A decision-support framework for industrial waste management in the iron and steel industry: A case study in Southern Africa

Schoeman, Yolandi; Oberholster, Paul Johan; Somerset, Vernon

doi:10.1016/j.cscee.2021.100097

Cited by 12 publications

(8 citation statements)

References 22 publications

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“…The heat required for these processes results from arc furnaces powered by energy sources such as coals, fuels, and even hydrogen (Ohnuki et al, 1994). Currently, the production of steel in Southern Africa is through ferrous scraps as raw material (Chansa et al, 2019;Schoeman, Oberholster and Somerset, 2021).…”

Section: Production Of Green Steel and Green Ironmentioning

confidence: 99%

An overview of the socio-economic impacts of the green hydrogen value chain in Southern Africa

Hamukoshi

Mama

Shimanda

et al. 2022

J. energy South. Afr.

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The green hydrogen economy offers synthetic green energy with significant impacts and is environmentally friendly compared to current fossil-based fuels. Exploration of green hydrogen energy in Southern Africa is still in the initial stages in many low-resourced settings aiming to benefit from sustainable green energy. At this early stage, potential benefits to society are yet to be understood. That is why the socio-economic impact of green hydrogen energy must be explored. This paper reviews the current literatures to describe the potential socio-economic effects in the Southern African Development Community (SADC). The review supports the view that green hydrogen will be beneficial and have great potential to revolutionise agricultural and industrial sectors, with advanced sustainable changes for both production and processing. This paper also examines how sustainable green hydrogen energy production in Southern Africa will provide economic value in the energy export sector around the world and support climate change initiatives. Further, it discusses the impacts of the green hydrogen value addition chain and the creation of green jobs, as well as the need for corresponding investments and policy reforms. It is also noted that the green hydrogen economy can contribute to job losses in fossil fuel-based industries, so that the workforce there may need re-skilling to take up green jobs. Such exchanges may deter efforts towards poverty alleviation and economic growth in SADC.

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Section: Production Of Green Steel and Green Ironmentioning

confidence: 99%

An overview of the socio-economic impacts of the green hydrogen value chain in Southern Africa

Hamukoshi

Mama

Shimanda

et al. 2022

J. energy South. Afr.

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“…Literature reveals that formulation designers have successfully used industrial waste in automotive friction materials and found that the inclusion of waste materials affected the braking performance in beneficial means. [12][13][14][15][16][17][18][19][20][21][22][23] Mohanty and Chugh [15] reported that the inclusion of flyash in brake lining resulted in increased wear resistance and friction response with the least susceptibility to the sequel, judder, noise propensity, and creep groan. Dadkar et al [16] studied the influence of flyash and phenolic resin combination of tribological properties of hybrid friction composites.…”

Section: Introductionmentioning

confidence: 99%

“…Steel production industries are a resource-intensive sector that generates many byproducts. [23] Slag is a significant waste material for steel production sectors, with around 600 million tons of slag produced globally by steel mills. [24] However, a significant amount of the slag waste created is employed as a raw material in the building and road construction sectors.…”

Section: Introductionmentioning

confidence: 99%

Tribological performance evaluation of slag waste filled phenolic composites for automotive braking applications

Rajan

Tyagi

Pruncu³

et al. 2022

Polymer Composites

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Slag waste‐filled phenolic resin‐based automotive brake friction composites were formulated, fabricated, followed by mechanical, physical characterization, and tribo‐evaluation. According to economic commission for Europe regulation, the tribological performance of the composites was evaluated on a Krauss friction‐testing machine. The increase in slag waste content led to increased physical properties such as density, porosity, ash contents, and compressibility, whereas hardness, acetone extraction, and shear strength increased with increased phenolic resin content. The fade and friction performance has been observed to be highly dependent on the slag waste content, that is, both followed a consistent decrease with the increase in the phenolic resin content, whereas the frictional fluctuations have been observed to decrease with the increase in slag waste content. In particular, the composites containing 65 wt% slag waste and 5 wt% phenolic resin showed the highest friction coefficient (0.406), lowest fade (20.44%) and frictional fluctuation (0.209), but the wear (10.80 g) and disc temperature rise (618°C) remains highest. Composite with the lowest slag waste content of 50 wt% combined with the highest phenolic resin of 20 wt% showed higher recovery performance (120.63%), lowest wear (4.45 g) and disc temperature rise (536°C), but exhibits lowest friction coefficient (0.315) and friction stability (0.79) along with highest friction variability (0.60) and fluctuations (0.238). Friction and wear data analysis revealed the predominance of the fade factor for friction performance while the fade factor and disc temperature‐induced results significantly influence the wear performance. The worn surface micrograph showed higher phenolic resin‐filled composites form smooth contact plateaus that successfully reduced wear.

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“…Challenges prevalent in the sector range from structural problems and persistent excess capacity to market demand negatively impacting trade and employment (Department of Trade and Industry 2018). The effects of the steel crisis are evident across the value chain, from mining primary steel mills to domestic manufacturers struggling to compete, sustaining jobs and the decline in domestic primary steelproduction competitiveness (Schoeman, Oberholster & Somerset 2021;Van der Walt 2012). lockdown measures had devastating consequences for the steel sector, with an estimated R1bn being lost in direct cash-flow revenue and labour costs.…”

Section: Introductionmentioning

confidence: 99%

Lean practices and supply-chain competitiveness in the steel industry in Gauteng, South Africa

Khoza

Mafini²,

Loury-Okoumba³

2022

SAJEMS

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Background: The steel industry in South Africa suffered significantly when imported steel took over the market and collapsed big players in the industry in the last decade. The industry requires new business models and paradigms to improve its supply-chain strategies and adopt international standards such as lean supply-chain management practices to become competitive.Aim: In the study the relationships are investigated between lean supply-chain management practices, lean culture, and supply-chain competitiveness in the steel industry in Gauteng Province.Setting: The study was conducted in the steel manufacturing industry in the Gauteng Province, South Africa.Methods: In the study a quantitative method involving 265 supply-chain and operations managers and practitioners was employed. The Statistical Packages for Social Sciences (SPSS version 27.0) was used to analyse the data in which correlations and regression analysis were employed to test the research hypotheses.Results: The results of the study showed that four lean practices, namely Just in Time, Total Quality Management, Strategic Partnerships and Waste Elimination, all predict the establishment of a lean culture. However, Human Resource Management was statistically insignificant. The results further showed that a lean culture predicts competitiveness in the steel supply chain.Conclusion: The adoption of lean supply chain management in the steel industry is an essential contributor to its success.

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A decision-support framework for industrial waste management in the iron and steel industry: A case study in Southern Africa

Cited by 12 publications

References 22 publications

An overview of the socio-economic impacts of the green hydrogen value chain in Southern Africa

An overview of the socio-economic impacts of the green hydrogen value chain in Southern Africa

Tribological performance evaluation of slag waste filled phenolic composites for automotive braking applications

Lean practices and supply-chain competitiveness in the steel industry in Gauteng, South Africa

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