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Use of high-density paste bacfill for safe disposal of copper/zinc mine tailings. = Użycie zagęszczonej podsadzki zestalanej do bezpiecznego składowania odpadów górnictwa miedzi i cynku

Erol Yilmaz Tikou Belem Mostafa Benzaazoua Ayhan Kesimal Bayram Ercikdi Ferdi Cihangir
Gospodarka Surowcami Mineralnymi - Mineral Resources Management | 2011 | No 3 | 81-94
Keywords Tailings backfills characterization environmental stabilization disposal
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Abstract

The safe environmental disposal of sulphide-rich copper/zine mine tailings is fast becoming a major economic factor in determining the profitability of mining operations. There have been new approaches and better technologies practised in the recent years which allow the mining industries to reduce and/or eliminate the environmental impacts of harmful mine tailings. One of these approaches is the use of high-density paste backfill (HDPB) which is consisting mainly of a mix of solid particles (with the cement) and water, containing between 70% and 85% by dry weight of solids. The increased use of HDPB has improved the reliability, and has reduced the cost of the preparation and transportation systems. This paper focuses on the potential environmental benefits of using the HDPB when tailings are acid generating, and also provides a case study conducted in an underground copper/zinc mine in northeast Turkey in order to illustrate these benefits.

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Authors and Affiliations

Erol Yilmaz
Tikou Belem
Mostafa Benzaazoua
Ayhan Kesimal
Bayram Ercikdi
Ferdi Cihangir

Analysis of major errors in the design of pumping stations and manure storage on pig farms

O. Boltianskyi B. Boltianskyi N. Boltyanska S. Sosnowski
Teka Commission of Motorization and Power Industry in Agriculture | 2016 | vol. 16 | No 2
Keywords pig manure manure disposal pumping stations manure storage
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Abstract

We consider the manure removal system, which is used in most pig farms being built and reconstructed at present in Ukraine, and it has been discovered that there are major mistakes during the baths construction in the correct geometry and depth, and therefore discusses their rules of operation. If the baths geometry is wrongly executed, for instance, if the slope is made to slant toward the bottom of the tub filler drain pipe, which in itself is unacceptable, or not properly executed in the form of a special pit steps towards the neck drain, and etc., then a number of problems is inherent of its exploitation. The basic requirements for laying fused-pipe is compliance with its slope. The considered equipment must be equipped with pumping stations to pump manure. The pumps for pumping manure: submersible sewage pumps and dry-installed in the mine and long sewage pumps with electric or PTO shaft of a tractor were analyzed. Attention was paid to the designing of modern equipment for the distribution of manure waste into fractions. The classification of manure storage and the basic requirements for their placement and arrangement was carried out, and recommendations are made for the designing of pumping stations, to select pumps for the pumping stations and the design during the modern construction and reconstruction of old pig farms.
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Authors and Affiliations

O. Boltianskyi
B. Boltianskyi
N. Boltyanska
S. Sosnowski

Application of a Hybrid Uf-Ro Process to Geothermal Water Desalination. Concentrate Disposal and Cost Analysis

Michał Bodzek Barbara Tomaszewska Leszek Pająk
Archives of Environmental Protection | 2014 | vol. 40 | No 3 | DOI: 10.2478/aep-2014-0033
Keywords desalination Geothermal water reverse osmosis Costs Analysis concentrate disposal
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Abstract

M embrane-based water desalination processes and hybrid technologies are often considered as a technologically and economically viable alternative for desalination of geothermal waters. This has been confirmed by the results of pilot studies concerning the UF-RO desalination of geothermal waters extracted from various geological structures in Poland. The assessment of the feasibility of implementing the water desalination process analysed on an industrial scale is largely dependent on the method and possibility of disposing or utilising the concentrate. The analyses conducted in this respect have demonstrated that it is possible to use the solution obtained as a balneological product owing to its elevated metasilicic acid, fluorides and iodides ions content. Due to environmental considerations, injecting the concentrate back into the formation is the preferable solution. The energy efficiency and economic analysis conducted demonstrated that the cost effectiveness of implementing the UF-RO process in a geothermal system on an industrial scale largely depends on the factors related to its operation, including without limitation the amount of geothermal water extracted, water salinity, the absorption parameters of the wells used to inject water back into the formation, the scale of problems related to the disposal of cooled water, local demand for drinking and household water, etc. The decrease in the pressure required to inject water into the formation as well as the reduction in the stream of the water injected are among the key cost-effectiveness factors. Ensuring favourable desalinated water sale terms (price/quantity) is also a very important consideration owing to the electrical power required to conduct the UF-RO process.
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Authors and Affiliations

Michał Bodzek
Barbara Tomaszewska
Leszek Pająk

Forecasting solar generation in energy systems to accelerate the implementation of sustainable economic development

Yevheniia Sribna Viktor Koval Piotr Olczak Dmytro Bizonych Dominika Matuszewska Oleksandr Shtyrov
Polityka Energetyczna - Energy Policy Journal | 2021 | vol. 24 | No 3 | 5-28
Keywords solar energy production and consumption of electricity “green” tariff disposal of solar panels
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Abstract

The analysis and assessment of the development of solar energy were carried out and it was noted that the production of solar electricity in the world has increased by more than 15% over the last year. In 2020 there are more than 37 countries with a total photovoltaic capacity of more than one GW, and the share of solar energy in total world electricity production was 8.15%. In the regional context, the largest production of electricity by solar energy sources is in Asia (at the expense of India and China) and North America (USA). The study assesses the main factors in the development of solar energy from the standpoint of environmental friendliness and stability of the electricity supply. The problem of the utilization of solar station equipment in the EU and the US is considered. According to the IPCC, IEA, Solar Power Europe, forecasting the development of solar energy in the world is considered. It is proved that the main factor in assessing the economic efficiency of solar energy production is a regional feature due to natural and climatic conditions (intensity of solar radiation). The use of solar generation is auxiliary for the operation of modern electrical networks as long as the efficiency of photovoltaic cells increases by at least 60–65%. Marginal costs of solar energy are minimal in those countries where active state support is provided. The competitiveness of solar energy is relatively low. However, from the standpoint of replacing energy fuel at a cost of USD 10 per 1 Gcal of solar energy saves 10–20 million tons of conventional fuel. Industrial production of solar electricity at modern solar power plants forms a price at the level of USD 250–450 for 1 MWh.
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Authors and Affiliations

Yevheniia Sribna
1
ORCID: ORCID
Viktor Koval
2
ORCID: ORCID
Piotr Olczak
3
ORCID: ORCID
Dmytro Bizonych
4
Dominika Matuszewska
5
ORCID: ORCID
Oleksandr Shtyrov
6
  1. National University of Water Management and Environmental Engineering, Rivne, Ukraine
  2. National Academy of Sciences of Ukraine, Kyiv, Ukraine
  3. Mineral and Energy Economy Research Institute of the Polish Academy of Sciences, Kraków, Poland
  4. Etalontechservice LLC, Kharkiv, Ukraine
  5. AGH University of Science and Technology, Kraków, Poland
  6. Petro Mohyla Black Sea National University, Mykolaiv

Sustainable sewage sludge management in Morocco: Constraints and solutions

Abdessamad Ghacha Lailal Ben Alla Mohammed Ammari
Journal of Water and Land Development | 2020 | No 46 | 71-83 | DOI: 10.24425/jwld.2020.134199
Keywords disposal recovery sewage sludge sustainable management wastewater wastewater treatment plant
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Abstract

The remarkable development of sanitation in Morocco has inevitably led to the production of sludge generated from wastewater treatment plants in increasing quantities. Consequently, the problem of sludge management becomes persistent and worrying.

The aim of this paper was to contribute to the study of sewage sludge management issue in Morocco by identifying the various constraints hampering the sustainable disposal and/or recovery of municipal sewage sludge and drawing up rec-ommendations for the decision-makers. Moreover, in the context of improving by learning from best practices and seeking common solutions regarding this problematic, benchmarking with other countries has been conducted as well.

To carry out this study, a methodological approach was defined based on bibliographic research, surveys, interviews and benchmarking.

The constraints hampering the sustainable management of sludge are numerous and complex, they have not been tech-nical and environmental but also a regulatory, institutional-organizational and economic-financial nature yet. Therefore, municipalities, government and academia ideally would be encouraged to participate in the decision-making process re-garding the management of sewage sludge. Technical solutions, when coupled with stakeholder participation, can lead to policy implementation with a higher chance of improving the present situation.

In the case of Morocco, when comparing with others sludge recovery and disposal routes, land application (reuse in ag-riculture, silviculture and rehabilitation of degraded soils) remains the most environmentally friendly option, as well as a sustainable and economically viable solution.

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Authors and Affiliations

Abdessamad Ghacha
Lailal Ben Alla
Mohammed Ammari

Nie-miejsca pamięci i grzebaliska w materiałach alertu Związku Harcerstwa Polskiego z 1965 roku

Katarzyna Grzybowska
Historyka Studia Metodologiczne | 2021 | tom 51 | 223-239 | DOI: 10.24425/hsm.2021.138372
Keywords non‑site of memory alert (call‑to‑action) body disposal pit grave scouts
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Abstract

The article presents the concept of a non‑site of memory ( non lieux de la mémoire) in relation to the materials created as the result of the First Alert of the Polish Scouting Association, the country‑wide scouting reconnaissance that took place in 1965. Following Roma Sendyka, the concept of a non‑site of memory should be understood as referring to sites directly related to genocide or mass murders that have not received the status of memorial sites. Although they have not been sanctioned by the powers (government, authorities, museums), the memory of them is present in local communities. Vernacular ways of describing non‑sites of memory are crucial for their understanding as a concept of historical and anthropological thinking. An important element of the description of non‑memorial sites is the way of conceptualising and naming body disposal pits that have not been turned into burial places. The article contains a description of the scouting action and an analysis of how in 1965, 20 years after the war, the scouts described and marked such places. Considerations on the topographically defined notion of a non‑place of remembrance are based on the research material of reports prepared by the teams that took part in the action.
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Bibliography

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Czapliński, Przemysław, Małgorzata Quinkenstein, Robert Traba. „Cmentarz”. W Modi memo-randi. Leksykon kultury pamięci, red. Magdalena Saryusz‑Wolska, Robert Traba, 79–84. Warszawa: Wydawnictwo Naukowe Scholar, 2014.
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Na szlakach walki. Harcerski alert zwycięstwa. Warszawa: Wydawnictwo Harcerskie, 1965.
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Źródła archiwalne dotyczące pierwszego alertu ZHP:

Archiwum Instytutu Pamięci Narodowej w Warszawie (AIPN), GK 195/VIII/1–22, Alert ZHP. Województwo lubelskie.
Archiwum Państwowe w Kielcach (APK), 21/1101/153, Komenda kieleckiej chorągwi im. S. Żeromskiego Związku Harcerstwa Polskiego w Kielcach. Alert kieleckiej chorągwi Z.H.P. – sprawozdania, instrukcje.
Archiwum Akt Nowych (AAN), 747. Ministerstwo Oświaty w Warszawie. Gabinet Ministra. ZHP – rozwój i zadania propagandowo‑wychowawcze w roku szk. 1965/66. Notatka służbowa dla ministra. 1966.
Archiwum Muzeum Harcerstwa (AMH), CI8.1. Akta centralne 1956–1989. I Alert „Harcerski wiosenny alert zwycięstwa”.
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Authors and Affiliations

Katarzyna Grzybowska
1
ORCID: ORCID
  1. Wydział Polonistyki Uniwersytetu Jagiellońskiego, Ośrodek Badań nad Kulturami Pamięci, Kraków

Possibilities for the industrial use of cooled geothermal brines by borehole salt mines in the Polish Lowlands

Marek Rasała
Gospodarka Surowcami Mineralnymi - Mineral Resources Management | 2018 | vol. 34 | No 1 | DOI: 10.24425/118642
Keywords geothermal plant disposal of geothermal brine borehole salt mine industrial brine economic viability
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Authors and Affiliations

Marek Rasała

The Influence of Drainage Wells Barrier on Reducing the Amount of Major Contaminants Migrating from a Very Large Mine Tailings Disposal Site

Robert Duda
Archives of Environmental Protection | 2014 | vol. 40 | No 4 | DOI: 10.2478/aep-2014-0041
Keywords mining waste tailings disposal site wells barrier vertical drainage contamination effectiveness Żelazny Most
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Abstract

The subject of the research is one of the largest World’s mine tailings disposal sites, i.e. Żelazny Most in the Legnica-Głogów Copper Mining District (south-western Poland), where flotation tailings are poured out after copper ore treatment. The protective hydraulic barrier made of 46 vertical drainage wells was characterized and evaluated in view of reduction of major contaminants (Cl, Na, SO4, Ca) migrating from the facility to its foreground. The efficiency of groundwater protection was determined on the basis of a new approach. In applied method the loads of characteristic and commonly recognizable compounds, i.e. salt (NaCl) and gypsum (CaSO4) were calculated, instead their chemical components. The temporal and spatial variability of captured main contaminants loads as well as its causes are discussed. The paper ends with the results of efficiency analyses of the barrier and with respect to the predicted increase in contaminant concentrations in the pulp poured out to the tailings site.
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Authors and Affiliations

Robert Duda

Interaction between Fly Ash and Bottom Ash Mixture as a Sealing Layer of Waste Disposal Sites and Geomembranes HDPE

Katarzyna Zabielska-Adamska
Archives of Environmental Protection | 2005 | vol. 31 | No 4 | 93-110
Keywords fly ash fly ash/bottom ash mixture waste disposal scaling layers HDPE geomembrane interface shear strength
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Abstract

Interface shear strength between geomembranes with various textures, which are used for carrying out the artificial sealing of waste disposal, and compacted fly ash/bottom ash mix, was determined in the paper. The tests were conducted in a classical direct shear apparatus, with the use of a modified cylindrical box. The box was equipped with an additional part, which enabled interaction testing between compacted waste and HOPE geomembrane, It was found that interface strength estimation docs not depend on sample compaction. Only geomcmbranc structure has an effect on shear strength between waste sample and geomembrane. In the case of geomembranes with diverse structure greater values of interface friction angle are obtained, and for smooth geomembranc - greater values of adhesion.
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Authors and Affiliations

Katarzyna Zabielska-Adamska

Propagation of non-adherent HL-60 cells in batch cultures maintained in staticand wave-type agitated systems

Kamil Wierzchowski Iwona Grabowska Maciej Pilarek
Chemical and Process Engineering | 2019 | vol. 40 | No 2 | 167-177 | DOI: 10.24425/cpe.2019.126109
Keywords disposable (single-use) bioreactor wave-type agitation non-adherent cell culture human HL-60 cells
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Abstract

Typically applied static (i.e. non-agitated) cultures do not provide sufficient conditions for efficient propagation of suspended non-adherent cells, in general. Feasibility of small-scale wave-type agitated single-use bioreactors for gentle agitation underlies applicability of such systems for scaling-up of fragile biomass of animal cells. The basic aim of the study was to compare the results of non-adherent HL-60 cell propagation performed referentially as the batch culture in typical static (i.e. non-agitated) disposable culture flasks (50 cm3 of culture medium) and in ReadyToProcess WAVETM25 bioreactor system (GE Healthcare) equipped with disposable culture bag (300 cm3 of culture medium) subjected to continuous wave-type agitation. The density and viability of HL-60 cells were significantly higher for the bioprocess subjected to wave-type agitation, than in the reference static culture. The values of the specific rate of glucose consumption per cell (rglc=cell) exhibited by HL-60 cells maintained in the system with continuous wave-type agitation was significantly lower (i.e. up to more than 42%) than the values noted for the static culture, for exactly the same time-points of two compared cultures. The results of the studies undoubtedly and comprehensively confirmed the applicability of the studied disposable bioreactor with wave-induced agitation as the right platform for proceeding the propagation of non- adherent HL-60 cells and for providing the culture conditions required by HL-60 cells for sustainable metabolism.

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Authors and Affiliations

Kamil Wierzchowski
Iwona Grabowska
Maciej Pilarek

Experimental investigation of using recycled glass waste as fine aggregate replacement in concrete

Salam Salman Chiad Alharishawi Nagham Rajaa Aqeel Raheem Jabur
Archives of Civil Engineering | 2021 | vol. 67 | No 4 | 27-38 | DOI: 10.24425/ace.2021.138484
Keywords crushed waste glass partial replacement of fine aggregate normal concrete disposal problem mechanical properties
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Abstract

Environmental problems are considered a serious situation in modern construction. Reusing and recycling glass wastes is the only method to decrease waste produced. There is growing environmental compression to decrease glass waste and to reprocess as much as possible. In this investigational work, the effect of partially substituting crushed waste glass in concrete is considered. The study investigates crushed waste glass used as a partial replacement of fine aggregate for new concrete. recycled glass waste was partially replaced as 5%, 10%, 15%, 20%, 25%, 30, 35, 40%, 45%, 45% and 50% and tested at 7, 14 and 28 days of curing at 20◦ for mechanical properties and compared with those of controlled mix. The compressive strength, splitting tensile strength and flexural forces and static elasticity modulus of specimens with 20% waste glass content was 30%, 19.41%, 9.13% and 10.12%, respectively, which is higher than the controlled mix at 28 days. The outcomes displayed that the maximum rise in strength of concrete occurred when 20% replacement with glass crush. It is found that crushed waste glass can be used as fine aggregate replacement material in concrete production.
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Bibliography

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Authors and Affiliations

Salam Salman Chiad Alharishawi
1
ORCID: ORCID
Nagham Rajaa
2
ORCID: ORCID
Aqeel Raheem Jabur
3
ORCID: ORCID
  1. Mustansiriyah University, College of Engineering, Environmental Engineering Department, Baghdad, Iraq
  2. Mustansiriyah University, College of Engineering, Highway and Transportation Engineering Department, Baghdad, Iraq
  3. Mustansiriyah University, College of Engineering, Civil Engineering Department, Baghdad, Iraq

The influence of biomaterial in the binder composition on the quality of reclaim from furan no-bake sands

Katarzyna Major-Gabryś Małgorzata Hosadyna-Kondracka Mateusz Skrzyński Iwona Stachurek
Archives of Civil Engineering | 2022 | vol. 68 | No 4 | 163-177 | DOI: 10.24425/ace.2022.143032
Keywords biodegradability biomaterial (PCL) mechanical regeneration organic moulding sand post-regeneration dust waste disposal
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Abstract

The aim of this paper is to determine the influence of biomaterial in the binder composition on the quality of reclaim from furan no-bake sands. The biomaterial is introduced into the moulding sand in order to accelerate the biodegradation of post-regeneration dust and thus to reduce the amount of harmful waste from foundries in landfills. This addition, however, can’t deteriorate the technological properties of the moulding sand, including its ability to mechanical regeneration. Chemically bonded moulding sands are characterized by high ability to mechanical regeneration, which reduces the consumption of the raw material and costs related to their transport and storage. A side effect of the regeneration process is the formation of a large amount of post-regeneration dusts. According to the tendencies observed in recent years, moulding processes must meet high requirements connected to environmental protection including problems related to the disposal of generated wastes. A partial replacement of synthetic binding materials with biomaterials may be one of scientific research directions on the production of innovative foundry moulding and core sands. The conducted regeneration tests presented in this paper initially proved that biomaterial slightly decreases the quality of reclaim from moulding sand with its addition. However, its ability to regeneration increases with time of the process. In previous research authors tested biodegradability of the dust remaining after the regeneration process. The tests proved that moulding sand with biomaterial added at the stage of the production process is characterized by about three times better biodegradability than the same moulding sand without additive.
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Authors and Affiliations

Katarzyna Major-Gabryś
1
ORCID: ORCID
Małgorzata Hosadyna-Kondracka
2
ORCID: ORCID
Mateusz Skrzyński
1
ORCID: ORCID
Iwona Stachurek
2
ORCID: ORCID
  1. AGH University of Science and Technology, Faculty of Foundry Engineering, Al. Mickiewicza 30, 30-059 Cracow, Poland
  2. Łukasiewicz Research Network – Krakow Institute of Technology, Zakopianska 73, 30-418 Cracow, Poland

A NOVEL CLEAN MINING TECHNOLOGY INVOLVING THE UNDERGROUND DISPOSAL OF WASTE ROCK IN COAL MINES

Zhang Wei Li Peng Dong-Sheng Zhang YANG ZHI
Archives of Mining Sciences | 2018 | vol. 63 | No 1 | DOI: 10.24425/118887
Keywords clean mining technology underground disposal of waste rock centralized sorting system gob-side entry driving with preset packwall no-pillar filling mining
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Authors and Affiliations

Zhang Wei
Li Peng
Dong-Sheng Zhang
YANG ZHI

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