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Circle Economy and ICLEI have partnered up to initiate the go to knowledge hub of case studies about the circular economy in cities. The Cities Collection is a repository of case studies that demonstrate the role of cities in the circular transition, and includes policies, business cases and research articles. Cases in the Collection flow into an ecosystem of digital products which support users in transitioning cities to circularity, for example [Ganbatte](https://ganbatte.world/cities/) and <a href="https://circulars.iclei.org/" target="_blank">ICLEI Circulars</a>, both part of the <a href="https://circulars.iclei.org/circle-lab-for-cities/" target = _blank">Circle Lab for Cities Programme.</a>

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Circular Cities

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Article / Report

Impact on the availability of resources as well as their effect on living organisms, ecosystems, and components of the environment.

Ecological Impact

Impacts on the social fabric of the community and well-being of the individuals and families.

Social Impact

Impacts on the financial condition of a company, as well as the the economicconditions of its stakeholders and on economic systems at local, national, andglobal levels.

Economic Impact

Impact on increased knowledge and understanding as a result of the case study

Increase Awareness

Impact on the quantity or quality of jobs, and shifts in the labour market

Jobs

Impact on the health and happiness of human populations

Well-being

Contribution to social parity, or impact on social disparity

Equality

Reduced green house gas emissions released into the biosphere

Reduce Emissions (SDG13)

Minimise waste through diversion: Instead of sending waste to landfill, it is redirected into other industrial processes for handling, treatment, recycling, recovery, or reuse in various forms. 

Minimise waste through design: At the outset of a process of project, plan and design such that there is zero waste or minimal waste during production, use, and at end of life. 

Minimise Waste (SDG12)

Producing and providing business and consumer goods and services

Goods and Services

Societal Services

Providing public and private education and support services at any level or for any profession, and governmental and public administration services, including judicial, regulatory, and legislative activities, taxation, defence, public order and safety, immigration services, foreign affairs and the administration of government programmes

Education and Government Services

Providing water and sewage services, including water collection and distribution, water treatment systems and sewage treatment facilities

Water and Sewage

Collecting waste from households and businesses by means of refuse bins, wheeled bins, containers, etc., and providing treatment, incineration, materials recovery and reclamation, and disposal of hazardous and non-hazardous waste

Waste Management

Utilise waste streams as a source of secondary resources and recover waste for reuse and recycling

Use waste as a resource

Account for the systems perspective during the design process, to use the right materials, to design for appropriate lifetime and to design for extended future use

Design for the future

Work together throughout the supply chain, internally within organisations and with the public sector and communities to increase transparency and create joint value

Team up to create joint value

Designing to enable multiple uses and lifecycles of a product and its materials

Design for cyclability

Engage with the government on circular policies and programmes

Government collaboration

Participating in government programmes that support and advance the circular economy

Government programmes

'Inform' increases the overall levels of awareness and builds the necessary skills and knowledge around the circular economy to foster long-term change.

Inform

'Manage' influences the use and function of physical and material elements within the urban environment. 

Manage

Infrastructure

Develop infrastructure to support sustainable lifestyles

'Mobilise' sets the direction of and builds momentum towards long-term change, while also determining how this direction is determined and governed.

Mobilise

Visions and Ambitions

Govern the Transition

 Convene Towards Action

Advocate for circular change

Eliminate waste by maximizing the recovery of resources at the end of the use phase so that they can be reintroduced into production processes


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Recover

Incorporate extended use in project planning phases; create or update city policies to allow for extended use.


Design and regulate for separation and recovery

Ensure that household and business waste is collected and appropriately sorted (by type, label, etc.) to allow for maximum recovery of value.


Collect and sort waste to facilitate recovery

Process waste into valuable industrial inputs or consumer products; distribute processed waste to users.

Process waste and ensure its re-entry into industry at its highest value

Manufactured goods, such as vehicles, textiles, appliances and equipment and their associated production processes are big employers but:
- production processes often rely on fossil fuels and currently drive one-third of the overshoot on the climate change planetary boundary due to its GHG production, 
- material- and energy-intensive industrial activities are linked to deforestation and drive 15% on both the land use and freshwater planetary boundaries, 
- manufacturing goods results in substantial amounts of hazardous industrial waste and leaks chemicals into the environment.

Here, circular solutions must tackle the full value chain, but material demand must also shrink: this will necessitate a societal shift to favouring sufficiency over excess and reducing consumption to sustainable levels. Our four key solutions for manufactured goods are:
- Mainstream industrial symbiosis and efficiency : Achieve process improvements, scrap diversion and reduction in yield losses through greater industrial symbiosis and efficiency. Foster tighter collaboration within and between industries to deliver powerful material and emissions savings.
- Extend the lifetime of machinery, equipment, and goods: Maximise the lifetime of goods that serve our daily needs to bring a number of environmental benefits. 
- Buy what's needed: Reduce the number of purchases of common electronic goods, appliances, and other equipment to sufficiency levels. 
- Eschew fast fashion in favour of sustainable textiles: Drastically reduce new clothing purchases. All used clothing should go on to be repaired, reused or, if needed, recycled appropriately. Prioritise natural and local textile manufacturing, as well as higher-quality and more durable garments. 




👕📱 Consumer Goods

Businesses

Communities

Governments

Slow strategies aim to keep materials in use for as long as possible, for example through design for durability and repairability. A more circular economy is also a slower one: materials, components, and products—and even buildings and infrastructure—that we lock in stocks are made to last. This will lower material demand in the long run, in essence also serving to narrow resource flows.

Slow

Cycle strategies aim to cycle and reuse materials at their highest value: they maximise the volume of secondary materials re-entering the economy, ultimately minimising the need for virgin material inputs and therefore also narrowing flows. Of course, virgin materials will always be needed to a degree: all materials degrade and can’t be cycled infinitely, use energy, and require blending with virgin materials to maintain strength and functionality.

Cycle

Ensure renewable, reusable, non-toxic resources are utilised as materials and energy in an efficient way

Prioritise regenerative resources

While resources are in-use, maintain, repair and upgrade them to maximise their lifetime and give them a second life through take back strategies when applicable

Stretch the lifetime

Consider opportunities to create greater value and align incentives that build on the interaction between products and services

Rethink the business model

Use digital, online platforms and technologies that provide insights to track and optimise resource use, strengthen connections between supply chain actors, and enable the implementation of circular models



Incorporate digital technology

Utilise bio-based, reusable, non-toxic and non-critical materials

Regenerative materials

Replace freshwater with less impactful alternatives and enact water efficiency measures

Regenerative water

Replace energy sources with less impactful alternatives and enact energy efficiency measures

Regenerative energy

Upgrade, repair, and maintenance while in-use

Maximise lifetime of products in-use

Give products and parts another life after their end-of-use

Maximise lifetime of products after use

Ensure that biological products are properly managed and preserved

Maximise lifetime of biological products

Reuse, repurpose, and recycle waste streams within the same industry

Valorise waste streams - closed loop

Reuse, repurpose, and recycle waste streams within other industries

Valorise waste streams - open loop

Recover waste energy or generate fuels and energy from waste streams

Energy recovery from waste

Deliver products through business models that ensure maximum value

Product business models

Deliver services through business models that ensure maximum value

Service business models

Designing to reduce waste during production and use

Design out waste

Designing products that are made to last and to ensure longer use

Design for durability

Industry peers to industry peer collaboration to create joint value and identify synergies

Industry collaboration

Engage and guide customers and consumers to ensure circular use of products

Customer / consumer collaboration

Engage internally to guide employees and facilitate greater knowledge sharing between internal divisions

Internal collaboration

Engage with the local community where facilities or offices are located

Community collaboration

Employ technologies to gather and analyse data to provide insights on resource use

Data and insights

Employ online platforms to connect and improve information sharing between stakeholders

Digital platforms

Using bio-based materials such as bioplastics, mushroom-based materials, etc.

Alternative bio-based materials and inputs

Enacting measures that optimise material use such as 3D printing, etc.

Material efficiency

Using <a href="http://ec.europa.eu/growth/sectors/raw-materials/specific-interest/critical_sv" target="_blank">materials that are not considered critical</a>.

Non-critical materials and inputs 

Using <a href="https://echa.europa.eu/information-on-chemicals" target="_blank">materials that are not toxic or hazardous</a>.

Non-toxic materials and inputs

Using materials that can be easily reused or recycled after use

Reusable, recyclable materials and inputs

Replacing freshwater use with rainwater, fogwater, seawater, etc.

Alternative water use

Enacting measures that optimise water use

Water efficiency

Converting fossil fuel based operations to electric

Electrification

Enacting measures that optimise energy use

Energy efficiency

Using renewable energy like solar, wind, etc. or renewable fuels like biomass, etc.

Renewable energy, fuels

Providing repair services or maintenance services for products or parts

Product maintenance, repair

Providing upgrade programmes or upgrade services for products or parts of products

Product upgrade

Providing DIY repair kits or spare part programmes for enabling self-repair

Self-repair, spare part service

Extraction and reuse of parts from end-of-life products for use in new products

Part recovery

Activities to clean, decorate, and restore products back to working condition for original or new purposes

Refurbishment, remanufacturing, renovation

Marketplaces or services that enable the second hand sale of own-brand products

Own brand second-hand sale

Marketplaces or services that enable the second hand sale of products

Second-hand sale, distribution

Preserving and conserving biological products such as food, forests, etc.

Preservation, conservation

Managing and enriching biological products such as soil, land, etc.

Management, enrichment

Collection programmes that process products and parts for reuse or recycling within the same industry

Closed loop collection

Transforming waste products, materials for reuse within the same industry

Closed loop upcycling

Using waste materials that have been processed and recycled to produce new products within the same industry

Using closed loop recycled materials

Transforming waste products into materials and lower value products within the same industry

Closed loop downcycling

Collection programmes that process products and parts for reuse or recycling within other industries

Open loop collection

Transforming waste products into materials and lower value products within other industries

Open loop downcycling

Transforming waste products, materials for reuse within other industries

Open loop upcycling

Using waste materials that have been processed and recycled to produce new products within other industries

Using open loop recycled materials

Generating energy from waste through processes such as anaerobic digestion, gasification, incineration, etc.

Generating energy from waste

Processing waste streams into fuels such as biogas, biofuels, pellets, etc.

Processing waste into fuel

Recovering and reusing waste heat, gas, etc. for energy

Recovery and reuse of waste energy

Selling parts of modular products that can be refilled

Sale of refillable parts

Providing products through leasing, rental, or pay-per-use models instead of sales

Leasing, rental, pay per use

Providing products through sharing between consumers, customers, etc.

Peer to peer sharing

Key elements of the circular economy

The GGGI aims&nbsp;to support Senegal’s efforts to achieve integrated and environmentally sustainable waste management and the acceleration of green secondary city development. The project will bring a lasting impact on the lives of populations in Dakar, Thies and&nbsp;Diourbel&nbsp;through a range of interventions to improve efficiency in the whole cycle of waste management. The project will focus on three dimensions:&nbsp; i) plastic wasteii) waste from electrical and electronic equipment (WEEE)iii) domestic wastewater. The project will contribute to strengthening national and sub-national/local (city-level) green growth policy planning, financing and institutional frameworks (GGGI,2021).