Circular Economy of Metals by Niina Grönqvist https://padlet.com/niina_gronqvist/anbvxqpoyos3 en-us 2017-11-28 11:36:33 UTC 2026-01-14 21:07:15 UTC hello@padlet.com Case studies: Introduce the Effective industrial symbiosis (Kalundborg) niina_gronqvist https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/210829783 2017-11-28 11:36:33 UTC https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/210829783 Case studies: Circular Economy applied to the automotive industry? niina_gronqvist https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/210829784 2017-11-28 11:36:33 UTC https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/210829784 Case studies: Recycling of mobile phones? niina_gronqvist https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/210829786 2017-11-28 11:36:33 UTC https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/210829786 Criticality of metals? niina_gronqvist https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/210829787 2017-11-28 11:36:33 UTC https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/210829787 Environmental impacts of metals? niina_gronqvist https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/210829788 2017-11-28 11:36:33 UTC https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/210829788 Impacts of Metals Use? niina_gronqvist https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/210829790 2017-11-28 11:36:33 UTC https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/210829790 Circular Economy - what does it mean? niina_gronqvist https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/210829793 2017-11-28 11:36:33 UTC https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/210829793 Introduction niina_gronqvist https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/210829795  Metals are present everywhere around us and are one of the major materials upon which our economies are built. Economic development is deeply coupled with the use of metals. During the 20th century, the variety of metal applications in society grew rapidly. In addition to mass applications such as steel in buildings and aluminium in planes, more and more different metals are in use for innovative technologies such as the use of the specialty metal indium in LCD screens. A lot of metals will be needed in the future. It will not be easy to provide them. In particular in emerging economies, but also in industrialized countries, the demand for metals is increasing rapidly. Mining and production activities expand, and with that also the environmental consequences of metal production. ]]> 2017-11-28 11:36:33 UTC https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/210829795 Circular economy https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211336980 *Distinguish between biological and technical cycle
*Technical cycle= resources are recovered and restored
 = products, components, materials are circulated -> without a loss of value]]> 2017-11-29 11:33:00 UTC https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211336980 Circular Economy https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211337429 A regenerative system that closes (or slows down) material and energy loops, and ensures that there is a reduction of emissions, waste and energy leakage. Instead of products being disposed at the end-of-life, they are instead put back into the material cycle where they are recycled, repaired or reused.

]]> 2017-11-29 11:34:42 UTC https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211337429 Circular economy https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211337876 -continuous, positive development cycle 
-preserves and enhances natural capital and optimizes resource yields]]> 2017-11-29 11:36:20 UTC https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211337876 Circular economy https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211338126 Save natural resources and increase self efficiency of companies enterprisess]]> 2017-11-29 11:37:22 UTC https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211338126 Environmental impact of metals https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211339991 *Effects on environment due to production (emissions to air, water, soil,...)
*Energy consumption quite high (e.g. Electrolysis, furnaces,..) -> produce this energy can have environmental impact too (coal plants, nuclear reactors,...)
*certain (heavy) metals released to environment -> pollution! E.g. Arsenic, mercury, lead, cadmium,...




]]> 2017-11-29 11:43:50 UTC https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211339991 Environmental impacts of metal use https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211341066 Emissions of unwanted soils, liquids gases
Indirect consumption of raw materials and utilities 
Ores from mining require energy -> use of water, reagents, fuels 
Tocixity concerns raised like cadmium mercury lead or even some metals become toxic at high level like Zn, Cu.]]> 2017-11-29 11:47:37 UTC https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211341066 Environmental impacts of metals https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211341073 * Direct emissions from extracting and processing
* Indirect emissions from utilities such as electricity and the manufacture of reagents used in metal processing]]> 2017-11-29 11:47:39 UTC https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211341073 Circular Economy https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211341336 Helps maintain the value of materials and resources in the economy for as long as possible and minimizes the waste generated thus preserving the environment. This also creates jobs for many.]]> 2017-11-29 11:48:38 UTC https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211341336 Effective industrial symbiosis https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211342360 *public and private companies are selling and buying waste from each other
*Kalundborg symbiosis = worldwide first functioning example for this
*exchange/trade by-products, water, heat, energy
*industry also connected to agriculture: e.g. Pig farm consumes yeast -> no need to import that much soy anymore
*project planned to be more economical -> advantage: also more environmental friendly!
*system also applied in Kokkola's industrial park


]]> 2017-11-29 11:53:00 UTC https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211342360 Recycling of mobile phones https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211342868 - plastics used in making phones can be recycled. 
- precious metals such as gold and silver can be recovered during recycling; for every 1000kg of mobile phones, it is estimated that 300-350kg of gold can be recovered (this is a much better yield than from gold ore where 1ton of ore only yields 5g of gold)
- lithium and cobalt can be recovered from mobile phone batteries]]> 2017-11-29 11:54:58 UTC https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211342868 Impacts of metal used https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211343156 2017-11-29 11:55:57 UTC https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211343156 environmental impact https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211343808 Emission of pollutants like sulphur dioxide and nitrogen dioxide which is fatal to the atmosphere. On the other hand, in the metal mining industries, many Impurities are emitted out such as arsenic and cadmium which can directly and indirectly effect the environment. For instance, Ontario, Canada has one of the biggest iron mining industry. Approximately, 23.7% of the pollutant on that city is emitted by those industry]]> 2017-11-29 11:58:11 UTC https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211343808 Case studies: Circular Economy applied to the automotive industry? https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211344194 - The parts destined for remanufacturing, called ’scraps’, which can be used in 90% of cars in our range, are dropped-off to vehicles in-use /owned.
- By using reverse logist of distribution of spare parts, the scraps are collected by the commercial network.

The savings from the production of a remanufactured part compared to a new part are as follows:

80% less energy
88% less water
92% less chemical products
70% less waster production

]]> 2017-11-29 11:59:41 UTC https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211344194 https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211344214 Environmental Impact: ]]> 2017-11-29 11:59:44 UTC https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211344214 Recycling/circular economy of cars https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211347173 *often laws -> mandatory to give cars to appropriate disposers/ recycling companies
*cars get drained, hazardous parts e.g. mercury switchs get removed
*reusable parts e.g. Tires, windows,... get removed
*rest gets shredded, different metals separated

But cars are the consumed goods that are mostly recycled!]]> 2017-11-29 12:11:24 UTC https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211347173 Criticality of metal https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211347242 Some are supplement for building, smartphones and transportation. Some are used for decoration, for health, for weath.
It’s everywhere in our daily lives from Cu, Sn, Al, ]]> 2017-11-29 12:11:40 UTC https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211347242 criticality https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211348280 Criticality is the quality, state, or degree of being of the highest importance and is of particular interest in case of metal and other resources.]]> 2017-11-29 12:15:27 UTC https://padlet.com/niina_gronqvist/anbvxqpoyos3/wish/211348280