Concentrated Sulfuric Acid as a Catalyst for Chemical Recycling of Polycarbonate in Water

被引:1
作者
Abedsoltan, Hossein [1 ]
机构
[1] Univ Toledo, Dept Chem Engn, Toledo, OH 43607 USA
关键词
Recycling; Polyesters; Catalysis; Catalysts; Hydrolysis; Reaction kinetics; Waste management; LIFE-CYCLE ASSESSMENT; BISPHENOL-A; ALIPHATIC POLYCARBONATES; THERMAL-DEGRADATION; PHYSICAL-PROPERTIES; PLASTIC WASTE; HYDROLYSIS; KINETICS; DEPOLYMERIZATION; PYROLYSIS;
D O I
10.1007/s12649-023-02326-x
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
This work presents the chemical recycling of poly (bisphenol-a carbonate) (PC) pellets with a hydrolysis technique by using concentrated sulfuric acid (H2SO4) as the catalyst in water. The effects of H2SO4 concentration and reaction temperature on the rate of hydrolysis were explored. For that, the values of PC conversion as a function of reaction time were gathered by running PC hydrolysis experiments at H2SO4 concentrations within the range of 10M to 16M and reaction temperatures within the range of 110 to 150 degrees C. The kinetics of PC hydrolysis were described by considering a pseudo-first-order reaction model, which was consequently applied to calculate specific reaction rate constants. Afterward, the Arrhenius equation was used to determine the overall activation energy of PC hydrolysis. Distillation was used to recover the catalyst (H2SO4) after a PC hydrolysis test so that it is further characterized by titration and reused for PC hydrolysis to study the catalyst reusability. It was shown that H2SO4 can be recovered and reused up to 5 rounds by retaining its acid activity. Also, the effect of hydrolysis on the reduction of PC size was explored. Moreover, a hydrolysis mechanism of polycarbonate by aqueous H2SO4 solution was presented.
引用
收藏
页码:2793 / 2806
页数:14
相关论文
共 100 条
[11]   Recycling of European plastic is a pathway for plastic debris in the ocean [J].
Bishop, George ;
Styles, David ;
Lens, Piet N. L. .
ENVIRONMENT INTERNATIONAL, 2020, 142
[12]   Growing environmental footprint of plastics driven by coal combustion [J].
Cabernard, Livia ;
Pfister, Stephan ;
Oberschelp, Christopher ;
Hellweg, Stefanie .
NATURE SUSTAINABILITY, 2022, 5 (02) :139-+
[13]   Physico-chemical properties of excavated plastic from landfill mining and current recycling routes [J].
Canopoli, L. ;
Fidalgo, B. ;
Coulon, F. ;
Wagland, S. T. .
WASTE MANAGEMENT, 2018, 76 :55-67
[14]   Recent Progress in the Chemical Upcycling of Plastic Wastes [J].
Chen, Xi ;
Wang, Yudi ;
Zhang, Lei .
CHEMSUSCHEM, 2021, 14 (19) :4137-4151
[15]   Chemical recycling to monomer for an ideal, circular polymer economy [J].
Coates, Geoffrey W. ;
Getzler, Yutan D. Y. L. .
NATURE REVIEWS MATERIALS, 2020, 5 (07) :501-516
[16]   Plastic debris straps on threatened blue shark Prionace glauca [J].
Colmenero, Ana I. ;
Barria, Claudio ;
Broglio, Elisabetta ;
Garcia-Barcelona, Salvador .
MARINE POLLUTION BULLETIN, 2017, 115 (1-2) :436-438
[17]   How much innovation is needed to protect the ocean from plastic contamination? [J].
Cordier, Mateo ;
Uehara, Takuro .
SCIENCE OF THE TOTAL ENVIRONMENT, 2019, 670 :789-799
[18]   Plasma gasification versus incineration of plastic waste: Energy, economic and environmental analysis [J].
Cudjoe, Dan ;
Wang, Hong .
FUEL PROCESSING TECHNOLOGY, 2022, 237
[19]   Developments in the life cycle assessment of chemical recycling of plastic waste e A review [J].
Davidson, Matthew G. ;
Furlong, Rebecca A. ;
McManus, Marcelle C. .
JOURNAL OF CLEANER PRODUCTION, 2021, 293
[20]   Low pressure plasma modified polycarbonate: A transparent, low reflective and scratch resistant material for automotive applications [J].
De Vietro, Nicoletta ;
Belforte, Luca ;
Lambertini, Vito Guido ;
Fracassi, Francesco .
APPLIED SURFACE SCIENCE, 2014, 307 :698-703