Alkaline hydrolysis of photovoltaic backsheet containing PET and PVDF for the recycling of PVDF
Alkaline hydrolysis of photovoltaic backsheet containing PET and PVDF for the recycling of PVDF
复制标题
含PET和PVDF的光伏背板的碱解用于PVDF的回收
DOI:
10.1007/s10163-023-01609-8
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发表时间:
2023
影响因子:
3.1
通讯作者:
Toshiaki Yoshioka
中科院分区:
文献类型:
--
作者:
Yoshinori Morita;Yuko Saito;Shogo Kumagai;Tomohito Kameda;Toshikazu Shiratori;Toshiaki Yoshioka
Recovering fluorine from end-of-life products is crucial for the sustainable production and consumption of fluorine-containing compounds because fluorspar, an important natural resource for fluorine, is currently at a supply risk. In this study, we investigated the feasibility of chemically recycling a fluorine-containing photovoltaic (PV) backsheet for fluoropolymer recycling. Herein, a PV backsheet consisting of laminated polyethylene terephthalate (PET) and polyvinylidene fluoride (PVDF) was treated with different concentrations of sodium hydroxide (NaOH) to hydrolyze the PET layer to water-soluble sodium terephthalate (Na2TP) and to separate pure PVDF layer as a solid material. Optimized alkaline conditions (up to 10 M NaOH at 100 °C for 2 h) were determined, under which 87% of the PET layer could be decomposed without any significant deterioration of the PVDF layer. The hydrolysis kinetics of PET layer in NaOH could be explained by the modified shrinking-core model. Considering that the mass of end-of-life PV panels in Japan is estimated to increase to approximately 280,000 tons per year by 2036, PV backsheets are attractive candidates for fluoropolymer recycling, which can be effectively achieved using chemical recycling approach demonstrated in this study.
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DOI:
10.3985/mcwmr.29.152
发表时间:
2018
期刊:
--
影响因子:
--
作者:
Yuko Saito;S. Kumagai;T. Kameda;T. Yoshioka
通讯作者:
T. Yoshioka
影响因子:
6.9
作者:
Geretschlaeger, Klaus J.;Wallner, Gernot M.;Fischer, Joerg
通讯作者:
Fischer, Joerg
DOI:
10.33736/jaspe.163.2015
发表时间:
1970
期刊:
--
影响因子:
--
作者:
M. F. Rabuni
通讯作者:
M. F. Rabuni
影响因子:
8.8
作者:
T. Kameda;Yuuzou Fukuda;Kye;G. Grause;T. Yoshioka
通讯作者:
T. Yoshioka
影响因子:
5.9
作者:
T. Kameda;Katsuaki Imai;G. Grause;T. Mizoguchi;T. Yoshioka
通讯作者:
T. Yoshioka