DEGRADIBILITY OF PLASTIC BIODEGRADABLE IN LABORATORIUM SCALE ON AEROB CONDITIONS BASED ON ISO 14855-1:2005

• Main Author: PETRUS ARDINE HELAHA NIM: 15312027, ACHILLES
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/24931
• Institution: Institut Teknologi Bandung

Biodegradable plastic is a plastic that can be degraded by microorganisms into simple compounds such as water (H2O) carbon dioxide (CO2), and biomass. Biodegradable plastics are made from focellulose and starch making it very environmentally friendly compared to conventional plastics that hard to degrade. However, to get a significant assessment about biodegradation level of plastic sample, the result should be measured according to standards. This research used ISO 14855 part 1 which was published on 2005 as basic standard. Sample test that used in this research is plastic biodegradable and filter paper as positive control. Biodegradation test was conducted at composting condition using mature compost from TPS Sabuga ITB as inoculum. The result of carbon dioxide emissions were captured by a saturated NaOH solution and evaluated by standard titration method to check the results. In this study, a review of the physical, chemical, and biological characteristics of the compost was used. The degradation results for biodegradable plastic at controlled composting conditions for 60 days reached 22.47 ± 0.017% and filter paper reached 14.37 ± 0.013%. The use of ISO (International Organization for Standardization) 14855 Standard Part 1 is also to study and evaluate the evolutionary kinetics of C-CO2 during the biodegradation process of the test material using first-order reaction. The results showed that biodegradable plastics and filter paper did not produce carbon readily hydrolyzed (Cr) but showing resulted of degradation rates for carbon moderately hydrolyzed (Cm) and carbon slowly hidrolyzed (Cs) from the emision of C-CO2 produced in this study. The resulted of carbon moderately is 12.97% with k=0.023 day-1 for biodegradable plastics and 6.69% with k=0,005 day-1 value for filter paper, and carbon slowly hydrolyzed is 8.07% with k=0.0038 day-1 for biodegradable plastics and 6.55% with k=0.001 day -1 for filter paper. No lag phase was observed in testing biodegradibility of biodegradable plastic and filter paper as a positive control.