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Wzrost korzystny dla wszystkich

Nicholas Stern

ACADEMIA. Magazyn Polskiej Akademii Nauk | 2019 | Nr 1 (6) 2019 Zmiany Klimatu Wyd. Spec. | 16-21

Keywords gazy cieplarniane ochrona klimatu

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Abstract

The Bulletin of the Polish Academy of Sciences: Technical Sciences (Bull.Pol. Ac.: Tech.) is published bimonthly by the Division IV Engineering Sciences of the Polish Academy of Sciences, since the beginning of the existence of the PAS in 1952. The journal is peer‐reviewed and is published both in printed and electronic form. It is established for the publication of original high quality papers from multidisciplinary Engineering sciences with the following topics preferred: Artificial and Computational Intelligence, Biomedical Engineering and Biotechnology, Civil Engineering, Control, Informatics and Robotics, Electronics, Telecommunication and Optoelectronics, Mechanical and Aeronautical Engineering, Thermodynamics, Material Science and Nanotechnology, Power Systems and Power Electronics.

Journal Metrics: JCR Impact Factor 2018: 1.361, 5 Year Impact Factor: 1.323, SCImago Journal Rank (SJR) 2017: 0.319, Source Normalized Impact per Paper (SNIP) 2017: 1.005, CiteScore 2017: 1.27, The Polish Ministry of Science and Higher Education 2017: 25 points.

Abbreviations/Acronym: Journal citation: Bull. Pol. Ac.: Tech., ISO: Bull. Pol. Acad. Sci.-Tech. Sci., JCR Abbrev: B POL ACAD SCI-TECH Acronym in the Editorial System: BPASTS.

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Nicholas Stern

A story of growth

Nicholas Stern

ACADEMIA. The magazine of the Polish Academy of Sciences | 2019 | Nr 1 (6) Climate Change - Special Edition | 16-21

Keywords zero-carbon economy global warming

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The transition to a zero-carbon economy is the inclusive growth story of the twenty-first century. It needs to be managed with effective and cohesive policies, whilst recognizing that sustainable development, inclusive growth and climate action are interwoven and mutually supportive.

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Nicholas Stern

Impact of Kishnica mines on pollution of the Graçanka River and water wells near Kosovo

Sadija Kadriu Milaim Sadiku Mensur Kelmendi Mehush Aliu Ismet Mulliqi Arbër Hyseni

Journal of Water and Land Development | 2021 | No 48 | 16-21 | DOI: 10.24425/jwld.2021.136142

Keywords mines pollution the Graçanka River water quality water wells

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Abstract

Mining is an important economic activity in Kosovo. Artana and Kishnica mines are a part of the Trepça industrial complex and the increased exploitation of deposits has resulted in undesirable impact on the environment around the min-ing sites. More specifically, the mining activity caused water pollution. The aim of the study was to assess the physico- -chemical parameters and presence of heavy metals (Ni, Zn, As, Cd, Pb, Cr, Mn, Fe) in water samples of the Graçanka Riv-er and household wells in the area. The Inductively Coupled Plasma-Mass Spectrometer (ICP-MS) was used to determine metal concentrations. Samples were collected from five sites along the Graçanka River and from four private water wells during a period from September to November 2019. Concentrations of heavy metals in the Graçanka River were as follows Mn (24–1203 μg∙dm–3), Fe (11–785 μg∙dm–3), Ni (4–299 μg∙dm–3), Pb (2–22 μg∙dm–3), As (1–5 μg∙dm–3), Zn (344–1646 μg∙dm–3), Cr (1–2 μg∙dm–3) and Cd (<1 μg∙dm–3). The well waters were polluted by multiple metals (Mn > Fe > Ni > Pb) with concentrations of Mn 1834–36089 μg∙dm–3, Fe 158–3535 μg∙dm–3, Ni 82–1882 μg∙dm–3, Pb 5–45 μg∙dm–3, As 2–19 μg∙dm–3, Cd 1–12 μg∙dm–3, Zn 979–23474 μg∙dm–3 and Cr 1–2 μg∙dm–3. The pollution has been caused by industrial (min-ing-related) and urban discharges. The contamination originates from the release of flotation process waste and from the leaching of the tailings dam. Most probably, rainwater has washed contaminants into the aquifers and the Graçanka River. River water is not suitable for irrigation and well water is not suitable for consumption or irrigation. Wastewater should be treated before discharge and the tailings area should be remediated in order to stop the pollution.

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Bibliography

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Authors and Affiliations

Sadija Kadriu

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Milaim Sadiku

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Mensur Kelmendi

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ORCID:

Mehush Aliu

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Ismet Mulliqi

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Arbër Hyseni

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University of Mitrovica “Isa Boletini”, Faculty of Food Technology, Mitrovica, Kosovo

Assessment of Foundry Chromite Sand Crushability under Thermal-Mechanical Loading

J.K. Kabasele K.D. Nyembwe H. Polzin

Archives of Foundry Engineering | 2023 | vol. 23 | No 3 | 16-21 | DOI: 10.24425/afe.2023.144310

Keywords Innovative foundry technologies and materials Environment protection Crushability Chromite sand Moulding aggregates

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Abstract

When used for sand casting, foundry sand is stressed in several ways. These stresses, thermal and mechanical, compromise the grain integrity, resulting in size reduction and the production of small particles to the point where the sand is no longer viable for sand casting. This study evaluates the crushability of chromite sand, a crucial characteristic for determining how resistant sand is to size reduction by crushing. To replicate the heat and mechanical strain that sand is subjected to during the industrial sand-casting process, a sinter furnace and rod mill were employed. After nine minutes of heat and mechanical stress application, the crushing ratio, which was used to gauge the crushability of chromite sand, ranged from 1.72 to 1.92 for all samples. There were differences in the rate at which fine particles were produced among the samples, with sample E producing the highest proportion of fine particles in the same length of time. Understanding the properties that control the crushability performance of chromite sand will enable foundries to buy chromite sand with higher recycling yield, reducing the environmental impact of waste foundry sand and eliminating the risk to the workforce's pulmonary health in line with the current industry standards. Foundries will also be able to optimize the current industrial process while continually pushing for innovative foundry technologies and materials.

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Bibliography

[1] Campbell, J. (2015). Complete Casting Handbook. UK: Second ed.. Butterworth-Heinemann.
[2] Güngen, A.C., Aydemir, Y., Çoban, H., Düzenli, H. & Tasdemir, C. (2016). Lung cancer in Patients Diagnosed with Silicosis Should be Investigated. Respiratory Medicine Case Reports. 18(1), 93-95. DOI: 10.1016/j.rmcr.2016.04.011.
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[7] Das, S.K.. & Das, A. (2022). A critical state based viscoplastic model for crushable granular materials. Soils and Foundations. 62(1), 1-16. https://doi.org/10.1016/j.sandf.2021.101093.
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[9] Kabasele, J.K. & Nyembwe, K.D. (2021). Assessment of local chromite sand as ‘green’ refractory raw materials for sand casting applications. South African Journal of Industrial Engineering. 32(2), 65-74. http://dx.doi.org/10.7166/32-3-2615.

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Authors and Affiliations

J.K. Kabasele

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K.D. Nyembwe

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H. Polzin

Department of Metallurgy, University of Johannesburg, 55 Beit Street, Doornfontein, Johannesburg, South Africa
Peak Deutschland GmbH, Dresdner Straße 58, 01683 Nossen, Germany

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Wzrost korzystny dla wszystkich

Abstract

Authors and Affiliations

A story of growth

Abstract

Authors and Affiliations

Impact of Kishnica mines on pollution of the Graçanka River and water wells near Kosovo

Abstract

Bibliography

Authors and Affiliations

Assessment of Foundry Chromite Sand Crushability under Thermal-Mechanical Loading

Abstract

Bibliography

Authors and Affiliations