Influence of carbon-coated zero-valent iron-based nanoparticle concentration on continuous photosynthetic biogas upgrading

Article Energy & Fuels

Influence of mesoporous iron based nanoparticles on Chlorella sorokiniana metabolism during photosynthetic biogas upgrading

Laura Vargas-Estrada et al.

Summary: The addition of various mesoporous iron based nanoparticles can enhance CO2 adsorption and improve microalgae productivity during photosynthetic biogas upgrading.

FUEL (2023)

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Article Biochemistry & Molecular Biology

Advanced biokinetic and hydrodynamic modelling to support and optimize the design of full-scale high rate algal ponds

Antonio Ortiz et al.

Summary: In this study, a demonstrative-scale high rate algal pond (HRAP) system for secondary wastewater treatment in India was designed and optimized using simulations and modelling. The study found that a hydraulic retention time of 4 days was optimal for nutrient removal and biomass production. The most efficient design configuration was determined, and a technical-economic assessment of the system was conducted.

COMPUTATIONAL AND STRUCTURAL BIOTECHNOLOGY JOURNAL (2022)

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Review Environmental Sciences

Emerging microalgae-based technologies in biorefinery and risk assessment issues: Bioeconomy for sustainable development

Pooja Sharma et al.

Summary: Industrial wastewater treatment is crucial for the safety of aquatic ecosystems and the health of humans living near water bodies. Microalgae-based technologies not only efficiently remove environmental pollutants but also produce a wide range of healthy supplements, supporting the concept of biorefinery.

SCIENCE OF THE TOTAL ENVIRONMENT (2022)

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Article Biotechnology & Applied Microbiology

Elucidating the role of nanoparticles on photosynthetic biogas upgrading: Influence of biogas type, nanoparticle concentration and light source

Laura Vargas-Estrada et al.

Summary: This study investigated the effects of three different nanoparticles on photosynthetic biogas upgrading. Fe2O3 nanoparticles and CACOI nanoparticles showed improved CO2 consumption, biomass productivity, and carbohydrate content under certain concentrations. SiO2 nanoparticles enhanced lipid and carbohydrate production. However, the beneficial effects of nanoparticles were reduced under UV light exposure.

ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS (2022)

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Article Engineering, Environmental

Photosynthetic upgrading of biogas from anaerobic digestion of mixed sludge in an outdoors algal-bacterial photobioreactor at pilot scale

Lara Mendez et al.

Summary: Anaerobic digestion coupled with algal-bacterial consortia can transform sewage sludge into biogas and remove CO2, H2S, and nutrients. The optimization of operational stages improves methane productivity and COD removal, and the addition of alkaline substances enhances methane content and CO2 removal.

JOURNAL OF WATER PROCESS ENGINEERING (2022)

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Article Energy & Fuels

Anaerobic digestion of food waste coupled with biogas upgrading in an outdoors algal-bacterial photobioreactor at pilot scale

David Marin et al.

Summary: This study aimed to integrate anaerobic digestion of food waste with photosynthetic biogas upgrading to obtain high-quality biomethane and nutrient-rich algal biomass. The results showed that the integration of anaerobic digestion with a high-rate algal pond resulted in efficient biogas production and CO2 removal, as well as effective removal of nitrogen and phosphorus by the algae.

FUEL (2022)

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Article Energy & Fuels

Impact of the algal-bacterial community structure, physio-types and biological and environmental interactions on the performance of a high rate algal pond treating biogas and wastewater

Sara Cantera et al.

Summary: This study found that the dominance of versatile and resistant algae, such as Chlorella vulgaris, in High Rate Algal Ponds (HRAP) allowed for the production of biomethane with high methane content. The bacterial community influenced both biogas upgrading and wastewater treatment, with different roles in nutrient removal and nitrification. Photosynthetic biogas upgrading combined with wastewater treatment in HRAPs showed promise for sustainable wastewater treatment and biogas production.

FUEL (2021)

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Review Biotechnology & Applied Microbiology

Current advances in microalgae-based treatment of high-strength wastewaters: challenges and opportunities to enhance wastewater treatment performance

Andres Torres-Franco et al.

Summary: Microalgae-based technologies, particularly high rate algal ponds (HRAP), show high efficiency, sustainability, and cost-effectiveness in treating wastewater with high removal efficiencies for organic matter and ammonium nitrogen. However, challenges such as large area requirements, high evaporative losses, ammonia inhibition, and poor light penetration still limit their full-scale application. Strategies for optimization, including modifications in bioreactor design and operation, are necessary to overcome these limitations and broaden their usage in treating high strength wastewaters.

REVIEWS IN ENVIRONMENTAL SCIENCE AND BIO-TECHNOLOGY (2021)

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Article Environmental Sciences

Innovative operational strategies in photosynthetic biogas upgrading in an outdoors pilot scale algal-bacterial photobioreactor

David Marin et al.

Summary: Three innovative operational strategies were evaluated to improve the quality of biomethane in an outdoors pilot scale photobioreactor interconnected to an external absorption unit, successfully achieving effective removal of CO2 and H2S. The study found that the concentrations of CO2 and CH4 in biomethane varied under different strategies tested, demonstrating the effectiveness of these innovative approaches in enhancing biogas quality.

CHEMOSPHERE (2021)

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Article Biochemical Research Methods

The role of microalgae in the bioeconomy

F. Gabriel Acien Fernandez et al.

Summary: The bioeconomy is crucial for addressing environmental challenges, and microalgae play a vital role in developing a modern bioeconomy with abundant applications and potential contributions to emerging sectors.

NEW BIOTECHNOLOGY (2021)

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Article Chemistry, Multidisciplinary

Development of a Strategy for Enhancing the Biomass Growth and Lipid Accumulation of Chlorella sp. UJ-3 Using Magnetic Fe3O4 Nanoparticles

Feng Wang et al.

Summary: The study shows that utilizing Fe3O4 nanoparticles can significantly increase the biomass and total lipid production of microalgae. By initially exposing the algae to low concentrations of Fe3O4 nanoparticles and then treating them with higher concentrations, growth and lipid accumulation can be effectively promoted.

NANOMATERIALS (2021)

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Review Biotechnology & Applied Microbiology

Current perspectives on integrated approaches to enhance lipid accumulation in microalgae

Jyoti Rawat et al.

Summary: In recent years, research on renewable bioenergy or biofuels has been growing, with a focus on microalgae as a third-generation biofuel feedstock. Efforts are concentrated on increasing lipid productivity and biodiesel production efficiency in microalgae through various cultivation conditions, stress factors, and modern techniques.

3 BIOTECH (2021)

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Review Energy & Fuels