Saipem and ChemPET, the solution for chemical recycling based on Garbo's glycolysis technology

 

Through depolymerisation processes,  ChemPET converts polyethylene terephthalate plastic waste, commonly known as PET, into new, high-quality and high-value virgin-like PET. This process is safe, efficient and suitable  for hard-to-recycle plastics, such as coloured opaque and multi-layered materials as well as polyester textiles, delivering a significant reduction in greenhouse gas emissions and a positive environmental impact. 

 

A sustainable and real solution for PET recycling

PET is a thermoplastic polymer widely used in the production packaging to enhance food preservation and reduce food waste,as well as in other sectors such as textiles. However, only 21% of the PET placed on the global market is currently recycled, while the rest is dispersed in the environment or disposed of in landfills or through energy recovery.

ChemPET technology, represents a concrete response to the growing demand for sustainable plastic recycling  solutions, especially in light of increasingly stringent regulations.

 

An innovative technology

Compared to its competitors, ChemPET  offers simpler processing with a reduced carbon footprint, more efficient by-product management and the capability to handle a wide range of PET-based waste without using harmful substances.

 

Particularly suited for textile feedstock

ChemPET can also valorise PET-based textile waste, that cannot be mechanically recycled and is currently incinerated, landfilled, or dispersed in the environment. PET is converted back into its original building block, the monomer BHET, which is then purified and reprocessed into new high-quality virgin-like PET.

Since around 80% of PET produced worldwide is not recycled, ChemPET represents a crucial solution for reclaiming value from this largely untapped waste stream.

ChemPET infographic

pdf - 01-2025

Safe and simple process

 

  • Mild operating conditions
  • No runaway reactions
  • Limited extent of hazardous classified areas
  • Low gas and liquid hydrocarbons inventories
  • No harmful emissions, no hazardous solvents

High efficiency for
maximised yield

  • Packaging and textile feedstock enabled
  • High BHET quality, for virgin-like PET production
  • Minimised losses of BHET and MEG
  • Complements mechanical recycling boosting circular economy
  • Maximum material recovery

Industrialised product

  • Optimised engineering and execution schedule
  • Supply chain ready
  • Available for third-party licensing

Robust technology

  • Continuous pilot plant operations
  • Extensive test campaigns
  • Several tons of BHET produced
  • Available for clients' feedstock testing

Together with its partner Garbo, Saipem creates a new synergy in the circular economy sector

In 2023, Saipem entered into an alliance with Garbo, which since 2017 has invested in R&D to develop and refine a technology for PET chemical recycling with broad industrial applications.

Garbo is a company specialised in material recovery and regeneration through chemical-physical processes, with 30 years of experience and customers across Europe and the Far East. Founded in 1997, the company quickly became a pioneer in the recovery of silicon carbide and polyethylene glycol. Today, it combines its original activity in micro-abrasive mixture recovery with processing and commercialization in the chemical sector, focusing on liquid and solid polymers as well as technical abrasives. Since its inception, Garbo has filed and industrially applied more than 15 proprietary patents, including ChemPET.

The synergy between the two companies has resulted in the development of an industrialized solution for the chemical recycling of PET based plastic waste, implemented for the first time at the Cerano plant in Novara, Italy..