Energies | VOL. 8
Read

Energy Crop-Based Biogas as Vehicle Fuel—The Impact of Crop Selection on Energy Efficiency and Greenhouse Gas Performance

Publication Date Jun 18, 2015

Abstract

The production of biogas from six agricultural crops was analysed regarding energy efficiency and greenhouse gas (GHG) performance for vehicle fuel from a field-to-tank perspective, with focus on critical parameters and on calculation methods. The energy efficiency varied from 35% to 44%, expressed as primary energy input per energy unit vehicle gas produced. The GHG reduction varied from 70% to 120%, compared with fossil liquid fuels, when the GHG credit of the digestate produced was included through system expansion according to the calculation methodology in the ISO 14044 standard of life cycle assessment. Ley crop-based biogas systems led to the highest GHG reduction, due to the significant soil carbon accumulation, followed by maize, wheat, hemp, triticale and sugar beet. Critical parameters are biogenic nitrous oxide emissions from crop cultivation, for which specific emission factors for digestate are missing today, and methane leakage from biogas production. The GHG benefits were reduced and the interrelation between the crops changed, when the GHG calculations were instead based on the methodology stated in the EU Renewable Energy Directive, where crop contribution to soil carbon accumulation is disregarded. All systems could still reach a 60% GHG reduction, due to the improved agricultural management when digestate replaces mineral fertilisers.

Concepts

EU Renewable Energy Directive Greenhouse Gas Reduction Greenhouse Gas Vehicle Fuel Fossil Liquid Fuels Primary Energy Input Greenhouse Gas Benefits Greenhouse Gas Calculations Soil Carbon Accumulation Critical Parameters

Round-ups are the summaries of handpicked papers around trending topics published every week. These would enable you to scan through a collection of papers and decide if the paper is relevant to you before actually investing time into reading it.

Coronavirus Research Articles published between Jan 30, 2023 to Feb 05, 2023

R DiscoveryFeb 06, 2023
R DiscoveryArticles Included:  5

The Coronavirus Disease 2019 (COVID-19), caused by Severe Acute Respiratory Syndrome Coronavirus type 2 (SARS-CoV-2), belongs to emerging and reemergi...

Read More

Climate change Research Articles published between Jan 30, 2023 to Feb 05, 2023

R DiscoveryFeb 06, 2023
R DiscoveryArticles Included:  3

Introduction: The IOC and the Olympic Games have made a visible transition toward sustainability in the last two decades. While the IOC has acknowledg...

Read More

Gender Equality Research Articles published between Jan 30, 2023 to Feb 05, 2023

R DiscoveryFeb 06, 2023
R DiscoveryArticles Included:  5

Gender inequity in Science, Technology, Engineering, and Medicine (STEM) fields, including parasitology, continues to limit the participation of women...

Read More

Coronavirus Pandemic

You can also read COVID related content on R COVID-19

R ProductsCOVID-19

ONE PROBLEM . ONE PURPOSE . ONE PLACE

Creating the world’s largest AI-driven & human-curated collection of research, news, expert recommendations and educational resources on COVID-19

COVID-19 Dashboard

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on “as is” basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The Copyright Law.