DOI: https://doi.org/10.14710/presipitasi.v0i0.%25p

Potential Rubbish Bioplastic Made from Polybutylene adipate-co-terephthalate (PBAT) Blend Becomes Fertilizer Compost

*Siti Rachmawati  -  Universitas Sebelas Maret, Indonesia
Hashfi Hawali Abdul Matin  -  Universitas Sebelas Maret, Indonesia
Sapta Suhardono  -  Universitas Sebelas Maret, Indonesia
Agnar Pradipa Daniswara  -  Universitas Sebelas Maret, Indonesia
Ririn Nur Fadhilah  -  Universitas Sebelas Maret, Indonesia
Siti Nurlita  -  Gifu University, Japan

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Abstract
Bioplastics that are biodegradable offer an environmentally friendly alternative. One type of bioplastic being developed is Polybutylene Adipate-Co-Terephthalate (PBAT), an aliphatic-aromatic polyester capable of decomposting through microbial activity. This study aims to analyze the potential of bioplastic waste as a compost mixture ingredient and determine the optimal composition of bioplastic waste mixtures for compost production. The study utilized a Completely Randomized Design (CRD) method. The quality of the compost made from bioplastic waste mixtures was evaluated based on SNI 7763:2024 standards, with parameters including pH, temperature, additional substances, and chemical content such as nitrogen (N), phosphorus (P), potassium (K), and organic carbon (C-organic). The composting process lasted 60 days, using mixtures of bioplastics and cow manure organic waste in proportions of 95:5, 90:10, 85:15, 80:20, 75:25, and 70:30, each weighting 1 kg. Some mixtures were supplemented with 30 mL of activated EM4 to accelerate decomposition, while the control group used only cow manure. The results indicated that the compost produced generally met SNI 7763:2024 standards. The most effective composition was 80% organic waste, 20% bioplastic, and 30 mL of EM4. This composition achieved N+P2O5+K2O levels of 2.88%, C-organic content of 30.46%, moisture content of 24.60%, and a pH of 7.60.
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Keywords: bioplastic; compost; PBAT

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Section: Original Research Article
Language : EN
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