Tag: Waste-to-Energy
Valorization of waste biomass via an integrated gasification system for the co-production of dimethyl ether and urea
Energy and chemicals such as urea have a large carbon footprint associated to greenhouse gas emissions and must be developed sustainably for the sake of society. This work presents the simulations of a system to produce Dimethyl Ether (DME) and urea from the air gasification of waste biomass coupled with carbon capture technology. The potential of different waste biomasses (avocado stone, palm tree husk and sugar cane bagasse) in the co-production of DME and urea was assessed in terms of reaction,
Renewable Energies and Biochar: A Green Alternative for Reducing Carbon Footprints Using Tree Species from the Southern Andean Region of Ecuador
The urgent need for sustainable strategies to mitigate climate change has spurred the development of efficient carbon sequestration methods with minimal greenhouse gas emissions, presenting promising opportunities to produce biochar and, with this bioproduct, enhance crop productivity. Therefore, this research aimed to evaluate the carbon footprint produced by the low-temperature slow pyrolysis of biomass obtained from the pruning residues of four tree species present in parks and gardens of the
Biorefinery of avocado seed waste for sustainable production of bioplastics and functionalized silver nanocomposites
This study examines the potential of utilizing avocado seeds (AS) waste for sustainable polyhydroxyalkanoates (PHA) production and green synthesis of silver nanoparticles (AgNPs) in an integrated biorefinery approach. Initially, phytochemical compounds were extracted from AS biomass using solvent extraction. The residual AS biomass underwent hydrolysis through acid pretreatment and was subsequently utilized as a sustainable carbon source for PHA synthesis by Lysinibacillus sp. RGS. Various operational
Conical spouted bed combustor to obtain clean energy from avocado waste
The advantages of spouted bed technology for waste treatment are linked to the high excess of renewable biomass waste generated by the large worldwide consumption of avocado. Therefore, the applicability of avocado waste as fuel in a novel conical spouted bed combustor was investigated. The solid cyclic movement in this reactor innovatively promotes better mass and heat transfer, as well as better energy exploitation of the waste. Local heat transfer coefficients were experimentally determined in
Avocado spatial expansion in Mexico: Could the energy use of pruning residues offset GHG emissions?
Avocado orchards in Mexico are constantly being expanded to meet the increasing demand for the fruit in the national and international markets. The land-use change (LUC) caused by this expansion has numerous negative impacts, including greenhouse gas (GHG) emissions due to the loss of forest cover and the open burning of biomass. The present study is a timely evaluation of a complex environmental problem through an integrative approach. We analyze LUC between the years 1974–2017 at a local scale