Jayen Aris Kriswantoro, M.Si. and his colleagues conducted this work to study the effect of thermal alkaline pretreatment and zinc acetate-catalyzed methanolysis in biogas production from bioplastic in anaerobic digestion. The pretreated bioplastic with MtOH-ZnOAc performs efficient solubilization and produced 205.7 ± 6.9 mL/g CODadded, which is higher than thermal alkaline degradation. The mesophilic condition produces more than 79% higher biogas compared with the thermophilic condition with the diluted pretreated bioplastic by 30 times. The kinetic study was well fit the experimental data and showed the correlation between cumulative biogas, production rate, and lag phase with mono- and two-stage system in batch fermentation. The two-stage system produced 315.6 ± 7.7 mL/g CODadded which was higher 67.2 ± 2.02 than the mono-stage system. Methanosaetaceae predominates among the Archaea, which are primarily responsible for methanogenesis, showing a contribution to a higher biogas production rate.

Article Citation:
Kriswantoro, J. A., Chu, C. Y., Chang, T. R., Pai, H. J., Chang, C. K., & Chiu, Y. P. (2023). Comparison of thermal alkaline pretreatment and zinc acetate-catalyzed methanolysis (MtOH-ZnOAc) for anaerobic digestion of bioplastic waste. Bioresource Technology, 377, 128959. https://doi.org/10.1016/j.biortech.2023.128959
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Jayen Aris Kriswantoro, M.Si. Profile Picture
(Source: https://sith.itb.ac.id/jayen-aris-kriswantoro-m-si-rev/)
Bioresource Technology Journal Cover
(Source: https://www.sciencedirect.com/journal/bioresource-technology/vol/377/suppl/C)
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Profile of Jayen Aris Kriswantoro, M.Si. Profile Picture:
https://sith.itb.ac.id/jayen-aris-kriswantoro-m-si-rev/