The plastic recycling process is an essential component of global efforts to protect the environment and conserve natural resources. Plastic, one of the most widely used materials in consumer goods production, has become a significant environmental issue due to its durability and the large volume of waste it generates.

What is plastic

Plastic is a synthetic or semi-synthetic material made from various organic polymers that can be molded into different shapes and products using heat and pressure. Polymers are chemical substances composed of large molecules formed from many repeating units called monomers. Plastic is known for its versatility, durability, and low production cost, which has made it ubiquitous in modern society.

The history of plastic

Compared to other materials, plastic has a relatively recent history. The first synthetic plastic, called “Bakelite,” was invented in 1907 by Belgian chemist Leo Baekeland, paving the way for a wide range of other plastics. During and after World War II, plastic production grew exponentially due to the need for inexpensive, versatile materials for military and civilian use.

How plastic is made

Producing plastic, which is widely used across various applications, involves several key stages, from raw material extraction to polymer formation. Here’s how the process unfolds:

1. Raw Material Extraction
   Plastic is mainly derived from crude oil, natural gas, and, in some cases, coal. These raw materials contain a complex mix of thousands of chemical compounds, which require further processing to extract the substances needed for plastic production.
2. Refining
   Crude oil is refined to produce various petrochemical products, including “monomers,” which are essential molecules for forming polymers. The refining process begins with heating crude oil in a furnace, followed by sending it to a distillation unit. Here, heavy crude oil is separated into lighter components called fractions. One of these fractions, naphtha, is crucial for plastic production. Natural gas can also be used to obtain monomers.
3. Polymerization
   At this stage, light olefin gases (such as ethylene, propylene, and butylene) are transformed into polymers by chemically bonding monomers into long hydrocarbon chains with high molecular weight. Polymerization can be carried out through various methods, such as chain polymerization and gas-phase polymerization using specific catalysts, to produce the desired types of plastic.

Producing plastic involves a complex, well-structured process, beginning with raw material extraction and refining, and ending with polymerization, where monomers are converted into polymers, forming the final material known as plastic. These stages are essential for ensuring a versatile, durable material suitable for multiple industrial and commercial uses.

The importance of plastic recycling

Plastic recycling is vital for several reasons. Firstly, it helps reduce the volume of waste that ends up in landfills and oceans. Plastic is a durable material that can take hundreds of years to decompose, leading to waste accumulation and environmental pollution. Secondly, recycling conserves natural resources, such as oil and natural gas, which are used in plastic production. Thirdly, plastic recycling helps reduce greenhouse gas emissions because recycling consumes less energy than producing new plastic.

Plastic recycling processes

Recycling plastic involves several stages, each essential for transforming plastic waste into reusable products. The process begins with the collection and sorting of plastic waste. This waste is gathered from households, businesses, and industrial facilities and transported to recycling centers, where it is sorted by plastic type.

There are seven main types of plastic, each with different properties and uses:

• PET (Polyethylene Terephthalate): Mainly used for beverage bottles and food packaging. It is transparent and provides a good moisture barrier.
• HDPE (High-Density Polyethylene): Used for milk containers, toys, and pipes. It is robust and impact-resistant.
• PVC (Polyvinyl Chloride): Used in pipes, windows, and some food packaging. It can be rigid or flexible, depending on the plasticizers.
• LDPE (Low-Density Polyethylene): Used for plastic bags, food wrap, and some bottles. It is flexible and moisture-resistant.
• PP (Polypropylene): Used for bottle caps, plastic straws, and some auto parts. It is heat- and chemical-resistant.
• PS (Polystyrene): Used for disposable cutlery, packaging, and insulation. It is rigid and can be foamed to create a lightweight material.
• Biodegradable Plastics and Bioplastics: Developed to reduce environmental impact, these are made from renewable sources and are designed to decompose more quickly in the environment.

After sorting, the plastic is cleaned to remove contaminants such as food residue or labels. The next step is shredding the plastic into small flakes, which are then melted and reformed into plastic granules. These granules can be used to manufacture new plastic products.

Plastic recycling

Plastic recycling is essential for reducing pollution and conserving natural resources. In the recycling process, certain types of plastic packaging are accepted and processed, while others are not suitable for recycling.

Types of plastic packaging that can be recycled

• PET (Polyethylene Terephthalate): This includes water and soft drink bottles, which are frequently collected and recycled due to their material’s value and reusability.
• Plastic wrap: Wrap used for packaging cases of water or other bulk products can be recycled if it is clean and properly separated.
• Yogurt or sour cream buckets: These dairy product containers are recyclable and are often collected separately for this purpose.
• Crates and carriers: Sturdy plastic containers used for transporting and storing beverages and other products are recyclable and usually returnable within a deposit system.
• Transparent food containers: Clear plastic containers commonly used for food packaging can be recycled if they are free from food residue.
• Food bags: Plastic bags used for food packaging, such as those for bread or vegetables, are recyclable but must be clean.
• Milk bottles: Plastic milk bottles, usually made from HDPE (High-Density Polyethylene), are recyclable and are accepted in most recycling programs.
• Liquid detergent and fabric softener bottles: These containers are typically recyclable but should be rinsed to remove any product residue.
• Shampoo and conditioner bottles: Bottles for personal hygiene products are recyclable if rinsed to remove any residue.

Types of plastic packaging that cannot be recycled

• Colored containers (black or matte trays): Colored plastic, especially black, is challenging to recycle due to identification and separation issues in the recycling process.
• Plastic containers that held chemicals: Containers used for hazardous chemical products are not recyclable due to the risk of contamination.
• Thin transparent food wrap: This type of wrap is often too thin and can get tangled in recycling equipment, making it difficult to process.
• Plastic bags: Although some programs accept plastic bags for recycling, many do not due to processing difficulties and contamination risks.
• Tetra Pak packaging: These packages, which resemble paper but contain layers of plastic and aluminum, are difficult to recycle due to the complexity of separating the materials.

Challenges in plastic recycling

Although plastic recycling offers numerous benefits, significant challenges are associated with this process. One of the main challenges is the diversity of plastic types, each with different chemical and physical characteristics that require specific recycling processes. Additionally, contamination of plastic waste with other materials, such as food waste, can make recycling more difficult and costly.

Another major obstacle is the lack of adequate infrastructure for collecting and processing plastic waste in many parts of the world.

Benefits of plastic recycling

Despite these challenges, plastic recycling brings significant benefits. The most obvious benefit is reducing the amount of plastic waste in landfills and the natural environment. This helps reduce pollution and protects wildlife, which can be negatively affected by the presence of plastic in their habitat.

Another important benefit is conserving natural resources. Recycling plastic reduces the need to extract and process new raw materials, such as oil and natural gas. This not only conserves natural resources but also reduces the environmental impact associated with their extraction and processing.

Plastic recycling also has economic advantages. Creating new products from recycled plastic can generate jobs and stimulate local economies. Additionally, companies can save money by using recycled materials, which may be cheaper than new materials.

Plastic consumption in Romania

Plastic consumption in Romania has become a major concern due to its environmental impact and low recycling rate. In 2023, Romania ranked among the last countries in the European Union regarding recycling plastic packaging waste, with a plastic waste recycling rate of approximately 30%, according to the Green Forum.

Key data and statistics

1. Recycling Rate: In Romania, only 30% of the plastic used is recycled, which is significantly below the European average. In 2020, the recycling rate for packaging waste was 39.87%, a decrease from 2019, according to Green Forum.
2. Comparison with Other Countries: By comparison, Belgium has a packaging recycling rate of 79.2%, the Netherlands 74.7%, and Luxembourg 71.9%. These figures highlight the substantial gap between Romania and other European countries, as noted in the same report.
3. Projects and Investments: According to Romania’s National Recovery and Resilience Plan (PNRR), Romania will invest 1.2 billion euros in waste management by 2026. These funds will be used to build collection and recycling centers, as well as to improve waste management infrastructure, reports The Diplomat.

The Deposit-Return System (SGR)

A Deposit-Return System (SGR) is an effective environmental protection mechanism that supports the separate collection of beverage containers for recycling. This system requires the collaboration of various stakeholders in the producer-consumer-recycler chain and is structured to encourage the return of used packaging through a financial deposit.

Funcționarea SGR

La achiziționarea unei băuturi, consumatorul plătește, pe lângă prețul produsului, o garanție suplimentară. Această garanție poate fi recuperată atunci când consumatorul returnează ambalajul gol. Prin acest mecanism, ambalajele post-consum devin valoroase, reducând astfel cantitatea de deșeuri care ajunge la gropile de gunoi și încurajând reciclarea.

Implementation of the Deposit-Return System in Romania

Legislative framework

On October 6, 2021, Decision 1074/2021 was published in the Official Gazette, no. 955, regulating the introduction of the Deposit-Return System (SGR) for non-reusable primary packaging. This decision establishes the legal foundation for the SGR’s operation in Romania.

System administration

As of November 30, 2023, from the program’s launch, SGR in Romania will be managed by S.C. RetuRo Sistem Garanție Returnare S.A., a Romanian legal entity established specifically for this purpose. This organization is responsible for implementing, operating, and financing the system, with shareholders including producer associations (holding at least a 30% market share) and the Romanian state (represented by the central environmental protection authority with a 20% share).

New changes for plastic recycling

Following the implementation of the SGR, new changes for plastic recycling are introduced in Romania:

• Attachment of bottle caps: Within four months, plastic beverage bottles must have attached caps.
• Sustainable materials for food containers: Containers for immediate food consumption, such as coffee cups and food boxes, are recommended to be made from sustainable materials, as advised by Green Environment Support.

Company obligations and expectations for Romanians

According to Ordinance No. 6/2021 on reducing the environmental impact of certain plastic products, businesses must implement the following measures:

• Attachment of bottle caps: Starting July 3, 2024, single-use plastic or composite beverage containers with a capacity of up to 3 liters must have caps attached if they are plastic. This measure applies to plastic bottles of all types, including water, carbonated drinks, juices, and alcoholic beverages.
• Recycled plastic content: From 2025, PET beverage bottles with capacities up to 3 liters must contain at least 25% recycled plastic.
• Sustainable materials for packaging: Businesses placing plastic drink cups, including their lids, or containers for immediate food consumption (both on-site and take-away) on the market must transition to sustainable materials. This is part of the annual requirement to reduce plastic usage. For 2024, the reduction target is 10% compared to 2022 quantities, rising to 20% by 2026, based on the same reference year.

Obligations and taxes for plastic

All of the above information must be included in a declaration to the Environmental Fund Administration, which affected companies are required to submit each February for the previous year. Some companies have already implemented the bottle cap attachment requirement, so products with the new cap attachment system may appear on store shelves before July 3.

Additionally, companies are actively seeking alternatives to single-use plastic packaging due to increasing obligations and taxes.

Individual role in plastic recycling

Everyone can contribute to plastic recycling efforts by adopting simple, effective practices. An essential first step is reducing the consumption of single-use plastics, such as plastic bags, straws, and disposable cutlery. Instead of single-use items, individuals can opt for reusable alternatives, like cloth bags, reusable water bottles, and metal utensils.

Proper collection and sorting of plastic waste are also crucial for successful recycling. Individuals should ensure that plastic waste is cleaned and correctly sorted before placing it in recycling bins. Raising awareness and educating the community about the importance of recycling and correct recycling practices can significantly increase recycling rates.

Communities play an important role in promoting plastic recycling by implementing local programs and initiatives. For example, they can organize plastic waste collection campaigns, reusable product exchanges, and educational events to boost community awareness and participation. Local authorities can also partner with companies and non-profit organizations to develop recycling infrastructure and facilitate access to recycling services.

Global impact of the plastic recycling process

Plastic recycling has a significant global impact, helping to reduce marine pollution and greenhouse gas emissions. In the world’s oceans, plastic waste poses a severe threat to marine life, with millions of tons of plastic entering the waters each year. By recycling plastic and reducing the amount of waste generated, ocean pollution can be reduced, and marine biodiversity can be protected.

Globally, plastic recycling also contributes to lowering greenhouse gas emissions. Producing new plastic involves fossil fuels and releases carbon dioxide into the atmosphere. Recycling plastic reduces the need for new plastic production, leading to substantial energy savings and decreased carbon emissions.

Plastic recycling is an essential part of global efforts to protect the environment and conserve natural resources. Despite the numerous challenges associated with the recycling process, the benefits it offers—both for the environment and the economy—are significant. Through responsible consumption practices, community education, and support for technological innovations, we can help create a more efficient and sustainable plastic recycling system. Each individual and community has an important role in this collective effort, and through concerted actions, we can reduce the negative impact of plastic on our planet.