ThesisOpen AccessMetadata saja
2025•
Peningkatan jumlah penduduk dan aktivitas masyarakat di Tanjung Selor menyebabkan peningkatan sampah plastik hingga 94 ton per hari. Sampah plastik yang masuk ke perairan Sungai Kayan mengalami proses degradasi akibat paparan sinar matahari, arus air, perubahan cuaca, dan mikroorganisme, yang kemudian menghasilkan partikel kecil yang dikenal sebagai mikroplastik. Penelitian ini bertujuan untuk mengidentifikasi mikroplastik pada sedimen Sungai Kayan, Kalimantan Utara. Metode yang digunakan adalah deskriptif kuantitatif. Sampel diambil di empat stasiun menggunakan metode purposive sampling dan teknik grab sampling. Lokasi pengambilan sampel meliputi Stasiun 1 (Tanjung Palas), Stasiun 2 (Tugu Cinta Damai), Stasiun 3 (PDAM Sabanar), dan Stasiun 4 (Selimau). Pengambilan dilakukan pada pagi dan sore hari. Parameter yang dianalisis meliputi kelimpahan, bentuk, warna, dan ukuran mikroplastik. Hasil penelitian menunjukkan empat bentuk mikroplastik: fragmen (529 partikel), film (317 partikel), fiber (215 partikel), dan pellet (9 partikel). Warna yang ditemukan mencakup transparan, hitam, coklat, merah, kuning, hijau, biru, dan putih, dengan warna dominan transparan (354 partikel). Ukuran mikroplastik yang paling umum adalah 100–500 µm (291 partikel), sedangkan ukuran 20 µm paling sedikit ditemukan (2 partikel). Lokasi dengan kelimpahan mikroplastik tertinggi adalah Stasiun 3 (PDAM Sabanar) sebesar 3,08 partikel/gram, dan terendah di Stasiun 2 (Tugu Cinta Damai) sebesar 2,03 partikel/gram. Hasil ini menunjukkan adanya pencemaran mikroplastik pada sedimen Sungai Kayan yang berpotensi berdampak terhadap ekosistem perairan.
ThesisOpen AccessMetadata saja
2021•Skripsi, Thesis, Disertasi, dan Tugas Akhir
.The presence of plastic waste is increasing along with the increasing population in the city of Tarakan, which reaches 48 tons per day. Plastic waste that is difficult to decompose causes problems of waste accumulation, so efforts are needed to process plastic waste into a useful product. One of them is by utilizing plastic waste as raw material for making paving blocks. This study sought to find an alternative method of making paving blocks with plastic waste raw materials, which might have better characteristic values than conventional paving blocks. Based on the results of the research, the method of manufacture that had the best characteristic value was Method III, with a melting time of 60 minutes, and using gradual cooling. In this method, variations in the composition of the mixture were also given, namely III.A with a composition of 100% plastic waste, and III.B with a composition of 65% plastic waste and 35% sand. Based on the tests carried out, the composition III.B gave the best characteristic value, with a density value of 1.176 gr/cm3, the absorption value reached 1.183% and the compressive strength value was 17.397 Mpa. Based on the analysis, the plastic paving made by method III.B was 99.36% qualified according to the category C paving quality in SNI 03-0691-1996, which was used for pedestrians.
ThesisOpen AccessMetadata saja
2020•Skripsi, Thesis, Disertasi, dan Tugas Akhir
This study aims to understand people’s perception of Efforts to Reduce Plastic Waste in the City of Tarakan. This research is a descriptive study using a qualitative approach. Data collection used was by interview, questionnaire and documentation. The type of data used in this study are primary data obtained from filling out questionnaires by the people of Tarakan City as many as 100 informants as respondents in the study. Researchers used a Likert scale questionnaire. The results of this study note that the Tarakan City community's perception of efforts to reduce plastic waste by using 3 research indicators, namely Reduction of the use of plastic bags, obtained an average of 78.28 results and is in the good category. Guidance and supervision, obtained an average of 82.26 results and are in the very good category. Community participation, the average results obtained 83.13 and are in the very good category. Thus the public perception of the efforts to reduce plastic waste in Tarakan City as a whole obtained a likert score of 80.69 and is in the good category. Keywords: Perception, reduction efforts, plastic waste
