Social life cycle assessment of microalgae-based systems for wastewater treatment and resource recovery

Josa, Irene; Garfí, Marianna

doi:10.1016/j.jclepro.2023.137121

Cited by 21 publications

(3 citation statements)

References 57 publications

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“…Currently, environmental pollution and energy shortages restrict social development. Wastewater treatment and resource reuse are important components of implementing the concept of ecological civilization . With the rapid growth of industry in our country, the amount of wastewater discharge is also increasing day by day.…”

Section: Introductionmentioning

confidence: 99%

“…Wastewater treatment and resource reuse are important components of implementing the concept of ecological civilization. 1 With the rapid growth of industry in our country, the amount of wastewater discharge is also increasing day by day. Energy conservation and consumption reduction, deep treatment and reuse, and standard discharge of wastewater in the wastewater treatment process have always been the focus and hotspot of people’s attention.…”

Section: Introductionmentioning

confidence: 99%

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Performance and Mechanism of the Modified Group Regulated the MIL-101(Fe) Type Fenton-like Catalysts

Guo,

Shi,

Feng

et al. 2024

ACS Omega

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In order to avoid the disadvantages of the Fenton process in wastewater treatment and reduce the cost of wastewater treatment, a series of MIL-101(Fe)-X (X = −OH, −NH 2 , −NO 2 , −H) solid Fenton catalysts were successfully prepared. The performance of these Fenton-like catalysts was studied with the Fenton experiment as a reference and methylene blue (MB) as an organic pollutant. The effects of the H 2 O 2 concentration, catalyst dosage, and reaction pH on catalytic performance were systematically studied. The research had shown that the optimal concentration of H 2 O 2 for catalytic reactions was 0.10 mmol/L and the pH was 3. At this point, their catalytic degradation MB performance was superior to the Fenton reaction and photocatalytic reaction. When the H 2 O 2 participated in the reaction, the performance of MIL-101(Fe)-X (X = −OH, −NH 2 , −NO 2 , −H) in catalyzing the degradation of MB followed the rule of −OH > −NH 2 > −NO 2 > −H. This was due to the synergistic effect of Fenton-like catalysis and photocatalytic degradation in the catalytic degradation of MB. In addition, the electron paramagnetic resonance and electrospray ionization mass spectrometry showed that the hydroxyl radical (•OH) generated during the catalytic process first underwent a redox reaction with the highly electronegative functional groups in the MB molecule, and finally oxidized it to CO 2 and H 2 O. This study successfully prepared commercially applicable Fenton-like catalysts and explored their optimal reaction conditions. This provides a technical reference for wastewater treatment.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Performance and Mechanism of the Modified Group Regulated the MIL-101(Fe) Type Fenton-like Catalysts

Guo,

Shi,

Feng

et al. 2024

ACS Omega

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“…To reduce the cost of cultivation, researchers have attempted to search for an alternative medium for microalgae cultivation, such as food waste, cow manure and municipal wastewater [20,21]. Wastewater as a pollutant source contains a high content of nutrients (e.g., nitrogen, phosphorus and potassium), which can be utilized as a potential culture medium for microalgae [22,23]. During microalgae cultivation, the nutrients in wastewater can be effectively assimilated, organics can be partially reduced, and other micropollutants can be removed, which makes it an energysaving wastewater treatment method [24].…”

Section: Introductionmentioning

confidence: 99%

Microalgae Cultivation Using Municipal Wastewater and Anaerobic Membrane Effluent: Lipid Production and Nutrient Removal

Tang

Chen

et al. 2023

Water

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Microalgae cultivation using wastewater is a combined process for pollutant removal and lipid production that has been widely studied in recent years. In this study, the effects of anaerobic membrane effluent (AME) and municipal wastewater (MW) ratios on microalgae growth and pollutant removal processes were investigated, and the lipid production properties were also explored. Results show that microalgae can grow in all AME/WW ratios, and a 40% AME content is the optimal condition for microalgal biomass accumulation (52.9 mg/L·d) and lipid production (0.378 g/L). Higher AME addition would inhibit microalgae growth. In addition, high ammonia (approximately 97%) and phosphate (around 90%) removal efficiencies can be achieved in all AME/WW ratio conditions, while the total nitrogen removal efficiencies decreased with the addition of AME. Total nitrogen and phosphate are the limiting factors in treating water to meet the requirements of the integrated wastewater discharge standard. This study provided a new method for anaerobic digestion and municipal wastewater treatment and also realized green energy production based on the sustainable development principles.

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Challenges, progress, and future perspectives for cyanobacterial polyhydroxyalkanoate production

Rueda,

Gonzalez-Flo,

Mondal

et al. 2024

Rev Environ Sci Biotechnol

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Polyhydroxyalkanoates (PHA) are a promising bio-based alternative to traditional plastics derived from petroleum. Cyanobacteria are photosynthetic organisms that produce PHA from CO2 and sunlight, which can potentially reduce production costs and environmental footprint in comparison to heterotrophic bacteria cultures because (1) they utilize inorganic carbon sources for growth and (2) they do not require intensive aeration for oxygenation. Moreover, supplementing precursors such as propionate, acetate, valerate, etc., can be used to obtain various copolymers with plastic customizable properties in comparison to the classical homopolymers, such as polyhydroxybutyrate, PHB. This critical review covers the latest advances in PHA production, including recent discoveries in the metabolism interplay between PHA and glycogen production, and new insights into cultivation strategies that enhance PHA accumulation, and purification processes. This review also addresses the challenges and suggests potential solutions for a viable industrial PHAs production process.

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Social life cycle assessment of microalgae-based systems for wastewater treatment and resource recovery

Cited by 21 publications

References 57 publications

Performance and Mechanism of the Modified Group Regulated the MIL-101(Fe) Type Fenton-like Catalysts

Performance and Mechanism of the Modified Group Regulated the MIL-101(Fe) Type Fenton-like Catalysts

Microalgae Cultivation Using Municipal Wastewater and Anaerobic Membrane Effluent: Lipid Production and Nutrient Removal

Challenges, progress, and future perspectives for cyanobacterial polyhydroxyalkanoate production

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