Life cycle of biomethane and hydrogen pathways in the European Union Greenhouse gas emissions

GHG strength range AR4 Eight hydrogen pathways using 100 years of GWP. Credit – International Pure Transport Council

New Life Cycle Analysis of Potential Low-Greenhouse-Gas Alternatives for Hydrogen Production In Europe, hydrogen alone can be produced without renewable energy, and even with carbon storage and storage, hydrogen pathways are associated with fossil fuels. Greenhouse-gas (GHG) Strength to prevent EU from contributing to climate change goals. The study, from the International Committee of the Red Cross (ICRC), as well as waste-based biomethane production methods, generally had negative GHG strengths, but were prone to high distrust.

The analysis shows that renewable energy regulation (REDII), which governs the development of renewable energy in all sectors of the economy in Europe, is being developed. The review is part of the EU’s “Suitable for 55” package, which aims to reduce the GHG emissions by 55% by 2030 and to reduce the EU’s greenhouse gas emissions by 55%. To achieve carbon neutrality by 2050.

According to ICT researcher Yuanrong Hou, “Hydrogen from renewable energy is essentially ‘climate-clean’ from production to use. And the only viable alternative is zero-carbon hydrogen in Europe.

The analysis found a wide range of GHG strengths in eight hydrogen production methods in the EU, each using different warehouses or processes. Some hydrogen methods involve the production of biomethane first and then the conversion to hydrogen. In GHG strengths, the low-to-high formulations include sewage sludge biomethane, renewable electricity, biomass gas filtration, natural gas from carbon storage and storage (CCS), LFG biomethane, manure biomethane, 2030 EU grid electricity and CCS coal. . GHG strength is measured when GHGs are released by the energy unit.

In REDII, only three of these pathways meet the 70% GHG reduction requirement for hydrogen (compared to petroleum) – sewage sludge, renewable electricity and forest biomass (see image). Of the eight ways, the highest GHG levels are made from coal CCS and hydrogen by 2030 EU grid electricity. These do not meet the 70% GHG reduction requirement.

The impact of production processes on GHG strength is clear in the study: Hydrogen from solar and wind-powered electrolysis has a much lower GHG strength than when it came from the proposed EU 2030 power mix.

The study found that wastewater-based products had a lower GH strength. However, sulfur is not a safe alternative to hydrogen production because of the risk of methane leakage during the life cycle. Because methane is a powerful greenhouse gas that has a significant impact on the climate, even small fluids in the production phase can compensate for the potential climate benefits of hydrogen. In fact, the study found that any hydrogen-based alternative to methane (natural gas and biomethane routes) could be a major risk factor for leakage.

In addition to hydrogen production, the study examined biomethane production from four warehouses: floodwaters, ground gas, fertilizer, and silage maize. Biomethane can provide significant emission reductions, but like methane hydrogen, various alternatives to its production are also at risk.

“Policymakers should carefully consider greenhouse gas profiles for alternatives to hydrogen production and use,” Ju said. Some promising alternatives can be detrimental to the weather unless processes work properly in their life cycle – this is rare.

The study urges EU policymakers not to add fossil-based hydrogen to the RED II review as a viable option or to promote it in any other policy. Instead, EU policymakers must accept the RED II Regulations, which require the production of electrolysis hydrogen with additional renewable electricity. It also recommends that policymakers use strong and clear life cycle analysis to evaluate hydrogen production methods. These recommendations will help ensure that AC policy only supports gas routes that are in line with the deep decarbonation vision.

“From the Renewable Electric Hydrogen Policy, the policy is hitting the ground running,” said Juan. Unexpected weather damage can have serious consequences, including minor hazards.


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More info:
The study, entitled “The Life Cycle of Greenhouse Gas Emissions for Biomethan and Hydrogen Roads” at theicct.org/publications/lca-b… ne-hydrogen-eu-oct21

Presented by the International Council on Clean Transport

ReferenceLife cycle of biomethane and hydrogen pathways in the European Union Greenhouse gas emissions (2021, October 13) October 13, 2021 from https://techxplore.com/news/2021-10-life-cycle-greenhouse-gas-emions -biomethane.html

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