Comparison of sub-processes and final products of iron and steel production with life cycle assessment

Download

index.pdf

Date

2011

Author

Ölmez, Gülnur

Metadata

Show full item record

Item Usage Stats

688
views

691
downloads

Iron and steel production is one of the most resource and energy demanding industries around the world. Throughout the life cycle of iron and steel products, the intensive use of raw materials and energy results in contributions to a wide range of environmental impacts. This study conducts a life cycle assessment (LCA) for iron and steel production in Turkey using SimaPro software and IMPACT 2002+ impact assessment method with the purpose of comparing the impacts of life cycle stage (coke making, sintering, iron making, steel making) and final products (billet, slab, hot rolled wire rod, hot rolled coil). The system boundary was set as cradle-to-gate, the functional unit was selected as 1 ton of product, and the study was conducted using the inventory data collected from one of the three integrated iron and steel facilities representing the majority of the industry in Turkey. Different production scenarios for the final products were also evaluated to see the variation in the total impacts. The results indicated that, liquid steel production process exhibited the highest total environmental impact, which was followed by sinter production. Coke production process showed the highest impact on depletion of non-renewable energy sources. The comparison of the impacts for different final products revealed that hot rolled coil causes the highest total environmental impact. Moreover, the environmental impact of mechanical workshop of the facility was found negligible when compared to the production processes.

Subject Keywords

Environmental Pollution., Iron, Steel, Metal-work.

URI

http://etd.lib.metu.edu.tr/upload/12613920/index.pdf
https://hdl.handle.net/11511/20806

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Optimization of the lubricating oil inventory policy applied in a mining company Şenses, Sena; Gölbaşı, Onur; Bakal, İsmail Serdar (2021-02-01) The mining industry should sustain mass and continuous production with an essential contribution of high-capacity machinery. Therefore, spare parts inventory management is vital in ensuring the intended mining production rate as an integral part of maintenance policies. In this paper, a mixed-integer model is presented to solve a multi-item and multi-supplier spare parts inventory model. This model is addressed to a lubricating oil inventory problem in one of the biggest multi-process mining companies in Tu...
Experimental and numerical investigation of cfs-concrete composite trusses Güldür, Hazal; Baran, Eray; Department of Civil Engineering (2018) Cold-formed steel (CFS) structural systems have been intensely studied especially due to the economy and ease of implementation that they provide. A common failure mode of CFS members is the local instability of the section. The aim of this study is to control the local instability in CFS floor trusses by providing concrete infill inside compression chord members. Numerical and experimental studies were conducted in order to investigate the flexural behavior of steel-concrete composite trusses made of CFS s...
Analysis of the VIT1 Promoter Activity in Developing Arabidopsis thaliana Plants Eroğlu, Seçkin (2021-10-01) Iron (Fe) deficiency in plants is one of the widespread problems limiting agricultural production. Generating crops more tolerant to Fe deficiency by genetic engineering or breeding is of great interest but challenging due to the knowledge gaps in general plant Fe homeostasis. Although several genes involved in Fe homeostasis have been identified, characterization of their roles is mainly limited to specific organs at specific developmental stages of the plant, where their mutants show the most striking phe...
Evaluation of Circular Construction Works During Design Phase: An Overview of Valuation Tools Kayaçetin, Nuri Cihan; Verdoodt, Stijn; Lefevre, Lode; Versele, Alexis (2022-01-01) The construction industry is one of the largest producers of waste. The Circular Economy Action Plan of the EU aims to tackle this issue and aspires to enhance the sustainability of the construction industry by adopting more circular principles and bio-based material use. For this purpose, an approach is being developed that facilitates coherence between technical, economical, legal, social aspects, and business models for circular design and building with bio-based materials in the Interreg Circular Bio-Ba...
Identification of waste management strategies and waste generation factors for thermal power plant sector wastes in Turkey Demir, Cansu; Yetiş, Ülkü; Ünlü, Kahraman (SAGE Publications, 2019-03-01) Thermal power plants are of great environmental importance in terms of the huge amounts of wastes that they produce. Although there are process-wise differences among these energy production systems, they all depend on the logic of burning out a fuel and obtaining thermal energy to rotate the turbines. Depending on the process modification and the type of fuel burned, the wastes produced in each step of the overall process may change. In this study, the most expected process and non-process wastes stemming ...

Citation Formats

G. Ölmez, “Comparison of sub-processes and final products of iron and steel production with life cycle assessment,” M.S. - Master of Science, Middle East Technical University, 2011.