Journal of CO2 Utilization | VOL. 20
Read

2nd law analysis of Portuguese municipal solid waste gasification using CO 2 /air mixtures

Publication Date Jul 1, 2017

Abstract

Abstract Urbanization, mainly caused by population growth and industrialization, is causing serious environmental problems. Municipal solid waste (MSW) is one of the major challenges facing the world today. In Portugal the growing volume of MSW has become a central problem for municipalities, due to lack of space and the high costs to solve it. Gasification is starting to be considered as a possible alternative when dealing with municipal wastes. However, first is necessary to overcome some concerns related to the process, such as tar mitigation and carbon dioxide emissions. The presented study focuses on a second law analysis conducted on Portuguese MSW gasification using carbon dioxide and air mixtures. To do so, a previously developed numerical model, validated using data from a semi-industrial plant, was used to assess carbon dioxide injection. First, influence of operational conditions on syngas exergy values was studied. Exergy values increased close to 6% when equivalent rate was increased from 0.15 to 0.25, steadily dropping with further increase. On the other hand, exergy values appear to steadily increase with carbon dioxide addition (14% when increased from 0 to 1) and reactor temperature (40% when increased from 700 to 900 °C). Then, the influence of temperature and CO 2 /MSW ratio on exergy efficiency, tar efficiency and carbon dioxide conversion was investigated. Results showed that both parameters have a positive effect on exergy efficiency. Conversely, CO 2 /MSW ratio and gasification temperature lead to decr...

Concepts
Powered ByUnsilo

Tar Efficiency
Municipal Solid Waste Ratio
Municipal Waste
Municipal Solid Waste
Exergy Values
Municipal Solid Waste Gasification
Carbon Dioxide
Exergy Efficiency
Air Mixtures
Carbon Dioxide Addition

Introducing Weekly Round-ups!Beta

Powered by R DiscoveryR Discovery

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.

Climate change Research Articles published between Jun 13, 2022 to Jun 19, 2022

R DiscoveryJun 20, 2022
R DiscoveryArticles Included:  5

Understanding the effects of the snow ratio on glacier mass balance under variable climatic conditions is crucial for predicting how glaciers will res...

Read More

Good health Research Articles published between Jun 13, 2022 to Jun 19, 2022

R DiscoveryJun 20, 2022
R DiscoveryArticles Included:  5

In West Africa, the various types of diabetes according to WHO or the American Diabetes Association (ADA) are endemic; a particular type referred to a...

Read More

Gender Equality Research Articles published between Jun 13, 2022 to Jun 19, 2022

R DiscoveryJun 20, 2022
R DiscoveryArticles Included:  5

This study aims to evaluate changes in the presence of women on Spanish boards after the Unified Good Governance Code of Listed Companies (2006) and t...

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