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Keywords symbiosis fungi trees
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Abstract

Trees and fungi interact in complex ways. Sometimes, the two groups of organisms would even find it hard to survive without each other.
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Authors and Affiliations

Joanna Mucha
1

  1. Institute of Dendrology PAS in Kórnik
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Abstract

The aim of our research is to gain understanding about material flow related information sharing in the circular economy value network in the form of industrial symbiosis. We need this understanding for facilitating new industrial symbiosis relationships and to support the optimization of operations. Circular economy has been promoted by politics and regulation by EU. In Finland, new circular economy strategy raises the facilitation of industrial symbiosis and data utilization as the key actions to improve sustainability and green growth. Companies stated that the practical problem is to get information on material availability. Digitalization is expected to boost material flows in circular economy by data, but what are the real challenges with circular material flows and what is the willingness of companies to develop co-operation? This paper seeks understanding on how Industry 4.0 is expected to improve the efficiency of waste or by-product flows and what are the expectations of companies. The research question is: How Industry 4.0 technologies and solutions can fix the gaps and discontinuities in the Industrial Symbiosis information flow? This research is conducted as a qualitative case study research with three cases, three types of material and eight companies. Interview data were collected in Finland between January and March 2021. Companies we interviewed mentioned use-cases for sensors and analytics to optimize the material flow but stated the investment cost compared to the value of information. To achieve sustainable circular material flows, the development needs to be done in the bigger picture, for the chain or network of actors, and the motivation and the added value must be found for each of them.
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Authors and Affiliations

Anne-Mari Järvenpää
Vesa Salminen
Jussi Kantola
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Abstract

The cement industry has been using waste as a raw material for many years. Waste is also used as alternative fuel. Cement plants are an important element of the waste management system and fit the idea of a circular economy. When waste is recovered in the cement production process, direct and indirect CO 2 emissions are partially avoided. This article discusses the cement industry in Poland. The current situation in terms of the use of alternative fuels and raw materials in Poland, the different types of waste and the amount of waste used is discussed. The article discusses changes in the amount of waste (the increase in the amount of waste used as raw materials from the year 2006 to the year 2019) and the types of waste recovered in the cement production process and the possibility of closing material cycles on the plant scale (recycling to the primary process – cement kiln dust) and industry (using waste from other industries: metallurgy – granulated blast furnace slag, iron bearings; energy production – fly ash, reagypsum/phosphogypsum, fluidized bed combustion fly ash, and fluidized bed combustion bottom ash; wastewater treatment plants – sewage sludge, etc.). The analysis shows that the role of cement plants in waste management and the circular economy in Poland is important. Industrial waste from metallurgy, power plants, heat and power plants, wastewater treatment plants, and municipal waste is used as the raw material for the cement industry, leading to an industrial symbiosis.
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Authors and Affiliations

Alicja Uliasz-Bocheńczyk
1
ORCID: ORCID
Eugeniusz Mokrzycki
2
ORCID: ORCID

  1. AGH University of Science and Technology, Faculty of Civil Engineering and Resource Management, Kraków, Poland
  2. Mineral and Energy Economy Research Institute, Polish Academy of Sciences, Kraków, Poland
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Abstract

Excessive use of chemical fertilizers, in agriculture, has negative impacts on water, soil and affects the environment and health. In recent decades, researchers have been interested in the natural benefits of natural microorganisms and how they could be a good alternative to the use of chemical fertilizers. The aim of this study was to investigate the effect of soil inoculation with strains of mycorrhizae and beneficial bacteria on soil properties and productivity of table grapes. Field trials were conducted on a commercial table grape production farm ( Vitis vinifiera cv. Mousca), located in northeastern Morocco. Twelve-yearold plants were used. Control plants were not inoculated (T1). The prototype plants were inoculated with 1.2 × 104 of Glomus iranicum var. tenuihypharum/100 g (T2), a mixture of 1/2 concentration of Glomus iranicum var. tenuihypharum and 1/2 concentration of Pseudomonas putida (T3) and 1 × 108 CFU ∙ g–1 of Pseudomonas putida (T4). The inoculations were realized twice; the first inoculation was completed on July 19, 2019 while the second inoculation on February 21, 2020. Soil analyses were carried out, both physicochemical (pH, electrical conductivity (EC), salinity, % of dry matter) and microbiological properties (total flora, fungi and actinobacteria). Plant growth (length of the plant, number and diameter of sticks, number of clusters per tree, number of nodes per stick, distance between nodes and bud burst), yield and fruit quality (number of berries per cluster, cluster weight, cluster length and width, pH, Brix degrees, acidity, EC and % dry matter) were measured. Results showed slight trends regarding the effects of treatments on the physicochemical and microbiological properties of the soil, plant growth and fruit quality. The number of clusters was significantly higher in Glomus (T2) Pseudomonas (T4) and Glomus than in control treatments.
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Authors and Affiliations

Salah Ed-dine Samri
1
ORCID: ORCID
Kamal Aberkani
1
ORCID: ORCID
Mourad Said
1
Khadija Haboubi
2
ORCID: ORCID
Hassan Ghazal
3
ORCID: ORCID

  1. Biology and Geology, Plolydisciplinary Faculty of Nador, University Mohammed Fisrt, Selonane, Morocco
  2. Environment, National School of Applied Sciences, University Abdelmalek Essaadi, Al Hoceima, Morocco
  3. Bioinformatics, National Center for Scientific and Technical Research, Rabat, Morocco
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Abstract

Coral reefs, commonly found in tropical coastal areas, are the world’s most complex marine ecosystems. But how do deeperwater corals differ from easier-to-study reefs in shallower waters?
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Authors and Affiliations

Mikołaj K. Zapalski
1

  1. Faculty of Geology, University of Warsaw
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Abstract

One of the biggest problems for sand casting foundries must be the waste produced from disposable molds. Stricter environmental regulations make it harder to dispose of waste sand, so a truly competitive foundry does no longer only make great products, but also concentrates on a sustainable casting process. While methods for repurposing waste foundry sand are still limited, the internal circulation of such sands proves significant possibilities. This paper will focus on thermal reclamation of foundry sands in a special rotating drum furnace in a central facility to serve several foundries. Thermal reclamation is a process for handling foundry sands in elevated temperatures to combust unwanted substances from reusable base sand. The introduction focuses on background of the Finnish foundry business, the most common sand systems in Finland and their reclaim properties. The experimental part features presentation of the new reclamation plant process and the conducted test runs. The samples collected from each test run have been laboratory tested to assure proper sand quality. The results of this work showed that the reclamation of alkaline phenolic no-bake sands was excellent. Reclamation of green sands did not provide satisfactory results as expected and the reclamation of furan no-bake sands provided mixed results, as the raw material was imperfect to begin with. The most important result of this work is still the successful initiation of a centralized thermal reclamation plant, with the ability to reclaim sands of several foundries. With this all of industrial symbiosis, circular economy and sustainability advanced in Finland, and the future development of this plant provides even further opportunities and a possibility to spread the ideas on a global scale.

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Authors and Affiliations

T. Sappinen
J. Orkas
T. Kronqvist

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