Chemical recycler Ioniqa files for bankruptcy protection

LONDON (ICIS)–Glycolysis-based chemical recycling technology company Ioniqa has filed for bankruptcy protection, the company announced in press release on Thursday.

The company is headquartered in the Netherlands. It is concentrated on chemically recycling polyethylene terephthalate (R-PET).

In the press release, the company stated that it has determined that “achieving a positive cash flow from its advanced polyester recycling technology will take too long.” Advanced recycling is a term that is often used as an alternative description for chemical recycling (although mechanical recyclers also use the term advanced recycling to refer to some mechanical recycling processes).

It attributed this to the comparatively low price of traditional virgin PET and the supply chain for chemically recycled PET still being in development. It also attributed some of the blame to “the implementation of regulated mandatory standards for meaningful recycling levels… [being] too far out into the future.”  It stated that this meant that large-scale deployment of its technology was not economically feasible at this time.

Ioniqa has a glycolysis-based chemical recycling demonstration plant in Geleen, The Netherlands, which has been operational since 2019 and has an estimated output of 8,000 tonnes/year according the ICIS Recycling Supply Tracker – Chemical. Investors in the site include The Coca Cola Company, Unilever, Indorama Ventures, Koch Technology Solutions, and Infinity Recycling’s Circular Plastics Fund.

Chemical recycling is an umbrella term for a variety of methods that use different production routes and feedstocks to create new material from waste. This means that each process (and each technology and individual player) has vastly different cost-structures and the economics of each chemical recycling method vary substantially.  Coupled with this, achievable prices for chemically recycled products vary significantly between grade and polymer type.

Common chemical recycling methods include pyrolysis, gasification, glycolysis, hydrolysis, methanolysis, and enzymatic hydrolysis.

In chemical recycling, chemical processes are used to revert waste back to an earlier molecular state. Waste can be reverted back to monomer, building block chemicals, or all the way back to crude oil/energy. Chemical recycling alters the fundamental chemical properties of the material.

In glycolysis, a transesterification catalyst is used to break the ester linkages. Typical catalysts include monoethylene glycol (MEG), diethylene glycol (DEG), propylene glycol (PG) or dipropylene glycol (DPG)..In glycolysis, a transesterification catalyst is used to break the ester linkages, which are replaced by hydroxyl terminals. This produces bisterephthalate (BHET) and PET glycozates. These can be reacted with aliphatic diacids to make: polyester polyols, which are in turn used in polyurethane (PU) foams; co-polyesters; unsaturated resins; and hydrophobic dyes. If combined with virgin BHET, the process produces chemically recycled PET via dimethyl terephthalate (DMT) or purified terephthalic acid (PTA) glycolysis. Typical catalysts include monoethylene glycol (MEG), diethylene glycol (DEG), propylene glycol (PG) or dipropylene glycol (DPG).

Transesterification does not work on polymers such as polyolefins due to a lack of cutting points. As a result, glycolysis is predominantly focussed on PET, and this means that it typically uses sorted and separated monomaterial as a feedstock, which can add additional cost.

The most common form of chemical recycling in Europe is pyrolysis-based. This is in large part being driven by demand from ambitious brand sustainability targets in the packaging sector. Many fast-moving consumer goods (FMCG) brands see chemical recycling as the only viable way to reach large scale food-grade packaging suitable recycled polyolefins given current EFSA requirements that 95% of input waste must be former food-contact to gain food-contact approval. Most PET input waste is sourced from used plastic drinks bottles, making it easier for R-PET producers to meet this 95% requirement than other polymers, and there is a well established R-PET food-grade pellet sector – using traditional recycling methods – across Europe. R-PET is also the only mechanical recycling technology recognised as suitable for producing food-contact material under European Commission regulation (EU) 2022/1616 on ‘recycled plastic materials and articles intended to come into contact with foods’.

Pyrolysis-based chemical recycling uses heat and pressure – typically in the absence of oxygen, although it is sometimes present in controlled volumes – to transform waste feedstocks (most commonly plastic waste or end-of-life tyres) into an earlier molecular state.

Pyrolysis-based plants targeting mixed plastic waste as feedstock – with a focus on polyolefins – currently account for more than 60% of all operating chemical recycling capacity in Europe according to ICIS Recycling Supply Tracker – Chemical. PET, however, does not pyrolyse.

Highlighting just how variable achievable prices for chemically recycled materials can be, pyrolysis oil prices in Europe are currently regularly trading on the spot market anywhere from €800-2,200/tonne ex-works Europe depending on grade.

ICIS assesses more than 100 grades throughout the recycled plastic value chain globally – from waste bales through to pellets. This includes recycled polyethylene (R-PE), recycled PET (R-PET), R-PP, mixed plastic waste and pyrolysis oil. On 1 October ICIS launched a recycled polyolefins agglomerate price range as part of the Mixed Plastic Waste and Pyrolysis Oil (Europe) pricing service. For more information on ICIS’ recycled plastic products, please contact the ICIS recycling team at recycling@icis.com

Clarification: recasts glycolysis process technology paragraph