|
AUTHOR(S): Ruki̇ye Özteki̇n, Deli̇a Teresa Sponza
|
TITLE |
 PDF |
ABSTRACT In this study, H2(g) production from a real plastic wastes containing polylactic acid (PLA) using Cu7S4/CdS nanocomposites (NCs) was performed with photocatalytic degradation process. The effects of increasing pH values (3.0, 4.0, 5.0, 7.0, 9.0 and 11.0), photodegradation times (30, 60, 120, 180, 240 and 300 min), PLA concentrations (5, 10, 15 and 20 mg/l) and increasing using Cu7S4/CdS NCs concentrations (5, 10, 25, 50 and 100 mg/l) on H2(g) production from a real plastic wastes containing PLA was investigated using Cu7S4/CdS NCs during photocatalytic degradation process. XRD, FESEM, EDX, TEM and XPS analyses were performed for characterization of Cu7S4/CdS NCs. PLA measurements were performed using an inductively coupled plasma mass spectrometry (ICP-MS). H2(g) measurements were made in gas chromatography–mass spectrometry (GC-MS). Maximum 99.69% H2(g) production efficiency was obtained after 240 min photocatalytic degradation time from 10 mg/l PLA in real plastic wastes, at pH=7.0, at 300 W UV-vis light and at 25oC, using 50 mg/l Cu7S4/CdS NC dose, respectively. The operating data were defined with an Artificial Neural Network (ANN) model based on H2 production. The experimental results were compared with the ANN model data and it was found that the model and laboratory data agree which other. The design of the photoreactor and the operational conditions for treat the PLA can be defined by ANN model. The reusability of Cu7S4/CdS NCs was applied during 40 cycles. The PLA photocatalytic capacity remained stable for 30 cycles as 99%, while the PLA uptake and photodegradation yields of PLA decreased slightly to 98% after 35 cycles. As a result, 98% regeneration was achieved for 50 mg/l Cu7S4/CdS NCs during 10 mg/l PLA degradation. The photocatalytic degradation process is a very effective, easy to apply, is economical and environmentally friendly for the removals of PLA from plastic and microplastic wastes from in environmental areas. |
KEYWORDS Anilite/cadmium sulfide (Cu7S4/CdS) nanocomposite; Hydrogen gas [H2(g)] production; Microplastics (MPs); Photocatalytic degradation process; Photoreforming; Polylactic acid [PLA, (C3H4O2)n] |
|
Cite this paper Ruki̇ye Özteki̇n, Deli̇a Teresa Sponza. (2026) Photocatalytic H2(g) Production from Polylactic Acid Containing Real Plastic Wastes Using Cu7S4/CdS Nanocomposites. International Journal of Biochemistry Research, 10, 1-44 |
|
