqueous environments are discussed, with an emphasis on the effectiveness of green-synthesized nZVIs. The article concludes by offering insights into future perspectives and challenges in the field. The intricate landscape of environmentally friendly nZVI synthesis has been presented, showcasing its potential as a sustainable solution for addressing dye pollution in water.

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Bioreactors and Operation Modes for Microalgae‐Based Wastewater Treatment

de Andrade,

Medeiros,

de Farias Silva

et al. 2024

Algae Mediated Bioremediation

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Wastewater from textile digital printing as a substrate for microalgal growth and valorization

Cited by 8 publications

References 44 publications

Microalgae-Based Remediation of Real Textile Wastewater: Assessing Pollutant Removal and Biomass Valorisation

Microalgae-Based Remediation of Real Textile Wastewater: Assessing Pollutant Removal and Biomass Valorisation

Use of Zero-Valent Iron Nanoparticles (nZVIs) from Environmentally Friendly Synthesis for the Removal of Dyes from Water—A Review

Bioreactors and Operation Modes for Microalgae‐Based Wastewater Treatment

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