Implementing a circular economy in chemical manufacturer involves a series of strategies to ensure efficient use of resources and minimize environmental impact. Here are some key steps for implementation:

1. Improve Energy Efficiency and Use Renewable Energy: Enhancing operational energy efficiency through heat integration and green power purchasing can significantly reduce the total emissions of the chemical industry.

2. Recycling: Deploying various technologies for recycling domestic and industrial waste, such as mechanical and chemical recycling of separated plastics and textile fibers, as well as gasification of other non-recyclable organic waste, can reduce the total emissions of the chemical industry by up to 5% by avoiding waste incineration and creating circularity for the carbon inherent in recycled materials.

3. Sustainable Feedstocks: Utilizing biomass and CO2 as raw materials, which can be transformed into useful chemicals through various means. For instance, ethylene, one of the most produced molecules in the chemical industry, can be produced from biomass or CO2 through various pathways.

4. Bioplastics: Bioplastics are a type of plastic that can be made from renewable resources. Their monomers can be extracted or synthesized from biomass compounds, such as sugars from plants, and then polymerized into direct replacements for existing plastics like polyethylene (PE), or new polymers like polyhydroxyalkanoates (PHAs).

5. Chemical Recycling: Chemical recycling is seen as a way to achieve a more circular plastic economy by producing raw materials for new plastics from recycled plastics and reducing the amount of waste sent to landfill, greenhouse gas emissions, and dependence on petroleum resources.

6. Process Integration: Integrating different tasks or processes to minimize resource use and emissions. For example, energy reduction and CO2 emission can be achieved by developing optimal heat and mass exchange networks, water protection networks, and waste minimization networks.

7. Green Chemistry Principles: Implementing green chemistry principles within a circular economy framework requires innovative strategies and integrated management to promote the combination of green chemistry practices with government, technological, and academic activities.

8. Waste Reduction Best Practices: Implementing a range of waste reduction strategies, such as source reduction, reuse of waste materials, recycling, composting, energy recovery, chemical treatment, and proper landfilling.

9. Circular Chemistry Conceptual Framework: Adopting a circular economy concept within the context of Industry 4.0, addressing sustainability issues of chemical processes/products through lifecycle and systems thinking approaches.

10. Energy Efficiency Opportunities: In chemical manufacturer, significant electricity usage can be reduced through the upgrade of energy-efficient technologies such as motors and drives, while improving safety, reliability, and profitability.

By employing these strategies, the chemical manufacturer industry can move towards a more sustainable and environmentally friendly direction while maximizing economic benefits.

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