Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 30222
A Life Cycle Assessment (LCA) of Aluminum Production Process

Authors: Alaa Al Hawari, Mohammad Khader, Wael El Hasan, Mahmoud Alijla, Ammar Manawi, Abdelbaki Benamour

Abstract:

The production of aluminum alloys and ingots – starting from the processing of alumina to aluminum, and the final cast product – was studied using a Life Cycle Assessment (LCA) approach. The studied aluminum supply chain consisted of a carbon plant, a reduction plant, a casting plant, and a power plant. In the LCA model, the environmental loads of the different plants for the production of 1 ton of aluminum metal were investigated. The impact of the aluminum production was assessed in eight impact categories. The results showed that for all of the impact categories the power plant had the highest impact only in the cases of Human Toxicity Potential (HTP) the reduction plant had the highest impact and in the Marine Aquatic Eco-Toxicity Potential (MAETP) the carbon plant had the highest impact. Furthermore, the impact of the carbon plant and the reduction plant combined was almost the same as the impact of the power plant in the case of the Acidification Potential (AP). The carbon plant had a positive impact on the environment when it come to the Eutrophication Potential (EP) due to the production of clean water in the process. The natural gas based power plant used in the case study had 8.4 times less negative impact on the environment when compared to the heavy fuel based power plant and 10.7 times less negative impact when compared to the hard coal based power plant.

Keywords: Life Cycle Assessment, aluminum production, Supply chain

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1091960

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 3792

References:


[1] Aluminium and aluminium alloys – life cycle of aluminium, European Aluminium Association, 2006. http://www.azom.com/ article.aspx?ArticleID=3529.
[2] IEA, 2009. Energy Technology Transitions for Industry: Strategies for the Nest Industrial Revolution. The International Energy Agency (IEA), Paris, France.
[3] "GCC aluminum production to hit 5m tones by 2014” by CW Staff on Feb. 4, 2013, ConstructionWeekOnline.com. http://www.constructionweekonline.com/article-20714-gcc-aluminiumproduction- to-hit-5m-tonnes-by-2014/
[4] Gulf industrial bulletin, issued by Gulf Organization for Industrial Consulting, volume 7, issue 69 (2006).
[5] Reginald B.H.T., Hsien H.K., An LCA study of a primary aluminum supply chain, Journal of cleaner production, 13, 2005, pp: 607 – 618
[6] Mcmilian, C.A., Keoleian, G.A., 2009. Not all primary aluminum is created equal: life cycle greenhouse gas emissions from 1995 to 2005. Environmental Science Technology 43, 1571 -1577.
[7] ISO 14044 (2006): Environmental management – Life cycle assessment – Requirements and guidelines, International Organization for Standardization (ISO), Geneva.
[8] Handbook on life cycle assessment operational guide to the ISO standards 2002, part2a ,41-63.