Alfonso García

• University of Valladolid

Pig farms have been identified as one of the most important sources of greenhouse gas emissions. This study demonstrates the production of vehicle biomethane in a demonstration prototype plant based on photosynthetic upgrading technology, where the CO2 and H2S present in biogas are consumed by a microalgae culture. The information collected during...

Due to the growing interest in using biomass as a renewable energy source, this study presents a comparative analysis between two prominent biomass conversion technologies-anaerobic digestion and biomass pyrolysis -focused on wheat straw biomass. The objective of this study is to evaluate and compare the efficiency, energy output, and environmental...

Anaerobic digestion of animal manure generates biogas and removes biodegradable organic matter, while most of the nitrogen and phosphorous remains at very high levels after the process. A subsequent microalgae culture in the digestate provides nutrient uptake at very low operational and installation costs. However, the dark color of manure digestat...

As the global population continues to surge, the agricultural landscape, particularly livestock farming, is emerging as a critical and indispensable sector within the food industry. However, the expansion of large-scale farms is accompanied by a significant increase in the production of organic waste, leading to a rise in diffuse greenhouse gas emi...

The primary sector, particularly agriculture, plays a significant role in greenhouse gas emissions, with methane and ammonia being notable contributors. Acknowledging the pressing need to tackle these emissions, this study focuses on data from the LIFE Smart Agromobility project in Spain, funded by the European Commission under the LIFE 2019 progra...

Cereal straw stands out as one of the most abundant and globally distributed agricultural residues. Traditional applications cope with a limited amount of production, leaving the remainder in the field for natural decomposition. Managing cereal straw through controlled biological transformation under anaerobic conditions holds the potential to gene...

Wine lee generation, a by-product of the wine industry, implies economic challenges for producers in terms of management due to its high organic load and low pH value. Biological treatment based on controlled anaerobic digestion may emerge as a viable management alternative given its promising potential for biogas production thanks to the organic c...

By the year 2020, 90% of the population with access to electricity worldwide was surpassed. However, the reality is very different for many countries, especially for those on the African continent that had more than 572 million people without electricity service at the end of 2019. This work studies the implementation of an isolated microgrid activ...

Microalgae cultures offers solutions for pollution control at water reuse. The ability to nutrient and heavy metal up-take along with disinfection is a considerable more sustainable solution than conventional wastewater treatment processes based on mechanical aeration. Since microalgae have evolved together with bacteria in natural aquatic environm...

The current sustainable transition plans seek to pursuit energy supply security with low carbon emissions. Although electrification is presented as a key factor to decarbonize demanding sectors (transport, buildings, and industry), energy provided by fuel combustion will be essential to cope with future demands. In this sense, it is necessary to re...

Biofuels are getting attraction as an alternative to fossil fuels due to their environmental benefits and their renewable nature. Consumption of oil derivatives in combustion engines and boilers has increased carbon dioxide, resulting in the global warming effect. Besides this, oil production is reaching the near-term peak, and the subsequent decli...

BACKGROUND The performance of microalgal and bacterial systems devoted to wastewater treatment might be limited by the poor settling of microalgal biomass and the inhibition of nitrifying bacteria under high irradiance conditions. This work implemented a photo‐sequencing batch bioreactor (PSBR) treating medium‐ and low‐strength wastewaters. The imp...