Direct biogas methanation via renewable-based Power-to-Gas: Techno-economic assessment based on real industrial data

Energy Conversion and Management, Journal Year: 2025, Volume and Issue: 332, P. 119775 - 119775

Published: April 5, 2025

Language: Английский

A Life Cycle Assessment of Methane Slip in Biogas Upgrading Based on Permeable Membrane Technology with Variable Methane Concentration in Raw Biogas

Sustainability, Journal Year: 2024, Volume and Issue: 16(8), P. 3323 - 3323

Published: April 16, 2024

While energy-related sectors remain significant contributors to greenhouse gas (GHG) emissions, biogas production from waste through anaerobic digestion (AD) helps increase renewable energy production. The players focus efforts on optimising the AD process maximise methane content in biogas, improving known technologies for and applying newly invented ones: H2 addition technology, high-pressure bioelectrochemical of additives, others. Though increased concentration gives benefits, upgrading still needs reach a much higher replace natural gas. There are many technologies, but almost any has slip. This research conducted life cycle assessment (LCA) membrane-based evaluating biomethane with variable concentrations. results showed that slightly increases specific electricity consumption treatment, heightens slip off-gas unit. However, LCA analysis positive environmental impact treating increasing way, gave broader comprehension technology GHG emissions offered valuable insights into implications

Language: Английский

Anaerobic Co-Digestion of Food Waste and Microalgae at Variable Mixing Ratios: Enhanced Performance, Kinetic Analysis, and Microbial Community Dynamics Investigation

Applied Sciences, Journal Year: 2024, Volume and Issue: 14(11), P. 4387 - 4387

Published: May 22, 2024

There is an urgent need for clean recycling strategies to address the increase in food waste (FW) and harvesting of microalgae (MA). In this study, biogas production potential operational stability were evaluated by testing combinations FW MA mixed at five different ratios. Co-digestion improved substrate biodegradability, achieving a decomposition rate 0.45/d (FW/MA = 1:1), which 1.25 1.55 times higher than that or alone. resulted synergistic effect, improving yield 2.04–26.86%. Four mathematical models applied estimate biological degradation kinetics, Cone model performed better other terms reliability accuracy. The abundance Bacteroidetes, Firmicutes, Synergistetes peaked FW/MA 1:1. At same ratio, genera Methanospirillum, Methanocorpusculum, Methanomethylovorans also found have increased abundance. optimal ratio was be 1:1 co-digestion MA, feasible approach simultaneous bioenergy biomass co-disposal.

Language: Английский