A conceptual scenario for the use of microalgae biomass for microgeneration in wastewater treatment plants

Soares, Renan Barroso; Martins, Márcio Ferreira; Gonçãlves, Ricardo Franci

doi:10.1016/j.jenvman.2019.109639

Cited by 30 publications

(10 citation statements)

References 108 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…From the statistical data on electricity in Italy, 16,778.7 GWh of electricity were consumed in Campania in 2018 (Terna SpA, 2018). As highlighted by Soares et al (2019), which shows the corresponding electricity production value equal to 0.83 kWh/kg of algal biomass, it appears that in Campania it would be possible to obtain a saving of approximately 1% of the total consumed electricity in the region. Although the percentage of electricity is low, there are still both environmental and economic benefits due to the recovery of wastewater no longer considered as waste and to the production of electricity from renewable sources, avoiding the consumption of fossil fuels.…”

Section: Economic Technological and Environmental Scenarios Of Propos...mentioning

confidence: 99%

“…Nevertheless, wastewater treatment through ion exchange process was chosen as Scenario C, as the study demonstrates that, with this technology, a larger amount of nitrogen is removed than conventional and Anammox technologies and it has a large potential to provide optimal economic and environmental performance through design and process optimization. Finally, the fourth scenario, namely Scenario D, is built on a study by Soares et al (2019) which describes the state of the art of wastewater treatment with microalgae, and their potential generation of electricity. In particular, the production of algal biomass through wastewater treatment is examined, which is subsequently used to produce biogas.…”

Section: Design Of Viable Circular Wastewater Scenariosmentioning

confidence: 99%

“…However, the highest energy demand of the entire production system occurs in the recovery phase of microalgae biomass and the economic cost of recovery accounts 30% of the total cost of biomass production. Therefore, the cultivation of microalgae for biofuel production is not yet economically viable and the industry's biggest challenge is the development of economically-sound recovery methods (Soares et al, 2019). Finally, microalgae can be grown in wastewater as they can degrade organic pollutants and produce biomass (Matamoros and Rodríguez, 2016).…”

Section: Economic Technological and Environmental Scenarios Of Propos...mentioning

confidence: 99%

See 2 more Smart Citations

Challenges and opportunities for more efficient water use and circular wastewater management. The case of Campania Region, Italy

Colella

Ripa

Cocozza

et al. 2021

Journal of Environmental Management

View full text Add to dashboard Cite

Section: Economic Technological and Environmental Scenarios Of Propos...mentioning

confidence: 99%

Section: Design Of Viable Circular Wastewater Scenariosmentioning

confidence: 99%

Section: Economic Technological and Environmental Scenarios Of Propos...mentioning

confidence: 99%

See 1 more Smart Citation

Challenges and opportunities for more efficient water use and circular wastewater management. The case of Campania Region, Italy

Colella

Ripa

Cocozza

et al. 2021

Journal of Environmental Management

View full text Add to dashboard Cite

“…Microalgae do not have a stem, root, and leave like plants, however it uses CO2, sunlight, and water to grow. Depending on their growth status and species, microalgae generally consist of protein (20-50%), lipid (9.5-42%), and carbohydrate (17-57%) [30]. According to the energetic characteristics, the microalgae sample that had a HHV (dry basis) of 23.48 MJ/kg was preferred for the gasification process.…”

Section: Sample Characterizationmentioning

confidence: 99%

Investigation of Microalgae Gasification Under Steam Atmosphere in Downdraft Gasifier by Using Aspen Plus®

KEKİK

Özveren

2022

Eskişehir Technical University Journal of Science and Technology a - Applied Sciences and Engineering

View full text Add to dashboard Cite

Energy production is facing the environmental and economic issues due to growing population and uncertainties about the fossil fuels. These concerns prompt the researchers to find widely available and renewable alternative such as biomass instead of the fossil fuels. Microalgae is one of the promising biofuels owing to its rapid growth speed and higher calorific value. Steam gasification is an alternative way converting biomass to syngas with higher H2 and lower CO2 content compared with the other thermochemical conversion processes. In the present work, the downdraft gasifier model was developed by using Aspen Plus® program that has the capability to investigate the performance of microalgae gasification. Before the performance evaluation of the gasification, validation of the model successfully completed and exit gas compositions of H2, CO2, CO and CH4 were found very close for experimental study and the developed model. Effects of the main parameters of the process such as steam/biomass ratio and gasification temperature were assessed on the syngas composition and higher heating value (HHV) of syngas. The obtained results were stated that the increment in the temperature showed great effect on the H2 and CO compositions of syngas, they increased from 50.72% to 56.47% and 28.11% to 28.84% respectively. The simulation results also illustrated that the rising of the S/B ratio was favored the steam related reactions and increased the H2 content in syngas. However decreasing trend of the CH4 caused reducing of the HHV of syngas as a function of temperature and steam as well.

show abstract

“…Co-generation systems in buildings consist of small-to-medium scale systems for combined heat and power generation (CHP), namely, micro-CHP; these systems include an internal combustion engine coupled to a generator that recovers the waste heat to produce electricity [23]. The heat-generation may use conventional fossil fuels [24], biogas [25], biomass [26,27], and hydrogen [28]. As popular technologies for electricity generation, see the Stirling engines [29], and Organic Rankine Cycles (ORC) [30].…”

mentioning

confidence: 99%

Sustainability of Shallow Geothermal Energy for Building Air-Conditioning

2021

View full text Add to dashboard Cite

Geothermal heat pumps have a widespread diffusion as they are able to deliver relatively higher energy output than other systems for building air-conditioning. The exploitation of low-enthalpy geothermal energy, however, presents crucial sustainability issues. This review investigates the primary forms of the environmental impact of geothermal heat pumps and the strategies for their mitigation. As life-cycle analyses shows that the highest impacts arise from installation and operation stages, most optimization studies focus on system thermodynamics, aiming at maximizing the energy performance via the optimization in the design of the different components interacting with the ground and serviced building. There are environmental studies of great relevance that investigate how the climate and ground properties affect the system sustainability and map the most suitable location for geothermal exploitation. Based on this review, ground-source heat pumps are a promising technology for the decarbonization of the building sector. However, a sustainable design of such systems is more complex than conventional air-conditioning systems, and it needs a holistic and multi-disciplinary approach to include the broad environmental boundaries to fully understand the environmental consequences of their operation.

show abstract

A conceptual scenario for the use of microalgae biomass for microgeneration in wastewater treatment plants

Cited by 30 publications

References 108 publications

Challenges and opportunities for more efficient water use and circular wastewater management. The case of Campania Region, Italy

Challenges and opportunities for more efficient water use and circular wastewater management. The case of Campania Region, Italy

Investigation of Microalgae Gasification Under Steam Atmosphere in Downdraft Gasifier by Using Aspen Plus®

Sustainability of Shallow Geothermal Energy for Building Air-Conditioning

Contact Info

Product

Resources

About