Value-added conversion of waste cooking oil and post-consumer PET bottles into biodiesel and polyurethane foams

Oligoester and Polyester Production via Acido-alcoholysis of PET Waste

“…[7][8][9] In some cases, the glycolysis products were further used without any purification steps [41][42][43]. Our own experience (unpublished results) and other studies on glycolysis show molecular mass distribution usually with well distinguishable peaks.…”

Titanate Nanotubes Modified With Zinc and Its Application in Post‐Consumer PET Depolymerization

“…Among the many ways to chemically recycle polyethylene terephthalate (PET), currently one of the most important polymers, glycolysis is the most advantageous . This polymer has a high global production and consumption due to its many applications (packaging, fiber, films) and, in consequence, the inadequate disposal of post‐consumer PET waste becomes an environmental and economic concern. Glycolysis method consists in the insertion of excess glycols, most commonly ethylene glycol (EG) to the PET chain for the production of the monomer bis(2‐hydroxyethyl) terephthalate (BHET) that can be reinserted in the PET production process.…”

Sound Absorption Properties of Polyurethane Foams Derived From Waste Cooking Oil Incorporated With Waste Wood Fiber Filler

“…The attention on natural biomass feedstock is also on the conversion process into monomer, polymers, and composites. Several works have also been investigated with respect to the production of polyols for the PU industry which included the acid liquefaction of identified biomass residues [6,1,11].…”

“…A byproduct of the biodiesel production has received much consideration [6,12,16] which importantly have been led to produce both chemical and biological processes to convert waste oils into value-added products. However, the effective substitution of petrochemicals by WCOs and/or biomass polyols in the PU production can possibly reduce their cost and ecological effect.…”