Abstract_Nutchapon_GPE18_April 2018_final.pdf (208.05 kB)

A comparative life cycle assessment approach of 5 alternative technologies for converting municipal solid waste (MSW) into chemicals and electricity in the UK

Download (208.05 kB)
conference contribution
posted on 04.05.2018, 10:20 by Nutchapon Chiarasumran, Richard Blanchard, Brahim Benyahia
This study develops a systematic life cycle assessment approach for 5 alternative technologies that can be used to convert municipal solid waste (MSW) into chemicals and electricity. Particular attention is given to the combustion and gasification as the main conversion processes and the UK’s MSW is used here as the case study. The investigation focusses on 5 different scenarios: (1) combustion and electricity generation, (2) gasification and electricity generation, (3) methanol synthesis from syngas with electricity co-production (4), dimethyl ether (DME) synthesis from produced methanol by syngas (indirect synthesis) and power generation, and (5) DME synthesis from syngas (direct synthesis) and electricity co-production. The unreacted gas left from the methanol or DME synthesis process can also be employed as a fuel gas for the electricity generation. As the result, it is interesting to find out which method is the most appropriate and optimal to convert the UK’s MSW. The environmental impacts are evaluated by IMPACT2002+ method using Ecoinvent 3 as a database. The results show that scenario 5 (direct DME synthesis with electricity co-production) causes the least climate change impact (532 kg CO2 eq.) and resource impact (-5560 MJ primary), followed by scenario 4 (544 kg CO2 eq. and -5250 MJ primary), scenario 3 (569 kg CO2 eq. and - 4820 MJ primary), scenario 1 (591 kg CO2 eq. and -3880 MJ primary) and scenario 2 (881 kg CO2 eq. and -3900 MJ primary) respectively. However, the study also demonstrates that the scenarios involving methanol and DME synthesis have more impacts on human health category due to the required metal oxide catalysts. The impact of a change in total yield of methanol and DME synthesis is also investigated and analysed along with the associated potential environmental benefits.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

6th International Congress on Green Process Engineering

Citation

CHIARASUMRAN, N., BLANCHARD, R.E. and BENYAHIA, B., 2018. A comparative life cycle assessment approach of 5 alternative technologies for converting municipal solid waste (MSW) into chemicals and electricity in the UK. Presented at the 6th International Congress on Green Process Engineering, Toulouse, France, 3-6th June.

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

28/03/2018

Publication date

2018

Notes

This is a conference paper.

Publisher version

Language

en

Location

Toulouse, France

Exports

Loughborough Publications

Exports