Joshua Dill
The legislative landscape in the U.S. is highly fragmented, largely due to the wide range of legislative enactments passed across the different states. Three major categories of recycling laws affect chemical recycling: chemical recycling acceptance laws, post-consumer (PCR) content laws, and extended producer responsibility (EPR) laws. Each of these legislative frameworks will influence the development of the chemical recycling industry in their unique way, highlighting the complexity of navigating this evolving regulatory environment.
Chemical recycling is an umbrella term that encompasses a variety of different processes designed to break down plastic at a molecular level. These processes reverse-engineer plastics, breaking them down into their original building blocks, which can then be reused to create new materials.
There are two primary categories of chemical recycling: thermal depolymerization and chemical depolymerization. While both methods target plastics at a molecular level, their approaches differ fundamentally. Thermal depolymerization relies on high heat to break down plastics, whereas chemical depolymerization employs specialized agents to achieve the same outcome.
Each category includes specific processes:
- Thermal Depolymerization (TD): Includes pyrolysis (breaking down plastics into oil and gas through high heat and low oxygen) and gasification (converting plastics into syngas through higher temperatures and oxygen or steam). These processes typically favor polyolefins (PO) as feedstock鈥攎ainly polyethylene (PE) and polypropylene (PP).
- Chemical Depolymerization (CD): Includes glycolysis, methanolysis, and hydrolysis, which involve chemical reactions with agents like glycol, methanol, or water to depolymerize plastics. These processes typically favor PET as feedstock.
Chemical Recycling Acceptance Laws聽
The acceptance of chemical recycling in state legislation typically involves defining chemical recycling as a manufacturing process, rather than categorizing it as waste management. This means that chemical recycling plants in the state will not have to adhere to the same strict environmental guidelines as waste management facilities, incentivizing the construction of more facilities. It also potentially opens the door for chemical recyclers to access government resources (e.g., grants, tax benefits) allocated for manufacturing in those states.
Which States Have Accepted It?
As of late 2024, exactly half of the US states have recognized chemical recycling as a manufacturing process.
This gradual legislative acceptance reflects growing awareness of the potential for chemical recycling to address plastic waste challenges.
What are the Effects of State-by-State Acceptance?
The acceptance of chemical recycling on a state-by-state basis, rather than at a federal level, is a double-edged sword. On one hand, when a state legitimizes chemical recycling, it strengthens industry sentiment, while on the other, it further fragments the chemical recycling industry.
The incorporation of chemical recycling into legislation began in Florida in 2017, paving the way for other states to follow. The first significant wave of legislative approvals occurred in 2019, leading to a surge in chemical recycling facility start-ups the following year. This pattern repeated with another wave of legislative acceptances in 2021 and 2022, followed by a spike in facility start-ups in 2023. The chart below provides a detailed visualization of this trend.
This trend signals that the acceptance of chemical recycling has positive effects on the industry, serving to drive growth and incite innovation.
The acceptance of chemical recycling also presents the challenge of varying perspectives across states. Firstly, there is a divide between the states that have accepted chemical recycling as a manufacturing process and those that have not. Secondly, among the states that have accepted chemical recycling, there are a few of states that explicitly exclude certain processes. For example, states such as Kentucky and Kansas are among those that exclude processes that turn plastic to fuel. One example of this can be seen in the State of Kentucky鈥檚 HB 45, which state, 鈥�”Advanced recycling” does not include energy recovery or the conversion of post-use polymers into fuel.鈥� Similar language can be found in the State of Kansas鈥� SB 114, 鈥�”Advanced recycling” does not include incineration of plastics or waste-to-energy processes, and products sold as fuel are not recycled products.鈥櫬�
In effect, wording such as this essentially excludes thermal depolymerization process as being considered a type of recycling, while recognizing chemical depolymerization process, creating a further divide even among those states that have chosen to accept chemical recycling. The lack of uniformity in how chemical recycling is addressed adds confusion to the legislative landscape.
Post-Consumer Recycling Content Laws聽
In addition to chemical recycling-specific legislation, other laws, such as PCR content mandates, indirectly influence the industry. PCR laws require that a minimum percentage of recycled material be included in certain types of packaging sold within a state.
How Many States and What are the Effects on Chemical Recycling?
Currently, five states鈥擟alifornia, Maine, Connecticut, Washington, and New Jersey鈥攈ave enacted PCR laws. However, none of these states are among the 25 mentioned above that have formally accepted chemical recycling into legislation. This fact means that it is often unclear if outputs from chemical recycling are ineligible to count toward PCR requirements, undermining the industry’s potential impact and growth.
A notable exception exists in Washington, where its PCR law explicitly states: 鈥淏oth mechanical and chemical recycling methods are acceptable.鈥� This language demonstrates a more inclusive approach, contrasting with states like California and Maine, which remain cautious about embracing chemical recycling.
The contrasting viewpoints held by states that have PCR content mandates is another example of lack of uniformity in chemical recycling related legislation.
Extended Producer Responsibility
EPR is another regulatory framework gaining traction in the US. EPR shifts the responsibility for managing a product’s entire lifecycle from consumers to producers, with a particular focus on end-of-life management. Under EPR laws, producers that meet a certain requirement鈥攗sually large producers that put considerable amount of plastic onto the market鈥攁re obligated to join a producer responsibility organization (PRO) to help finance the collection, recycling, or disposal of their products.
How Many States and What are the Effects on Chemical Recycling?
EPR policies are currently implemented on a state-by-state basis, with Oregon leading the way by releasing a detailed plan. However, the relationship between EPR and chemical recycling remains complex. A key issue lies in how EPR laws define acceptable “end markets” for collected plastics. Oregon鈥檚 definition of responsible end markets appears tailored to traditional mechanical recycling, inadvertently excluding many chemical recycling technologies. This exclusion stems from the varied outputs of chemical recycling, which can range from plastics to fuels or chemical precursors, complicating their classification as traditional recycling.
Without clearer language recognizing the potential of chemical recycling as an end market, EPR laws add another layer of ambiguity to chemical recycling.
Conclusion
The regulatory landscape surrounding chemical recycling remains highly fragmented, with varying degrees of acceptance and restrictions across states. While the recognition of chemical recycling in state legislation correlates with industry growth, inconsistencies in how it is defined and regulated create challenges for accelerated growth. Further complicating the landscape, PCR content mandates and EPR laws introduce additional uncertainties, as their definitions often exclude or fail to clarify the role of chemical recycling. This uncertainty can manifest as a lack of investment, both from chemical recyclers who will be hesitant to commit capital to new plants, and from investors wary of funding projects without clear long-term policy support. As the industry continues to develop, greater legislative uniformity and clearer regulatory frameworks will be necessary to unlock the full potential of chemical recycling as a viable solution to plastic waste management.